./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/as-hybrid.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/as-hybrid.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 6f4877babf2234c4d9f84af37e06b0d1c35e333b586df80a0a3a6ac5b1b8e2d2
--- Real Ultimate output ---
This is Ultimate 0.2.2-dev-2329fc7
[2023-01-31 08:38:46,082 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-01-31 08:38:46,083 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-01-31 08:38:46,124 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-01-31 08:38:46,124 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-01-31 08:38:46,127 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-01-31 08:38:46,128 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-01-31 08:38:46,141 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-01-31 08:38:46,142 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-01-31 08:38:46,146 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-01-31 08:38:46,147 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-01-31 08:38:46,149 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-01-31 08:38:46,149 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-01-31 08:38:46,150 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-01-31 08:38:46,152 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-01-31 08:38:46,153 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-01-31 08:38:46,154 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-01-31 08:38:46,154 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-01-31 08:38:46,155 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-01-31 08:38:46,159 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-01-31 08:38:46,164 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-01-31 08:38:46,165 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-01-31 08:38:46,165 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-01-31 08:38:46,166 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-01-31 08:38:46,187 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-01-31 08:38:46,187 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-01-31 08:38:46,187 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-01-31 08:38:46,189 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-01-31 08:38:46,189 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-01-31 08:38:46,191 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-01-31 08:38:46,191 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-01-31 08:38:46,192 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-01-31 08:38:46,193 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-01-31 08:38:46,194 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-01-31 08:38:46,195 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-01-31 08:38:46,195 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-01-31 08:38:46,196 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-01-31 08:38:46,196 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-01-31 08:38:46,196 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-01-31 08:38:46,197 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-01-31 08:38:46,197 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-01-31 08:38:46,198 INFO  L101        SettingsManager]: Beginning loading settings from /mnt/thread-witnesses/replication/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-01-31 08:38:46,242 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-01-31 08:38:46,242 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-01-31 08:38:46,242 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-01-31 08:38:46,243 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-01-31 08:38:46,243 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-01-31 08:38:46,244 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-01-31 08:38:46,244 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-01-31 08:38:46,244 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-01-31 08:38:46,244 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-01-31 08:38:46,245 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-01-31 08:38:46,245 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-01-31 08:38:46,246 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-01-31 08:38:46,246 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-01-31 08:38:46,246 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-01-31 08:38:46,246 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-01-31 08:38:46,247 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-01-31 08:38:46,247 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-01-31 08:38:46,247 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-01-31 08:38:46,247 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-01-31 08:38:46,247 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-01-31 08:38:46,248 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-01-31 08:38:46,248 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-01-31 08:38:46,248 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-01-31 08:38:46,248 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-01-31 08:38:46,249 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-01-31 08:38:46,249 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-01-31 08:38:46,259 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-01-31 08:38:46,259 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-01-31 08:38:46,260 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-01-31 08:38:46,260 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-01-31 08:38:46,260 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-01-31 08:38:46,260 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-01-31 08:38:46,261 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 -> 6f4877babf2234c4d9f84af37e06b0d1c35e333b586df80a0a3a6ac5b1b8e2d2
[2023-01-31 08:38:47,114 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 08:38:47,141 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$Toolchain]: [Toolchain 1]: Parsing single file: /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/as-hybrid.i
[2023-01-31 08:38:50,450 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-01-31 08:38:50,721 INFO  L351              CDTParser]: Found 1 translation units.
[2023-01-31 08:38:50,721 INFO  L172              CDTParser]: Scanning /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/as-hybrid.i
[2023-01-31 08:38:50,726 INFO  L394              CDTParser]: About to delete temporary CDT project at /mnt/thread-witnesses/replication/UAutomizer-linux/data/bed79d1c6/46691dce3aba4bbea0413285f0b24654/FLAG213de270b
[2023-01-31 08:38:50,741 INFO  L402              CDTParser]: Successfully deleted /mnt/thread-witnesses/replication/UAutomizer-linux/data/bed79d1c6/46691dce3aba4bbea0413285f0b24654
[2023-01-31 08:38:50,743 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-01-31 08:38:50,751 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-01-31 08:38:50,759 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-01-31 08:38:50,759 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-01-31 08:38:50,761 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-01-31 08:38:50,762 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:38:50" (1/1) ...
[2023-01-31 08:38:50,768 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c80732f 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 08:38:50,768 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:38:50" (1/1) ...
[2023-01-31 08:38:50,780 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-01-31 08:38:50,805 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-01-31 08:38:50,972 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/as-hybrid.i[802,815]
[2023-01-31 08:38:50,993 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2023-01-31 08:38:51,002 INFO  L203         MainTranslator]: Completed pre-run
[2023-01-31 08:38:51,018 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/as-hybrid.i[802,815]
[2023-01-31 08:38:51,033 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2023-01-31 08:38:51,043 INFO  L208         MainTranslator]: Completed translation
[2023-01-31 08:38:51,043 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:38:51 WrapperNode
[2023-01-31 08:38:51,043 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-01-31 08:38:51,049 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-01-31 08:38:51,050 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-01-31 08:38:51,050 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2023-01-31 08:38:51,055 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 08:38:51,071 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 08:38:51,084 INFO  L138                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31
[2023-01-31 08:38:51,084 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-01-31 08:38:51,085 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-01-31 08:38:51,085 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-01-31 08:38:51,085 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-01-31 08:38:51,093 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 08:38:51,093 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 08:38:51,095 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 08:38:51,095 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 08:38:51,097 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 08:38:51,107 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 08:38:51,111 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 08:38:51,111 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 08:38:51,116 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-01-31 08:38:51,117 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-01-31 08:38:51,123 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-01-31 08:38:51,124 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-01-31 08:38:51,125 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 08:38:51,132 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-01-31 08:38:51,159 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-01-31 08:38:51,200 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 08:38:51,213 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 08:38:51,431 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-01-31 08:38:51,431 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-01-31 08:38:51,431 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-01-31 08:38:51,431 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-01-31 08:38:51,431 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-01-31 08:38:51,432 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-01-31 08:38:51,940 INFO  L235             CfgBuilder]: Building ICFG
[2023-01-31 08:38:51,942 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-01-31 08:38:52,278 INFO  L276             CfgBuilder]: Performing block encoding
[2023-01-31 08:38:52,285 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-01-31 08:38:52,293 INFO  L300             CfgBuilder]: Removed 2 assume(true) statements.
[2023-01-31 08:38:52,294 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:38:52 BoogieIcfgContainer
[2023-01-31 08:38:52,294 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-01-31 08:38:52,296 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-01-31 08:38:52,296 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-01-31 08:38:52,310 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-01-31 08:38:52,310 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:38:50" (1/3) ...
[2023-01-31 08:38:52,311 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4644dfe1 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 08:38:52,311 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 08:38:52,312 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4644dfe1 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 08:38:52,312 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 08:38:52,313 INFO  L112   eAbstractionObserver]: Analyzing ICFG as-hybrid.i
[2023-01-31 08:38:52,402 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-01-31 08:38:52,403 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 08:38:52,621 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;@6afd90f9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-01-31 08:38:52,622 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-01-31 08:38:52,630 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-01-31 08:38:52,644 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2023-01-31 08:38:52,645 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:52,645 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:52,646 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:52,673 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:52,673 INFO  L85        PathProgramCache]: Analyzing trace with hash 302503139, now seen corresponding path program 1 times
[2023-01-31 08:38:52,679 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:52,680 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235466583]
[2023-01-31 08:38:52,680 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:52,681 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:53,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:53,302 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 08:38:53,303 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:53,303 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235466583]
[2023-01-31 08:38:53,320 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235466583] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:38:53,320 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:38:53,320 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-01-31 08:38:53,321 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846021438]
[2023-01-31 08:38:53,322 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:38:53,327 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-01-31 08:38:53,327 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:53,363 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-01-31 08:38:53,363 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:38:53,365 INFO  L87              Difference]: Start difference. First operand  has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 08:38:53,506 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:53,507 INFO  L93              Difference]: Finished difference Result 35 states and 52 transitions.
[2023-01-31 08:38:53,508 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-01-31 08:38:53,509 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 8
[2023-01-31 08:38:53,517 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:53,522 INFO  L225             Difference]: With dead ends: 35
[2023-01-31 08:38:53,522 INFO  L226             Difference]: Without dead ends: 19
[2023-01-31 08:38:53,524 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:38:53,526 INFO  L413           NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:53,547 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-01-31 08:38:53,558 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2023-01-31 08:38:53,574 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18.
[2023-01-31 08:38:53,576 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-01-31 08:38:53,577 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions.
[2023-01-31 08:38:53,578 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8
[2023-01-31 08:38:53,578 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:53,579 INFO  L495      AbstractCegarLoop]: Abstraction has 18 states and 20 transitions.
[2023-01-31 08:38:53,580 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 08:38:53,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions.
[2023-01-31 08:38:53,581 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2023-01-31 08:38:53,581 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:53,581 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:53,582 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-01-31 08:38:53,582 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:53,583 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:53,583 INFO  L85        PathProgramCache]: Analyzing trace with hash 1964350918, now seen corresponding path program 1 times
[2023-01-31 08:38:53,583 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:53,584 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293418294]
[2023-01-31 08:38:53,584 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:53,584 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:53,623 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:53,774 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2023-01-31 08:38:53,776 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:53,780 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 08:38:53,788 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:53,788 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293418294]
[2023-01-31 08:38:53,788 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293418294] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:38:53,789 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:38:53,789 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-01-31 08:38:53,789 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896573905]
[2023-01-31 08:38:53,789 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:38:53,791 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-01-31 08:38:53,791 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:53,792 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-01-31 08:38:53,792 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:38:53,793 INFO  L87              Difference]: Start difference. First operand 18 states and 20 transitions. Second operand  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 08:38:53,892 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:53,893 INFO  L93              Difference]: Finished difference Result 45 states and 53 transitions.
[2023-01-31 08:38:53,893 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-01-31 08:38:53,894 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 13
[2023-01-31 08:38:53,894 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:53,895 INFO  L225             Difference]: With dead ends: 45
[2023-01-31 08:38:53,896 INFO  L226             Difference]: Without dead ends: 29
[2023-01-31 08:38:53,897 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:38:53,898 INFO  L413           NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:53,915 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 55 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-01-31 08:38:53,916 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2023-01-31 08:38:53,928 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28.
[2023-01-31 08:38:53,930 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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 08:38:53,931 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2023-01-31 08:38:53,932 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13
[2023-01-31 08:38:53,932 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:53,932 INFO  L495      AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2023-01-31 08:38:53,933 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 08:38:53,933 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2023-01-31 08:38:53,936 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2023-01-31 08:38:53,936 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:53,936 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:53,937 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-01-31 08:38:53,937 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:53,938 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:53,939 INFO  L85        PathProgramCache]: Analyzing trace with hash -260677292, now seen corresponding path program 1 times
[2023-01-31 08:38:53,939 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:53,939 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985244252]
[2023-01-31 08:38:53,940 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:53,940 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:53,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,005 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2023-01-31 08:38:54,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-01-31 08:38:54,008 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:54,008 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985244252]
[2023-01-31 08:38:54,009 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985244252] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:38:54,009 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:38:54,009 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-01-31 08:38:54,009 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165255612]
[2023-01-31 08:38:54,009 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:38:54,010 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-01-31 08:38:54,010 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:54,021 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-01-31 08:38:54,022 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-01-31 08:38:54,022 INFO  L87              Difference]: Start difference. First operand 28 states and 32 transitions. Second operand  has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 08:38:54,052 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:54,057 INFO  L93              Difference]: Finished difference Result 62 states and 76 transitions.
[2023-01-31 08:38:54,057 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-01-31 08:38:54,057 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), 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 16
[2023-01-31 08:38:54,058 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:54,058 INFO  L225             Difference]: With dead ends: 62
[2023-01-31 08:38:54,070 INFO  L226             Difference]: Without dead ends: 36
[2023-01-31 08:38:54,070 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 08:38:54,072 INFO  L413           NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:54,073 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:38:54,075 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2023-01-31 08:38:54,082 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30.
[2023-01-31 08:38:54,083 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 08:38:54,085 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2023-01-31 08:38:54,085 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16
[2023-01-31 08:38:54,085 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:54,086 INFO  L495      AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2023-01-31 08:38:54,086 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), 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 08:38:54,086 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2023-01-31 08:38:54,089 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2023-01-31 08:38:54,089 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:54,089 INFO  L195           NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:54,096 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-01-31 08:38:54,096 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:54,097 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:54,097 INFO  L85        PathProgramCache]: Analyzing trace with hash 2082247893, now seen corresponding path program 1 times
[2023-01-31 08:38:54,098 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:54,098 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614976601]
[2023-01-31 08:38:54,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:54,098 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:54,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,185 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2023-01-31 08:38:54,187 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,193 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2023-01-31 08:38:54,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,205 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2023-01-31 08:38:54,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,221 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-01-31 08:38:54,232 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:54,232 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614976601]
[2023-01-31 08:38:54,232 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614976601] provided 0 perfect and 1 imperfect interpolant sequences
[2023-01-31 08:38:54,233 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319193168]
[2023-01-31 08:38:54,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:54,234 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-01-31 08:38:54,234 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-01-31 08:38:54,255 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 08:38:54,308 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 08:38:54,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:54,329 INFO  L263         TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-01-31 08:38:54,342 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2023-01-31 08:38:54,406 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-01-31 08:38:54,406 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2023-01-31 08:38:54,486 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-01-31 08:38:54,486 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319193168] provided 0 perfect and 2 imperfect interpolant sequences
[2023-01-31 08:38:54,487 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-01-31 08:38:54,487 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2023-01-31 08:38:54,487 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977762215]
[2023-01-31 08:38:54,487 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-01-31 08:38:54,490 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-01-31 08:38:54,490 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:54,492 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-01-31 08:38:54,493 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:38:54,493 INFO  L87              Difference]: Start difference. First operand 30 states and 34 transitions. Second operand  has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2023-01-31 08:38:54,578 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:54,578 INFO  L93              Difference]: Finished difference Result 82 states and 108 transitions.
[2023-01-31 08:38:54,578 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-01-31 08:38:54,579 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28
[2023-01-31 08:38:54,579 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:54,581 INFO  L225             Difference]: With dead ends: 82
[2023-01-31 08:38:54,582 INFO  L226             Difference]: Without dead ends: 54
[2023-01-31 08:38:54,583 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 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 08:38:54,586 INFO  L413           NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:54,588 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-01-31 08:38:54,589 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2023-01-31 08:38:54,598 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2023-01-31 08:38:54,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 54 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2023-01-31 08:38:54,615 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions.
[2023-01-31 08:38:54,615 INFO  L78                 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 28
[2023-01-31 08:38:54,615 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:54,615 INFO  L495      AbstractCegarLoop]: Abstraction has 54 states and 70 transitions.
[2023-01-31 08:38:54,616 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2023-01-31 08:38:54,616 INFO  L276                IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions.
[2023-01-31 08:38:54,620 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2023-01-31 08:38:54,620 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:38:54,620 INFO  L195           NwaCegarLoop]: trace histogram [10, 9, 9, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:38:54,643 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 08:38:54,821 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2023-01-31 08:38:54,821 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:38:54,822 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:38:54,822 INFO  L85        PathProgramCache]: Analyzing trace with hash 1170396760, now seen corresponding path program 2 times
[2023-01-31 08:38:54,822 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:38:54,823 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085994357]
[2023-01-31 08:38:54,823 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:38:54,823 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:38:54,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,040 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2023-01-31 08:38:55,042 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,043 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2023-01-31 08:38:55,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,050 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2023-01-31 08:38:55,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,053 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2023-01-31 08:38:55,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,057 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2023-01-31 08:38:55,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,073 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2023-01-31 08:38:55,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,076 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2023-01-31 08:38:55,077 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,078 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2023-01-31 08:38:55,085 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,088 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55
[2023-01-31 08:38:55,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:38:55,096 INFO  L134       CoverageAnalysis]: Checked inductivity of 204 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked.
[2023-01-31 08:38:55,096 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:38:55,097 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085994357]
[2023-01-31 08:38:55,097 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085994357] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:38:55,098 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:38:55,098 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-01-31 08:38:55,098 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783489672]
[2023-01-31 08:38:55,111 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:38:55,112 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-01-31 08:38:55,113 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:38:55,114 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-01-31 08:38:55,114 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:38:55,114 INFO  L87              Difference]: Start difference. First operand 54 states and 70 transitions. Second operand  has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2023-01-31 08:38:55,160 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:38:55,161 INFO  L93              Difference]: Finished difference Result 54 states and 70 transitions.
[2023-01-31 08:38:55,161 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-01-31 08:38:55,161 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 64
[2023-01-31 08:38:55,161 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:38:55,162 INFO  L225             Difference]: With dead ends: 54
[2023-01-31 08:38:55,162 INFO  L226             Difference]: Without dead ends: 0
[2023-01-31 08:38:55,162 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:38:55,163 INFO  L413           NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:38:55,163 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:38:55,164 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2023-01-31 08:38:55,164 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2023-01-31 08:38:55,164 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 08:38:55,164 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2023-01-31 08:38:55,164 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64
[2023-01-31 08:38:55,165 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:38:55,165 INFO  L495      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2023-01-31 08:38:55,165 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2023-01-31 08:38:55,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2023-01-31 08:38:55,165 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2023-01-31 08:38:55,167 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-01-31 08:38:55,168 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-01-31 08:38:55,171 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2023-01-31 08:38:55,399 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2023-01-31 08:38:55,399 INFO  L899   garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed.
[2023-01-31 08:38:55,399 INFO  L895   garLoopResultBuilder]: At program point L19-2(lines 19 23) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~0#1| 10) (<= 1 |ULTIMATE.start_main_~i~0#1|))
[2023-01-31 08:38:55,399 INFO  L899   garLoopResultBuilder]: For program point L19-3(lines 16 26) no Hoare annotation was computed.
[2023-01-31 08:38:55,400 INFO  L899   garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed.
[2023-01-31 08:38:55,400 INFO  L895   garLoopResultBuilder]: At program point main_returnLabel#1(lines 14 28) the Hoare annotation is: false
[2023-01-31 08:38:55,400 INFO  L899   garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2023-01-31 08:38:55,400 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2023-01-31 08:38:55,400 INFO  L895   garLoopResultBuilder]: At program point L24-1(lines 16 26) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~0#1| 9) (or (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 |ULTIMATE.start_main_~i~0#1|)))
[2023-01-31 08:38:55,400 INFO  L895   garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~0#1| 10) (<= 1 |ULTIMATE.start_main_~i~0#1|) (< |ULTIMATE.start_main_~j~0#1| 10))
[2023-01-31 08:38:55,401 INFO  L895   garLoopResultBuilder]: At program point L20-1(line 20) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~0#1| 10) (<= 1 |ULTIMATE.start_main_~i~0#1|) (< |ULTIMATE.start_main_~j~0#1| 10))
[2023-01-31 08:38:55,401 INFO  L899   garLoopResultBuilder]: For program point L16-2(lines 16 26) no Hoare annotation was computed.
[2023-01-31 08:38:55,401 INFO  L899   garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed.
[2023-01-31 08:38:55,415 INFO  L899   garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed.
[2023-01-31 08:38:55,415 INFO  L899   garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed.
[2023-01-31 08:38:55,416 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed.
[2023-01-31 08:38:55,416 INFO  L902   garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true
[2023-01-31 08:38:55,416 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed.
[2023-01-31 08:38:55,420 INFO  L445         BasicCegarLoop]: Path program histogram: [2, 1, 1, 1]
[2023-01-31 08:38:55,422 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-01-31 08:38:55,437 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:38:55 BoogieIcfgContainer
[2023-01-31 08:38:55,437 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-01-31 08:38:55,437 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-01-31 08:38:55,437 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2023-01-31 08:38:55,437 INFO  L275        PluginConnector]: Witness Printer initialized
[2023-01-31 08:38:55,438 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 08:38:55,443 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2023-01-31 08:38:55,463 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2023-01-31 08:38:55,465 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges
[2023-01-31 08:38:55,465 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2023-01-31 08:38:55,465 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2023-01-31 08:38:55,465 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-01-31 08:38:55,543 INFO  L141         WitnessManager]: Wrote witness to /mnt/thread-witnesses/replication/UAutomizer-linux/witness.graphml
[2023-01-31 08:38:55,551 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-01-31 08:38:55,552 INFO  L158              Benchmark]: Toolchain (without parser) took 4800.64ms. Allocated memory is still 43.7MB. Free memory was 15.2MB in the beginning and 21.0MB in the end (delta: -5.8MB). Peak memory consumption was 4.9MB. Max. memory is 15.6GB.
[2023-01-31 08:38:55,552 INFO  L158              Benchmark]: CDTParser took 0.16ms. Allocated memory is still 33.1MB. Free memory was 14.1MB in the beginning and 14.1MB in the end (delta: 28.0kB). Peak memory consumption was 28.0kB. Max. memory is 15.6GB.
[2023-01-31 08:38:55,552 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 285.08ms. Allocated memory is still 43.7MB. Free memory was 15.0MB in the beginning and 16.3MB in the end (delta: -1.2MB). Peak memory consumption was 2.5MB. Max. memory is 15.6GB.
[2023-01-31 08:38:55,552 INFO  L158              Benchmark]: Boogie Procedure Inliner took 34.90ms. Allocated memory is still 43.7MB. Free memory was 16.3MB in the beginning and 14.9MB in the end (delta: 1.3MB). Peak memory consumption was 1.3MB. Max. memory is 15.6GB.
[2023-01-31 08:38:55,553 INFO  L158              Benchmark]: Boogie Preprocessor took 31.54ms. Allocated memory is still 43.7MB. Free memory was 14.8MB in the beginning and 13.8MB in the end (delta: 971.9kB). Peak memory consumption was 971.9kB. Max. memory is 15.6GB.
[2023-01-31 08:38:55,553 INFO  L158              Benchmark]: RCFGBuilder took 1177.42ms. Allocated memory is still 43.7MB. Free memory was 13.8MB in the beginning and 16.4MB in the end (delta: -2.6MB). Peak memory consumption was 1.8MB. Max. memory is 15.6GB.
[2023-01-31 08:38:55,553 INFO  L158              Benchmark]: TraceAbstraction took 3140.94ms. Allocated memory is still 43.7MB. Free memory was 15.9MB in the beginning and 11.4MB in the end (delta: 4.5MB). Peak memory consumption was 5.9MB. Max. memory is 15.6GB.
[2023-01-31 08:38:55,554 INFO  L158              Benchmark]: Witness Printer took 113.96ms. Allocated memory is still 43.7MB. Free memory was 11.4MB in the beginning and 21.0MB in the end (delta: -9.6MB). Peak memory consumption was 1.1MB. Max. memory is 15.6GB.
[2023-01-31 08:38:55,555 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.16ms. Allocated memory is still 33.1MB. Free memory was 14.1MB in the beginning and 14.1MB in the end (delta: 28.0kB). Peak memory consumption was 28.0kB. Max. memory is 15.6GB.
 * CACSL2BoogieTranslator took 285.08ms. Allocated memory is still 43.7MB. Free memory was 15.0MB in the beginning and 16.3MB in the end (delta: -1.2MB). Peak memory consumption was 2.5MB. Max. memory is 15.6GB.
 * Boogie Procedure Inliner took 34.90ms. Allocated memory is still 43.7MB. Free memory was 16.3MB in the beginning and 14.9MB in the end (delta: 1.3MB). Peak memory consumption was 1.3MB. Max. memory is 15.6GB.
 * Boogie Preprocessor took 31.54ms. Allocated memory is still 43.7MB. Free memory was 14.8MB in the beginning and 13.8MB in the end (delta: 971.9kB). Peak memory consumption was 971.9kB. Max. memory is 15.6GB.
 * RCFGBuilder took 1177.42ms. Allocated memory is still 43.7MB. Free memory was 13.8MB in the beginning and 16.4MB in the end (delta: -2.6MB). Peak memory consumption was 1.8MB. Max. memory is 15.6GB.
 * TraceAbstraction took 3140.94ms. Allocated memory is still 43.7MB. Free memory was 15.9MB in the beginning and 11.4MB in the end (delta: 4.5MB). Peak memory consumption was 5.9MB. Max. memory is 15.6GB.
 * Witness Printer took 113.96ms. Allocated memory is still 43.7MB. Free memory was 11.4MB in the beginning and 21.0MB in the end (delta: -9.6MB). Peak memory consumption was 1.1MB. 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, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 193 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 115 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 78 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 33 PreInvPairs, 61 NumberOfFragments, 40 HoareAnnotationTreeSize, 33 FomulaSimplifications, 101 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 354 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 250 SizeOfPredicates, 0 NumberOfNonLiveVariables, 73 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 279/282 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: 19]: Loop Invariant
    Derived loop invariant: i <= 10 && 1 <= i
  - InvariantResult [Line: 14]: Loop Invariant
    Derived loop invariant: 0
  - InvariantResult [Line: 16]: Loop Invariant
    Derived loop invariant: i <= 9 && (i == 0 || 1 <= i)
RESULT: Ultimate proved your program to be correct!
[2023-01-31 08:38:55,587 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
