/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 --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -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 [2023-08-27 11:38:24,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:38:24,408 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 [2023-08-27 11:38:24,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:38:24,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:38:24,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:38:24,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:38:24,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:38:24,453 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:38:24,456 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:38:24,456 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:38:24,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:38:24,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:38:24,458 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:38:24,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:38:24,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:38:24,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:38:24,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:38:24,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:38:24,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:38:24,459 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:38:24,460 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:38:24,460 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:38:24,461 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:38:24,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:38:24,461 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:38:24,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:38:24,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:38:24,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:38:24,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:38:24,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:38:24,463 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:38:24,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:38:24,464 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:38:24,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:38:24,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:38:24,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:38:24,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:38:24,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:38:24,798 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:38:24,800 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:38:24,802 INFO L431 ainManager$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 [2023-08-27 11:38:26,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:38:26,355 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:38:26,355 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_27-funptr_racing.i [2023-08-27 11:38:26,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65378f45a/5ab2c654f4b64c95a130f65d969b8a08/FLAG9d8095c51 [2023-08-27 11:38:26,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65378f45a/5ab2c654f4b64c95a130f65d969b8a08 [2023-08-27 11:38:26,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:38:26,397 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:38:26,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:38:26,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:38:26,400 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:38:26,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:38:26" (1/1) ... [2023-08-27 11:38:26,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610b0a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:26, skipping insertion in model container [2023-08-27 11:38:26,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:38:26" (1/1) ... [2023-08-27 11:38:26,447 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:38:26,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:38:26,907 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:38:26,933 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:38:26,935 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:38:26,941 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-27 11:38:26,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:38:27,022 WARN L669 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 11:38:27,028 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:38:27,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27 WrapperNode [2023-08-27 11:38:27,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:38:27,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:38:27,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:38:27,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:38:27,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (1/1) ... [2023-08-27 11:38:27,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (1/1) ... [2023-08-27 11:38:27,074 INFO L138 Inliner]: procedures = 273, calls = 44, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 165 [2023-08-27 11:38:27,074 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:38:27,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:38:27,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:38:27,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:38:27,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (1/1) ... [2023-08-27 11:38:27,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (1/1) ... [2023-08-27 11:38:27,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (1/1) ... [2023-08-27 11:38:27,086 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (1/1) ... [2023-08-27 11:38:27,092 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (1/1) ... [2023-08-27 11:38:27,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (1/1) ... [2023-08-27 11:38:27,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (1/1) ... [2023-08-27 11:38:27,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (1/1) ... [2023-08-27 11:38:27,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:38:27,102 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:38:27,102 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:38:27,102 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:38:27,103 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (1/1) ... [2023-08-27 11:38:27,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:38:27,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:27,130 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) [2023-08-27 11:38:27,132 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 [2023-08-27 11:38:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:38:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:38:27,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:38:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:38:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:38:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:38:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:38:27,157 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:38:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:38:27,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:38:27,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:38:27,159 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 11:38:27,284 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:38:27,285 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:38:27,498 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:38:27,506 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:38:27,506 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-27 11:38:27,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:38:27 BoogieIcfgContainer [2023-08-27 11:38:27,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:38:27,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:38:27,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:38:27,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:38:27,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:38:26" (1/3) ... [2023-08-27 11:38:27,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f52a998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:38:27, skipping insertion in model container [2023-08-27 11:38:27,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:38:27" (2/3) ... [2023-08-27 11:38:27,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f52a998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:38:27, skipping insertion in model container [2023-08-27 11:38:27,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:38:27" (3/3) ... [2023-08-27 11:38:27,515 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-08-27 11:38:27,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:38:27,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-27 11:38:27,530 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:38:27,610 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:38:27,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 175 transitions, 358 flow [2023-08-27 11:38:27,720 INFO L124 PetriNetUnfolderBase]: 26/218 cut-off events. [2023-08-27 11:38:27,720 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:38:27,730 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. [2023-08-27 11:38:27,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 175 transitions, 358 flow [2023-08-27 11:38:27,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 172 transitions, 352 flow [2023-08-27 11:38:27,740 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:38:27,754 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 172 transitions, 352 flow [2023-08-27 11:38:27,761 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 172 transitions, 352 flow [2023-08-27 11:38:27,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 172 transitions, 352 flow [2023-08-27 11:38:27,816 INFO L124 PetriNetUnfolderBase]: 25/215 cut-off events. [2023-08-27 11:38:27,817 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:38:27,821 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. [2023-08-27 11:38:27,826 INFO L119 LiptonReduction]: Number of co-enabled transitions 8268 [2023-08-27 11:38:31,615 INFO L134 LiptonReduction]: Checked pairs total: 15465 [2023-08-27 11:38:31,615 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-08-27 11:38:31,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:38:31,632 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;@6884255c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:38:31,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 11:38:31,635 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:38:31,635 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-27 11:38:31,635 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:38:31,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:31,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:38:31,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 11:38:31,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash 21319945, now seen corresponding path program 1 times [2023-08-27 11:38:31,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:31,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311418855] [2023-08-27 11:38:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:31,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:31,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:31,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311418855] [2023-08-27 11:38:31,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311418855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:31,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:31,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:38:31,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744929834] [2023-08-27 11:38:31,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:31,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:38:31,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:31,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:38:31,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:38:31,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 326 [2023-08-27 11:38:31,976 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) [2023-08-27 11:38:31,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:31,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 326 [2023-08-27 11:38:31,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:32,148 INFO L124 PetriNetUnfolderBase]: 276/609 cut-off events. [2023-08-27 11:38:32,148 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:38:32,149 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. [2023-08-27 11:38:32,156 INFO L140 encePairwiseOnDemand]: 305/326 looper letters, 65 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-27 11:38:32,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 290 flow [2023-08-27 11:38:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:38:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:38:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-27 11:38:32,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5480572597137015 [2023-08-27 11:38:32,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-27 11:38:32,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-27 11:38:32,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:32,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-27 11:38:32,185 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) [2023-08-27 11:38:32,190 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) [2023-08-27 11:38:32,191 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) [2023-08-27 11:38:32,193 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 140 flow. Second operand 3 states and 536 transitions. [2023-08-27 11:38:32,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 290 flow [2023-08-27 11:38:32,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 74 transitions, 290 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:38:32,200 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 112 flow [2023-08-27 11:38:32,202 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} [2023-08-27 11:38:32,206 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-08-27 11:38:32,206 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 112 flow [2023-08-27 11:38:32,206 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) [2023-08-27 11:38:32,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:32,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:32,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:38:32,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 11:38:32,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:32,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1297732523, now seen corresponding path program 1 times [2023-08-27 11:38:32,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:32,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011207471] [2023-08-27 11:38:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:32,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:32,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:32,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011207471] [2023-08-27 11:38:32,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011207471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:32,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:32,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:38:32,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356820324] [2023-08-27 11:38:32,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:32,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:38:32,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:32,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:38:32,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:38:32,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 326 [2023-08-27 11:38:32,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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) [2023-08-27 11:38:32,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:32,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 326 [2023-08-27 11:38:32,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:32,455 INFO L124 PetriNetUnfolderBase]: 265/583 cut-off events. [2023-08-27 11:38:32,455 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-27 11:38:32,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 583 events. 265/583 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3078 event pairs, 110 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 1195. Up to 315 conditions per place. [2023-08-27 11:38:32,458 INFO L140 encePairwiseOnDemand]: 319/326 looper letters, 46 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2023-08-27 11:38:32,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 237 flow [2023-08-27 11:38:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:38:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:38:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-27 11:38:32,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49591002044989774 [2023-08-27 11:38:32,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-27 11:38:32,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-27 11:38:32,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:32,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-27 11:38:32,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2023-08-27 11:38:32,465 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) [2023-08-27 11:38:32,466 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) [2023-08-27 11:38:32,466 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 112 flow. Second operand 3 states and 485 transitions. [2023-08-27 11:38:32,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 237 flow [2023-08-27 11:38:32,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 231 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:38:32,471 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 114 flow [2023-08-27 11:38:32,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-08-27 11:38:32,472 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-08-27 11:38:32,472 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 114 flow [2023-08-27 11:38:32,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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) [2023-08-27 11:38:32,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:32,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:32,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:38:32,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 11:38:32,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:32,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1297732522, now seen corresponding path program 1 times [2023-08-27 11:38:32,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:32,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260262201] [2023-08-27 11:38:32,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:32,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:32,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:32,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260262201] [2023-08-27 11:38:32,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260262201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:32,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:32,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:38:32,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904969802] [2023-08-27 11:38:32,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:32,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:38:32,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:32,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:38:32,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:38:32,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 326 [2023-08-27 11:38:32,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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) [2023-08-27 11:38:32,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:32,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 326 [2023-08-27 11:38:32,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:32,664 INFO L124 PetriNetUnfolderBase]: 232/511 cut-off events. [2023-08-27 11:38:32,664 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-27 11:38:32,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 511 events. 232/511 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2493 event pairs, 121 based on Foata normal form. 12/441 useless extension candidates. Maximal degree in co-relation 1061. Up to 267 conditions per place. [2023-08-27 11:38:32,667 INFO L140 encePairwiseOnDemand]: 319/326 looper letters, 44 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-27 11:38:32,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 227 flow [2023-08-27 11:38:32,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:38:32,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:38:32,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-27 11:38:32,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4938650306748466 [2023-08-27 11:38:32,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-27 11:38:32,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-27 11:38:32,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:32,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-27 11:38:32,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2023-08-27 11:38:32,672 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) [2023-08-27 11:38:32,673 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) [2023-08-27 11:38:32,673 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 114 flow. Second operand 3 states and 483 transitions. [2023-08-27 11:38:32,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 227 flow [2023-08-27 11:38:32,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 219 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:38:32,675 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 106 flow [2023-08-27 11:38:32,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-08-27 11:38:32,676 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2023-08-27 11:38:32,676 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 106 flow [2023-08-27 11:38:32,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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) [2023-08-27 11:38:32,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:32,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:32,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:38:32,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 11:38:32,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:32,678 INFO L85 PathProgramCache]: Analyzing trace with hash 337875805, now seen corresponding path program 1 times [2023-08-27 11:38:32,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:32,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400621809] [2023-08-27 11:38:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:32,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:32,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400621809] [2023-08-27 11:38:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400621809] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:38:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181712854] [2023-08-27 11:38:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:32,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:32,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:32,730 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:38:32,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 11:38:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:32,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:38:32,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:38:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:32,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:38:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:32,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181712854] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:38:32,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:38:32,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:38:32,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266992614] [2023-08-27 11:38:32,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:38:32,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:38:32,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:32,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:38:32,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:38:32,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 326 [2023-08-27 11:38:32,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 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) [2023-08-27 11:38:32,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:32,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 326 [2023-08-27 11:38:32,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:32,952 INFO L124 PetriNetUnfolderBase]: 41/115 cut-off events. [2023-08-27 11:38:32,953 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-27 11:38:32,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 115 events. 