/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:39:27,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:39:27,920 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 22:39:27,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:39:27,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:39:27,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:39:27,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:39:27,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:39:27,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:39:27,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:39:27,954 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:39:27,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:39:27,954 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:39:27,955 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:39:27,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:39:27,955 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:39:27,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:39:27,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:39:27,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:39:27,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:39:27,956 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:39:27,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:39:27,957 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:39:27,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:39:27,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:39:27,957 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:39:27,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:39:27,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:39:27,958 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:39:27,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:39:27,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:39:27,959 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:39:27,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:39:27,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:39:27,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:39:27,959 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:39:28,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:39:28,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:39:28,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:39:28,235 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:39:28,235 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:39:28,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-26 22:39:29,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:39:29,490 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:39:29,491 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-26 22:39:29,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ecd61e0/20d3e7df85034c0b8db95b6c2355d019/FLAG00742e93f [2023-08-26 22:39:29,512 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ecd61e0/20d3e7df85034c0b8db95b6c2355d019 [2023-08-26 22:39:29,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:39:29,515 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:39:29,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:39:29,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:39:29,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:39:29,521 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:29,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b2dd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29, skipping insertion in model container [2023-08-26 22:39:29,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:29,566 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:39:29,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:39:29,920 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:39:29,930 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:39:29,932 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:39:29,937 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 22:39:29,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:39:29,978 WARN L669 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 22:39:29,983 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:39:29,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29 WrapperNode [2023-08-26 22:39:29,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:39:29,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:39:29,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:39:29,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:39:29,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:30,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:30,022 INFO L138 Inliner]: procedures = 273, calls = 44, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 165 [2023-08-26 22:39:30,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:39:30,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:39:30,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:39:30,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:39:30,029 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:30,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:30,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:30,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:30,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:30,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:30,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:30,055 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:30,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:39:30,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:39:30,057 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:39:30,057 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:39:30,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (1/1) ... [2023-08-26 22:39:30,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:39:30,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:39:30,102 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) [2023-08-26 22:39:30,104 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 [2023-08-26 22:39:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:39:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:39:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:39:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:39:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:39:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:39:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:39:30,127 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:39:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:39:30,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:39:30,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:39:30,129 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:39:30,232 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:39:30,234 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:39:30,398 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:39:30,403 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:39:30,404 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-26 22:39:30,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:39:30 BoogieIcfgContainer [2023-08-26 22:39:30,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:39:30,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:39:30,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:39:30,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:39:30,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:39:29" (1/3) ... [2023-08-26 22:39:30,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142fd367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:39:30, skipping insertion in model container [2023-08-26 22:39:30,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:29" (2/3) ... [2023-08-26 22:39:30,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142fd367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:39:30, skipping insertion in model container [2023-08-26 22:39:30,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:39:30" (3/3) ... [2023-08-26 22:39:30,410 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-08-26 22:39:30,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:39:30,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-26 22:39:30,421 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:39:30,465 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:39:30,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 175 transitions, 358 flow [2023-08-26 22:39:30,545 INFO L124 PetriNetUnfolderBase]: 26/218 cut-off events. [2023-08-26 22:39:30,545 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:39:30,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 218 events. 