./Ultimate.py --spec /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/properties/unreach-call.prp --file /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex-add.i --full-output --architecture 64bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/mnt/thread-witnesses/replication/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /mnt/thread-witnesses/replication/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /mnt/thread-witnesses/replication/UAutomizer-linux/data -tc /mnt/thread-witnesses/replication/UAutomizer-linux/config/AutomizerReach.xml -i /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex-add.i -s /mnt/thread-witnesses/replication/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /mnt/thread-witnesses/replication/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9067bcd66b4865bfb6aa4fb5c23797c879c2b81c36d918479d6650dc5a4b5edc
--- Real Ultimate output ---
This is Ultimate 0.2.2-dev-2329fc7
[2023-01-31 08:38:46,140 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-01-31 08:38:46,142 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-01-31 08:38:46,186 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-01-31 08:38:46,186 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-01-31 08:38:46,188 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-01-31 08:38:46,190 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-01-31 08:38:46,192 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-01-31 08:38:46,193 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-01-31 08:38:46,196 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-01-31 08:38:46,197 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-01-31 08:38:46,198 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-01-31 08:38:46,199 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-01-31 08:38:46,200 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-01-31 08:38:46,202 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-01-31 08:38:46,203 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-01-31 08:38:46,204 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-01-31 08:38:46,204 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-01-31 08:38:46,205 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-01-31 08:38:46,209 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-01-31 08:38:46,210 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-01-31 08:38:46,211 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-01-31 08:38:46,211 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-01-31 08:38:46,228 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-01-31 08:38:46,234 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-01-31 08:38:46,234 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-01-31 08:38:46,234 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-01-31 08:38:46,235 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-01-31 08:38:46,236 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-01-31 08:38:46,237 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-01-31 08:38:46,238 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-01-31 08:38:46,238 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-01-31 08:38:46,239 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-01-31 08:38:46,240 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-01-31 08:38:46,241 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-01-31 08:38:46,241 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-01-31 08:38:46,241 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-01-31 08:38:46,242 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-01-31 08:38:46,242 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-01-31 08:38:46,242 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-01-31 08:38:46,243 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-01-31 08:38:46,244 INFO  L101        SettingsManager]: Beginning loading settings from /mnt/thread-witnesses/replication/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-01-31 08:38:46,286 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-01-31 08:38:46,287 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-01-31 08:38:46,287 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-01-31 08:38:46,287 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-01-31 08:38:46,288 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-01-31 08:38:46,288 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-01-31 08:38:46,289 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-01-31 08:38:46,289 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-01-31 08:38:46,289 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-01-31 08:38:46,289 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-01-31 08:38:46,290 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-01-31 08:38:46,290 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-01-31 08:38:46,291 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-01-31 08:38:46,291 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-01-31 08:38:46,291 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-01-31 08:38:46,291 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-01-31 08:38:46,291 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-01-31 08:38:46,292 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-01-31 08:38:46,292 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-01-31 08:38:46,292 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-01-31 08:38:46,292 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-01-31 08:38:46,292 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-01-31 08:38:46,293 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-01-31 08:38:46,293 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-01-31 08:38:46,293 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-01-31 08:38:46,293 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-01-31 08:38:46,293 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-01-31 08:38:46,293 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-01-31 08:38:46,294 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-01-31 08:38:46,294 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-01-31 08:38:46,294 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-01-31 08:38:46,294 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-01-31 08:38:46,295 INFO  L138        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/mnt/thread-witnesses/replication/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /mnt/thread-witnesses/replication/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9067bcd66b4865bfb6aa4fb5c23797c879c2b81c36d918479d6650dc5a4b5edc
[2023-01-31 08:38:47,094 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-01-31 08:38:47,138 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-01-31 08:38:47,140 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-01-31 08:38:47,140 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-01-31 08:38:47,141 INFO  L275        PluginConnector]: CDTParser initialized
[2023-01-31 08:38:47,142 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex-add.i
[2023-01-31 08:38:50,443 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-01-31 08:38:50,721 INFO  L351              CDTParser]: Found 1 translation units.
[2023-01-31 08:38:50,721 INFO  L172              CDTParser]: Scanning /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex-add.i
[2023-01-31 08:38:50,725 INFO  L394              CDTParser]: About to delete temporary CDT project at /mnt/thread-witnesses/replication/UAutomizer-linux/data/d381b2654/b206e441c4b74185ac67ce7a1827c333/FLAG9dc9b5d59
[2023-01-31 08:38:50,753 INFO  L402              CDTParser]: Successfully deleted /mnt/thread-witnesses/replication/UAutomizer-linux/data/d381b2654/b206e441c4b74185ac67ce7a1827c333
[2023-01-31 08:38:50,767 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-01-31 08:38:50,768 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-01-31 08:38:50,769 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-01-31 08:38:50,769 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-01-31 08:38:50,771 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-01-31 08:38:50,772 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:38:50" (1/1) ...
[2023-01-31 08:38:50,772 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524ff9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:50, skipping insertion in model container
[2023-01-31 08:38:50,772 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:38:50" (1/1) ...
[2023-01-31 08:38:50,777 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-01-31 08:38:50,800 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-01-31 08:38:51,000 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex-add.i[802,815]
[2023-01-31 08:38:51,030 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2023-01-31 08:38:51,038 INFO  L203         MainTranslator]: Completed pre-run
[2023-01-31 08:38:51,048 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/bh-ex-add.i[802,815]
[2023-01-31 08:38:51,055 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2023-01-31 08:38:51,066 INFO  L208         MainTranslator]: Completed translation
[2023-01-31 08:38:51,067 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51 WrapperNode
[2023-01-31 08:38:51,067 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-01-31 08:38:51,068 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-01-31 08:38:51,068 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-01-31 08:38:51,068 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2023-01-31 08:38:51,073 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (1/1) ...
[2023-01-31 08:38:51,078 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (1/1) ...
[2023-01-31 08:38:51,091 INFO  L138                Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43
[2023-01-31 08:38:51,092 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-01-31 08:38:51,092 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-01-31 08:38:51,092 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-01-31 08:38:51,093 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-01-31 08:38:51,107 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (1/1) ...
[2023-01-31 08:38:51,107 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (1/1) ...
[2023-01-31 08:38:51,109 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (1/1) ...
[2023-01-31 08:38:51,109 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (1/1) ...
[2023-01-31 08:38:51,124 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (1/1) ...
[2023-01-31 08:38:51,130 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (1/1) ...
[2023-01-31 08:38:51,135 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (1/1) ...
[2023-01-31 08:38:51,136 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (1/1) ...
[2023-01-31 08:38:51,138 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-01-31 08:38:51,140 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-01-31 08:38:51,140 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-01-31 08:38:51,141 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-01-31 08:38:51,142 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (1/1) ...
[2023-01-31 08:38:51,146 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-01-31 08:38:51,171 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-01-31 08:38:51,202 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /mnt/thread-witnesses/replication/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-01-31 08:38:51,210 INFO  L327       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-01-31 08:38:51,421 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-01-31 08:38:51,421 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-01-31 08:38:51,421 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-01-31 08:38:51,421 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-01-31 08:38:51,421 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-01-31 08:38:51,422 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-01-31 08:38:51,939 INFO  L235             CfgBuilder]: Building ICFG
[2023-01-31 08:38:51,944 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-01-31 08:38:52,327 INFO  L276             CfgBuilder]: Performing block encoding
[2023-01-31 08:38:52,331 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-01-31 08:38:52,355 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2023-01-31 08:38:52,357 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:38:52 BoogieIcfgContainer
[2023-01-31 08:38:52,358 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-01-31 08:38:52,359 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-01-31 08:38:52,359 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-01-31 08:38:52,362 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-01-31 08:38:52,362 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:38:50" (1/3) ...
[2023-01-31 08:38:52,363 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d5fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:38:52, skipping insertion in model container
[2023-01-31 08:38:52,363 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51" (2/3) ...
[2023-01-31 08:38:52,363 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d5fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:38:52, skipping insertion in model container
[2023-01-31 08:38:52,364 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:38:52" (3/3) ...
[2023-01-31 08:38:52,365 INFO  L112   eAbstractionObserver]: Analyzing ICFG bh-ex-add.i
[2023-01-31 08:38:52,419 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-01-31 08:38:52,419 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-01-31 08:38:52,610 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-01-31 08:38:52,624 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@156d156c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-01-31 08:38:52,625 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-01-31 08:38:52,631 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 25 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-01-31 08:38:52,641 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-01-31 08:38:52,641 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:52,641 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:52,642 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:52,647 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:52,648 INFO  L85        PathProgramCache]: Analyzing trace with hash 1812432991, now seen corresponding path program 1 times
[2023-01-31 08:38:52,655 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:52,655 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82433391]
[2023-01-31 08:38:52,655 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:52,656 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:53,014 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:53,307 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-01-31 08:38:53,307 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:53,307 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82433391]
[2023-01-31 08:38:53,308 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82433391] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:38:53,308 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:38:53,308 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-01-31 08:38:53,310 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088355638]
[2023-01-31 08:38:53,311 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:38:53,322 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-01-31 08:38:53,322 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:53,359 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-01-31 08:38:53,361 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-01-31 08:38:53,363 INFO  L87              Difference]: Start difference. First operand  has 25 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-01-31 08:38:53,486 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:53,486 INFO  L93              Difference]: Finished difference Result 48 states and 75 transitions.
[2023-01-31 08:38:53,488 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-01-31 08:38:53,489 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2023-01-31 08:38:53,489 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:53,494 INFO  L225             Difference]: With dead ends: 48
[2023-01-31 08:38:53,497 INFO  L226             Difference]: Without dead ends: 25
[2023-01-31 08:38:53,501 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:38:53,510 INFO  L413           NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:53,511 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 74 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-01-31 08:38:53,524 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2023-01-31 08:38:53,553 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2023-01-31 08:38:53,560 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-01-31 08:38:53,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions.
[2023-01-31 08:38:53,563 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 7
[2023-01-31 08:38:53,565 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:53,566 INFO  L495      AbstractCegarLoop]: Abstraction has 25 states and 33 transitions.
[2023-01-31 08:38:53,566 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-01-31 08:38:53,566 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions.
[2023-01-31 08:38:53,567 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2023-01-31 08:38:53,568 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:53,568 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:53,568 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-01-31 08:38:53,569 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:53,569 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:53,570 INFO  L85        PathProgramCache]: Analyzing trace with hash -893877601, now seen corresponding path program 1 times
[2023-01-31 08:38:53,570 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:53,570 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419568813]
[2023-01-31 08:38:53,571 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:53,571 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:53,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:53,769 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:38:53,776 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:53,785 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-01-31 08:38:53,786 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:53,787 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419568813]
[2023-01-31 08:38:53,787 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419568813] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:38:53,787 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:38:53,787 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-01-31 08:38:53,788 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692785511]
[2023-01-31 08:38:53,788 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:38:53,789 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-01-31 08:38:53,790 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:53,791 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-01-31 08:38:53,800 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-01-31 08:38:53,800 INFO  L87              Difference]: Start difference. First operand 25 states and 33 transitions. Second operand  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-01-31 08:38:53,881 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:53,881 INFO  L93              Difference]: Finished difference Result 31 states and 38 transitions.
[2023-01-31 08:38:53,882 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-01-31 08:38:53,882 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2023-01-31 08:38:53,882 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:53,884 INFO  L225             Difference]: With dead ends: 31
[2023-01-31 08:38:53,884 INFO  L226             Difference]: Without dead ends: 29
[2023-01-31 08:38:53,888 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:38:53,890 INFO  L413           NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:53,891 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 80 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:38:53,893 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2023-01-31 08:38:53,900 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2023-01-31 08:38:53,901 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-01-31 08:38:53,902 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions.
[2023-01-31 08:38:53,903 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 12
[2023-01-31 08:38:53,903 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:53,903 INFO  L495      AbstractCegarLoop]: Abstraction has 29 states and 36 transitions.
[2023-01-31 08:38:53,904 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-01-31 08:38:53,904 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions.
[2023-01-31 08:38:53,907 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2023-01-31 08:38:53,908 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:53,908 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:53,908 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-01-31 08:38:53,909 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:53,910 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:53,911 INFO  L85        PathProgramCache]: Analyzing trace with hash -207982916, now seen corresponding path program 1 times
[2023-01-31 08:38:53,911 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:53,911 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571202260]
[2023-01-31 08:38:53,914 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:53,914 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:53,943 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,020 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:38:54,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,032 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-01-31 08:38:54,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,058 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-01-31 08:38:54,058 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:54,058 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571202260]
[2023-01-31 08:38:54,059 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571202260] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:38:54,059 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:38:54,059 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-01-31 08:38:54,059 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279733085]
[2023-01-31 08:38:54,059 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:38:54,060 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-01-31 08:38:54,060 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:54,060 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-01-31 08:38:54,061 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-01-31 08:38:54,061 INFO  L87              Difference]: Start difference. First operand 29 states and 36 transitions. Second operand  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-01-31 08:38:54,099 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:54,099 INFO  L93              Difference]: Finished difference Result 67 states and 90 transitions.
[2023-01-31 08:38:54,100 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-01-31 08:38:54,100 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20
[2023-01-31 08:38:54,100 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:54,112 INFO  L225             Difference]: With dead ends: 67
[2023-01-31 08:38:54,112 INFO  L226             Difference]: Without dead ends: 40
[2023-01-31 08:38:54,112 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-01-31 08:38:54,113 INFO  L413           NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:54,114 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:38:54,114 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2023-01-31 08:38:54,129 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2023-01-31 08:38:54,130 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-01-31 08:38:54,131 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 55 transitions.
[2023-01-31 08:38:54,131 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 55 transitions. Word has length 20
[2023-01-31 08:38:54,131 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:54,131 INFO  L495      AbstractCegarLoop]: Abstraction has 40 states and 55 transitions.
[2023-01-31 08:38:54,132 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-01-31 08:38:54,132 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 55 transitions.
[2023-01-31 08:38:54,132 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2023-01-31 08:38:54,132 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:54,143 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:54,143 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-01-31 08:38:54,144 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:54,144 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:54,144 INFO  L85        PathProgramCache]: Analyzing trace with hash -1729259962, now seen corresponding path program 1 times
[2023-01-31 08:38:54,145 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:54,145 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688786078]
[2023-01-31 08:38:54,145 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:54,145 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:54,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,231 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:38:54,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,246 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-01-31 08:38:54,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,263 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-01-31 08:38:54,263 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:54,263 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688786078]
[2023-01-31 08:38:54,263 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688786078] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:38:54,263 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:38:54,267 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-01-31 08:38:54,268 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631028260]
[2023-01-31 08:38:54,268 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:38:54,268 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-01-31 08:38:54,269 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:54,269 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-01-31 08:38:54,269 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-01-31 08:38:54,279 INFO  L87              Difference]: Start difference. First operand 40 states and 55 transitions. Second operand  has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-01-31 08:38:54,314 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:54,314 INFO  L93              Difference]: Finished difference Result 98 states and 144 transitions.
[2023-01-31 08:38:54,318 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-01-31 08:38:54,318 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21
[2023-01-31 08:38:54,318 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:54,319 INFO  L225             Difference]: With dead ends: 98
[2023-01-31 08:38:54,319 INFO  L226             Difference]: Without dead ends: 60
[2023-01-31 08:38:54,320 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-01-31 08:38:54,321 INFO  L413           NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:54,330 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 57 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:38:54,331 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2023-01-31 08:38:54,339 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2023-01-31 08:38:54,360 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-01-31 08:38:54,361 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 89 transitions.
[2023-01-31 08:38:54,361 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 89 transitions. Word has length 21
[2023-01-31 08:38:54,364 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:54,364 INFO  L495      AbstractCegarLoop]: Abstraction has 60 states and 89 transitions.
[2023-01-31 08:38:54,364 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-01-31 08:38:54,365 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 89 transitions.
[2023-01-31 08:38:54,366 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2023-01-31 08:38:54,366 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:54,366 INFO  L195           NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:54,366 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-01-31 08:38:54,366 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:54,367 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:54,368 INFO  L85        PathProgramCache]: Analyzing trace with hash -2060121210, now seen corresponding path program 1 times
[2023-01-31 08:38:54,368 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:54,368 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683459233]
[2023-01-31 08:38:54,368 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:54,368 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:54,377 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,499 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:38:54,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,527 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-01-31 08:38:54,530 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,536 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2023-01-31 08:38:54,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,561 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-01-31 08:38:54,563 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,573 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-01-31 08:38:54,573 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:54,573 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683459233]
[2023-01-31 08:38:54,574 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683459233] provided 0 perfect and 1 imperfect interpolant sequences
[2023-01-31 08:38:54,575 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160629157]
[2023-01-31 08:38:54,575 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:54,575 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-01-31 08:38:54,575 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-01-31 08:38:54,597 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-01-31 08:38:54,679 INFO  L327       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-01-31 08:38:54,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,701 INFO  L263         TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-01-31 08:38:54,705 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2023-01-31 08:38:54,826 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-01-31 08:38:54,826 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2023-01-31 08:38:54,912 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-01-31 08:38:54,920 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [160629157] provided 0 perfect and 2 imperfect interpolant sequences
[2023-01-31 08:38:54,920 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-01-31 08:38:54,920 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2023-01-31 08:38:54,922 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499108122]
[2023-01-31 08:38:54,922 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-01-31 08:38:54,924 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-01-31 08:38:54,930 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:54,931 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-01-31 08:38:54,931 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:38:54,932 INFO  L87              Difference]: Start difference. First operand 60 states and 89 transitions. Second operand  has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2023-01-31 08:38:55,039 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:55,055 INFO  L93              Difference]: Finished difference Result 178 states and 284 transitions.
[2023-01-31 08:38:55,056 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-01-31 08:38:55,056 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 35
[2023-01-31 08:38:55,057 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:55,059 INFO  L225             Difference]: With dead ends: 178
[2023-01-31 08:38:55,061 INFO  L226             Difference]: Without dead ends: 120
[2023-01-31 08:38:55,062 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:38:55,063 INFO  L413           NwaCegarLoop]: 41 mSDtfsCounter, 67 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:55,066 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 101 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-01-31 08:38:55,067 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 120 states.
[2023-01-31 08:38:55,090 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120.
[2023-01-31 08:38:55,091 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 120 states, 89 states have (on average 1.5393258426966292) internal successors, (137), 89 states have internal predecessors, (137), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27)
[2023-01-31 08:38:55,092 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 191 transitions.
[2023-01-31 08:38:55,096 INFO  L78                 Accepts]: Start accepts. Automaton has 120 states and 191 transitions. Word has length 35
[2023-01-31 08:38:55,096 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:55,096 INFO  L495      AbstractCegarLoop]: Abstraction has 120 states and 191 transitions.
[2023-01-31 08:38:55,096 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2023-01-31 08:38:55,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 120 states and 191 transitions.
[2023-01-31 08:38:55,102 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-01-31 08:38:55,102 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:55,102 INFO  L195           NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:55,109 INFO  L540       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-01-31 08:38:55,307 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-01-31 08:38:55,313 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:55,314 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:55,315 INFO  L85        PathProgramCache]: Analyzing trace with hash -1770555082, now seen corresponding path program 1 times
[2023-01-31 08:38:55,315 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:55,315 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094632696]
[2023-01-31 08:38:55,315 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:55,315 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:55,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,425 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:38:55,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,438 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-01-31 08:38:55,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,447 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2023-01-31 08:38:55,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,450 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-01-31 08:38:55,465 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,474 INFO  L134       CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-01-31 08:38:55,474 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:55,475 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094632696]
[2023-01-31 08:38:55,475 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094632696] provided 0 perfect and 1 imperfect interpolant sequences
[2023-01-31 08:38:55,475 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223753495]
[2023-01-31 08:38:55,475 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:55,475 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-01-31 08:38:55,476 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-01-31 08:38:55,482 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-01-31 08:38:55,524 INFO  L327       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-01-31 08:38:55,572 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,573 INFO  L263         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-01-31 08:38:55,574 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2023-01-31 08:38:55,628 INFO  L134       CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-01-31 08:38:55,628 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2023-01-31 08:38:55,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2023-01-31 08:38:55,699 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223753495] provided 0 perfect and 2 imperfect interpolant sequences
[2023-01-31 08:38:55,699 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-01-31 08:38:55,699 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2023-01-31 08:38:55,699 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279651153]
[2023-01-31 08:38:55,713 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-01-31 08:38:55,715 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-01-31 08:38:55,715 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:55,716 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-01-31 08:38:55,716 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:38:55,716 INFO  L87              Difference]: Start difference. First operand 120 states and 191 transitions. Second operand  has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2023-01-31 08:38:55,817 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:55,817 INFO  L93              Difference]: Finished difference Result 379 states and 632 transitions.
[2023-01-31 08:38:55,817 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-01-31 08:38:55,818 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 36
[2023-01-31 08:38:55,818 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:55,822 INFO  L225             Difference]: With dead ends: 379
[2023-01-31 08:38:55,822 INFO  L226             Difference]: Without dead ends: 261
[2023-01-31 08:38:55,826 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:38:55,829 INFO  L413           NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:55,830 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 158 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:38:55,832 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 261 states.
[2023-01-31 08:38:55,887 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261.
[2023-01-31 08:38:55,890 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 261 states, 197 states have (on average 1.5634517766497462) internal successors, (308), 197 states have internal predecessors, (308), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60)
[2023-01-31 08:38:55,909 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 428 transitions.
[2023-01-31 08:38:55,920 INFO  L78                 Accepts]: Start accepts. Automaton has 261 states and 428 transitions. Word has length 36
[2023-01-31 08:38:55,920 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:55,920 INFO  L495      AbstractCegarLoop]: Abstraction has 261 states and 428 transitions.
[2023-01-31 08:38:55,921 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10)
[2023-01-31 08:38:55,921 INFO  L276                IsEmpty]: Start isEmpty. Operand 261 states and 428 transitions.
[2023-01-31 08:38:55,923 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2023-01-31 08:38:55,925 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:55,926 INFO  L195           NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:55,932 INFO  L540       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-01-31 08:38:56,129 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-01-31 08:38:56,130 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:56,130 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:56,131 INFO  L85        PathProgramCache]: Analyzing trace with hash 1103119420, now seen corresponding path program 2 times
[2023-01-31 08:38:56,131 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:56,131 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551615774]
[2023-01-31 08:38:56,131 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:56,131 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:56,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,397 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:38:56,398 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,400 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-01-31 08:38:56,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,417 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2023-01-31 08:38:56,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,419 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-01-31 08:38:56,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,422 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2023-01-31 08:38:56,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,425 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2023-01-31 08:38:56,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,429 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2023-01-31 08:38:56,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,432 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2023-01-31 08:38:56,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,435 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2023-01-31 08:38:56,451 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,453 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2023-01-31 08:38:56,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,462 INFO  L134       CoverageAnalysis]: Checked inductivity of 266 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked.
[2023-01-31 08:38:56,462 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:56,462 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551615774]
[2023-01-31 08:38:56,462 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551615774] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:38:56,463 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:38:56,463 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-01-31 08:38:56,463 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661657236]
[2023-01-31 08:38:56,463 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:38:56,464 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-01-31 08:38:56,464 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:56,464 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-01-31 08:38:56,465 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:38:56,465 INFO  L87              Difference]: Start difference. First operand 261 states and 428 transitions. Second operand  has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-01-31 08:38:56,532 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:56,532 INFO  L93              Difference]: Finished difference Result 267 states and 433 transitions.
[2023-01-31 08:38:56,533 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-01-31 08:38:56,533 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 80
[2023-01-31 08:38:56,535 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:56,536 INFO  L225             Difference]: With dead ends: 267
[2023-01-31 08:38:56,536 INFO  L226             Difference]: Without dead ends: 265
[2023-01-31 08:38:56,537 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:38:56,540 INFO  L413           NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:56,540 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 83 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:38:56,541 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 265 states.
[2023-01-31 08:38:56,578 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265.
[2023-01-31 08:38:56,579 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 265 states, 200 states have (on average 1.555) internal successors, (311), 200 states have internal predecessors, (311), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60)
[2023-01-31 08:38:56,583 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 431 transitions.
[2023-01-31 08:38:56,583 INFO  L78                 Accepts]: Start accepts. Automaton has 265 states and 431 transitions. Word has length 80
[2023-01-31 08:38:56,583 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:56,583 INFO  L495      AbstractCegarLoop]: Abstraction has 265 states and 431 transitions.
[2023-01-31 08:38:56,584 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-01-31 08:38:56,584 INFO  L276                IsEmpty]: Start isEmpty. Operand 265 states and 431 transitions.
[2023-01-31 08:38:56,590 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2023-01-31 08:38:56,591 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:56,591 INFO  L195           NwaCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:56,591 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-01-31 08:38:56,591 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:56,592 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:56,592 INFO  L85        PathProgramCache]: Analyzing trace with hash -814900666, now seen corresponding path program 2 times
[2023-01-31 08:38:56,592 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:56,592 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62806374]
[2023-01-31 08:38:56,592 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:56,592 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:56,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,776 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:38:56,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,779 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-01-31 08:38:56,781 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,783 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2023-01-31 08:38:56,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,785 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-01-31 08:38:56,785 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,800 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2023-01-31 08:38:56,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,802 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2023-01-31 08:38:56,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,804 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2023-01-31 08:38:56,805 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,806 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2023-01-31 08:38:56,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,808 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63
[2023-01-31 08:38:56,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,813 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2023-01-31 08:38:56,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:56,816 INFO  L134       CoverageAnalysis]: Checked inductivity of 270 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked.
[2023-01-31 08:38:56,816 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:56,816 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62806374]
[2023-01-31 08:38:56,817 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62806374] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:38:56,819 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:38:56,819 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-01-31 08:38:56,819 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995227087]
[2023-01-31 08:38:56,819 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:38:56,821 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-01-31 08:38:56,821 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:56,822 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-01-31 08:38:56,822 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:38:56,822 INFO  L87              Difference]: Start difference. First operand 265 states and 431 transitions. Second operand  has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-01-31 08:38:56,895 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:56,895 INFO  L93              Difference]: Finished difference Result 265 states and 431 transitions.
[2023-01-31 08:38:56,895 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-01-31 08:38:56,896 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 81
[2023-01-31 08:38:56,896 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:56,896 INFO  L225             Difference]: With dead ends: 265
[2023-01-31 08:38:56,896 INFO  L226             Difference]: Without dead ends: 0
[2023-01-31 08:38:56,897 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:38:56,898 INFO  L413           NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:56,898 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 89 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:38:56,898 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2023-01-31 08:38:56,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2023-01-31 08:38:56,899 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-01-31 08:38:56,899 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2023-01-31 08:38:56,899 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81
[2023-01-31 08:38:56,899 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:56,899 INFO  L495      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2023-01-31 08:38:56,900 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-01-31 08:38:56,900 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2023-01-31 08:38:56,900 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2023-01-31 08:38:56,902 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-01-31 08:38:56,903 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-01-31 08:38:56,904 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2023-01-31 08:38:57,416 INFO  L895   garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (< 59 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 60) (<= |ULTIMATE.start_main_~n~0#1| 60))
[2023-01-31 08:38:57,416 INFO  L899   garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed.
[2023-01-31 08:38:57,416 INFO  L899   garLoopResultBuilder]: For program point L23(lines 23 29) no Hoare annotation was computed.
[2023-01-31 08:38:57,417 INFO  L895   garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 60) (<= |ULTIMATE.start_main_~n~0#1| 60))
[2023-01-31 08:38:57,417 INFO  L895   garLoopResultBuilder]: At program point L19-1(line 19) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 60) (<= |ULTIMATE.start_main_~n~0#1| 60))
[2023-01-31 08:38:57,417 INFO  L895   garLoopResultBuilder]: At program point main_returnLabel#1(lines 15 45) the Hoare annotation is: false
[2023-01-31 08:38:57,417 INFO  L895   garLoopResultBuilder]: At program point L32(lines 18 43) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 60) (<= |ULTIMATE.start_main_~n~0#1| 60))
[2023-01-31 08:38:57,417 INFO  L899   garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2023-01-31 08:38:57,417 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2023-01-31 08:38:57,417 INFO  L899   garLoopResultBuilder]: For program point L20(lines 18 43) no Hoare annotation was computed.
[2023-01-31 08:38:57,418 INFO  L899   garLoopResultBuilder]: For program point L33(lines 33 41) no Hoare annotation was computed.
[2023-01-31 08:38:57,418 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2023-01-31 08:38:57,418 INFO  L899   garLoopResultBuilder]: For program point L21(lines 18 43) no Hoare annotation was computed.
[2023-01-31 08:38:57,418 INFO  L899   garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed.
[2023-01-31 08:38:57,428 INFO  L895   garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 60) (<= |ULTIMATE.start_main_~n~0#1| 60) (< 59 |ULTIMATE.start_main_~n~0#1|))
[2023-01-31 08:38:57,428 INFO  L899   garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed.
[2023-01-31 08:38:57,428 INFO  L899   garLoopResultBuilder]: For program point L34(lines 34 40) no Hoare annotation was computed.
[2023-01-31 08:38:57,428 INFO  L899   garLoopResultBuilder]: For program point L22(lines 22 30) no Hoare annotation was computed.
[2023-01-31 08:38:57,428 INFO  L899   garLoopResultBuilder]: For program point L18-2(lines 18 43) no Hoare annotation was computed.
[2023-01-31 08:38:57,429 INFO  L899   garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed.
[2023-01-31 08:38:57,429 INFO  L899   garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed.
[2023-01-31 08:38:57,429 INFO  L899   garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed.
[2023-01-31 08:38:57,429 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed.
[2023-01-31 08:38:57,429 INFO  L902   garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true
[2023-01-31 08:38:57,429 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed.
[2023-01-31 08:38:57,434 INFO  L445         BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1]
[2023-01-31 08:38:57,435 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-01-31 08:38:57,459 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:38:57 BoogieIcfgContainer
[2023-01-31 08:38:57,459 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-01-31 08:38:57,460 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-01-31 08:38:57,460 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2023-01-31 08:38:57,460 INFO  L275        PluginConnector]: Witness Printer initialized
[2023-01-31 08:38:57,461 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:38:52" (3/4) ...
[2023-01-31 08:38:57,463 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2023-01-31 08:38:57,467 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2023-01-31 08:38:57,483 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges
[2023-01-31 08:38:57,484 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2023-01-31 08:38:57,484 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2023-01-31 08:38:57,484 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-01-31 08:38:57,534 INFO  L141         WitnessManager]: Wrote witness to /mnt/thread-witnesses/replication/UAutomizer-linux/witness.graphml
[2023-01-31 08:38:57,535 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-01-31 08:38:57,535 INFO  L158              Benchmark]: Toolchain (without parser) took 6767.35ms. Allocated memory is still 43.7MB. Free memory was 15.4MB in the beginning and 8.8MB in the end (delta: 6.6MB). Peak memory consumption was 6.6MB. Max. memory is 15.6GB.
[2023-01-31 08:38:57,535 INFO  L158              Benchmark]: CDTParser took 0.15ms. Allocated memory is still 33.1MB. Free memory was 14.2MB in the beginning and 14.2MB in the end (delta: 24.4kB). Peak memory consumption was 24.4kB. Max. memory is 15.6GB.
[2023-01-31 08:38:57,536 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 298.26ms. Allocated memory is still 43.7MB. Free memory was 15.1MB in the beginning and 16.1MB in the end (delta: -998.4kB). Peak memory consumption was 2.4MB. Max. memory is 15.6GB.
[2023-01-31 08:38:57,536 INFO  L158              Benchmark]: Boogie Procedure Inliner took 24.21ms. Allocated memory is still 43.7MB. Free memory was 16.1MB in the beginning and 14.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.5MB. Max. memory is 15.6GB.
[2023-01-31 08:38:57,537 INFO  L158              Benchmark]: Boogie Preprocessor took 46.45ms. Allocated memory is still 43.7MB. Free memory was 14.6MB in the beginning and 13.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.1MB. Max. memory is 15.6GB.
[2023-01-31 08:38:57,537 INFO  L158              Benchmark]: RCFGBuilder took 1217.90ms. Allocated memory is still 43.7MB. Free memory was 13.5MB in the beginning and 15.6MB in the end (delta: -2.0MB). Peak memory consumption was 1.4MB. Max. memory is 15.6GB.
[2023-01-31 08:38:57,537 INFO  L158              Benchmark]: TraceAbstraction took 5100.16ms. Allocated memory is still 43.7MB. Free memory was 15.0MB in the beginning and 11.7MB in the end (delta: 3.3MB). Peak memory consumption was 7.6MB. Max. memory is 15.6GB.
[2023-01-31 08:38:57,538 INFO  L158              Benchmark]: Witness Printer took 75.00ms. Allocated memory is still 43.7MB. Free memory was 11.5MB in the beginning and 8.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.6MB. Max. memory is 15.6GB.
[2023-01-31 08:38:57,540 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.15ms. Allocated memory is still 33.1MB. Free memory was 14.2MB in the beginning and 14.2MB in the end (delta: 24.4kB). Peak memory consumption was 24.4kB. Max. memory is 15.6GB.
 * CACSL2BoogieTranslator took 298.26ms. Allocated memory is still 43.7MB. Free memory was 15.1MB in the beginning and 16.1MB in the end (delta: -998.4kB). Peak memory consumption was 2.4MB. Max. memory is 15.6GB.
 * Boogie Procedure Inliner took 24.21ms. Allocated memory is still 43.7MB. Free memory was 16.1MB in the beginning and 14.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.5MB. Max. memory is 15.6GB.
 * Boogie Preprocessor took 46.45ms. Allocated memory is still 43.7MB. Free memory was 14.6MB in the beginning and 13.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.1MB. Max. memory is 15.6GB.
 * RCFGBuilder took 1217.90ms. Allocated memory is still 43.7MB. Free memory was 13.5MB in the beginning and 15.6MB in the end (delta: -2.0MB). Peak memory consumption was 1.4MB. Max. memory is 15.6GB.
 * TraceAbstraction took 5100.16ms. Allocated memory is still 43.7MB. Free memory was 15.0MB in the beginning and 11.7MB in the end (delta: 3.3MB). Peak memory consumption was 7.6MB. Max. memory is 15.6GB.
 * Witness Printer took 75.00ms. Allocated memory is still 43.7MB. Free memory was 11.5MB in the beginning and 8.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.6MB. Max. memory is 15.6GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Line: 13]: call to reach_error is unreachable
    For all program executions holds that call to reach_error is unreachable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 8, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 698 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 447 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 186 IncrementalHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 251 mSDtfsCounter, 186 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 246 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265occurred in iteration=7, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 120 PreInvPairs, 205 NumberOfFragments, 43 HoareAnnotationTreeSize, 120 FomulaSimplifications, 384 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 589 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 363 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 422 ConstructedInterpolants, 0 QuantifiedInterpolants, 684 SizeOfPredicates, 0 NumberOfNonLiveVariables, 166 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 746/785 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - InvariantResult [Line: 15]: Loop Invariant
    Derived loop invariant: 0
  - InvariantResult [Line: 18]: Loop Invariant
    Derived loop invariant: m <= 60 && n <= 60
RESULT: Ultimate proved your program to be correct!
[2023-01-31 08:38:57,577 INFO  L540       MonitoredProcess]: [MP /mnt/thread-witnesses/replication/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE
