/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:41:52,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:41:52,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:41:52,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-09-16 11:41:52,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:41:52,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:41:52,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:41:52,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:41:52,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:41:52,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:41:52,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:41:52,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:41:52,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:41:52,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:41:52,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:41:52,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:41:52,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:41:52,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:41:52,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:41:52,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:41:52,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:41:52,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:41:52,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:41:52,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:41:52,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:41:52,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:41:52,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:41:52,142 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:41:52,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:41:52,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:41:52,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:41:52,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:41:52,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:41:52,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:41:52,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:41:52,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:41:52,144 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:41:52,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:41:52,144 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:41:52,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:41:52,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:41:52,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:41:52,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:41:52,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:41:52,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:41:52,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:41:52,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:41:52,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:41:52,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:41:52,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:41:52,146 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:41:52,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:41:52,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:41:52,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:41:52,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:41:52,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:41:52,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:41:52,354 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:41:52,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2022-09-16 11:41:52,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab20fd7dd/3473801a8ccf4b96b5cee02fb0345c81/FLAG71e05bb0c [2022-09-16 11:41:52,809 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:41:52,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2022-09-16 11:41:52,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab20fd7dd/3473801a8ccf4b96b5cee02fb0345c81/FLAG71e05bb0c [2022-09-16 11:41:52,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab20fd7dd/3473801a8ccf4b96b5cee02fb0345c81 [2022-09-16 11:41:52,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:41:52,839 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:41:52,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:41:52,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:41:52,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:41:52,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:41:52" (1/1) ... [2022-09-16 11:41:52,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b88881a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:52, skipping insertion in model container [2022-09-16 11:41:52,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:41:52" (1/1) ... [2022-09-16 11:41:52,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:41:52,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:41:53,180 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2022-09-16 11:41:53,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:41:53,210 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:41:53,248 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2022-09-16 11:41:53,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:41:53,303 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:41:53,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53 WrapperNode [2022-09-16 11:41:53,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:41:53,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:41:53,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:41:53,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:41:53,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53" (1/1) ... [2022-09-16 11:41:53,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53" (1/1) ... [2022-09-16 11:41:53,361 INFO L138 Inliner]: procedures = 170, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-09-16 11:41:53,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:41:53,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:41:53,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:41:53,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:41:53,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53" (1/1) ... [2022-09-16 11:41:53,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53" (1/1) ... [2022-09-16 11:41:53,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53" (1/1) ... [2022-09-16 11:41:53,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53" (1/1) ... [2022-09-16 11:41:53,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53" (1/1) ... [2022-09-16 11:41:53,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53" (1/1) ... [2022-09-16 11:41:53,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53" (1/1) ... [2022-09-16 11:41:53,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:41:53,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:41:53,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:41:53,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:41:53,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53" (1/1) ... [2022-09-16 11:41:53,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:41:53,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:41:53,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:41:53,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:41:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:41:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:41:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:41:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:41:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:41:53,473 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-16 11:41:53,473 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-16 11:41:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:41:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:41:53,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:41:53,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:41:53,475 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:41:53,613 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:41:53,615 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:41:53,796 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:41:53,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:41:53,803 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-09-16 11:41:53,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:41:53 BoogieIcfgContainer [2022-09-16 11:41:53,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:41:53,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:41:53,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:41:53,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:41:53,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:41:52" (1/3) ... [2022-09-16 11:41:53,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d176dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:41:53, skipping insertion in model container [2022-09-16 11:41:53,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:53" (2/3) ... [2022-09-16 11:41:53,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d176dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:41:53, skipping insertion in model container [2022-09-16 11:41:53,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:41:53" (3/3) ... [2022-09-16 11:41:53,812 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2022-09-16 11:41:53,826 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:41:53,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-09-16 11:41:53,827 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:41:53,908 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-16 11:41:53,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 117 transitions, 242 flow [2022-09-16 11:41:54,019 INFO L130 PetriNetUnfolder]: 9/116 cut-off events. [2022-09-16 11:41:54,020 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:41:54,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 9/116 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 188 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 64. Up to 3 conditions per place. [2022-09-16 11:41:54,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 117 transitions, 242 flow [2022-09-16 11:41:54,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 106 transitions, 215 flow [2022-09-16 11:41:54,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:41:54,054 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=false, 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;@66f192b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:41:54,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-09-16 11:41:54,078 INFO L130 PetriNetUnfolder]: 2/76 cut-off events. [2022-09-16 11:41:54,078 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:41:54,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:54,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:54,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:54,086 INFO L85 PathProgramCache]: Analyzing trace with hash 319162151, now seen corresponding path program 1 times [2022-09-16 11:41:54,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:54,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142513035] [2022-09-16 11:41:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:54,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:54,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:54,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142513035] [2022-09-16 11:41:54,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142513035] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:54,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:54,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:41:54,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410997830] [2022-09-16 11:41:54,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:54,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:41:54,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:54,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:41:54,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:41:54,519 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 117 [2022-09-16 11:41:54,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 215 flow. Second operand has 11 states, 11 states have (on average 66.54545454545455) internal successors, (732), 11 states have internal predecessors, (732), 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) [2022-09-16 11:41:54,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:54,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 117 [2022-09-16 11:41:54,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:54,816 INFO L130 PetriNetUnfolder]: 22/182 cut-off events. [2022-09-16 11:41:54,817 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:41:54,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 182 events. 22/182 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 577 event pairs, 2 based on Foata normal form. 54/228 useless extension candidates. Maximal degree in co-relation 197. Up to 19 conditions per place. [2022-09-16 11:41:54,819 INFO L137 encePairwiseOnDemand]: 95/117 looper letters, 38 selfloop transitions, 11 changer transitions 9/108 dead transitions. [2022-09-16 11:41:54,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 108 transitions, 319 flow [2022-09-16 11:41:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:41:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:41:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 850 transitions. [2022-09-16 11:41:54,839 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6054131054131054 [2022-09-16 11:41:54,840 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 850 transitions. [2022-09-16 11:41:54,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 850 transitions. [2022-09-16 11:41:54,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:54,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 850 transitions. [2022-09-16 11:41:54,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 70.83333333333333) internal successors, (850), 12 states have internal predecessors, (850), 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) [2022-09-16 11:41:54,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 117.0) internal successors, (1521), 13 states have internal predecessors, (1521), 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) [2022-09-16 11:41:54,859 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 117.0) internal successors, (1521), 13 states have internal predecessors, (1521), 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) [2022-09-16 11:41:54,861 INFO L175 Difference]: Start difference. First operand has 101 places, 106 transitions, 215 flow. Second operand 12 states and 850 transitions. [2022-09-16 11:41:54,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 108 transitions, 319 flow [2022-09-16 11:41:54,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:41:54,868 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 194 flow [2022-09-16 11:41:54,869 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=194, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2022-09-16 11:41:54,872 INFO L287 CegarLoopForPetriNet]: 101 programPoint places, 7 predicate places. [2022-09-16 11:41:54,873 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 194 flow [2022-09-16 11:41:54,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 66.54545454545455) internal successors, (732), 11 states have internal predecessors, (732), 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) [2022-09-16 11:41:54,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:54,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:54,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:41:54,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:54,875 INFO L85 PathProgramCache]: Analyzing trace with hash 599109391, now seen corresponding path program 1 times [2022-09-16 11:41:54,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:54,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935515538] [2022-09-16 11:41:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:54,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:54,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:54,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935515538] [2022-09-16 11:41:54,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935515538] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:54,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:54,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:41:54,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312919584] [2022-09-16 11:41:54,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:54,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:41:54,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:54,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:41:54,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:41:54,976 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 117 [2022-09-16 11:41:54,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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) [2022-09-16 11:41:54,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:54,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 117 [2022-09-16 11:41:54,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:55,072 INFO L130 PetriNetUnfolder]: 24/152 cut-off events. [2022-09-16 11:41:55,074 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-09-16 11:41:55,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 152 events. 24/152 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 492 event pairs, 7 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 191. Up to 33 conditions per place. [2022-09-16 11:41:55,078 INFO L137 encePairwiseOnDemand]: 111/117 looper letters, 33 selfloop transitions, 5 changer transitions 1/94 dead transitions. [2022-09-16 11:41:55,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 290 flow [2022-09-16 11:41:55,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:41:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:41:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 537 transitions. [2022-09-16 11:41:55,085 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6556776556776557 [2022-09-16 11:41:55,086 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 537 transitions. [2022-09-16 11:41:55,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 537 transitions. [2022-09-16 11:41:55,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:55,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 537 transitions. [2022-09-16 11:41:55,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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) [2022-09-16 11:41:55,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2022-09-16 11:41:55,090 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2022-09-16 11:41:55,090 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 194 flow. Second operand 7 states and 537 transitions. [2022-09-16 11:41:55,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 290 flow [2022-09-16 11:41:55,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 94 transitions, 268 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-09-16 11:41:55,093 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 178 flow [2022-09-16 11:41:55,094 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=178, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2022-09-16 11:41:55,094 INFO L287 CegarLoopForPetriNet]: 101 programPoint places, -8 predicate places. [2022-09-16 11:41:55,095 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 178 flow [2022-09-16 11:41:55,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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) [2022-09-16 11:41:55,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:55,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:55,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:41:55,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:55,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:55,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1392522264, now seen corresponding path program 1 times [2022-09-16 11:41:55,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:55,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116682676] [2022-09-16 11:41:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:55,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:55,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:55,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116682676] [2022-09-16 11:41:55,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116682676] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:55,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:55,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-09-16 11:41:55,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448925594] [2022-09-16 11:41:55,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:55,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-16 11:41:55,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:55,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-16 11:41:55,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:41:55,322 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 117 [2022-09-16 11:41:55,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 178 flow. Second operand has 14 states, 14 states have (on average 59.57142857142857) internal successors, (834), 14 states have internal predecessors, (834), 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) [2022-09-16 11:41:55,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:55,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 117 [2022-09-16 11:41:55,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:55,665 INFO L130 PetriNetUnfolder]: 24/148 cut-off events. [2022-09-16 11:41:55,666 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:41:55,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 148 events. 24/148 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 469 event pairs, 0 based on Foata normal form. 3/149 useless extension candidates. Maximal degree in co-relation 183. Up to 19 conditions per place. [2022-09-16 11:41:55,667 INFO L137 encePairwiseOnDemand]: 103/117 looper letters, 0 selfloop transitions, 0 changer transitions 100/100 dead transitions. [2022-09-16 11:41:55,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 100 transitions, 322 flow [2022-09-16 11:41:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:41:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:41:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 911 transitions. [2022-09-16 11:41:55,670 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5190883190883191 [2022-09-16 11:41:55,670 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 911 transitions. [2022-09-16 11:41:55,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 911 transitions. [2022-09-16 11:41:55,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:55,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 911 transitions. [2022-09-16 11:41:55,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 60.733333333333334) internal successors, (911), 15 states have internal predecessors, (911), 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) [2022-09-16 11:41:55,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 117.0) internal successors, (1872), 16 states have internal predecessors, (1872), 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) [2022-09-16 11:41:55,675 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 117.0) internal successors, (1872), 16 states have internal predecessors, (1872), 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) [2022-09-16 11:41:55,676 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 178 flow. Second operand 15 states and 911 transitions. [2022-09-16 11:41:55,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 100 transitions, 322 flow [2022-09-16 11:41:55,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 100 transitions, 313 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:41:55,678 INFO L231 Difference]: Finished difference. Result has 100 places, 0 transitions, 0 flow [2022-09-16 11:41:55,678 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=100, PETRI_TRANSITIONS=0} [2022-09-16 11:41:55,679 INFO L287 CegarLoopForPetriNet]: 101 programPoint places, -1 predicate places. [2022-09-16 11:41:55,679 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 0 transitions, 0 flow [2022-09-16 11:41:55,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 59.57142857142857) internal successors, (834), 14 states have internal predecessors, (834), 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) [2022-09-16 11:41:55,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-09-16 11:41:55,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2022-09-16 11:41:55,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2022-09-16 11:41:55,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2022-09-16 11:41:55,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2022-09-16 11:41:55,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2022-09-16 11:41:55,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2022-09-16 11:41:55,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2022-09-16 11:41:55,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2022-09-16 11:41:55,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:41:55,684 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-16 11:41:55,688 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:41:55,688 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:41:55,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:41:55 BasicIcfg [2022-09-16 11:41:55,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:41:55,693 INFO L158 Benchmark]: Toolchain (without parser) took 2853.19ms. Allocated memory was 181.4MB in the beginning and 218.1MB in the end (delta: 36.7MB). Free memory was 126.0MB in the beginning and 122.8MB in the end (delta: 3.2MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2022-09-16 11:41:55,693 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 181.4MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:41:55,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 463.72ms. Allocated memory was 181.4MB in the beginning and 218.1MB in the end (delta: 36.7MB). Free memory was 125.8MB in the beginning and 183.7MB in the end (delta: -57.9MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-09-16 11:41:55,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.25ms. Allocated memory is still 218.1MB. Free memory was 183.7MB in the beginning and 181.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:41:55,694 INFO L158 Benchmark]: Boogie Preprocessor took 35.14ms. Allocated memory is still 218.1MB. Free memory was 181.7MB in the beginning and 180.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:41:55,695 INFO L158 Benchmark]: RCFGBuilder took 406.52ms. Allocated memory is still 218.1MB. Free memory was 180.2MB in the beginning and 165.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-09-16 11:41:55,695 INFO L158 Benchmark]: TraceAbstraction took 1885.54ms. Allocated memory is still 218.1MB. Free memory was 164.9MB in the beginning and 122.8MB in the end (delta: 42.1MB). Peak memory consumption was 42.5MB. Max. memory is 8.0GB. [2022-09-16 11:41:55,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 181.4MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 463.72ms. Allocated memory was 181.4MB in the beginning and 218.1MB in the end (delta: 36.7MB). Free memory was 125.8MB in the beginning and 183.7MB in the end (delta: -57.9MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.25ms. Allocated memory is still 218.1MB. Free memory was 183.7MB in the beginning and 181.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.14ms. Allocated memory is still 218.1MB. Free memory was 181.7MB in the beginning and 180.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 406.52ms. Allocated memory is still 218.1MB. Free memory was 180.2MB in the beginning and 165.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1885.54ms. Allocated memory is still 218.1MB. Free memory was 164.9MB in the beginning and 122.8MB in the end (delta: 42.1MB). Peak memory consumption was 42.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 146 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 242 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 242 mSDsluCounter, 391 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 325 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 469 IncrementalHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 66 mSDtfsCounter, 469 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=215occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 474 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:41:55,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...