41/115 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 355 event pairs, 18 based on Foata normal form. 20/126 useless extension candidates. Maximal degree in co-relation 239. Up to 80 conditions per place. [2023-08-27 11:38:32,954 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 29 selfloop transitions, 2 changer transitions 15/50 dead transitions. [2023-08-27 11:38:32,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 209 flow [2023-08-27 11:38:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:38:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:38:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2023-08-27 11:38:32,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831288343558282 [2023-08-27 11:38:32,956 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2023-08-27 11:38:32,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2023-08-27 11:38:32,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:32,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2023-08-27 11:38:32,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 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) [2023-08-27 11:38:32,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 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) [2023-08-27 11:38:32,961 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 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) [2023-08-27 11:38:32,961 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 106 flow. Second operand 4 states and 630 transitions. [2023-08-27 11:38:32,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 209 flow [2023-08-27 11:38:32,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 195 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:38:32,963 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 51 flow [2023-08-27 11:38:32,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=51, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-08-27 11:38:32,963 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -19 predicate places. [2023-08-27 11:38:32,964 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 51 flow [2023-08-27 11:38:32,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 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) [2023-08-27 11:38:32,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:32,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:32,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 11:38:33,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:33,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 11:38:33,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1748363099, now seen corresponding path program 1 times [2023-08-27 11:38:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:33,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155352126] [2023-08-27 11:38:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:33,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:33,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:33,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155352126] [2023-08-27 11:38:33,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155352126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:33,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:33,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:38:33,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911081954] [2023-08-27 11:38:33,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:33,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:38:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:33,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:38:33,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:38:33,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 326 [2023-08-27 11:38:33,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 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) [2023-08-27 11:38:33,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:33,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 326 [2023-08-27 11:38:33,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:33,304 INFO L124 PetriNetUnfolderBase]: 16/50 cut-off events. [2023-08-27 11:38:33,304 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 11:38:33,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 50 events. 16/50 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 2 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 96. Up to 35 conditions per place. [2023-08-27 11:38:33,305 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 12 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-08-27 11:38:33,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 71 flow [2023-08-27 11:38:33,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:38:33,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:38:33,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 611 transitions. [2023-08-27 11:38:33,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46855828220858897 [2023-08-27 11:38:33,307 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 611 transitions. [2023-08-27 11:38:33,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 611 transitions. [2023-08-27 11:38:33,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:33,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 611 transitions. [2023-08-27 11:38:33,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 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) [2023-08-27 11:38:33,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 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) [2023-08-27 11:38:33,312 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 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) [2023-08-27 11:38:33,312 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 51 flow. Second operand 4 states and 611 transitions. [2023-08-27 11:38:33,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 71 flow [2023-08-27 11:38:33,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 16 transitions, 67 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:38:33,314 INFO L231 Difference]: Finished difference. Result has 21 places, 14 transitions, 38 flow [2023-08-27 11:38:33,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2023-08-27 11:38:33,316 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -32 predicate places. [2023-08-27 11:38:33,316 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 38 flow [2023-08-27 11:38:33,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 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) [2023-08-27 11:38:33,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:33,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:33,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:38:33,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 11:38:33,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:33,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1920613100, now seen corresponding path program 1 times [2023-08-27 11:38:33,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:33,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317729306] [2023-08-27 11:38:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:33,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:33,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:33,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317729306] [2023-08-27 11:38:33,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317729306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:33,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:33,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:38:33,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902460309] [2023-08-27 11:38:33,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:33,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:38:33,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:38:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:38:33,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 326 [2023-08-27 11:38:33,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 38 flow. Second operand has 4 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 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) [2023-08-27 11:38:33,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:33,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 326 [2023-08-27 11:38:33,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:33,415 INFO L124 PetriNetUnfolderBase]: 12/42 cut-off events. [2023-08-27 11:38:33,415 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:38:33,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 42 events. 12/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 8 based on Foata normal form. 3/44 useless extension candidates. Maximal degree in co-relation 76. Up to 25 conditions per place. [2023-08-27 11:38:33,416 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2023-08-27 11:38:33,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 65 flow [2023-08-27 11:38:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:38:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:38:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 589 transitions. [2023-08-27 11:38:33,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4516871165644172 [2023-08-27 11:38:33,418 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 589 transitions. [2023-08-27 11:38:33,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 589 transitions. [2023-08-27 11:38:33,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:33,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 589 transitions. [2023-08-27 11:38:33,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 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) [2023-08-27 11:38:33,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 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) [2023-08-27 11:38:33,422 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 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) [2023-08-27 11:38:33,423 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 38 flow. Second operand 4 states and 589 transitions. [2023-08-27 11:38:33,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 65 flow [2023-08-27 11:38:33,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 62 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:38:33,423 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-27 11:38:33,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-27 11:38:33,424 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -32 predicate places. [2023-08-27 11:38:33,424 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-27 11:38:33,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 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) [2023-08-27 11:38:33,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-08-27 11:38:33,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-27 11:38:33,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (18 of 21 remaining) [2023-08-27 11:38:33,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-27 11:38:33,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-27 11:38:33,427 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-27 11:38:33,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-27 11:38:33,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-27 11:38:33,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-27 11:38:33,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-27 11:38:33,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-27 11:38:33,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-27 11:38:33,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-27 11:38:33,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-27 11:38:33,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-27 11:38:33,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-27 11:38:33,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-27 11:38:33,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-27 11:38:33,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-27 11:38:33,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-27 11:38:33,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-27 11:38:33,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:38:33,430 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-27 11:38:33,431 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:38:33,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 175 transitions, 358 flow [2023-08-27 11:38:33,454 INFO L124 PetriNetUnfolderBase]: 26/218 cut-off events. [2023-08-27 11:38:33,454 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:38:33,455 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. [2023-08-27 11:38:33,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 175 transitions, 358 flow [2023-08-27 11:38:33,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 166 transitions, 337 flow [2023-08-27 11:38:33,457 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:38:33,457 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 166 transitions, 337 flow [2023-08-27 11:38:33,457 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 166 transitions, 337 flow [2023-08-27 11:38:33,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 166 transitions, 337 flow [2023-08-27 11:38:33,479 INFO L124 PetriNetUnfolderBase]: 25/209 cut-off events. [2023-08-27 11:38:33,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:38:33,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 209 events. 25/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 622 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-08-27 11:38:33,483 INFO L119 LiptonReduction]: Number of co-enabled transitions 8268 [2023-08-27 11:38:36,885 INFO L134 LiptonReduction]: Checked pairs total: 15696 [2023-08-27 11:38:36,885 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-08-27 11:38:36,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:38:36,887 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;@6884255c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:38:36,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:38:36,889 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:38:36,889 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-27 11:38:36,889 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:38:36,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:36,890 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:38:36,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:38:36,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:36,890 INFO L85 PathProgramCache]: Analyzing trace with hash -964599202, now seen corresponding path program 1 times [2023-08-27 11:38:36,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:36,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360859729] [2023-08-27 11:38:36,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:36,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:38:36,903 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:38:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:38:36,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:38:36,923 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:38:36,923 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:38:36,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 11:38:36,924 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:38:36,924 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:38:36,924 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:38:36,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:38:36,952 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 11:38:36,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 255 transitions, 528 flow [2023-08-27 11:38:37,021 INFO L124 PetriNetUnfolderBase]: 48/378 cut-off events. [2023-08-27 11:38:37,021 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:38:37,025 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. [2023-08-27 11:38:37,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 255 transitions, 528 flow [2023-08-27 11:38:37,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 255 transitions, 528 flow [2023-08-27 11:38:37,029 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:38:37,030 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 255 transitions, 528 flow [2023-08-27 11:38:37,030 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 255 transitions, 528 flow [2023-08-27 11:38:37,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 255 transitions, 528 flow [2023-08-27 11:38:37,079 INFO L124 PetriNetUnfolderBase]: 48/378 cut-off events. [2023-08-27 11:38:37,079 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:38:37,083 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. [2023-08-27 11:38:37,100 INFO L119 LiptonReduction]: Number of co-enabled transitions 31668 [2023-08-27 11:38:40,724 INFO L134 LiptonReduction]: Checked pairs total: 86169 [2023-08-27 11:38:40,725 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-27 11:38:40,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:38:40,726 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;@6884255c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:38:40,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-27 11:38:40,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:38:40,728 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-27 11:38:40,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:38:40,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:40,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:38:40,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:38:40,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:40,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1312439026, now seen corresponding path program 1 times [2023-08-27 11:38:40,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:40,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800337305] [2023-08-27 11:38:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:40,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:40,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:40,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800337305] [2023-08-27 11:38:40,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800337305] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:40,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:40,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:38:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648549772] [2023-08-27 11:38:40,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:40,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:38:40,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:40,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:38:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:38:40,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 457 [2023-08-27 11:38:40,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 118 transitions, 254 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) [2023-08-27 11:38:40,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:40,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 457 [2023-08-27 11:38:40,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:43,365 INFO L124 PetriNetUnfolderBase]: 23347/37049 cut-off events. [2023-08-27 11:38:43,366 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2023-08-27 11:38:43,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72998 conditions, 37049 events. 23347/37049 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 287575 event pairs, 10724 based on Foata normal form. 2499/27848 useless extension candidates. Maximal degree in co-relation 4071. Up to 35707 conditions per place. [2023-08-27 11:38:43,586 INFO L140 encePairwiseOnDemand]: 426/457 looper letters, 108 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-08-27 11:38:43,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 123 transitions, 484 flow [2023-08-27 11:38:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:38:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:38:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2023-08-27 11:38:43,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574033552151714 [2023-08-27 11:38:43,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2023-08-27 11:38:43,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2023-08-27 11:38:43,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:43,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2023-08-27 11:38:43,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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) [2023-08-27 11:38:43,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-27 11:38:43,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-27 11:38:43,595 INFO L175 Difference]: Start difference. First operand has 93 places, 118 transitions, 254 flow. Second operand 3 states and 787 transitions. [2023-08-27 11:38:43,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 123 transitions, 484 flow [2023-08-27 11:38:43,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 123 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:38:43,602 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 218 flow [2023-08-27 11:38:43,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2023-08-27 11:38:43,604 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 3 predicate places. [2023-08-27 11:38:43,604 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 218 flow [2023-08-27 11:38:43,604 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) [2023-08-27 11:38:43,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:43,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:43,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:38:43,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:38:43,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:43,605 INFO L85 PathProgramCache]: Analyzing trace with hash 391654062, now seen corresponding path program 1 times [2023-08-27 11:38:43,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:43,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574084321] [2023-08-27 11:38:43,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:43,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:43,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:43,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574084321] [2023-08-27 11:38:43,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574084321] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:43,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:43,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:38:43,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188073610] [2023-08-27 11:38:43,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:43,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:38:43,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:38:43,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:38:43,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 457 [2023-08-27 11:38:43,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 218 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) [2023-08-27 11:38:43,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:43,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 457 [2023-08-27 11:38:43,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:45,982 INFO L124 PetriNetUnfolderBase]: 21312/33438 cut-off events. [2023-08-27 11:38:45,982 INFO L125 PetriNetUnfolderBase]: For 1783/1783 co-relation queries the response was YES. [2023-08-27 11:38:46,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69499 conditions, 33438 events. 21312/33438 cut-off events. For 1783/1783 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 251350 event pairs, 7646 based on Foata normal form. 0/24221 useless extension candidates. Maximal degree in co-relation 69329. Up to 29357 conditions per place. [2023-08-27 11:38:46,180 INFO L140 encePairwiseOnDemand]: 443/457 looper letters, 111 selfloop transitions, 5 changer transitions 0/128 dead transitions. [2023-08-27 11:38:46,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 128 transitions, 536 flow [2023-08-27 11:38:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:38:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:38:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 729 transitions. [2023-08-27 11:38:46,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317286652078774 [2023-08-27 11:38:46,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 729 transitions. [2023-08-27 11:38:46,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 729 transitions. [2023-08-27 11:38:46,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:46,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 729 transitions. [2023-08-27 11:38:46,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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) [2023-08-27 11:38:46,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-27 11:38:46,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-27 11:38:46,189 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 218 flow. Second operand 3 states and 729 transitions. [2023-08-27 11:38:46,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 128 transitions, 536 flow [2023-08-27 11:38:46,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 128 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:38:46,193 INFO L231 Difference]: Finished difference. Result has 98 places, 97 transitions, 265 flow [2023-08-27 11:38:46,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=98, PETRI_TRANSITIONS=97} [2023-08-27 11:38:46,196 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2023-08-27 11:38:46,196 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 97 transitions, 265 flow [2023-08-27 11:38:46,196 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) [2023-08-27 11:38:46,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:46,196 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:38:46,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:38:46,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:38:46,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:46,197 INFO L85 PathProgramCache]: Analyzing trace with hash -453000331, now seen corresponding path program 1 times [2023-08-27 11:38:46,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:46,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009164395] [2023-08-27 11:38:46,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:46,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:46,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:46,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009164395] [2023-08-27 11:38:46,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009164395] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:38:46,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497956193] [2023-08-27 11:38:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:46,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:46,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:46,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:38:46,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 11:38:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:46,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 11:38:46,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:38:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:46,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:38:46,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497956193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:46,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:38:46,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 11:38:46,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539825699] [2023-08-27 11:38:46,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:46,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:38:46,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:46,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:38:46,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:38:46,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 457 [2023-08-27 11:38:46,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 97 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 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) [2023-08-27 11:38:46,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:46,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 457 [2023-08-27 11:38:46,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:48,551 INFO L124 PetriNetUnfolderBase]: 19152/31529 cut-off events. [2023-08-27 11:38:48,551 INFO L125 PetriNetUnfolderBase]: For 3392/3392 co-relation queries the response was YES. [2023-08-27 11:38:48,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67657 conditions, 31529 events. 19152/31529 cut-off events. For 3392/3392 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 259405 event pairs, 2408 based on Foata normal form. 0/25225 useless extension candidates. Maximal degree in co-relation 22956. Up to 21056 conditions per place. [2023-08-27 11:38:48,735 INFO L140 encePairwiseOnDemand]: 453/457 looper letters, 168 selfloop transitions, 3 changer transitions 0/184 dead transitions. [2023-08-27 11:38:48,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 184 transitions, 821 flow [2023-08-27 11:38:48,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:38:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:38:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1012 transitions. [2023-08-27 11:38:48,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536105032822757 [2023-08-27 11:38:48,738 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1012 transitions. [2023-08-27 11:38:48,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1012 transitions. [2023-08-27 11:38:48,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:48,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1012 transitions. [2023-08-27 11:38:48,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2023-08-27 11:38:48,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 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) [2023-08-27 11:38:48,744 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 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) [2023-08-27 11:38:48,744 INFO L175 Difference]: Start difference. First operand has 98 places, 97 transitions, 265 flow. Second operand 4 states and 1012 transitions. [2023-08-27 11:38:48,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 184 transitions, 821 flow [2023-08-27 11:38:48,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 184 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:38:48,750 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 262 flow [2023-08-27 11:38:48,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2023-08-27 11:38:48,751 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 6 predicate places. [2023-08-27 11:38:48,751 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 262 flow [2023-08-27 11:38:48,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 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) [2023-08-27 11:38:48,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:48,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:38:48,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 11:38:48,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 11:38:48,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:38:48,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:48,958 INFO L85 PathProgramCache]: Analyzing trace with hash -453000310, now seen corresponding path program 1 times [2023-08-27 11:38:48,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:48,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298618872] [2023-08-27 11:38:48,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:48,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:38:48,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298618872] [2023-08-27 11:38:48,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298618872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:48,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:38:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151120783] [2023-08-27 11:38:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:48,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:38:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:38:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:38:48,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 457 [2023-08-27 11:38:48,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 262 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) [2023-08-27 11:38:48,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:48,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 457 [2023-08-27 11:38:48,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:50,705 INFO L124 PetriNetUnfolderBase]: 17654/28982 cut-off events. [2023-08-27 11:38:50,705 INFO L125 PetriNetUnfolderBase]: For 2762/2762 co-relation queries the response was YES. [2023-08-27 11:38:50,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62192 conditions, 28982 events. 17654/28982 cut-off events. For 2762/2762 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 232639 event pairs, 2112 based on Foata normal form. 0/23764 useless extension candidates. Maximal degree in co-relation 27396. Up to 23357 conditions per place. [2023-08-27 11:38:50,966 INFO L140 encePairwiseOnDemand]: 453/457 looper letters, 141 selfloop transitions, 4 changer transitions 0/158 dead transitions. [2023-08-27 11:38:50,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 158 transitions, 706 flow [2023-08-27 11:38:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:38:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:38:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-08-27 11:38:50,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638220277169949 [2023-08-27 11:38:50,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-08-27 11:38:50,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-08-27 11:38:50,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:50,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-08-27 11:38:50,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 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) [2023-08-27 11:38:50,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-27 11:38:50,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-27 11:38:50,982 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 262 flow. Second operand 3 states and 773 transitions. [2023-08-27 11:38:50,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 158 transitions, 706 flow [2023-08-27 11:38:50,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 158 transitions, 702 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:38:50,989 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 270 flow [2023-08-27 11:38:50,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2023-08-27 11:38:50,990 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 6 predicate places. [2023-08-27 11:38:50,990 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 270 flow [2023-08-27 11:38:50,991 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) [2023-08-27 11:38:50,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:50,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:50,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 11:38:50,991 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:38:50,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:50,991 INFO L85 PathProgramCache]: Analyzing trace with hash 24411524, now seen corresponding path program 1 times [2023-08-27 11:38:50,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:50,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906650523] [2023-08-27 11:38:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:50,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:51,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:51,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906650523] [2023-08-27 11:38:51,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906650523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:51,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:51,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:38:51,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888339810] [2023-08-27 11:38:51,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:51,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:38:51,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:51,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:38:51,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:38:51,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 457 [2023-08-27 11:38:51,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 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) [2023-08-27 11:38:51,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:51,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 457 [2023-08-27 11:38:51,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:52,851 INFO L124 PetriNetUnfolderBase]: 20038/32067 cut-off events. [2023-08-27 11:38:52,851 INFO L125 PetriNetUnfolderBase]: For 11542/11542 co-relation queries the response was YES. [2023-08-27 11:38:52,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71918 conditions, 32067 events. 20038/32067 cut-off events. For 11542/11542 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 244667 event pairs, 4299 based on Foata normal form. 0/26671 useless extension candidates. Maximal degree in co-relation 34078. Up to 19256 conditions per place. [2023-08-27 11:38:52,980 INFO L140 encePairwiseOnDemand]: 431/457 looper letters, 220 selfloop transitions, 28 changer transitions 0/260 dead transitions. [2023-08-27 11:38:52,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 260 transitions, 1221 flow [2023-08-27 11:38:52,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:38:52,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:38:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1623 transitions. [2023-08-27 11:38:52,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073460456392622 [2023-08-27 11:38:52,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1623 transitions. [2023-08-27 11:38:52,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1623 transitions. [2023-08-27 11:38:52,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:52,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1623 transitions. [2023-08-27 11:38:52,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 231.85714285714286) internal successors, (1623), 7 states have internal predecessors, (1623), 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) [2023-08-27 11:38:52,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 457.0) internal successors, (3656), 8 states have internal predecessors, (3656), 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) [2023-08-27 11:38:52,998 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 457.0) internal successors, (3656), 8 states have internal predecessors, (3656), 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) [2023-08-27 11:38:52,998 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 270 flow. Second operand 7 states and 1623 transitions. [2023-08-27 11:38:52,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 260 transitions, 1221 flow [2023-08-27 11:38:53,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 260 transitions, 1204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:38:53,005 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 486 flow [2023-08-27 11:38:53,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2023-08-27 11:38:53,006 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 14 predicate places. [2023-08-27 11:38:53,006 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 486 flow [2023-08-27 11:38:53,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 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) [2023-08-27 11:38:53,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:53,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:53,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 11:38:53,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:38:53,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:53,007 INFO L85 PathProgramCache]: Analyzing trace with hash 24411467, now seen corresponding path program 1 times [2023-08-27 11:38:53,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:53,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671352881] [2023-08-27 11:38:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:53,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:53,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:53,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671352881] [2023-08-27 11:38:53,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671352881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:53,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:53,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:38:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630318316] [2023-08-27 11:38:53,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:53,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:38:53,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:38:53,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:38:53,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 457 [2023-08-27 11:38:53,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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) [2023-08-27 11:38:53,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:53,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 457 [2023-08-27 11:38:53,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:56,019 INFO L124 PetriNetUnfolderBase]: 25162/41205 cut-off events. [2023-08-27 11:38:56,020 INFO L125 PetriNetUnfolderBase]: For 23836/23836 co-relation queries the response was YES. [2023-08-27 11:38:56,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101939 conditions, 41205 events. 25162/41205 cut-off events. For 23836/23836 co-relation queries the response was YES. Maximal size of possible extension queue 1415. Compared 338792 event pairs, 9790 based on Foata normal form. 0/38831 useless extension candidates. Maximal degree in co-relation 96469. Up to 23539 conditions per place. [2023-08-27 11:38:56,306 INFO L140 encePairwiseOnDemand]: 453/457 looper letters, 266 selfloop transitions, 4 changer transitions 0/281 dead transitions. [2023-08-27 11:38:56,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 281 transitions, 1669 flow [2023-08-27 11:38:56,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:38:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:38:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1282 transitions. [2023-08-27 11:38:56,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610503282275712 [2023-08-27 11:38:56,309 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1282 transitions. [2023-08-27 11:38:56,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1282 transitions. [2023-08-27 11:38:56,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:56,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1282 transitions. [2023-08-27 11:38:56,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 256.4) internal successors, (1282), 5 states have internal predecessors, (1282), 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) [2023-08-27 11:38:56,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-27 11:38:56,316 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-27 11:38:56,316 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 486 flow. Second operand 5 states and 1282 transitions. [2023-08-27 11:38:56,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 281 transitions, 1669 flow [2023-08-27 11:38:56,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 281 transitions, 1654 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:38:56,373 INFO L231 Difference]: Finished difference. Result has 113 places, 121 transitions, 503 flow [2023-08-27 11:38:56,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=503, PETRI_PLACES=113, PETRI_TRANSITIONS=121} [2023-08-27 11:38:56,374 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 20 predicate places. [2023-08-27 11:38:56,374 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 121 transitions, 503 flow [2023-08-27 11:38:56,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 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) [2023-08-27 11:38:56,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:56,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:56,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 11:38:56,375 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:38:56,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:56,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1770391168, now seen corresponding path program 1 times [2023-08-27 11:38:56,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:56,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555258598] [2023-08-27 11:38:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:56,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:56,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555258598] [2023-08-27 11:38:56,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555258598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:56,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:56,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:38:56,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475263134] [2023-08-27 11:38:56,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:56,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:38:56,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:56,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:38:56,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:38:56,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 457 [2023-08-27 11:38:56,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 121 transitions, 503 flow. Second operand has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 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) [2023-08-27 11:38:56,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:56,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 457 [2023-08-27 11:38:56,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:59,365 INFO L124 PetriNetUnfolderBase]: 26533/43390 cut-off events. [2023-08-27 11:38:59,365 INFO L125 PetriNetUnfolderBase]: For 22922/23052 co-relation queries the response was YES. [2023-08-27 11:38:59,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106775 conditions, 43390 events. 26533/43390 cut-off events. For 22922/23052 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 354132 event pairs, 5936 based on Foata normal form. 1189/42226 useless extension candidates. Maximal degree in co-relation 61799. Up to 27349 conditions per place. [2023-08-27 11:38:59,578 INFO L140 encePairwiseOnDemand]: 431/457 looper letters, 240 selfloop transitions, 32 changer transitions 0/286 dead transitions. [2023-08-27 11:38:59,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 286 transitions, 1570 flow [2023-08-27 11:38:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:38:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:38:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1623 transitions. [2023-08-27 11:38:59,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073460456392622 [2023-08-27 11:38:59,582 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1623 transitions. [2023-08-27 11:38:59,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1623 transitions. [2023-08-27 11:38:59,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:59,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1623 transitions. [2023-08-27 11:38:59,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 231.85714285714286) internal successors, (1623), 7 states have internal predecessors, (1623), 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) [2023-08-27 11:38:59,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 457.0) internal successors, (3656), 8 states have internal predecessors, (3656), 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) [2023-08-27 11:38:59,591 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 457.0) internal successors, (3656), 8 states have internal predecessors, (3656), 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) [2023-08-27 11:38:59,592 INFO L175 Difference]: Start difference. First operand has 113 places, 121 transitions, 503 flow. Second operand 7 states and 1623 transitions. [2023-08-27 11:38:59,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 286 transitions, 1570 flow [2023-08-27 11:38:59,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 286 transitions, 1568 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:38:59,666 INFO L231 Difference]: Finished difference. Result has 122 places, 146 transitions, 807 flow [2023-08-27 11:38:59,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=807, PETRI_PLACES=122, PETRI_TRANSITIONS=146} [2023-08-27 11:38:59,667 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 29 predicate places. [2023-08-27 11:38:59,667 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 146 transitions, 807 flow [2023-08-27 11:38:59,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 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) [2023-08-27 11:38:59,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:59,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:59,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 11:38:59,668 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:38:59,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:59,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1770391169, now seen corresponding path program 1 times [2023-08-27 11:38:59,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:59,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342107268] [2023-08-27 11:38:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:59,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:38:59,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:59,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342107268] [2023-08-27 11:38:59,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342107268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:59,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:59,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:38:59,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040880320] [2023-08-27 11:38:59,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:59,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:38:59,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:59,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:38:59,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:38:59,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 457 [2023-08-27 11:38:59,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 146 transitions, 807 flow. Second operand has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 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) [2023-08-27 11:38:59,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:59,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 457 [2023-08-27 11:38:59,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:02,835 INFO L124 PetriNetUnfolderBase]: 25255/41592 cut-off events. [2023-08-27 11:39:02,835 INFO L125 PetriNetUnfolderBase]: For 44480/44610 co-relation queries the response was YES. [2023-08-27 11:39:02,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113832 conditions, 41592 events. 25255/41592 cut-off events. For 44480/44610 co-relation queries the response was YES. Maximal size of possible extension queue 1474. Compared 340515 event pairs, 5614 based on Foata normal form. 907/40225 useless extension candidates. Maximal degree in co-relation 101081. Up to 26168 conditions per place. [2023-08-27 11:39:03,052 INFO L140 encePairwiseOnDemand]: 434/457 looper letters, 239 selfloop transitions, 44 changer transitions 0/297 dead transitions. [2023-08-27 11:39:03,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 297 transitions, 1841 flow [2023-08-27 11:39:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:39:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:39:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1620 transitions. [2023-08-27 11:39:03,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506408252578931 [2023-08-27 11:39:03,056 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1620 transitions. [2023-08-27 11:39:03,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1620 transitions. [2023-08-27 11:39:03,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:03,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1620 transitions. [2023-08-27 11:39:03,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 231.42857142857142) internal successors, (1620), 7 states have internal predecessors, (1620), 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) [2023-08-27 11:39:03,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 457.0) internal successors, (3656), 8 states have internal predecessors, (3656), 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) [2023-08-27 11:39:03,064 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 457.0) internal successors, (3656), 8 states have internal predecessors, (3656), 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) [2023-08-27 11:39:03,064 INFO L175 Difference]: Start difference. First operand has 122 places, 146 transitions, 807 flow. Second operand 7 states and 1620 transitions. [2023-08-27 11:39:03,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 297 transitions, 1841 flow [2023-08-27 11:39:03,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 297 transitions, 1839 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-27 11:39:03,338 INFO L231 Difference]: Finished difference. Result has 130 places, 159 transitions, 1075 flow [2023-08-27 11:39:03,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1075, PETRI_PLACES=130, PETRI_TRANSITIONS=159} [2023-08-27 11:39:03,338 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 37 predicate places. [2023-08-27 11:39:03,338 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 159 transitions, 1075 flow [2023-08-27 11:39:03,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 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) [2023-08-27 11:39:03,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:03,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:03,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 11:39:03,339 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:03,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:03,339 INFO L85 PathProgramCache]: Analyzing trace with hash 868017457, now seen corresponding path program 1 times [2023-08-27 11:39:03,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:03,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73981375] [2023-08-27 11:39:03,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:03,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:39:03,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:03,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73981375] [2023-08-27 11:39:03,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73981375] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:39:03,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855989146] [2023-08-27 11:39:03,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:03,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:03,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:39:03,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:39:03,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 11:39:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:03,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:39:03,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:39:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:39:03,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:39:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:39:03,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855989146] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:39:03,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:39:03,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:39:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223146438] [2023-08-27 11:39:03,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:39:03,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:03,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:03,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:39:03,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 457 [2023-08-27 11:39:03,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 159 transitions, 1075 flow. Second operand has 7 states, 7 states have (on average 215.28571428571428) internal successors, (1507), 7 states have internal predecessors, (1507), 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) [2023-08-27 11:39:03,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:03,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 457 [2023-08-27 11:39:03,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:04,073 INFO L124 PetriNetUnfolderBase]: 2131/4173 cut-off events. [2023-08-27 11:39:04,074 INFO L125 PetriNetUnfolderBase]: For 11273/11350 co-relation queries the response was YES. [2023-08-27 11:39:04,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13893 conditions, 4173 events. 2131/4173 cut-off events. For 11273/11350 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 30440 event pairs, 70 based on Foata normal form. 569/4705 useless extension candidates. Maximal degree in co-relation 13874. Up to 2678 conditions per place. [2023-08-27 11:39:04,092 INFO L140 encePairwiseOnDemand]: 454/457 looper letters, 172 selfloop transitions, 3 changer transitions 0/184 dead transitions. [2023-08-27 11:39:04,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 184 transitions, 1629 flow [2023-08-27 11:39:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:39:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:39:04,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1169 transitions. [2023-08-27 11:39:04,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115973741794311 [2023-08-27 11:39:04,095 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1169 transitions. [2023-08-27 11:39:04,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1169 transitions. [2023-08-27 11:39:04,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:04,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1169 transitions. [2023-08-27 11:39:04,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.8) internal successors, (1169), 5 states have internal predecessors, (1169), 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) [2023-08-27 11:39:04,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-27 11:39:04,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-27 11:39:04,101 INFO L175 Difference]: Start difference. First operand has 130 places, 159 transitions, 1075 flow. Second operand 5 states and 1169 transitions. [2023-08-27 11:39:04,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 184 transitions, 1629 flow [2023-08-27 11:39:04,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 184 transitions, 1506 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-08-27 11:39:04,112 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 595 flow [2023-08-27 11:39:04,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2023-08-27 11:39:04,113 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -1 predicate places. [2023-08-27 11:39:04,113 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 595 flow [2023-08-27 11:39:04,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.28571428571428) internal successors, (1507), 7 states have internal predecessors, (1507), 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) [2023-08-27 11:39:04,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:04,114 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:04,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 11:39:04,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:39:04,319 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:04,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:04,319 INFO L85 PathProgramCache]: Analyzing trace with hash -848459067, now seen corresponding path program 1 times [2023-08-27 11:39:04,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:04,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058578951] [2023-08-27 11:39:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:04,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:04,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:04,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058578951] [2023-08-27 11:39:04,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058578951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:04,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:04,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:39:04,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601899959] [2023-08-27 11:39:04,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:04,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:39:04,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:04,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:39:04,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:39:04,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 457 [2023-08-27 11:39:04,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 595 flow. Second operand has 4 states, 4 states have (on average 217.25) internal successors, (869), 4 states have internal predecessors, (869), 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) [2023-08-27 11:39:04,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:04,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 457 [2023-08-27 11:39:04,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:04,596 INFO L124 PetriNetUnfolderBase]: 1290/2352 cut-off events. [2023-08-27 11:39:04,596 INFO L125 PetriNetUnfolderBase]: For 5267/5267 co-relation queries the response was YES. [2023-08-27 11:39:04,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7773 conditions, 2352 events. 1290/2352 cut-off events. For 5267/5267 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13453 event pairs, 251 based on Foata normal form. 0/2350 useless extension candidates. Maximal degree in co-relation 7758. Up to 1975 conditions per place. [2023-08-27 11:39:04,605 INFO L140 encePairwiseOnDemand]: 454/457 looper letters, 75 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-27 11:39:04,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 83 transitions, 643 flow [2023-08-27 11:39:04,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:39:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:39:04,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 908 transitions. [2023-08-27 11:39:04,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49671772428884026 [2023-08-27 11:39:04,608 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 908 transitions. [2023-08-27 11:39:04,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 908 transitions. [2023-08-27 11:39:04,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:04,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 908 transitions. [2023-08-27 11:39:04,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 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) [2023-08-27 11:39:04,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 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) [2023-08-27 11:39:04,612 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 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) [2023-08-27 11:39:04,612 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 595 flow. Second operand 4 states and 908 transitions. [2023-08-27 11:39:04,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 83 transitions, 643 flow [2023-08-27 11:39:04,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 621 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 11:39:04,621 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 417 flow [2023-08-27 11:39:04,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=417, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2023-08-27 11:39:04,622 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -16 predicate places. [2023-08-27 11:39:04,622 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 417 flow [2023-08-27 11:39:04,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.25) internal successors, (869), 4 states have internal predecessors, (869), 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) [2023-08-27 11:39:04,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:04,622 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:04,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 11:39:04,622 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:04,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:04,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1378461403, now seen corresponding path program 1 times [2023-08-27 11:39:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:04,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784417701] [2023-08-27 11:39:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:04,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:04,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:04,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784417701] [2023-08-27 11:39:04,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784417701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:04,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:04,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:39:04,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343069240] [2023-08-27 11:39:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:04,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:39:04,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:04,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:39:04,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:39:04,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 457 [2023-08-27 11:39:04,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 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) [2023-08-27 11:39:04,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:04,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 457 [2023-08-27 11:39:04,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:04,967 INFO L124 PetriNetUnfolderBase]: 1394/2444 cut-off events. [2023-08-27 11:39:04,967 INFO L125 PetriNetUnfolderBase]: For 4406/4406 co-relation queries the response was YES. [2023-08-27 11:39:04,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7713 conditions, 2444 events. 1394/2444 cut-off events. For 4406/4406 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13876 event pairs, 328 based on Foata normal form. 63/2505 useless extension candidates. Maximal degree in co-relation 7699. Up to 1303 conditions per place. [2023-08-27 11:39:04,981 INFO L140 encePairwiseOnDemand]: 443/457 looper letters, 107 selfloop transitions, 26 changer transitions 1/140 dead transitions. [2023-08-27 11:39:04,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 140 transitions, 987 flow [2023-08-27 11:39:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:39:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:39:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1487 transitions. [2023-08-27 11:39:04,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46483276023757425 [2023-08-27 11:39:04,984 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1487 transitions. [2023-08-27 11:39:04,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1487 transitions. [2023-08-27 11:39:04,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:04,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1487 transitions. [2023-08-27 11:39:04,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 212.42857142857142) internal successors, (1487), 7 states have internal predecessors, (1487), 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) [2023-08-27 11:39:04,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 457.0) internal successors, (3656), 8 states have internal predecessors, (3656), 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) [2023-08-27 11:39:04,991 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 457.0) internal successors, (3656), 8 states have internal predecessors, (3656), 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) [2023-08-27 11:39:04,991 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 417 flow. Second operand 7 states and 1487 transitions. [2023-08-27 11:39:04,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 140 transitions, 987 flow [2023-08-27 11:39:04,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 140 transitions, 974 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 11:39:04,999 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 632 flow [2023-08-27 11:39:04,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2023-08-27 11:39:04,999 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -9 predicate places. [2023-08-27 11:39:04,999 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 632 flow [2023-08-27 11:39:05,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 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) [2023-08-27 11:39:05,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:05,000 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:05,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 11:39:05,000 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:05,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:05,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1378461322, now seen corresponding path program 1 times [2023-08-27 11:39:05,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:05,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797751456] [2023-08-27 11:39:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:05,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:05,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:05,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797751456] [2023-08-27 11:39:05,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797751456] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:05,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:05,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:39:05,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092880558] [2023-08-27 11:39:05,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:05,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:39:05,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:05,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:39:05,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:39:05,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 457 [2023-08-27 11:39:05,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 632 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 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) [2023-08-27 11:39:05,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:05,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 457 [2023-08-27 11:39:05,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:05,390 INFO L124 PetriNetUnfolderBase]: 1239/2181 cut-off events. [2023-08-27 11:39:05,390 INFO L125 PetriNetUnfolderBase]: For 5980/5980 co-relation queries the response was YES. [2023-08-27 11:39:05,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7477 conditions, 2181 events. 1239/2181 cut-off events. For 5980/5980 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12024 event pairs, 310 based on Foata normal form. 63/2242 useless extension candidates. Maximal degree in co-relation 7459. Up to 1175 conditions per place. [2023-08-27 11:39:05,402 INFO L140 encePairwiseOnDemand]: 443/457 looper letters, 98 selfloop transitions, 25 changer transitions 3/132 dead transitions. [2023-08-27 11:39:05,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 132 transitions, 1004 flow [2023-08-27 11:39:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:39:05,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:39:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1484 transitions. [2023-08-27 11:39:05,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638949671772429 [2023-08-27 11:39:05,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1484 transitions. [2023-08-27 11:39:05,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1484 transitions. [2023-08-27 11:39:05,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:05,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1484 transitions. [2023-08-27 11:39:05,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 212.0) internal successors, (1484), 7 states have internal predecessors, (1484), 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) [2023-08-27 11:39:05,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 457.0) internal successors, (3656), 8 states have internal predecessors, (3656), 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) [2023-08-27 11:39:05,413 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 457.0) internal successors, (3656), 8 states have internal predecessors, (3656), 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) [2023-08-27 11:39:05,413 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 632 flow. Second operand 7 states and 1484 transitions. [2023-08-27 11:39:05,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 132 transitions, 1004 flow [2023-08-27 11:39:05,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 132 transitions, 978 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 11:39:05,431 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 587 flow [2023-08-27 11:39:05,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=587, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2023-08-27 11:39:05,431 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -5 predicate places. [2023-08-27 11:39:05,431 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 587 flow [2023-08-27 11:39:05,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 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) [2023-08-27 11:39:05,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:05,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:05,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 11:39:05,432 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:05,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash 978960517, now seen corresponding path program 1 times [2023-08-27 11:39:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:05,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895186344] [2023-08-27 11:39:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:05,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:05,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895186344] [2023-08-27 11:39:05,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895186344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:05,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:05,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:39:05,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349244968] [2023-08-27 11:39:05,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:05,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:05,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:05,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:05,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:39:05,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 457 [2023-08-27 11:39:05,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 587 flow. Second operand has 7 states, 7 states have (on average 193.85714285714286) internal successors, (1357), 7 states have internal predecessors, (1357), 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) [2023-08-27 11:39:05,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:05,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 457 [2023-08-27 11:39:05,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:06,041 INFO L124 PetriNetUnfolderBase]: 1334/2357 cut-off events. [2023-08-27 11:39:06,041 INFO L125 PetriNetUnfolderBase]: For 5834/5834 co-relation queries the response was YES. [2023-08-27 11:39:06,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8262 conditions, 2357 events. 1334/2357 cut-off events. For 5834/5834 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13253 event pairs, 227 based on Foata normal form. 18/2373 useless extension candidates. Maximal degree in co-relation 8243. Up to 982 conditions per place. [2023-08-27 11:39:06,053 INFO L140 encePairwiseOnDemand]: 444/457 looper letters, 125 selfloop transitions, 31 changer transitions 11/173 dead transitions. [2023-08-27 11:39:06,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 173 transitions, 1370 flow [2023-08-27 11:39:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:39:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:39:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1854 transitions. [2023-08-27 11:39:06,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45076586433260396 [2023-08-27 11:39:06,057 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1854 transitions. [2023-08-27 11:39:06,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1854 transitions. [2023-08-27 11:39:06,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:06,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1854 transitions. [2023-08-27 11:39:06,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2023-08-27 11:39:06,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 457.0) internal successors, (4570), 10 states have internal predecessors, (4570), 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) [2023-08-27 11:39:06,066 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 457.0) internal successors, (4570), 10 states have internal predecessors, (4570), 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) [2023-08-27 11:39:06,066 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 587 flow. Second operand 9 states and 1854 transitions. [2023-08-27 11:39:06,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 173 transitions, 1370 flow [2023-08-27 11:39:06,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 173 transitions, 1351 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 11:39:06,079 INFO L231 Difference]: Finished difference. Result has 96 places, 85 transitions, 770 flow [2023-08-27 11:39:06,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=770, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2023-08-27 11:39:06,080 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 3 predicate places. [2023-08-27 11:39:06,080 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 770 flow [2023-08-27 11:39:06,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.85714285714286) internal successors, (1357), 7 states have internal predecessors, (1357), 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) [2023-08-27 11:39:06,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:06,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:06,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 11:39:06,081 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:06,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2134192505, now seen corresponding path program 1 times [2023-08-27 11:39:06,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:06,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895997309] [2023-08-27 11:39:06,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:06,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:06,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:06,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895997309] [2023-08-27 11:39:06,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895997309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:06,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:06,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:39:06,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297667924] [2023-08-27 11:39:06,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:06,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:06,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:06,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:06,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:39:06,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 457 [2023-08-27 11:39:06,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 770 flow. Second operand has 7 states, 7 states have (on average 193.85714285714286) internal successors, (1357), 7 states have internal predecessors, (1357), 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) [2023-08-27 11:39:06,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:06,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 457 [2023-08-27 11:39:06,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:06,620 INFO L124 PetriNetUnfolderBase]: 1311/2340 cut-off events. [2023-08-27 11:39:06,620 INFO L125 PetriNetUnfolderBase]: For 7240/7240 co-relation queries the response was YES. [2023-08-27 11:39:06,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8649 conditions, 2340 events. 1311/2340 cut-off events. For 7240/7240 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13261 event pairs, 248 based on Foata normal form. 18/2356 useless extension candidates. Maximal degree in co-relation 8626. Up to 990 conditions per place. [2023-08-27 11:39:06,638 INFO L140 encePairwiseOnDemand]: 445/457 looper letters, 123 selfloop transitions, 27 changer transitions 18/174 dead transitions. [2023-08-27 11:39:06,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 174 transitions, 1458 flow [2023-08-27 11:39:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:39:06,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:39:06,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2046 transitions. [2023-08-27 11:39:06,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44770240700218816 [2023-08-27 11:39:06,643 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2046 transitions. [2023-08-27 11:39:06,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2046 transitions. [2023-08-27 11:39:06,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:06,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2046 transitions. [2023-08-27 11:39:06,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 204.6) internal successors, (2046), 10 states have internal predecessors, (2046), 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) [2023-08-27 11:39:06,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 457.0) internal successors, (5027), 11 states have internal predecessors, (5027), 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) [2023-08-27 11:39:06,653 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 457.0) internal successors, (5027), 11 states have internal predecessors, (5027), 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) [2023-08-27 11:39:06,653 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 770 flow. Second operand 10 states and 2046 transitions. [2023-08-27 11:39:06,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 174 transitions, 1458 flow [2023-08-27 11:39:06,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 174 transitions, 1413 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-27 11:39:06,682 INFO L231 Difference]: Finished difference. Result has 103 places, 84 transitions, 769 flow [2023-08-27 11:39:06,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=769, PETRI_PLACES=103, PETRI_TRANSITIONS=84} [2023-08-27 11:39:06,683 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 10 predicate places. [2023-08-27 11:39:06,683 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 84 transitions, 769 flow [2023-08-27 11:39:06,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.85714285714286) internal successors, (1357), 7 states have internal predecessors, (1357), 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) [2023-08-27 11:39:06,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:06,684 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:06,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 11:39:06,684 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:06,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2131537113, now seen corresponding path program 1 times [2023-08-27 11:39:06,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:06,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065500650] [2023-08-27 11:39:06,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:06,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:06,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:06,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065500650] [2023-08-27 11:39:06,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065500650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:06,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:06,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:39:06,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432824760] [2023-08-27 11:39:06,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:06,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:06,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:06,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:06,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:39:06,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 457 [2023-08-27 11:39:06,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 84 transitions, 769 flow. Second operand has 7 states, 7 states have (on average 192.85714285714286) internal successors, (1350), 7 states have internal predecessors, (1350), 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) [2023-08-27 11:39:06,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:06,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 457 [2023-08-27 11:39:06,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:07,211 INFO L124 PetriNetUnfolderBase]: 1359/2424 cut-off events. [2023-08-27 11:39:07,211 INFO L125 PetriNetUnfolderBase]: For 8944/8944 co-relation queries the response was YES. [2023-08-27 11:39:07,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9138 conditions, 2424 events. 1359/2424 cut-off events. For 8944/8944 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14069 event pairs, 202 based on Foata normal form. 33/2455 useless extension candidates. Maximal degree in co-relation 9111. Up to 998 conditions per place. [2023-08-27 11:39:07,227 INFO L140 encePairwiseOnDemand]: 444/457 looper letters, 131 selfloop transitions, 48 changer transitions 5/190 dead transitions. [2023-08-27 11:39:07,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 190 transitions, 1590 flow [2023-08-27 11:39:07,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:39:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:39:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2820 transitions. [2023-08-27 11:39:07,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44076273835573615 [2023-08-27 11:39:07,231 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2820 transitions. [2023-08-27 11:39:07,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2820 transitions. [2023-08-27 11:39:07,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:07,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2820 transitions. [2023-08-27 11:39:07,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 201.42857142857142) internal successors, (2820), 14 states have internal predecessors, (2820), 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) [2023-08-27 11:39:07,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 457.0) internal successors, (6855), 15 states have internal predecessors, (6855), 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) [2023-08-27 11:39:07,242 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 457.0) internal successors, (6855), 15 states have internal predecessors, (6855), 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) [2023-08-27 11:39:07,243 INFO L175 Difference]: Start difference. First operand has 103 places, 84 transitions, 769 flow. Second operand 14 states and 2820 transitions. [2023-08-27 11:39:07,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 190 transitions, 1590 flow [2023-08-27 11:39:07,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 190 transitions, 1511 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-08-27 11:39:07,277 INFO L231 Difference]: Finished difference. Result has 114 places, 98 transitions, 977 flow [2023-08-27 11:39:07,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=977, PETRI_PLACES=114, PETRI_TRANSITIONS=98} [2023-08-27 11:39:07,277 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 21 predicate places. [2023-08-27 11:39:07,277 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 98 transitions, 977 flow [2023-08-27 11:39:07,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 192.85714285714286) internal successors, (1350), 7 states have internal predecessors, (1350), 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) [2023-08-27 11:39:07,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:07,278 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:07,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 11:39:07,278 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:07,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:07,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1045499698, now seen corresponding path program 1 times [2023-08-27 11:39:07,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:07,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947805814] [2023-08-27 11:39:07,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:07,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:07,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:07,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947805814] [2023-08-27 11:39:07,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947805814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:07,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:07,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:39:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504046993] [2023-08-27 11:39:07,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:07,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:07,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:07,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:07,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:39:07,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 457 [2023-08-27 11:39:07,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 98 transitions, 977 flow. Second operand has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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) [2023-08-27 11:39:07,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:07,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 457 [2023-08-27 11:39:07,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:07,851 INFO L124 PetriNetUnfolderBase]: 1387/2488 cut-off events. [2023-08-27 11:39:07,851 INFO L125 PetriNetUnfolderBase]: For 11385/11385 co-relation queries the response was YES. [2023-08-27 11:39:07,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9869 conditions, 2488 events. 1387/2488 cut-off events. For 11385/11385 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14457 event pairs, 313 based on Foata normal form. 30/2516 useless extension candidates. Maximal degree in co-relation 9839. Up to 1412 conditions per place. [2023-08-27 11:39:07,864 INFO L140 encePairwiseOnDemand]: 444/457 looper letters, 134 selfloop transitions, 35 changer transitions 4/179 dead transitions. [2023-08-27 11:39:07,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 179 transitions, 1682 flow [2023-08-27 11:39:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:39:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:39:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2607 transitions. [2023-08-27 11:39:07,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43881501430735564 [2023-08-27 11:39:07,868 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2607 transitions. [2023-08-27 11:39:07,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2607 transitions. [2023-08-27 11:39:07,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:07,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2607 transitions. [2023-08-27 11:39:07,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 200.53846153846155) internal successors, (2607), 13 states have internal predecessors, (2607), 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) [2023-08-27 11:39:07,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 457.0) internal successors, (6398), 14 states have internal predecessors, (6398), 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) [2023-08-27 11:39:07,877 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 457.0) internal successors, (6398), 14 states have internal predecessors, (6398), 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) [2023-08-27 11:39:07,877 INFO L175 Difference]: Start difference. First operand has 114 places, 98 transitions, 977 flow. Second operand 13 states and 2607 transitions. [2023-08-27 11:39:07,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 179 transitions, 1682 flow [2023-08-27 11:39:07,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 179 transitions, 1611 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-08-27 11:39:07,918 INFO L231 Difference]: Finished difference. Result has 123 places, 105 transitions, 1091 flow [2023-08-27 11:39:07,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1091, PETRI_PLACES=123, PETRI_TRANSITIONS=105} [2023-08-27 11:39:07,918 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 30 predicate places. [2023-08-27 11:39:07,918 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 105 transitions, 1091 flow [2023-08-27 11:39:07,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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) [2023-08-27 11:39:07,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:07,919 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:07,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 11:39:07,919 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:07,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash 981615958, now seen corresponding path program 1 times [2023-08-27 11:39:07,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:07,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676674800] [2023-08-27 11:39:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:07,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:08,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:08,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676674800] [2023-08-27 11:39:08,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676674800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:08,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:08,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:39:08,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627310078] [2023-08-27 11:39:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:08,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:08,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:39:08,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 457 [2023-08-27 11:39:08,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 105 transitions, 1091 flow. Second operand has 7 states, 7 states have (on average 192.85714285714286) internal successors, (1350), 7 states have internal predecessors, (1350), 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) [2023-08-27 11:39:08,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:08,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 457 [2023-08-27 11:39:08,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:08,408 INFO L124 PetriNetUnfolderBase]: 1301/2324 cut-off events. [2023-08-27 11:39:08,409 INFO L125 PetriNetUnfolderBase]: For 10904/10904 co-relation queries the response was YES. [2023-08-27 11:39:08,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9187 conditions, 2324 events. 1301/2324 cut-off events. For 10904/10904 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13167 event pairs, 299 based on Foata normal form. 33/2355 useless extension candidates. Maximal degree in co-relation 9154. Up to 1270 conditions per place. [2023-08-27 11:39:08,425 INFO L140 encePairwiseOnDemand]: 444/457 looper letters, 115 selfloop transitions, 28 changer transitions 7/156 dead transitions. [2023-08-27 11:39:08,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 156 transitions, 1477 flow [2023-08-27 11:39:08,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:39:08,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:39:08,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2022 transitions. [2023-08-27 11:39:08,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44245076586433263 [2023-08-27 11:39:08,428 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2022 transitions. [2023-08-27 11:39:08,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2022 transitions. [2023-08-27 11:39:08,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:08,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2022 transitions. [2023-08-27 11:39:08,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 202.2) internal successors, (2022), 10 states have internal predecessors, (2022), 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) [2023-08-27 11:39:08,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 457.0) internal successors, (5027), 11 states have internal predecessors, (5027), 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) [2023-08-27 11:39:08,435 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 457.0) internal successors, (5027), 11 states have internal predecessors, (5027), 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) [2023-08-27 11:39:08,435 INFO L175 Difference]: Start difference. First operand has 123 places, 105 transitions, 1091 flow. Second operand 10 states and 2022 transitions. [2023-08-27 11:39:08,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 156 transitions, 1477 flow [2023-08-27 11:39:08,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 156 transitions, 1393 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-08-27 11:39:08,472 INFO L231 Difference]: Finished difference. Result has 125 places, 90 transitions, 874 flow [2023-08-27 11:39:08,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=874, PETRI_PLACES=125, PETRI_TRANSITIONS=90} [2023-08-27 11:39:08,472 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 32 predicate places. [2023-08-27 11:39:08,473 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 90 transitions, 874 flow [2023-08-27 11:39:08,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 192.85714285714286) internal successors, (1350), 7 states have internal predecessors, (1350), 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) [2023-08-27 11:39:08,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:08,473 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:08,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 11:39:08,473 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:08,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1043836051, now seen corresponding path program 2 times [2023-08-27 11:39:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:08,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135149849] [2023-08-27 11:39:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:08,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:08,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:08,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135149849] [2023-08-27 11:39:08,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135149849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:08,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:08,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:39:08,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329593336] [2023-08-27 11:39:08,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:08,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:08,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:08,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:39:08,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 457 [2023-08-27 11:39:08,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 90 transitions, 874 flow. Second operand has 7 states, 7 states have (on average 192.85714285714286) internal successors, (1350), 7 states have internal predecessors, (1350), 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) [2023-08-27 11:39:08,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:08,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 457 [2023-08-27 11:39:08,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:08,913 INFO L124 PetriNetUnfolderBase]: 1143/2031 cut-off events. [2023-08-27 11:39:08,913 INFO L125 PetriNetUnfolderBase]: For 8974/8974 co-relation queries the response was YES. [2023-08-27 11:39:08,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 2031 events. 1143/2031 cut-off events. For 8974/8974 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 11014 event pairs, 244 based on Foata normal form. 30/2059 useless extension candidates. Maximal degree in co-relation 7670. Up to 817 conditions per place. [2023-08-27 11:39:08,923 INFO L140 encePairwiseOnDemand]: 444/457 looper letters, 119 selfloop transitions, 34 changer transitions 9/168 dead transitions. [2023-08-27 11:39:08,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 168 transitions, 1347 flow [2023-08-27 11:39:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:39:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:39:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2809 transitions. [2023-08-27 11:39:08,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43904345107846204 [2023-08-27 11:39:08,926 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2809 transitions. [2023-08-27 11:39:08,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2809 transitions. [2023-08-27 11:39:08,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:08,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2809 transitions. [2023-08-27 11:39:08,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 200.64285714285714) internal successors, (2809), 14 states have internal predecessors, (2809), 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) [2023-08-27 11:39:08,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 457.0) internal successors, (6855), 15 states have internal predecessors, (6855), 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) [2023-08-27 11:39:08,934 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 457.0) internal successors, (6855), 15 states have internal predecessors, (6855), 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) [2023-08-27 11:39:08,934 INFO L175 Difference]: Start difference. First operand has 125 places, 90 transitions, 874 flow. Second operand 14 states and 2809 transitions. [2023-08-27 11:39:08,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 168 transitions, 1347 flow [2023-08-27 11:39:08,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 168 transitions, 1165 flow, removed 26 selfloop flow, removed 19 redundant places. [2023-08-27 11:39:08,960 INFO L231 Difference]: Finished difference. Result has 117 places, 78 transitions, 601 flow [2023-08-27 11:39:08,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=601, PETRI_PLACES=117, PETRI_TRANSITIONS=78} [2023-08-27 11:39:08,961 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 24 predicate places. [2023-08-27 11:39:08,961 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 78 transitions, 601 flow [2023-08-27 11:39:08,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 192.85714285714286) internal successors, (1350), 7 states have internal predecessors, (1350), 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) [2023-08-27 11:39:08,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:08,962 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:08,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 11:39:08,962 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:08,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:08,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1045088451, now seen corresponding path program 1 times [2023-08-27 11:39:08,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:08,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579213299] [2023-08-27 11:39:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:08,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:09,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:09,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579213299] [2023-08-27 11:39:09,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579213299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:09,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:09,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:39:09,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328721270] [2023-08-27 11:39:09,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:09,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:09,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:09,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:09,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:39:09,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 457 [2023-08-27 11:39:09,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 78 transitions, 601 flow. Second operand has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 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) [2023-08-27 11:39:09,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:09,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 457 [2023-08-27 11:39:09,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:09,322 INFO L124 PetriNetUnfolderBase]: 1122/2001 cut-off events. [2023-08-27 11:39:09,322 INFO L125 PetriNetUnfolderBase]: For 5167/5167 co-relation queries the response was YES. [2023-08-27 11:39:09,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7173 conditions, 2001 events. 1122/2001 cut-off events. For 5167/5167 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 11015 event pairs, 277 based on Foata normal form. 18/2017 useless extension candidates. Maximal degree in co-relation 7147. Up to 901 conditions per place. [2023-08-27 11:39:09,335 INFO L140 encePairwiseOnDemand]: 444/457 looper letters, 108 selfloop transitions, 31 changer transitions 10/155 dead transitions. [2023-08-27 11:39:09,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 155 transitions, 1209 flow [2023-08-27 11:39:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:39:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:39:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2035 transitions. [2023-08-27 11:39:09,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44529540481400437 [2023-08-27 11:39:09,339 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2035 transitions. [2023-08-27 11:39:09,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2035 transitions. [2023-08-27 11:39:09,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:09,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2035 transitions. [2023-08-27 11:39:09,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 203.5) internal successors, (2035), 10 states have internal predecessors, (2035), 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) [2023-08-27 11:39:09,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 457.0) internal successors, (5027), 11 states have internal predecessors, (5027), 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) [2023-08-27 11:39:09,345 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 457.0) internal successors, (5027), 11 states have internal predecessors, (5027), 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) [2023-08-27 11:39:09,345 INFO L175 Difference]: Start difference. First operand has 117 places, 78 transitions, 601 flow. Second operand 10 states and 2035 transitions. [2023-08-27 11:39:09,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 155 transitions, 1209 flow [2023-08-27 11:39:09,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 155 transitions, 1138 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-08-27 11:39:09,359 INFO L231 Difference]: Finished difference. Result has 114 places, 83 transitions, 679 flow [2023-08-27 11:39:09,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=679, PETRI_PLACES=114, PETRI_TRANSITIONS=83} [2023-08-27 11:39:09,360 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 21 predicate places. [2023-08-27 11:39:09,360 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 83 transitions, 679 flow [2023-08-27 11:39:09,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 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) [2023-08-27 11:39:09,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:09,360 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:09,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 11:39:09,360 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:09,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:09,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1045088507, now seen corresponding path program 1 times [2023-08-27 11:39:09,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:09,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392554027] [2023-08-27 11:39:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:09,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:09,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:09,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392554027] [2023-08-27 11:39:09,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392554027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:09,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:09,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:39:09,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344279493] [2023-08-27 11:39:09,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:09,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:09,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:09,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:09,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:39:09,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 457 [2023-08-27 11:39:09,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 83 transitions, 679 flow. Second operand has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 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) [2023-08-27 11:39:09,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:09,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 457 [2023-08-27 11:39:09,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:09,737 INFO L124 PetriNetUnfolderBase]: 1098/1968 cut-off events. [2023-08-27 11:39:09,737 INFO L125 PetriNetUnfolderBase]: For 5551/5551 co-relation queries the response was YES. [2023-08-27 11:39:09,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7150 conditions, 1968 events. 1098/1968 cut-off events. For 5551/5551 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 10853 event pairs, 277 based on Foata normal form. 18/1984 useless extension candidates. Maximal degree in co-relation 7123. Up to 901 conditions per place. [2023-08-27 11:39:09,745 INFO L140 encePairwiseOnDemand]: 445/457 looper letters, 102 selfloop transitions, 25 changer transitions 19/152 dead transitions. [2023-08-27 11:39:09,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 152 transitions, 1177 flow [2023-08-27 11:39:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:39:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:39:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2223 transitions. [2023-08-27 11:39:09,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.442212054903521 [2023-08-27 11:39:09,747 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2223 transitions. [2023-08-27 11:39:09,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2223 transitions. [2023-08-27 11:39:09,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:09,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2223 transitions. [2023-08-27 11:39:09,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 202.0909090909091) internal successors, (2223), 11 states have internal predecessors, (2223), 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) [2023-08-27 11:39:09,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 457.0) internal successors, (5484), 12 states have internal predecessors, (5484), 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) [2023-08-27 11:39:09,752 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 457.0) internal successors, (5484), 12 states have internal predecessors, (5484), 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) [2023-08-27 11:39:09,752 INFO L175 Difference]: Start difference. First operand has 114 places, 83 transitions, 679 flow. Second operand 11 states and 2223 transitions. [2023-08-27 11:39:09,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 152 transitions, 1177 flow [2023-08-27 11:39:09,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 152 transitions, 1147 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 11:39:09,766 INFO L231 Difference]: Finished difference. Result has 118 places, 77 transitions, 596 flow [2023-08-27 11:39:09,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=596, PETRI_PLACES=118, PETRI_TRANSITIONS=77} [2023-08-27 11:39:09,767 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 25 predicate places. [2023-08-27 11:39:09,767 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 77 transitions, 596 flow [2023-08-27 11:39:09,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 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) [2023-08-27 11:39:09,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:09,767 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:09,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 11:39:09,767 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:09,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash -97186025, now seen corresponding path program 1 times [2023-08-27 11:39:09,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:09,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805515534] [2023-08-27 11:39:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:09,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:09,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:09,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805515534] [2023-08-27 11:39:09,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805515534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:09,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:09,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:39:09,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181226427] [2023-08-27 11:39:09,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:09,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:09,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:09,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:09,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:39:09,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2023-08-27 11:39:09,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 77 transitions, 596 flow. Second operand has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:09,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:09,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2023-08-27 11:39:09,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:10,330 INFO L124 PetriNetUnfolderBase]: 1149/2055 cut-off events. [2023-08-27 11:39:10,331 INFO L125 PetriNetUnfolderBase]: For 6145/6145 co-relation queries the response was YES. [2023-08-27 11:39:10,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7493 conditions, 2055 events. 1149/2055 cut-off events. For 6145/6145 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 11326 event pairs, 205 based on Foata normal form. 18/2071 useless extension candidates. Maximal degree in co-relation 7465. Up to 462 conditions per place. [2023-08-27 11:39:10,341 INFO L140 encePairwiseOnDemand]: 445/457 looper letters, 127 selfloop transitions, 42 changer transitions 13/188 dead transitions. [2023-08-27 11:39:10,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 188 transitions, 1426 flow [2023-08-27 11:39:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:39:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:39:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3119 transitions. [2023-08-27 11:39:10,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265590809628009 [2023-08-27 11:39:10,345 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3119 transitions. [2023-08-27 11:39:10,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3119 transitions. [2023-08-27 11:39:10,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:10,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3119 transitions. [2023-08-27 11:39:10,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 194.9375) internal successors, (3119), 16 states have internal predecessors, (3119), 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) [2023-08-27 11:39:10,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 457.0) internal successors, (7769), 17 states have internal predecessors, (7769), 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) [2023-08-27 11:39:10,352 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 457.0) internal successors, (7769), 17 states have internal predecessors, (7769), 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) [2023-08-27 11:39:10,352 INFO L175 Difference]: Start difference. First operand has 118 places, 77 transitions, 596 flow. Second operand 16 states and 3119 transitions. [2023-08-27 11:39:10,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 188 transitions, 1426 flow [2023-08-27 11:39:10,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 188 transitions, 1341 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-08-27 11:39:10,365 INFO L231 Difference]: Finished difference. Result has 123 places, 84 transitions, 724 flow [2023-08-27 11:39:10,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=724, PETRI_PLACES=123, PETRI_TRANSITIONS=84} [2023-08-27 11:39:10,366 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 30 predicate places. [2023-08-27 11:39:10,366 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 84 transitions, 724 flow [2023-08-27 11:39:10,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:10,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:10,366 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:10,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 11:39:10,367 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:10,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:10,367 INFO L85 PathProgramCache]: Analyzing trace with hash 217397426, now seen corresponding path program 1 times [2023-08-27 11:39:10,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:10,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097276972] [2023-08-27 11:39:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:10,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:10,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:10,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097276972] [2023-08-27 11:39:10,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097276972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:10,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:10,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:39:10,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931847591] [2023-08-27 11:39:10,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:10,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:39:10,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:10,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:39:10,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:39:10,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 457 [2023-08-27 11:39:10,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 84 transitions, 724 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2023-08-27 11:39:10,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:10,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 457 [2023-08-27 11:39:10,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:10,689 INFO L124 PetriNetUnfolderBase]: 1476/2709 cut-off events. [2023-08-27 11:39:10,689 INFO L125 PetriNetUnfolderBase]: For 9662/9662 co-relation queries the response was YES. [2023-08-27 11:39:10,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10377 conditions, 2709 events. 1476/2709 cut-off events. For 9662/9662 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16224 event pairs, 515 based on Foata normal form. 111/2818 useless extension candidates. Maximal degree in co-relation 10349. Up to 1349 conditions per place. [2023-08-27 11:39:10,701 INFO L140 encePairwiseOnDemand]: 445/457 looper letters, 106 selfloop transitions, 23 changer transitions 0/138 dead transitions. [2023-08-27 11:39:10,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 138 transitions, 1493 flow [2023-08-27 11:39:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:39:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:39:10,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2023-08-27 11:39:10,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44930707512764406 [2023-08-27 11:39:10,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2023-08-27 11:39:10,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2023-08-27 11:39:10,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:10,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2023-08-27 11:39:10,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 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) [2023-08-27 11:39:10,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-27 11:39:10,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 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) [2023-08-27 11:39:10,705 INFO L175 Difference]: Start difference. First operand has 123 places, 84 transitions, 724 flow. Second operand 3 states and 616 transitions. [2023-08-27 11:39:10,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 138 transitions, 1493 flow [2023-08-27 11:39:10,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 138 transitions, 1406 flow, removed 14 selfloop flow, removed 9 redundant places. [2023-08-27 11:39:10,730 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 872 flow [2023-08-27 11:39:10,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=872, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2023-08-27 11:39:10,731 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 23 predicate places. [2023-08-27 11:39:10,731 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 872 flow [2023-08-27 11:39:10,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2023-08-27 11:39:10,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:10,732 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:10,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 11:39:10,732 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:10,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:10,732 INFO L85 PathProgramCache]: Analyzing trace with hash 267080996, now seen corresponding path program 2 times [2023-08-27 11:39:10,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:10,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670209386] [2023-08-27 11:39:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:10,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:10,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:10,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670209386] [2023-08-27 11:39:10,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670209386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:10,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:10,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:39:10,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391997923] [2023-08-27 11:39:10,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:10,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:10,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:10,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:10,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:39:10,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2023-08-27 11:39:10,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 872 flow. Second operand has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:10,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:10,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2023-08-27 11:39:10,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:11,307 INFO L124 PetriNetUnfolderBase]: 1426/2644 cut-off events. [2023-08-27 11:39:11,307 INFO L125 PetriNetUnfolderBase]: For 8394/8394 co-relation queries the response was YES. [2023-08-27 11:39:11,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10961 conditions, 2644 events. 1426/2644 cut-off events. For 8394/8394 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15941 event pairs, 219 based on Foata normal form. 30/2672 useless extension candidates. Maximal degree in co-relation 10934. Up to 684 conditions per place. [2023-08-27 11:39:11,325 INFO L140 encePairwiseOnDemand]: 445/457 looper letters, 118 selfloop transitions, 31 changer transitions 48/203 dead transitions. [2023-08-27 11:39:11,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 203 transitions, 1714 flow [2023-08-27 11:39:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:39:11,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:39:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3112 transitions. [2023-08-27 11:39:11,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42560175054704596 [2023-08-27 11:39:11,329 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3112 transitions. [2023-08-27 11:39:11,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3112 transitions. [2023-08-27 11:39:11,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:11,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3112 transitions. [2023-08-27 11:39:11,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 194.5) internal successors, (3112), 16 states have internal predecessors, (3112), 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) [2023-08-27 11:39:11,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 457.0) internal successors, (7769), 17 states have internal predecessors, (7769), 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) [2023-08-27 11:39:11,338 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 457.0) internal successors, (7769), 17 states have internal predecessors, (7769), 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) [2023-08-27 11:39:11,338 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 872 flow. Second operand 16 states and 3112 transitions. [2023-08-27 11:39:11,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 203 transitions, 1714 flow [2023-08-27 11:39:11,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 203 transitions, 1610 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 11:39:11,363 INFO L231 Difference]: Finished difference. Result has 126 places, 77 transitions, 638 flow [2023-08-27 11:39:11,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=638, PETRI_PLACES=126, PETRI_TRANSITIONS=77} [2023-08-27 11:39:11,365 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 33 predicate places. [2023-08-27 11:39:11,365 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 77 transitions, 638 flow [2023-08-27 11:39:11,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:11,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:11,366 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:11,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 11:39:11,366 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:11,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:11,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1670059492, now seen corresponding path program 1 times [2023-08-27 11:39:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:11,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601976267] [2023-08-27 11:39:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:11,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:11,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:11,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601976267] [2023-08-27 11:39:11,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601976267] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:11,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:11,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:39:11,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069546982] [2023-08-27 11:39:11,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:11,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:39:11,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2023-08-27 11:39:11,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 77 transitions, 638 flow. Second operand has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:11,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:11,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2023-08-27 11:39:11,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:11,805 INFO L124 PetriNetUnfolderBase]: 970/1825 cut-off events. [2023-08-27 11:39:11,805 INFO L125 PetriNetUnfolderBase]: For 6104/6104 co-relation queries the response was YES. [2023-08-27 11:39:11,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7321 conditions, 1825 events. 970/1825 cut-off events. For 6104/6104 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10054 event pairs, 233 based on Foata normal form. 15/1838 useless extension candidates. Maximal degree in co-relation 7298. Up to 829 conditions per place. [2023-08-27 11:39:11,813 INFO L140 encePairwiseOnDemand]: 446/457 looper letters, 112 selfloop transitions, 18 changer transitions 2/138 dead transitions. [2023-08-27 11:39:11,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 138 transitions, 1174 flow [2023-08-27 11:39:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:39:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:39:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1947 transitions. [2023-08-27 11:39:11,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4260393873085339 [2023-08-27 11:39:11,816 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1947 transitions. [2023-08-27 11:39:11,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1947 transitions. [2023-08-27 11:39:11,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:11,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1947 transitions. [2023-08-27 11:39:11,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 194.7) internal successors, (1947), 10 states have internal predecessors, (1947), 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) [2023-08-27 11:39:11,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 457.0) internal successors, (5027), 11 states have internal predecessors, (5027), 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) [2023-08-27 11:39:11,820 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 457.0) internal successors, (5027), 11 states have internal predecessors, (5027), 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) [2023-08-27 11:39:11,821 INFO L175 Difference]: Start difference. First operand has 126 places, 77 transitions, 638 flow. Second operand 10 states and 1947 transitions. [2023-08-27 11:39:11,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 138 transitions, 1174 flow [2023-08-27 11:39:11,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 138 transitions, 1058 flow, removed 3 selfloop flow, removed 19 redundant places. [2023-08-27 11:39:11,834 INFO L231 Difference]: Finished difference. Result has 110 places, 79 transitions, 591 flow [2023-08-27 11:39:11,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=591, PETRI_PLACES=110, PETRI_TRANSITIONS=79} [2023-08-27 11:39:11,834 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 17 predicate places. [2023-08-27 11:39:11,835 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 79 transitions, 591 flow [2023-08-27 11:39:11,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:11,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:11,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:11,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 11:39:11,835 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:11,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:11,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1839502499, now seen corresponding path program 1 times [2023-08-27 11:39:11,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:11,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872784168] [2023-08-27 11:39:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:11,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:11,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:11,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872784168] [2023-08-27 11:39:11,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872784168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:11,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:11,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:39:11,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129863908] [2023-08-27 11:39:11,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:11,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:39:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:11,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:39:11,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:39:11,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 457 [2023-08-27 11:39:11,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 79 transitions, 591 flow. Second operand has 7 states, 7 states have (on average 193.42857142857142) internal successors, (1354), 7 states have internal predecessors, (1354), 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) [2023-08-27 11:39:11,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:11,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 457 [2023-08-27 11:39:11,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:12,205 INFO L124 PetriNetUnfolderBase]: 1025/1931 cut-off events. [2023-08-27 11:39:12,206 INFO L125 PetriNetUnfolderBase]: For 6229/6229 co-relation queries the response was YES. [2023-08-27 11:39:12,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7557 conditions, 1931 events. 1025/1931 cut-off events. For 6229/6229 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10772 event pairs, 257 based on Foata normal form. 15/1944 useless extension candidates. Maximal degree in co-relation 7534. Up to 1011 conditions per place. [2023-08-27 11:39:12,218 INFO L140 encePairwiseOnDemand]: 448/457 looper letters, 110 selfloop transitions, 13 changer transitions 2/131 dead transitions. [2023-08-27 11:39:12,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 131 transitions, 1080 flow [2023-08-27 11:39:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:39:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:39:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1797 transitions. [2023-08-27 11:39:12,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43690736688548504 [2023-08-27 11:39:12,221 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1797 transitions. [2023-08-27 11:39:12,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1797 transitions. [2023-08-27 11:39:12,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:12,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1797 transitions. [2023-08-27 11:39:12,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 199.66666666666666) internal successors, (1797), 9 states have internal predecessors, (1797), 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) [2023-08-27 11:39:12,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 457.0) internal successors, (4570), 10 states have internal predecessors, (4570), 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) [2023-08-27 11:39:12,227 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 457.0) internal successors, (4570), 10 states have internal predecessors, (4570), 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) [2023-08-27 11:39:12,227 INFO L175 Difference]: Start difference. First operand has 110 places, 79 transitions, 591 flow. Second operand 9 states and 1797 transitions. [2023-08-27 11:39:12,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 131 transitions, 1080 flow [2023-08-27 11:39:12,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 131 transitions, 1058 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 11:39:12,244 INFO L231 Difference]: Finished difference. Result has 115 places, 81 transitions, 635 flow [2023-08-27 11:39:12,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=115, PETRI_TRANSITIONS=81} [2023-08-27 11:39:12,245 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 22 predicate places. [2023-08-27 11:39:12,246 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 81 transitions, 635 flow [2023-08-27 11:39:12,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.42857142857142) internal successors, (1354), 7 states have internal predecessors, (1354), 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) [2023-08-27 11:39:12,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:12,246 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:12,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 11:39:12,246 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:12,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash 465685199, now seen corresponding path program 2 times [2023-08-27 11:39:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211190424] [2023-08-27 11:39:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:12,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:12,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211190424] [2023-08-27 11:39:12,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211190424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:12,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:12,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:39:12,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423362365] [2023-08-27 11:39:12,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:12,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:12,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:12,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:12,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:39:12,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2023-08-27 11:39:12,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 81 transitions, 635 flow. Second operand has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:12,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:12,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2023-08-27 11:39:12,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:12,737 INFO L124 PetriNetUnfolderBase]: 1075/2014 cut-off events. [2023-08-27 11:39:12,738 INFO L125 PetriNetUnfolderBase]: For 7955/7955 co-relation queries the response was YES. [2023-08-27 11:39:12,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8096 conditions, 2014 events. 1075/2014 cut-off events. For 7955/7955 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 11400 event pairs, 204 based on Foata normal form. 15/2027 useless extension candidates. Maximal degree in co-relation 8070. Up to 559 conditions per place. [2023-08-27 11:39:12,748 INFO L140 encePairwiseOnDemand]: 446/457 looper letters, 133 selfloop transitions, 32 changer transitions 6/177 dead transitions. [2023-08-27 11:39:12,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 177 transitions, 1401 flow [2023-08-27 11:39:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:39:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:39:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3097 transitions. [2023-08-27 11:39:12,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4235503282275711 [2023-08-27 11:39:12,752 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3097 transitions. [2023-08-27 11:39:12,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3097 transitions. [2023-08-27 11:39:12,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:12,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3097 transitions. [2023-08-27 11:39:12,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 193.5625) internal successors, (3097), 16 states have internal predecessors, (3097), 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) [2023-08-27 11:39:12,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 457.0) internal successors, (7769), 17 states have internal predecessors, (7769), 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) [2023-08-27 11:39:12,761 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 457.0) internal successors, (7769), 17 states have internal predecessors, (7769), 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) [2023-08-27 11:39:12,761 INFO L175 Difference]: Start difference. First operand has 115 places, 81 transitions, 635 flow. Second operand 16 states and 3097 transitions. [2023-08-27 11:39:12,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 177 transitions, 1401 flow [2023-08-27 11:39:12,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 177 transitions, 1384 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 11:39:12,784 INFO L231 Difference]: Finished difference. Result has 128 places, 82 transitions, 717 flow [2023-08-27 11:39:12,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=717, PETRI_PLACES=128, PETRI_TRANSITIONS=82} [2023-08-27 11:39:12,785 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 35 predicate places. [2023-08-27 11:39:12,785 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 82 transitions, 717 flow [2023-08-27 11:39:12,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:12,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:12,785 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:12,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 11:39:12,785 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:12,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1082867852, now seen corresponding path program 2 times [2023-08-27 11:39:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:12,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762178429] [2023-08-27 11:39:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:12,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:12,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:12,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762178429] [2023-08-27 11:39:12,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762178429] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:12,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:12,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:39:12,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070752049] [2023-08-27 11:39:12,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:12,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:12,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:12,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:39:12,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2023-08-27 11:39:12,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 82 transitions, 717 flow. Second operand has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:12,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:12,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2023-08-27 11:39:12,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:13,357 INFO L124 PetriNetUnfolderBase]: 1061/2015 cut-off events. [2023-08-27 11:39:13,358 INFO L125 PetriNetUnfolderBase]: For 8560/8560 co-relation queries the response was YES. [2023-08-27 11:39:13,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8292 conditions, 2015 events. 1061/2015 cut-off events. For 8560/8560 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11519 event pairs, 241 based on Foata normal form. 15/2028 useless extension candidates. Maximal degree in co-relation 8264. Up to 949 conditions per place. [2023-08-27 11:39:13,369 INFO L140 encePairwiseOnDemand]: 445/457 looper letters, 114 selfloop transitions, 30 changer transitions 10/160 dead transitions. [2023-08-27 11:39:13,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 160 transitions, 1355 flow [2023-08-27 11:39:13,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:39:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:39:13,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2528 transitions. [2023-08-27 11:39:13,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255175896313752 [2023-08-27 11:39:13,372 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2528 transitions. [2023-08-27 11:39:13,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2528 transitions. [2023-08-27 11:39:13,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:13,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2528 transitions. [2023-08-27 11:39:13,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 194.46153846153845) internal successors, (2528), 13 states have internal predecessors, (2528), 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) [2023-08-27 11:39:13,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 457.0) internal successors, (6398), 14 states have internal predecessors, (6398), 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) [2023-08-27 11:39:13,379 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 457.0) internal successors, (6398), 14 states have internal predecessors, (6398), 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) [2023-08-27 11:39:13,379 INFO L175 Difference]: Start difference. First operand has 128 places, 82 transitions, 717 flow. Second operand 13 states and 2528 transitions. [2023-08-27 11:39:13,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 160 transitions, 1355 flow [2023-08-27 11:39:13,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 160 transitions, 1311 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-27 11:39:13,401 INFO L231 Difference]: Finished difference. Result has 129 places, 81 transitions, 712 flow [2023-08-27 11:39:13,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=712, PETRI_PLACES=129, PETRI_TRANSITIONS=81} [2023-08-27 11:39:13,401 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 36 predicate places. [2023-08-27 11:39:13,401 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 81 transitions, 712 flow [2023-08-27 11:39:13,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:13,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:13,402 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:13,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 11:39:13,402 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:13,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:13,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1083021303, now seen corresponding path program 3 times [2023-08-27 11:39:13,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:13,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785841832] [2023-08-27 11:39:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:13,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:13,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:13,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785841832] [2023-08-27 11:39:13,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785841832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:13,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:13,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:39:13,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329958888] [2023-08-27 11:39:13,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:13,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:13,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:13,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:13,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:39:13,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2023-08-27 11:39:13,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 81 transitions, 712 flow. Second operand has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:13,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:13,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2023-08-27 11:39:13,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:13,817 INFO L124 PetriNetUnfolderBase]: 1021/1945 cut-off events. [2023-08-27 11:39:13,817 INFO L125 PetriNetUnfolderBase]: For 7790/7790 co-relation queries the response was YES. [2023-08-27 11:39:13,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8036 conditions, 1945 events. 1021/1945 cut-off events. For 7790/7790 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 11120 event pairs, 180 based on Foata normal form. 15/1958 useless extension candidates. Maximal degree in co-relation 8007. Up to 493 conditions per place. [2023-08-27 11:39:13,826 INFO L140 encePairwiseOnDemand]: 445/457 looper letters, 121 selfloop transitions, 35 changer transitions 9/171 dead transitions. [2023-08-27 11:39:13,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 171 transitions, 1422 flow [2023-08-27 11:39:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:39:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:39:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3092 transitions. [2023-08-27 11:39:13,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42286652078774617 [2023-08-27 11:39:13,830 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3092 transitions. [2023-08-27 11:39:13,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3092 transitions. [2023-08-27 11:39:13,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:13,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3092 transitions. [2023-08-27 11:39:13,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 193.25) internal successors, (3092), 16 states have internal predecessors, (3092), 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) [2023-08-27 11:39:13,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 457.0) internal successors, (7769), 17 states have internal predecessors, (7769), 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) [2023-08-27 11:39:13,839 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 457.0) internal successors, (7769), 17 states have internal predecessors, (7769), 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) [2023-08-27 11:39:13,839 INFO L175 Difference]: Start difference. First operand has 129 places, 81 transitions, 712 flow. Second operand 16 states and 3092 transitions. [2023-08-27 11:39:13,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 171 transitions, 1422 flow [2023-08-27 11:39:13,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 171 transitions, 1340 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-08-27 11:39:13,860 INFO L231 Difference]: Finished difference. Result has 130 places, 78 transitions, 668 flow [2023-08-27 11:39:13,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=668, PETRI_PLACES=130, PETRI_TRANSITIONS=78} [2023-08-27 11:39:13,861 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 37 predicate places. [2023-08-27 11:39:13,861 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 78 transitions, 668 flow [2023-08-27 11:39:13,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:13,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:13,861 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:13,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 11:39:13,861 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:13,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:13,862 INFO L85 PathProgramCache]: Analyzing trace with hash 465685200, now seen corresponding path program 3 times [2023-08-27 11:39:13,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:13,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675634815] [2023-08-27 11:39:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:13,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:13,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:13,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675634815] [2023-08-27 11:39:13,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675634815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:13,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:13,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:39:13,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929533185] [2023-08-27 11:39:13,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:13,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:13,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:13,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:13,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:39:13,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2023-08-27 11:39:13,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 78 transitions, 668 flow. Second operand has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:13,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:13,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2023-08-27 11:39:13,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:14,345 INFO L124 PetriNetUnfolderBase]: 913/1756 cut-off events. [2023-08-27 11:39:14,345 INFO L125 PetriNetUnfolderBase]: For 5807/5807 co-relation queries the response was YES. [2023-08-27 11:39:14,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7130 conditions, 1756 events. 913/1756 cut-off events. For 5807/5807 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9852 event pairs, 165 based on Foata normal form. 30/1784 useless extension candidates. Maximal degree in co-relation 7104. Up to 498 conditions per place. [2023-08-27 11:39:14,355 INFO L140 encePairwiseOnDemand]: 445/457 looper letters, 95 selfloop transitions, 21 changer transitions 42/164 dead transitions. [2023-08-27 11:39:14,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 164 transitions, 1317 flow [2023-08-27 11:39:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:39:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:39:14,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2716 transitions. [2023-08-27 11:39:14,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424507658643326 [2023-08-27 11:39:14,359 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2716 transitions. [2023-08-27 11:39:14,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2716 transitions. [2023-08-27 11:39:14,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:14,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2716 transitions. [2023-08-27 11:39:14,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 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) [2023-08-27 11:39:14,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 457.0) internal successors, (6855), 15 states have internal predecessors, (6855), 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) [2023-08-27 11:39:14,366 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 457.0) internal successors, (6855), 15 states have internal predecessors, (6855), 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) [2023-08-27 11:39:14,366 INFO L175 Difference]: Start difference. First operand has 130 places, 78 transitions, 668 flow. Second operand 14 states and 2716 transitions. [2023-08-27 11:39:14,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 164 transitions, 1317 flow [2023-08-27 11:39:14,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 164 transitions, 1224 flow, removed 1 selfloop flow, removed 18 redundant places. [2023-08-27 11:39:14,381 INFO L231 Difference]: Finished difference. Result has 121 places, 62 transitions, 447 flow [2023-08-27 11:39:14,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=447, PETRI_PLACES=121, PETRI_TRANSITIONS=62} [2023-08-27 11:39:14,381 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 28 predicate places. [2023-08-27 11:39:14,382 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 62 transitions, 447 flow [2023-08-27 11:39:14,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:14,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:14,382 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:14,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-27 11:39:14,382 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:14,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:14,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1670059491, now seen corresponding path program 4 times [2023-08-27 11:39:14,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:14,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931162398] [2023-08-27 11:39:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:14,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:14,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:14,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931162398] [2023-08-27 11:39:14,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931162398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:14,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:14,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:39:14,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779508928] [2023-08-27 11:39:14,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:14,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:14,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:14,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:14,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:39:14,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2023-08-27 11:39:14,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 62 transitions, 447 flow. Second operand has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:14,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:14,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2023-08-27 11:39:14,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:14,724 INFO L124 PetriNetUnfolderBase]: 606/1185 cut-off events. [2023-08-27 11:39:14,724 INFO L125 PetriNetUnfolderBase]: For 3213/3213 co-relation queries the response was YES. [2023-08-27 11:39:14,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 1185 events. 606/1185 cut-off events. For 3213/3213 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6037 event pairs, 147 based on Foata normal form. 15/1198 useless extension candidates. Maximal degree in co-relation 4635. Up to 256 conditions per place. [2023-08-27 11:39:14,731 INFO L140 encePairwiseOnDemand]: 447/457 looper letters, 63 selfloop transitions, 13 changer transitions 43/125 dead transitions. [2023-08-27 11:39:14,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 125 transitions, 945 flow [2023-08-27 11:39:14,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:39:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:39:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2317 transitions. [2023-08-27 11:39:14,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225018234865062 [2023-08-27 11:39:14,734 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2317 transitions. [2023-08-27 11:39:14,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2317 transitions. [2023-08-27 11:39:14,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:14,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2317 transitions. [2023-08-27 11:39:14,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 193.08333333333334) internal successors, (2317), 12 states have internal predecessors, (2317), 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) [2023-08-27 11:39:14,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 457.0) internal successors, (5941), 13 states have internal predecessors, (5941), 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) [2023-08-27 11:39:14,741 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 457.0) internal successors, (5941), 13 states have internal predecessors, (5941), 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) [2023-08-27 11:39:14,741 INFO L175 Difference]: Start difference. First operand has 121 places, 62 transitions, 447 flow. Second operand 12 states and 2317 transitions. [2023-08-27 11:39:14,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 125 transitions, 945 flow [2023-08-27 11:39:14,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 816 flow, removed 2 selfloop flow, removed 28 redundant places. [2023-08-27 11:39:14,749 INFO L231 Difference]: Finished difference. Result has 91 places, 49 transitions, 274 flow [2023-08-27 11:39:14,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=274, PETRI_PLACES=91, PETRI_TRANSITIONS=49} [2023-08-27 11:39:14,750 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -2 predicate places. [2023-08-27 11:39:14,750 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 49 transitions, 274 flow [2023-08-27 11:39:14,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:14,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:14,751 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:14,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-27 11:39:14,751 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:14,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:14,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1090082246, now seen corresponding path program 3 times [2023-08-27 11:39:14,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:14,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478637063] [2023-08-27 11:39:14,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:14,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:14,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:14,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478637063] [2023-08-27 11:39:14,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478637063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:14,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:14,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:39:14,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788403572] [2023-08-27 11:39:14,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:14,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:14,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:14,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:14,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:39:14,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2023-08-27 11:39:14,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 49 transitions, 274 flow. Second operand has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:14,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:14,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2023-08-27 11:39:14,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:15,005 INFO L124 PetriNetUnfolderBase]: 362/713 cut-off events. [2023-08-27 11:39:15,006 INFO L125 PetriNetUnfolderBase]: For 1327/1327 co-relation queries the response was YES. [2023-08-27 11:39:15,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2440 conditions, 713 events. 362/713 cut-off events. For 1327/1327 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3100 event pairs, 135 based on Foata normal form. 15/726 useless extension candidates. Maximal degree in co-relation 2422. Up to 251 conditions per place. [2023-08-27 11:39:15,008 INFO L140 encePairwiseOnDemand]: 448/457 looper letters, 62 selfloop transitions, 19 changer transitions 0/87 dead transitions. [2023-08-27 11:39:15,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 596 flow [2023-08-27 11:39:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:39:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:39:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2290 transitions. [2023-08-27 11:39:15,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175784099197666 [2023-08-27 11:39:15,012 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2290 transitions. [2023-08-27 11:39:15,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2290 transitions. [2023-08-27 11:39:15,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:15,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2290 transitions. [2023-08-27 11:39:15,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 190.83333333333334) internal successors, (2290), 12 states have internal predecessors, (2290), 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) [2023-08-27 11:39:15,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 457.0) internal successors, (5941), 13 states have internal predecessors, (5941), 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) [2023-08-27 11:39:15,019 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 457.0) internal successors, (5941), 13 states have internal predecessors, (5941), 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) [2023-08-27 11:39:15,019 INFO L175 Difference]: Start difference. First operand has 91 places, 49 transitions, 274 flow. Second operand 12 states and 2290 transitions. [2023-08-27 11:39:15,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 596 flow [2023-08-27 11:39:15,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 511 flow, removed 8 selfloop flow, removed 16 redundant places. [2023-08-27 11:39:15,023 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 233 flow [2023-08-27 11:39:15,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=233, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-08-27 11:39:15,023 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -23 predicate places. [2023-08-27 11:39:15,023 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 233 flow [2023-08-27 11:39:15,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:15,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:15,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:15,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-27 11:39:15,024 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:39:15,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:15,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1090082327, now seen corresponding path program 2 times [2023-08-27 11:39:15,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:15,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45825757] [2023-08-27 11:39:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:15,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:39:15,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:15,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45825757] [2023-08-27 11:39:15,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45825757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:15,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:15,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:39:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314426614] [2023-08-27 11:39:15,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:15,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:39:15,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:15,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:39:15,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:39:15,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2023-08-27 11:39:15,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 233 flow. Second operand has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:15,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:15,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2023-08-27 11:39:15,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:15,273 INFO L124 PetriNetUnfolderBase]: 343/679 cut-off events. [2023-08-27 11:39:15,273 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2023-08-27 11:39:15,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080 conditions, 679 events. 343/679 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2965 event pairs, 129 based on Foata normal form. 15/692 useless extension candidates. Maximal degree in co-relation 2071. Up to 251 conditions per place. [2023-08-27 11:39:15,275 INFO L140 encePairwiseOnDemand]: 448/457 looper letters, 0 selfloop transitions, 0 changer transitions 86/86 dead transitions. [2023-08-27 11:39:15,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 539 flow [2023-08-27 11:39:15,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:39:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:39:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2289 transitions. [2023-08-27 11:39:15,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41739606126914663 [2023-08-27 11:39:15,276 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2289 transitions. [2023-08-27 11:39:15,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2289 transitions. [2023-08-27 11:39:15,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:15,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2289 transitions. [2023-08-27 11:39:15,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 190.75) internal successors, (2289), 12 states have internal predecessors, (2289), 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) [2023-08-27 11:39:15,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 457.0) internal successors, (5941), 13 states have internal predecessors, (5941), 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) [2023-08-27 11:39:15,283 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 457.0) internal successors, (5941), 13 states have internal predecessors, (5941), 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) [2023-08-27 11:39:15,283 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 233 flow. Second operand 12 states and 2289 transitions. [2023-08-27 11:39:15,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 539 flow [2023-08-27 11:39:15,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 497 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-27 11:39:15,286 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-08-27 11:39:15,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-08-27 11:39:15,286 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -29 predicate places. [2023-08-27 11:39:15,286 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-08-27 11:39:15,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2023-08-27 11:39:15,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 29 remaining) [2023-08-27 11:39:15,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-08-27 11:39:15,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-08-27 11:39:15,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-08-27 11:39:15,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-08-27 11:39:15,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-08-27 11:39:15,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-08-27 11:39:15,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-08-27 11:39:15,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (13 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-08-27 11:39:15,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-08-27 11:39:15,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-08-27 11:39:15,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-08-27 11:39:15,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-08-27 11:39:15,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-08-27 11:39:15,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-08-27 11:39:15,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-08-27 11:39:15,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-08-27 11:39:15,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-08-27 11:39:15,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 11:39:15,289 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:39:15,290 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:39:15,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 255 transitions, 528 flow [2023-08-27 11:39:15,330 INFO L124 PetriNetUnfolderBase]: 48/378 cut-off events. [2023-08-27 11:39:15,330 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:39:15,333 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. [2023-08-27 11:39:15,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 255 transitions, 528 flow [2023-08-27 11:39:15,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 255 transitions, 528 flow [2023-08-27 11:39:15,336 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:39:15,336 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 255 transitions, 528 flow [2023-08-27 11:39:15,336 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 255 transitions, 528 flow [2023-08-27 11:39:15,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 255 transitions, 528 flow [2023-08-27 11:39:15,369 INFO L124 PetriNetUnfolderBase]: 48/378 cut-off events. [2023-08-27 11:39:15,370 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:39:15,373 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. [2023-08-27 11:39:15,383 INFO L119 LiptonReduction]: Number of co-enabled transitions 31668 [2023-08-27 11:39:18,782 INFO L134 LiptonReduction]: Checked pairs total: 95778 [2023-08-27 11:39:18,782 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-27 11:39:18,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:39:18,784 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;@6884255c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:39:18,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:39:18,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:39:18,788 INFO L124 PetriNetUnfolderBase]: 9/71 cut-off events. [2023-08-27 11:39:18,788 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:39:18,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:18,788 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 11:39:18,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:39:18,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:18,788 INFO L85 PathProgramCache]: Analyzing trace with hash -670805715, now seen corresponding path program 1 times [2023-08-27 11:39:18,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:18,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114616958] [2023-08-27 11:39:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:18,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:39:18,796 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:39:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:39:18,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:39:18,806 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:39:18,806 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:39:18,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-27 11:39:18,807 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:39:18,807 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:39:18,807 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:39:18,807 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 11:39:18,838 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 11:39:18,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 335 transitions, 700 flow [2023-08-27 11:39:18,913 INFO L124 PetriNetUnfolderBase]: 75/579 cut-off events. [2023-08-27 11:39:18,913 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:39:18,922 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. [2023-08-27 11:39:18,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 335 transitions, 700 flow [2023-08-27 11:39:18,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 335 transitions, 700 flow [2023-08-27 11:39:18,931 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:39:18,931 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 335 transitions, 700 flow [2023-08-27 11:39:18,931 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 335 transitions, 700 flow [2023-08-27 11:39:18,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 335 transitions, 700 flow [2023-08-27 11:39:19,000 INFO L124 PetriNetUnfolderBase]: 75/579 cut-off events. [2023-08-27 11:39:19,000 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:39:19,009 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. [2023-08-27 11:39:19,030 INFO L119 LiptonReduction]: Number of co-enabled transitions 66456 [2023-08-27 11:39:22,751 INFO L134 LiptonReduction]: Checked pairs total: 201332 [2023-08-27 11:39:22,752 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-08-27 11:39:22,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:39:22,753 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;@6884255c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:39:22,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-27 11:39:22,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:39:22,754 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 11:39:22,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:39:22,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:39:22,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:39:22,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 11:39:22,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:39:22,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2142897492, now seen corresponding path program 1 times [2023-08-27 11:39:22,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:39:22,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799535482] [2023-08-27 11:39:22,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:39:22,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:39:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:39:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:39:22,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:39:22,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799535482] [2023-08-27 11:39:22,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799535482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:39:22,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:39:22,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:39:22,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897791220] [2023-08-27 11:39:22,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:39:22,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:39:22,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:39:22,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:39:22,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:39:22,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 588 [2023-08-27 11:39:22,786 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) [2023-08-27 11:39:22,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:39:22,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 588 [2023-08-27 11:39:22,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:41:20,380 INFO L124 PetriNetUnfolderBase]: 1242517/1694409 cut-off events. [2023-08-27 11:41:20,380 INFO L125 PetriNetUnfolderBase]: For 11053/11053 co-relation queries the response was YES. [2023-08-27 11:41:24,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3376359 conditions, 1694409 events. 1242517/1694409 cut-off events. For 11053/11053 co-relation queries the response was YES. Maximal size of possible extension queue 37943. Compared 14422458 event pairs, 786202 based on Foata normal form. 127220/1260422 useless extension candidates. Maximal degree in co-relation 83397. Up to 1674874 conditions per place. [2023-08-27 11:41:32,237 INFO L140 encePairwiseOnDemand]: 543/588 looper letters, 145 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2023-08-27 11:41:32,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 161 transitions, 646 flow [2023-08-27 11:41:32,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:41:32,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:41:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1036 transitions. [2023-08-27 11:41:32,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2023-08-27 11:41:32,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1036 transitions. [2023-08-27 11:41:32,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1036 transitions. [2023-08-27 11:41:32,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:41:32,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1036 transitions. [2023-08-27 11:41:32,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.3333333333333) internal successors, (1036), 3 states have internal predecessors, (1036), 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) [2023-08-27 11:41:32,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-08-27 11:41:32,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 588.0) internal successors, (2352), 4 states have internal predecessors, (2352), 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) [2023-08-27 11:41:32,266 INFO L175 Difference]: Start difference. First operand has 130 places, 169 transitions, 368 flow. Second operand 3 states and 1036 transitions. [2023-08-27 11:41:32,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 161 transitions, 646 flow [2023-08-27 11:41:32,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 161 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:41:32,278 INFO L231 Difference]: Finished difference. Result has 132 places, 129 transitions, 302 flow [2023-08-27 11:41:32,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=588, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=132, PETRI_TRANSITIONS=129} [2023-08-27 11:41:32,282 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 2 predicate places. [2023-08-27 11:41:32,282 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 129 transitions, 302 flow [2023-08-27 11:41:32,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-08-27 11:41:32,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:41:32,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:41:32,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 11:41:32,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 11:41:32,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:41:32,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2086845621, now seen corresponding path program 1 times [2023-08-27 11:41:32,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:41:32,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48360819] [2023-08-27 11:41:32,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:32,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:41:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:41:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:41:32,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:41:32,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48360819] [2023-08-27 11:41:32,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48360819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:41:32,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:41:32,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:41:32,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050943778] [2023-08-27 11:41:32,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:41:32,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:41:32,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:41:32,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:41:32,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:41:32,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 588 [2023-08-27 11:41:32,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 129 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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) [2023-08-27 11:41:32,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:41:32,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 588 [2023-08-27 11:41:32,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand