./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/hh-ex2b.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/hh-ex2b.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 33d07b945bedf27c99ae2e0c2f8250a85a01f89cb7fb82b15572e4678e4d0d97
--- Real Ultimate output ---
This is Ultimate 0.2.2-dev-2329fc7
[2023-01-31 08:39:01,999 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-01-31 08:39:02,016 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-01-31 08:39:02,049 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-01-31 08:39:02,050 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-01-31 08:39:02,053 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-01-31 08:39:02,064 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-01-31 08:39:02,070 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-01-31 08:39:02,071 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-01-31 08:39:02,072 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-01-31 08:39:02,072 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-01-31 08:39:02,073 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-01-31 08:39:02,073 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-01-31 08:39:02,074 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-01-31 08:39:02,075 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-01-31 08:39:02,076 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-01-31 08:39:02,076 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-01-31 08:39:02,077 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-01-31 08:39:02,079 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-01-31 08:39:02,098 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-01-31 08:39:02,103 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-01-31 08:39:02,107 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-01-31 08:39:02,108 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-01-31 08:39:02,109 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-01-31 08:39:02,112 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-01-31 08:39:02,112 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-01-31 08:39:02,113 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-01-31 08:39:02,114 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-01-31 08:39:02,114 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-01-31 08:39:02,115 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-01-31 08:39:02,116 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-01-31 08:39:02,116 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-01-31 08:39:02,117 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-01-31 08:39:02,118 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-01-31 08:39:02,119 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-01-31 08:39:02,119 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-01-31 08:39:02,119 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-01-31 08:39:02,119 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-01-31 08:39:02,120 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-01-31 08:39:02,131 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-01-31 08:39:02,132 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-01-31 08:39:02,133 INFO  L101        SettingsManager]: Beginning loading settings from /mnt/thread-witnesses/replication/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-01-31 08:39:02,173 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-01-31 08:39:02,173 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-01-31 08:39:02,174 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-01-31 08:39:02,174 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-01-31 08:39:02,174 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-01-31 08:39:02,175 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-01-31 08:39:02,175 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-01-31 08:39:02,175 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2023-01-31 08:39:02,175 INFO  L138        SettingsManager]:  * Use SBE=true
[2023-01-31 08:39:02,176 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-01-31 08:39:02,176 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-01-31 08:39:02,177 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-01-31 08:39:02,177 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-01-31 08:39:02,177 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-01-31 08:39:02,177 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-01-31 08:39:02,177 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-01-31 08:39:02,178 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-01-31 08:39:02,178 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-01-31 08:39:02,178 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-01-31 08:39:02,178 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-01-31 08:39:02,178 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-01-31 08:39:02,179 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-01-31 08:39:02,179 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-01-31 08:39:02,179 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-01-31 08:39:02,179 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-01-31 08:39:02,179 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-01-31 08:39:02,179 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-01-31 08:39:02,180 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-01-31 08:39:02,180 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-01-31 08:39:02,180 INFO  L138        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-01-31 08:39:02,180 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-01-31 08:39:02,180 INFO  L138        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-01-31 08:39:02,181 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 -> 33d07b945bedf27c99ae2e0c2f8250a85a01f89cb7fb82b15572e4678e4d0d97
[2023-01-31 08:39:02,524 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-01-31 08:39:02,559 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-01-31 08:39:02,561 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-01-31 08:39:02,562 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-01-31 08:39:02,563 INFO  L275        PluginConnector]: CDTParser initialized
[2023-01-31 08:39:02,563 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/hh-ex2b.i
[2023-01-31 08:39:04,204 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-01-31 08:39:04,459 INFO  L351              CDTParser]: Found 1 translation units.
[2023-01-31 08:39:04,459 INFO  L172              CDTParser]: Scanning /mnt/thread-witnesses/replication/bench/thread-witnesses/st-lit/prec/hh-ex2b.i
[2023-01-31 08:39:04,463 INFO  L394              CDTParser]: About to delete temporary CDT project at /mnt/thread-witnesses/replication/UAutomizer-linux/data/21e6baa81/9eef7cd3c9f34672b6e93192c32d040d/FLAG57d72edb9
[2023-01-31 08:39:04,478 INFO  L402              CDTParser]: Successfully deleted /mnt/thread-witnesses/replication/UAutomizer-linux/data/21e6baa81/9eef7cd3c9f34672b6e93192c32d040d
[2023-01-31 08:39:04,480 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-01-31 08:39:04,493 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-01-31 08:39:04,499 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-01-31 08:39:04,499 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-01-31 08:39:04,502 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-01-31 08:39:04,502 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,510 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e80e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04, skipping insertion in model container
[2023-01-31 08:39:04,511 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,516 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-01-31 08:39:04,526 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-01-31 08:39:04,724 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/hh-ex2b.i[800,813]
[2023-01-31 08:39:04,760 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2023-01-31 08:39:04,769 INFO  L203         MainTranslator]: Completed pre-run
[2023-01-31 08:39:04,792 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/hh-ex2b.i[800,813]
[2023-01-31 08:39:04,795 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2023-01-31 08:39:04,818 INFO  L208         MainTranslator]: Completed translation
[2023-01-31 08:39:04,819 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04 WrapperNode
[2023-01-31 08:39:04,819 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-01-31 08:39:04,820 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-01-31 08:39:04,821 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-01-31 08:39:04,821 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2023-01-31 08:39:04,826 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,836 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,850 INFO  L138                Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26
[2023-01-31 08:39:04,852 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-01-31 08:39:04,853 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-01-31 08:39:04,853 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-01-31 08:39:04,853 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-01-31 08:39:04,878 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,879 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,880 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,881 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,883 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,900 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,904 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,905 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,909 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-01-31 08:39:04,910 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-01-31 08:39:04,911 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-01-31 08:39:04,911 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-01-31 08:39:04,912 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (1/1) ...
[2023-01-31 08:39:04,916 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-01-31 08:39:04,938 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-01-31 08:39:04,957 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 08:39:05,002 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 08:39:05,020 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-01-31 08:39:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-01-31 08:39:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-01-31 08:39:05,036 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-01-31 08:39:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-01-31 08:39:05,036 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-01-31 08:39:05,100 INFO  L235             CfgBuilder]: Building ICFG
[2023-01-31 08:39:05,119 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-01-31 08:39:05,285 INFO  L276             CfgBuilder]: Performing block encoding
[2023-01-31 08:39:05,289 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-01-31 08:39:05,293 INFO  L300             CfgBuilder]: Removed 1 assume(true) statements.
[2023-01-31 08:39:05,295 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:39:05 BoogieIcfgContainer
[2023-01-31 08:39:05,306 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-01-31 08:39:05,308 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-01-31 08:39:05,313 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-01-31 08:39:05,331 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-01-31 08:39:05,332 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:39:04" (1/3) ...
[2023-01-31 08:39:05,333 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7825c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:39:05, skipping insertion in model container
[2023-01-31 08:39:05,333 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:39:04" (2/3) ...
[2023-01-31 08:39:05,335 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7825c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:39:05, skipping insertion in model container
[2023-01-31 08:39:05,335 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:39:05" (3/3) ...
[2023-01-31 08:39:05,336 INFO  L112   eAbstractionObserver]: Analyzing ICFG hh-ex2b.i
[2023-01-31 08:39:05,355 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-01-31 08:39:05,356 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-01-31 08:39:05,428 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-01-31 08:39:05,448 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;@67910d1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-01-31 08:39:05,450 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-01-31 08:39:05,453 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 08:39:05,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2023-01-31 08:39:05,462 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:39:05,463 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:39:05,463 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:39:05,468 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:39:05,469 INFO  L85        PathProgramCache]: Analyzing trace with hash 1811601823, now seen corresponding path program 1 times
[2023-01-31 08:39:05,476 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:39:05,477 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342250569]
[2023-01-31 08:39:05,477 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:05,478 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:39:05,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:05,986 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 08:39:05,986 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:39:05,987 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342250569]
[2023-01-31 08:39:05,988 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342250569] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:39:05,991 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:39:05,992 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-01-31 08:39:05,993 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581122606]
[2023-01-31 08:39:05,994 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:39:05,997 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-01-31 08:39:06,003 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:39:06,050 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-01-31 08:39:06,053 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-01-31 08:39:06,055 INFO  L87              Difference]: Start difference. First operand  has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 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 08:39:06,174 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:39:06,174 INFO  L93              Difference]: Finished difference Result 34 states and 47 transitions.
[2023-01-31 08:39:06,175 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-01-31 08:39:06,180 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 08:39:06,180 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:39:06,191 INFO  L225             Difference]: With dead ends: 34
[2023-01-31 08:39:06,191 INFO  L226             Difference]: Without dead ends: 18
[2023-01-31 08:39:06,193 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:39:06,202 INFO  L413           NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-01-31 08:39:06,205 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-01-31 08:39:06,222 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2023-01-31 08:39:06,253 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2023-01-31 08:39:06,260 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 08:39:06,269 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions.
[2023-01-31 08:39:06,271 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7
[2023-01-31 08:39:06,271 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:39:06,272 INFO  L495      AbstractCegarLoop]: Abstraction has 18 states and 20 transitions.
[2023-01-31 08:39:06,272 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 08:39:06,273 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions.
[2023-01-31 08:39:06,273 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2023-01-31 08:39:06,274 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:39:06,274 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:39:06,275 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-01-31 08:39:06,276 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:39:06,276 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:39:06,276 INFO  L85        PathProgramCache]: Analyzing trace with hash -208863319, now seen corresponding path program 1 times
[2023-01-31 08:39:06,276 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:39:06,277 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528722979]
[2023-01-31 08:39:06,277 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:06,277 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:39:06,305 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:06,372 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:39:06,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:06,404 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 08:39:06,407 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:39:06,407 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528722979]
[2023-01-31 08:39:06,408 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528722979] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:39:06,408 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:39:06,408 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-01-31 08:39:06,408 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048343296]
[2023-01-31 08:39:06,408 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:39:06,410 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-01-31 08:39:06,410 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:39:06,411 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-01-31 08:39:06,419 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-01-31 08:39:06,419 INFO  L87              Difference]: Start difference. First operand 18 states and 20 transitions. Second operand  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 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 08:39:06,448 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:39:06,448 INFO  L93              Difference]: Finished difference Result 38 states and 45 transitions.
[2023-01-31 08:39:06,449 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-01-31 08:39:06,449 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 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 14
[2023-01-31 08:39:06,449 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:39:06,450 INFO  L225             Difference]: With dead ends: 38
[2023-01-31 08:39:06,450 INFO  L226             Difference]: Without dead ends: 22
[2023-01-31 08:39:06,450 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 08:39:06,452 INFO  L413           NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28 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 08:39:06,453 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 28 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:39:06,455 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2023-01-31 08:39:06,475 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2023-01-31 08:39:06,477 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-01-31 08:39:06,478 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions.
[2023-01-31 08:39:06,478 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14
[2023-01-31 08:39:06,479 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:39:06,480 INFO  L495      AbstractCegarLoop]: Abstraction has 22 states and 26 transitions.
[2023-01-31 08:39:06,480 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 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 08:39:06,481 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions.
[2023-01-31 08:39:06,482 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2023-01-31 08:39:06,483 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:39:06,483 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:39:06,484 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-01-31 08:39:06,484 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:39:06,485 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:39:06,485 INFO  L85        PathProgramCache]: Analyzing trace with hash 2112447832, now seen corresponding path program 1 times
[2023-01-31 08:39:06,486 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:39:06,486 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163828695]
[2023-01-31 08:39:06,493 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:06,493 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:39:06,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:06,614 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:39:06,616 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:06,629 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2023-01-31 08:39:06,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:06,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-01-31 08:39:06,654 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:39:06,654 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163828695]
[2023-01-31 08:39:06,654 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163828695] provided 0 perfect and 1 imperfect interpolant sequences
[2023-01-31 08:39:06,668 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721697453]
[2023-01-31 08:39:06,669 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:06,669 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-01-31 08:39:06,669 INFO  L189       MonitoredProcess]: No working directory specified, using /mnt/thread-witnesses/replication/UAutomizer-linux/z3
[2023-01-31 08:39:06,685 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 08:39:06,727 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 08:39:06,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:06,760 INFO  L263         TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-01-31 08:39:06,775 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2023-01-31 08:39:06,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-01-31 08:39:06,872 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2023-01-31 08:39:06,941 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-01-31 08:39:06,942 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [721697453] provided 0 perfect and 2 imperfect interpolant sequences
[2023-01-31 08:39:06,943 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-01-31 08:39:06,943 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2023-01-31 08:39:06,946 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346947265]
[2023-01-31 08:39:06,946 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-01-31 08:39:06,948 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-01-31 08:39:06,948 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:39:06,950 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-01-31 08:39:06,950 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2023-01-31 08:39:06,951 INFO  L87              Difference]: Start difference. First operand 22 states and 26 transitions. Second operand  has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2023-01-31 08:39:07,020 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:39:07,020 INFO  L93              Difference]: Finished difference Result 54 states and 71 transitions.
[2023-01-31 08:39:07,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-01-31 08:39:07,021 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 22
[2023-01-31 08:39:07,021 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:39:07,024 INFO  L225             Difference]: With dead ends: 54
[2023-01-31 08:39:07,024 INFO  L226             Difference]: Without dead ends: 34
[2023-01-31 08:39:07,025 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 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 08:39:07,029 INFO  L413           NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:39:07,030 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 59 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:39:07,031 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2023-01-31 08:39:07,039 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2023-01-31 08:39:07,039 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2023-01-31 08:39:07,041 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions.
[2023-01-31 08:39:07,041 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 22
[2023-01-31 08:39:07,041 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:39:07,041 INFO  L495      AbstractCegarLoop]: Abstraction has 34 states and 44 transitions.
[2023-01-31 08:39:07,042 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2023-01-31 08:39:07,042 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions.
[2023-01-31 08:39:07,044 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2023-01-31 08:39:07,051 INFO  L187           NwaCegarLoop]: Found error trace
[2023-01-31 08:39:07,052 INFO  L195           NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1]
[2023-01-31 08:39:07,059 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 08:39:07,256 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /mnt/thread-witnesses/replication/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2023-01-31 08:39:07,257 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-01-31 08:39:07,258 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2023-01-31 08:39:07,258 INFO  L85        PathProgramCache]: Analyzing trace with hash 1672207461, now seen corresponding path program 2 times
[2023-01-31 08:39:07,258 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-01-31 08:39:07,258 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434003185]
[2023-01-31 08:39:07,259 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-01-31 08:39:07,259 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-01-31 08:39:07,310 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:07,549 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2023-01-31 08:39:07,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:07,564 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2023-01-31 08:39:07,565 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:07,567 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2023-01-31 08:39:07,568 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:07,569 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2023-01-31 08:39:07,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:07,574 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2023-01-31 08:39:07,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-01-31 08:39:07,577 INFO  L134       CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked.
[2023-01-31 08:39:07,585 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-01-31 08:39:07,585 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434003185]
[2023-01-31 08:39:07,586 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434003185] provided 1 perfect and 0 imperfect interpolant sequences
[2023-01-31 08:39:07,586 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-01-31 08:39:07,586 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-01-31 08:39:07,588 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328004549]
[2023-01-31 08:39:07,588 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-01-31 08:39:07,589 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-01-31 08:39:07,589 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-01-31 08:39:07,590 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-01-31 08:39:07,596 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-01-31 08:39:07,597 INFO  L87              Difference]: Start difference. First operand 34 states and 44 transitions. Second operand  has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-01-31 08:39:07,652 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-01-31 08:39:07,652 INFO  L93              Difference]: Finished difference Result 34 states and 44 transitions.
[2023-01-31 08:39:07,652 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-01-31 08:39:07,653 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46
[2023-01-31 08:39:07,654 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-01-31 08:39:07,654 INFO  L225             Difference]: With dead ends: 34
[2023-01-31 08:39:07,654 INFO  L226             Difference]: Without dead ends: 0
[2023-01-31 08:39:07,655 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 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 08:39:07,659 INFO  L413           NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-01-31 08:39:07,660 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-01-31 08:39:07,661 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2023-01-31 08:39:07,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2023-01-31 08:39:07,662 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 08:39:07,662 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2023-01-31 08:39:07,669 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46
[2023-01-31 08:39:07,669 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-01-31 08:39:07,669 INFO  L495      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2023-01-31 08:39:07,669 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-01-31 08:39:07,670 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2023-01-31 08:39:07,670 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2023-01-31 08:39:07,672 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-01-31 08:39:07,672 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-01-31 08:39:07,674 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2023-01-31 08:39:07,707 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2023-01-31 08:39:07,721 INFO  L895   garLoopResultBuilder]: At program point L19(lines 17 28) the Hoare annotation is: (<= |ULTIMATE.start_main_~n~0#1| 60)
[2023-01-31 08:39:07,721 INFO  L899   garLoopResultBuilder]: For program point L17-2(lines 17 28) no Hoare annotation was computed.
[2023-01-31 08:39:07,721 INFO  L899   garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed.
[2023-01-31 08:39:07,721 INFO  L895   garLoopResultBuilder]: At program point main_returnLabel#1(lines 15 30) the Hoare annotation is: false
[2023-01-31 08:39:07,722 INFO  L899   garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2023-01-31 08:39:07,722 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2023-01-31 08:39:07,722 INFO  L895   garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~n~0#1| 60) (< 59 |ULTIMATE.start_main_~n~0#1|))
[2023-01-31 08:39:07,724 INFO  L899   garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed.
[2023-01-31 08:39:07,725 INFO  L899   garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed.
[2023-01-31 08:39:07,725 INFO  L895   garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (<= |ULTIMATE.start_main_~n~0#1| 60)
[2023-01-31 08:39:07,725 INFO  L899   garLoopResultBuilder]: For program point L18-1(lines 17 28) no Hoare annotation was computed.
[2023-01-31 08:39:07,725 INFO  L899   garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed.
[2023-01-31 08:39:07,725 INFO  L899   garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed.
[2023-01-31 08:39:07,725 INFO  L899   garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed.
[2023-01-31 08:39:07,726 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed.
[2023-01-31 08:39:07,726 INFO  L902   garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true
[2023-01-31 08:39:07,730 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed.
[2023-01-31 08:39:07,733 INFO  L445         BasicCegarLoop]: Path program histogram: [2, 1, 1]
[2023-01-31 08:39:07,735 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-01-31 08:39:07,753 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:39:07 BoogieIcfgContainer
[2023-01-31 08:39:07,753 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-01-31 08:39:07,760 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-01-31 08:39:07,760 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2023-01-31 08:39:07,761 INFO  L275        PluginConnector]: Witness Printer initialized
[2023-01-31 08:39:07,761 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:39:05" (3/4) ...
[2023-01-31 08:39:07,763 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2023-01-31 08:39:07,768 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2023-01-31 08:39:07,772 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges
[2023-01-31 08:39:07,772 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2023-01-31 08:39:07,772 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2023-01-31 08:39:07,773 INFO  L961   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-01-31 08:39:07,824 INFO  L141         WitnessManager]: Wrote witness to /mnt/thread-witnesses/replication/UAutomizer-linux/witness.graphml
[2023-01-31 08:39:07,824 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-01-31 08:39:07,825 INFO  L158              Benchmark]: Toolchain (without parser) took 3332.10ms. Allocated memory was 42.3MB in the beginning and 51.1MB in the end (delta: 8.7MB). Free memory was 16.0MB in the beginning and 19.5MB in the end (delta: -3.5MB). Peak memory consumption was 5.3MB. Max. memory is 15.6GB.
[2023-01-31 08:39:07,825 INFO  L158              Benchmark]: CDTParser took 0.15ms. Allocated memory is still 38.2MB. Free memory was 14.4MB in the beginning and 14.4MB in the end (delta: 36.6kB). Peak memory consumption was 36.6kB. Max. memory is 15.6GB.
[2023-01-31 08:39:07,825 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 320.57ms. Allocated memory is still 42.3MB. Free memory was 15.8MB in the beginning and 17.4MB in the end (delta: -1.6MB). Peak memory consumption was 6.5MB. Max. memory is 15.6GB.
[2023-01-31 08:39:07,826 INFO  L158              Benchmark]: Boogie Procedure Inliner took 32.10ms. Allocated memory is still 42.3MB. Free memory was 17.4MB in the beginning and 16.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.3MB. Max. memory is 15.6GB.
[2023-01-31 08:39:07,826 INFO  L158              Benchmark]: Boogie Preprocessor took 56.65ms. Allocated memory is still 42.3MB. Free memory was 16.0MB in the beginning and 14.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.1MB. Max. memory is 15.6GB.
[2023-01-31 08:39:07,826 INFO  L158              Benchmark]: RCFGBuilder took 395.74ms. Allocated memory is still 42.3MB. Free memory was 14.9MB in the beginning and 16.7MB in the end (delta: -1.7MB). Peak memory consumption was 6.3MB. Max. memory is 15.6GB.
[2023-01-31 08:39:07,827 INFO  L158              Benchmark]: TraceAbstraction took 2452.23ms. Allocated memory was 42.3MB in the beginning and 51.1MB in the end (delta: 8.7MB). Free memory was 15.9MB in the beginning and 21.7MB in the end (delta: -5.8MB). Peak memory consumption was 3.0MB. Max. memory is 15.6GB.
[2023-01-31 08:39:07,827 INFO  L158              Benchmark]: Witness Printer took 63.96ms. Allocated memory is still 51.1MB. Free memory was 21.7MB in the beginning and 19.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.3MB. Max. memory is 15.6GB.
[2023-01-31 08:39:07,829 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 38.2MB. Free memory was 14.4MB in the beginning and 14.4MB in the end (delta: 36.6kB). Peak memory consumption was 36.6kB. Max. memory is 15.6GB.
 * CACSL2BoogieTranslator took 320.57ms. Allocated memory is still 42.3MB. Free memory was 15.8MB in the beginning and 17.4MB in the end (delta: -1.6MB). Peak memory consumption was 6.5MB. Max. memory is 15.6GB.
 * Boogie Procedure Inliner took 32.10ms. Allocated memory is still 42.3MB. Free memory was 17.4MB in the beginning and 16.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.3MB. Max. memory is 15.6GB.
 * Boogie Preprocessor took 56.65ms. Allocated memory is still 42.3MB. Free memory was 16.0MB in the beginning and 14.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.1MB. Max. memory is 15.6GB.
 * RCFGBuilder took 395.74ms. Allocated memory is still 42.3MB. Free memory was 14.9MB in the beginning and 16.7MB in the end (delta: -1.7MB). Peak memory consumption was 6.3MB. Max. memory is 15.6GB.
 * TraceAbstraction took 2452.23ms. Allocated memory was 42.3MB in the beginning and 51.1MB in the end (delta: 8.7MB). Free memory was 15.9MB in the beginning and 21.7MB in the end (delta: -5.8MB). Peak memory consumption was 3.0MB. Max. memory is 15.6GB.
 * Witness Printer took 63.96ms. Allocated memory is still 51.1MB. Free memory was 21.7MB in the beginning and 19.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.3MB. 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: 2.3s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 148 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 58 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=3, InterpolantAutomatonStates: 21, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 17 PreInvPairs, 28 NumberOfFragments, 15 HoareAnnotationTreeSize, 17 FomulaSimplifications, 58 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 0 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 116/128 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: 17]: Loop Invariant
    Derived loop invariant: n <= 60
RESULT: Ultimate proved your program to be correct!
[2023-01-31 08:39:07,868 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