26/218 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 645 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-08-26 22:39:30,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 175 transitions, 358 flow [2023-08-26 22:39:30,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 172 transitions, 352 flow [2023-08-26 22:39:30,558 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:39:30,564 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 172 transitions, 352 flow [2023-08-26 22:39:30,566 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 172 transitions, 352 flow [2023-08-26 22:39:30,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 172 transitions, 352 flow [2023-08-26 22:39:30,591 INFO L124 PetriNetUnfolderBase]: 25/215 cut-off events. [2023-08-26 22:39:30,591 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:39:30,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 215 events. 25/215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 644 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-08-26 22:39:30,595 INFO L119 LiptonReduction]: Number of co-enabled transitions 8268 [2023-08-26 22:39:33,514 INFO L134 LiptonReduction]: Checked pairs total: 15465 [2023-08-26 22:39:33,515 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-08-26 22:39:33,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:39:33,528 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;@68e1d175, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:39:33,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 22:39:33,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:39:33,530 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-26 22:39:33,530 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:39:33,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:39:33,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:39:33,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:39:33,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:39:33,534 INFO L85 PathProgramCache]: Analyzing trace with hash 21319945, now seen corresponding path program 1 times [2023-08-26 22:39:33,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:39:33,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77670678] [2023-08-26 22:39:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:39:33,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:39:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:39:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:39:33,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:39:33,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77670678] [2023-08-26 22:39:33,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77670678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:39:33,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:39:33,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:39:33,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923487235] [2023-08-26 22:39:33,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:39:33,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:39:33,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:39:33,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:39:33,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:39:33,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 326 [2023-08-26 22:39:33,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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) [2023-08-26 22:39:33,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:39:33,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 326 [2023-08-26 22:39:33,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:39:33,918 INFO L124 PetriNetUnfolderBase]: 276/609 cut-off events. [2023-08-26 22:39:33,918 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:39:33,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 609 events. 276/609 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3195 event pairs, 230 based on Foata normal form. 49/472 useless extension candidates. Maximal degree in co-relation 1176. Up to 554 conditions per place. [2023-08-26 22:39:33,922 INFO L140 encePairwiseOnDemand]: 305/326 looper letters, 65 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-26 22:39:33,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 290 flow [2023-08-26 22:39:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:39:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:39:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-26 22:39:33,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5480572597137015 [2023-08-26 22:39:33,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-26 22:39:33,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-26 22:39:33,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:39:33,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-26 22:39:33,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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) [2023-08-26 22:39:33,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 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) [2023-08-26 22:39:33,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 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) [2023-08-26 22:39:33,944 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 140 flow. Second operand 3 states and 536 transitions. [2023-08-26 22:39:33,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 290 flow [2023-08-26 22:39:33,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 74 transitions, 290 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:39:33,948 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 112 flow [2023-08-26 22:39:33,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-26 22:39:33,951 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-08-26 22:39:33,952 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 112 flow [2023-08-26 22:39:33,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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) [2023-08-26 22:39:33,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:39:33,952 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:39:33,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:39:33,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:39:33,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:39:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash -986312993, now seen corresponding path program 1 times [2023-08-26 22:39:33,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:39:33,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214273915] [2023-08-26 22:39:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:39:33,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:39:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:39:33,970 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:39:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:39:33,992 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:39:33,992 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:39:33,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-26 22:39:33,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-26 22:39:33,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-26 22:39:33,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-26 22:39:33,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (17 of 22 remaining) [2023-08-26 22:39:33,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-26 22:39:33,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-26 22:39:33,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-26 22:39:33,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-26 22:39:33,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-26 22:39:33,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-26 22:39:33,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-26 22:39:33,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-26 22:39:33,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2023-08-26 22:39:33,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-26 22:39:33,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-26 22:39:33,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-26 22:39:33,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-26 22:39:33,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-26 22:39:33,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-26 22:39:33,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-26 22:39:33,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-26 22:39:33,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:39:33,998 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 22:39:34,001 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:39:34,001 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:39:34,021 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:39:34,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 255 transitions, 528 flow [2023-08-26 22:39:34,062 INFO L124 PetriNetUnfolderBase]: 48/378 cut-off events. [2023-08-26 22:39:34,062 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:39:34,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 378 events. 48/378 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1403 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 228. Up to 8 conditions per place. [2023-08-26 22:39:34,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 255 transitions, 528 flow [2023-08-26 22:39:34,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 255 transitions, 528 flow [2023-08-26 22:39:34,069 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:39:34,069 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 255 transitions, 528 flow [2023-08-26 22:39:34,069 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 255 transitions, 528 flow [2023-08-26 22:39:34,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 255 transitions, 528 flow [2023-08-26 22:39:34,103 INFO L124 PetriNetUnfolderBase]: 48/378 cut-off events. [2023-08-26 22:39:34,103 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:39:34,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 378 events. 48/378 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1403 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 228. Up to 8 conditions per place. [2023-08-26 22:39:34,119 INFO L119 LiptonReduction]: Number of co-enabled transitions 31668 [2023-08-26 22:39:37,025 INFO L134 LiptonReduction]: Checked pairs total: 98072 [2023-08-26 22:39:37,025 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-08-26 22:39:37,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:39:37,027 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;@68e1d175, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:39:37,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-26 22:39:37,029 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:39:37,029 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-26 22:39:37,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:39:37,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:39:37,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:39:37,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:39:37,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:39:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1170637843, now seen corresponding path program 1 times [2023-08-26 22:39:37,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:39:37,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666890478] [2023-08-26 22:39:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:39:37,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:39:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:39:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:39:37,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:39:37,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666890478] [2023-08-26 22:39:37,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666890478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:39:37,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:39:37,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:39:37,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318520536] [2023-08-26 22:39:37,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:39:37,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:39:37,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:39:37,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:39:37,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:39:37,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 454 [2023-08-26 22:39:37,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 120 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2023-08-26 22:39:37,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:39:37,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 454 [2023-08-26 22:39:37,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:39:39,057 INFO L124 PetriNetUnfolderBase]: 25058/39659 cut-off events. [2023-08-26 22:39:39,058 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2023-08-26 22:39:39,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78189 conditions, 39659 events. 25058/39659 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 309553 event pairs, 11536 based on Foata normal form. 3546/30075 useless extension candidates. Maximal degree in co-relation 4362. Up to 38288 conditions per place. [2023-08-26 22:39:39,207 INFO L140 encePairwiseOnDemand]: 422/454 looper letters, 109 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-08-26 22:39:39,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 124 transitions, 488 flow [2023-08-26 22:39:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:39:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:39:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2023-08-26 22:39:39,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.579295154185022 [2023-08-26 22:39:39,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2023-08-26 22:39:39,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2023-08-26 22:39:39,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:39:39,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2023-08-26 22:39:39,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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) [2023-08-26 22:39:39,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 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) [2023-08-26 22:39:39,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 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) [2023-08-26 22:39:39,214 INFO L175 Difference]: Start difference. First operand has 94 places, 120 transitions, 258 flow. Second operand 3 states and 789 transitions. [2023-08-26 22:39:39,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 124 transitions, 488 flow [2023-08-26 22:39:39,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 124 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:39:39,217 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 220 flow [2023-08-26 22:39:39,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2023-08-26 22:39:39,218 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2023-08-26 22:39:39,218 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 220 flow [2023-08-26 22:39:39,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2023-08-26 22:39:39,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:39:39,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:39:39,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:39:39,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:39:39,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:39:39,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2065030865, now seen corresponding path program 1 times [2023-08-26 22:39:39,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:39:39,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243254512] [2023-08-26 22:39:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:39:39,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:39:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:39:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:39:39,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:39:39,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243254512] [2023-08-26 22:39:39,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243254512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:39:39,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:39:39,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:39:39,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225228213] [2023-08-26 22:39:39,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:39:39,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:39:39,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:39:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:39:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:39:39,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 454 [2023-08-26 22:39:39,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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) [2023-08-26 22:39:39,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:39:39,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 454 [2023-08-26 22:39:39,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:39:41,252 INFO L124 PetriNetUnfolderBase]: 25728/41311 cut-off events. [2023-08-26 22:39:41,252 INFO L125 PetriNetUnfolderBase]: For 2099/2099 co-relation queries the response was YES. [2023-08-26 22:39:41,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85704 conditions, 41311 events. 25728/41311 cut-off events. For 2099/2099 co-relation queries the response was YES. Maximal size of possible extension queue 1423. Compared 331376 event pairs, 10094 based on Foata normal form. 0/29021 useless extension candidates. Maximal degree in co-relation 85522. Up to 27603 conditions per place. [2023-08-26 22:39:41,390 INFO L140 encePairwiseOnDemand]: 429/454 looper letters, 137 selfloop transitions, 17 changer transitions 0/166 dead transitions. [2023-08-26 22:39:41,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 166 transitions, 694 flow [2023-08-26 22:39:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:39:41,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:39:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2023-08-26 22:39:41,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5624082232011748 [2023-08-26 22:39:41,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2023-08-26 22:39:41,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2023-08-26 22:39:41,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:39:41,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2023-08-26 22:39:41,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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) [2023-08-26 22:39:41,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 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) [2023-08-26 22:39:41,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 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) [2023-08-26 22:39:41,397 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 220 flow. Second operand 3 states and 766 transitions. [2023-08-26 22:39:41,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 166 transitions, 694 flow [2023-08-26 22:39:41,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 166 transitions, 691 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:39:41,400 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 366 flow [2023-08-26 22:39:41,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2023-08-26 22:39:41,400 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 6 predicate places. [2023-08-26 22:39:41,401 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 366 flow [2023-08-26 22:39:41,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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) [2023-08-26 22:39:41,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:39:41,401 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:39:41,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:39:41,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:39:41,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:39:41,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1017529545, now seen corresponding path program 1 times [2023-08-26 22:39:41,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:39:41,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582462839] [2023-08-26 22:39:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:39:41,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:39:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:39:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:39:41,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:39:41,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582462839] [2023-08-26 22:39:41,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582462839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:39:41,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:39:41,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:39:41,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354927067] [2023-08-26 22:39:41,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:39:41,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:39:41,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:39:41,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:39:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:39:41,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 454 [2023-08-26 22:39:41,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 110 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 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) [2023-08-26 22:39:41,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:39:41,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 454 [2023-08-26 22:39:41,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:39:43,371 INFO L124 PetriNetUnfolderBase]: 23261/38886 cut-off events. [2023-08-26 22:39:43,371 INFO L125 PetriNetUnfolderBase]: For 16093/16102 co-relation queries the response was YES. [2023-08-26 22:39:43,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91296 conditions, 38886 events. 23261/38886 cut-off events. For 16093/16102 co-relation queries the response was YES. Maximal size of possible extension queue 1371. Compared 336492 event pairs, 5382 based on Foata normal form. 1/34180 useless extension candidates. Maximal degree in co-relation 40547. Up to 27041 conditions per place. [2023-08-26 22:39:43,506 INFO L140 encePairwiseOnDemand]: 451/454 looper letters, 168 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2023-08-26 22:39:43,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 183 transitions, 962 flow [2023-08-26 22:39:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:39:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:39:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 774 transitions. [2023-08-26 22:39:43,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5682819383259912 [2023-08-26 22:39:43,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 774 transitions. [2023-08-26 22:39:43,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 774 transitions. [2023-08-26 22:39:43,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:39:43,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 774 transitions. [2023-08-26 22:39:43,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 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) [2023-08-26 22:39:43,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 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) [2023-08-26 22:39:43,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 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) [2023-08-26 22:39:43,512 INFO L175 Difference]: Start difference. First operand has 100 places, 110 transitions, 366 flow. Second operand 3 states and 774 transitions. [2023-08-26 22:39:43,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 183 transitions, 962 flow [2023-08-26 22:39:43,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 183 transitions, 896 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:39:43,550 INFO L231 Difference]: Finished difference. Result has 99 places, 109 transitions, 332 flow [2023-08-26 22:39:43,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=99, PETRI_TRANSITIONS=109} [2023-08-26 22:39:43,551 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2023-08-26 22:39:43,551 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 109 transitions, 332 flow [2023-08-26 22:39:43,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 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) [2023-08-26 22:39:43,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:39:43,552 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:39:43,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:39:43,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:39:43,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:39:43,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1017529566, now seen corresponding path program 1 times [2023-08-26 22:39:43,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:39:43,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049030198] [2023-08-26 22:39:43,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:39:43,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:39:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:39:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:39:43,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:39:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049030198] [2023-08-26 22:39:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049030198] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:39:43,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:39:43,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:39:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490265968] [2023-08-26 22:39:43,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:39:43,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:39:43,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:39:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:39:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:39:43,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 454 [2023-08-26 22:39:43,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 109 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 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) [2023-08-26 22:39:43,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:39:43,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 454 [2023-08-26 22:39:43,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:39:45,281 INFO L124 PetriNetUnfolderBase]: 21583/36167 cut-off events. [2023-08-26 22:39:45,281 INFO L125 PetriNetUnfolderBase]: For 6900/6900 co-relation queries the response was YES. [2023-08-26 22:39:45,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81919 conditions, 36167 events. 21583/36167 cut-off events. For 6900/6900 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 308355 event pairs, 2252 based on Foata normal form. 0/30143 useless extension candidates. Maximal degree in co-relation 36264. Up to 29678 conditions per place. [2023-08-26 22:39:45,421 INFO L140 encePairwiseOnDemand]: 450/454 looper letters, 166 selfloop transitions, 4 changer transitions 0/183 dead transitions. [2023-08-26 22:39:45,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 183 transitions, 898 flow [2023-08-26 22:39:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:39:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:39:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 774 transitions. [2023-08-26 22:39:45,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5682819383259912 [2023-08-26 22:39:45,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 774 transitions. [2023-08-26 22:39:45,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 774 transitions. [2023-08-26 22:39:45,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:39:45,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 774 transitions. [2023-08-26 22:39:45,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 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) [2023-08-26 22:39:45,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 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) [2023-08-26 22:39:45,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 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) [2023-08-26 22:39:45,428 INFO L175 Difference]: Start difference. First operand has 99 places, 109 transitions, 332 flow. Second operand 3 states and 774 transitions. [2023-08-26 22:39:45,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 183 transitions, 898 flow [2023-08-26 22:39:45,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 183 transitions, 894 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:39:45,556 INFO L231 Difference]: Finished difference. Result has 99 places, 109 transitions, 340 flow [2023-08-26 22:39:45,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=99, PETRI_TRANSITIONS=109} [2023-08-26 22:39:45,557 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2023-08-26 22:39:45,557 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 109 transitions, 340 flow [2023-08-26 22:39:45,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 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) [2023-08-26 22:39:45,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:39:45,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:39:45,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:39:45,558 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:39:45,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:39:45,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2065030753, now seen corresponding path program 1 times [2023-08-26 22:39:45,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:39:45,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033949361] [2023-08-26 22:39:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:39:45,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:39:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:39:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:39:45,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:39:45,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033949361] [2023-08-26 22:39:45,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033949361] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:39:45,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:39:45,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:39:45,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692433957] [2023-08-26 22:39:45,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:39:45,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:39:45,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:39:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:39:45,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:39:45,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 454 [2023-08-26 22:39:45,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 109 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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) [2023-08-26 22:39:45,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:39:45,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 454 [2023-08-26 22:39:45,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:39:47,228 INFO L124 PetriNetUnfolderBase]: 21222/34513 cut-off events. [2023-08-26 22:39:47,229 INFO L125 PetriNetUnfolderBase]: For 10366/10386 co-relation queries the response was YES. [2023-08-26 22:39:47,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80905 conditions, 34513 events. 21222/34513 cut-off events. For 10366/10386 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 271407 event pairs, 6960 based on Foata normal form. 520/29264 useless extension candidates. Maximal degree in co-relation 36120. Up to 24713 conditions per place. [2023-08-26 22:39:47,368 INFO L140 encePairwiseOnDemand]: 429/454 looper letters, 150 selfloop transitions, 21 changer transitions 0/183 dead transitions. [2023-08-26 22:39:47,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 183 transitions, 896 flow [2023-08-26 22:39:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:39:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:39:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 762 transitions. [2023-08-26 22:39:47,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594713656387665 [2023-08-26 22:39:47,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 762 transitions. [2023-08-26 22:39:47,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 762 transitions. [2023-08-26 22:39:47,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:39:47,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 762 transitions. [2023-08-26 22:39:47,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 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) [2023-08-26 22:39:47,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 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) [2023-08-26 22:39:47,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 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) [2023-08-26 22:39:47,376 INFO L175 Difference]: Start difference. First operand has 99 places, 109 transitions, 340 flow. Second operand 3 states and 762 transitions. [2023-08-26 22:39:47,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 183 transitions, 896 flow [2023-08-26 22:39:47,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 183 transitions, 889 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:39:47,382 INFO L231 Difference]: Finished difference. Result has 102 places, 129 transitions, 564 flow [2023-08-26 22:39:47,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=564, PETRI_PLACES=102, PETRI_TRANSITIONS=129} [2023-08-26 22:39:47,382 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2023-08-26 22:39:47,383 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 129 transitions, 564 flow [2023-08-26 22:39:47,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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) [2023-08-26 22:39:47,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:39:47,383 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:39:47,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:39:47,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:39:47,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:39:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1406568528, now seen corresponding path program 1 times [2023-08-26 22:39:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:39:47,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510674621] [2023-08-26 22:39:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:39:47,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:39:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:39:47,393 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:39:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:39:47,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:39:47,401 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:39:47,402 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2023-08-26 22:39:47,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2023-08-26 22:39:47,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2023-08-26 22:39:47,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2023-08-26 22:39:47,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (25 of 30 remaining) [2023-08-26 22:39:47,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2023-08-26 22:39:47,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2023-08-26 22:39:47,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2023-08-26 22:39:47,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2023-08-26 22:39:47,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2023-08-26 22:39:47,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2023-08-26 22:39:47,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2023-08-26 22:39:47,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2023-08-26 22:39:47,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2023-08-26 22:39:47,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2023-08-26 22:39:47,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2023-08-26 22:39:47,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2023-08-26 22:39:47,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2023-08-26 22:39:47,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2023-08-26 22:39:47,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:39:47,404 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-26 22:39:47,405 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:39:47,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:39:47,427 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:39:47,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 335 transitions, 700 flow [2023-08-26 22:39:47,489 INFO L124 PetriNetUnfolderBase]: 75/579 cut-off events. [2023-08-26 22:39:47,489 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:39:47,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 579 events. 75/579 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2393 event pairs, 1 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 386. Up to 16 conditions per place. [2023-08-26 22:39:47,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 335 transitions, 700 flow [2023-08-26 22:39:47,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 335 transitions, 700 flow [2023-08-26 22:39:47,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:39:47,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 335 transitions, 700 flow [2023-08-26 22:39:47,498 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 335 transitions, 700 flow [2023-08-26 22:39:47,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 335 transitions, 700 flow [2023-08-26 22:39:47,556 INFO L124 PetriNetUnfolderBase]: 75/579 cut-off events. [2023-08-26 22:39:47,556 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:39:47,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 579 events. 75/579 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2393 event pairs, 1 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 386. Up to 16 conditions per place. [2023-08-26 22:39:47,580 INFO L119 LiptonReduction]: Number of co-enabled transitions 66456 [2023-08-26 22:39:51,165 INFO L134 LiptonReduction]: Checked pairs total: 224768 [2023-08-26 22:39:51,166 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-08-26 22:39:51,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:39:51,167 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;@68e1d175, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:39:51,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-26 22:39:51,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:39:51,168 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 22:39:51,169 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:39:51,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:39:51,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:39:51,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-26 22:39:51,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:39:51,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1807340617, now seen corresponding path program 1 times [2023-08-26 22:39:51,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:39:51,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293015737] [2023-08-26 22:39:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:39:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:39:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:39:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:39:51,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:39:51,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293015737] [2023-08-26 22:39:51,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293015737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:39:51,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:39:51,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:39:51,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097823459] [2023-08-26 22:39:51,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:39:51,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:39:51,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:39:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:39:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:39:51,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 588 [2023-08-26 22:39:51,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 169 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 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) [2023-08-26 22:39:51,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:39:51,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 588 [2023-08-26 22:39:51,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand