/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_41-trylock_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:41:46,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:41:46,657 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 11:41:46,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:41:46,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:41:46,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:41:46,695 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:41:46,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:41:46,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:41:46,701 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:41:46,701 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:41:46,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:41:46,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:41:46,703 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:41:46,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:41:46,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:41:46,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:41:46,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:41:46,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:41:46,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:41:46,704 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:41:46,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:41:46,705 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:41:46,706 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:41:46,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:41:46,706 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:41:46,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:41:46,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:41:46,707 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:41:46,707 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:41:46,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:41:46,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:41:46,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:41:46,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:41:46,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:41:46,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:41:46,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:41:47,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:41:47,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:41:47,011 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:41:47,012 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:41:47,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-08-27 11:41:48,311 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:41:48,563 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:41:48,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-08-27 11:41:48,578 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f46e5293/c35e294b0b3e4497918c78bc8cb2c6ce/FLAGdb80676be [2023-08-27 11:41:48,596 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f46e5293/c35e294b0b3e4497918c78bc8cb2c6ce [2023-08-27 11:41:48,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:41:48,599 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:41:48,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:41:48,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:41:48,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:41:48,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:41:48" (1/1) ... [2023-08-27 11:41:48,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69aa2266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:48, skipping insertion in model container [2023-08-27 11:41:48,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:41:48" (1/1) ... [2023-08-27 11:41:48,653 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:41:48,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:41:48,934 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:41:48,965 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:41:48,966 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:41:48,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:41:49,035 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:41:49,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49 WrapperNode [2023-08-27 11:41:49,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:41:49,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:41:49,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:41:49,037 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:41:49,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (1/1) ... [2023-08-27 11:41:49,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (1/1) ... [2023-08-27 11:41:49,089 INFO L138 Inliner]: procedures = 171, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2023-08-27 11:41:49,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:41:49,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:41:49,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:41:49,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:41:49,099 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (1/1) ... [2023-08-27 11:41:49,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (1/1) ... [2023-08-27 11:41:49,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (1/1) ... [2023-08-27 11:41:49,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (1/1) ... [2023-08-27 11:41:49,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (1/1) ... [2023-08-27 11:41:49,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (1/1) ... [2023-08-27 11:41:49,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (1/1) ... [2023-08-27 11:41:49,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (1/1) ... [2023-08-27 11:41:49,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:41:49,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:41:49,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:41:49,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:41:49,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (1/1) ... [2023-08-27 11:41:49,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:41:49,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:41:49,161 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 11:41:49,171 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 11:41:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:41:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:41:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:41:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:41:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:41:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:41:49,200 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:41:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:41:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-27 11:41:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:41:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:41:49,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:41:49,202 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 11:41:49,333 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:41:49,334 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:41:49,483 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:41:49,489 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:41:49,490 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-27 11:41:49,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:41:49 BoogieIcfgContainer [2023-08-27 11:41:49,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:41:49,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:41:49,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:41:49,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:41:49,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:41:48" (1/3) ... [2023-08-27 11:41:49,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c67d4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:41:49, skipping insertion in model container [2023-08-27 11:41:49,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:41:49" (2/3) ... [2023-08-27 11:41:49,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c67d4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:41:49, skipping insertion in model container [2023-08-27 11:41:49,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:41:49" (3/3) ... [2023-08-27 11:41:49,499 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2023-08-27 11:41:49,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:41:49,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 11:41:49,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:41:49,569 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:41:49,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 125 transitions, 258 flow [2023-08-27 11:41:49,656 INFO L124 PetriNetUnfolderBase]: 23/168 cut-off events. [2023-08-27 11:41:49,656 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:41:49,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 168 events. 23/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 432 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 88. Up to 6 conditions per place. [2023-08-27 11:41:49,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 125 transitions, 258 flow [2023-08-27 11:41:49,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 122 transitions, 252 flow [2023-08-27 11:41:49,669 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:41:49,677 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 122 transitions, 252 flow [2023-08-27 11:41:49,679 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 122 transitions, 252 flow [2023-08-27 11:41:49,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 122 transitions, 252 flow [2023-08-27 11:41:49,714 INFO L124 PetriNetUnfolderBase]: 22/165 cut-off events. [2023-08-27 11:41:49,714 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:41:49,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 165 events. 22/165 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 431 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 88. Up to 6 conditions per place. [2023-08-27 11:41:49,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 3816 [2023-08-27 11:41:52,235 INFO L134 LiptonReduction]: Checked pairs total: 5619 [2023-08-27 11:41:52,236 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-27 11:41:52,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:41:52,255 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;@4a157085, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:41:52,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-27 11:41:52,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:41:52,258 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-08-27 11:41:52,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:41:52,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:41:52,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:41:52,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:41:52,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:41:52,263 INFO L85 PathProgramCache]: Analyzing trace with hash 15012539, now seen corresponding path program 1 times [2023-08-27 11:41:52,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:41:52,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989270569] [2023-08-27 11:41:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:52,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:41:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:41:52,519 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 11:41:52,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:41:52,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989270569] [2023-08-27 11:41:52,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989270569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:41:52,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:41:52,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:41:52,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071335398] [2023-08-27 11:41:52,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:41:52,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:41:52,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:41:52,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:41:52,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:41:52,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 231 [2023-08-27 11:41:52,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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 11:41:52,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:41:52,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 231 [2023-08-27 11:41:52,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:41:52,650 INFO L124 PetriNetUnfolderBase]: 145/309 cut-off events. [2023-08-27 11:41:52,651 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:41:52,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 309 events. 145/309 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1253 event pairs, 110 based on Foata normal form. 25/233 useless extension candidates. Maximal degree in co-relation 601. Up to 292 conditions per place. [2023-08-27 11:41:52,654 INFO L140 encePairwiseOnDemand]: 215/231 looper letters, 40 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-27 11:41:52,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 180 flow [2023-08-27 11:41:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:41:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:41:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-08-27 11:41:52,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266955266955267 [2023-08-27 11:41:52,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-08-27 11:41:52,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-08-27 11:41:52,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:41:52,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-08-27 11:41:52,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 11:41:52,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 11:41:52,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 11:41:52,679 INFO L175 Difference]: Start difference. First operand has 37 places, 45 transitions, 98 flow. Second operand 3 states and 365 transitions. [2023-08-27 11:41:52,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 180 flow [2023-08-27 11:41:52,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:41:52,684 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 78 flow [2023-08-27 11:41:52,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-27 11:41:52,688 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-08-27 11:41:52,688 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 78 flow [2023-08-27 11:41:52,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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 11:41:52,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:41:52,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:41:52,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:41:52,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:41:52,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:41:52,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1542143011, now seen corresponding path program 1 times [2023-08-27 11:41:52,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:41:52,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081088308] [2023-08-27 11:41:52,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:52,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:41:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:41:52,767 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 11:41:52,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:41:52,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081088308] [2023-08-27 11:41:52,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081088308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:41:52,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:41:52,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:41:52,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52547286] [2023-08-27 11:41:52,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:41:52,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:41:52,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:41:52,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:41:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:41:52,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 231 [2023-08-27 11:41:52,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 11:41:52,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:41:52,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 231 [2023-08-27 11:41:52,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:41:52,837 INFO L124 PetriNetUnfolderBase]: 115/250 cut-off events. [2023-08-27 11:41:52,838 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-27 11:41:52,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 250 events. 115/250 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 898 event pairs, 32 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 516. Up to 194 conditions per place. [2023-08-27 11:41:52,840 INFO L140 encePairwiseOnDemand]: 225/231 looper letters, 35 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-27 11:41:52,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 173 flow [2023-08-27 11:41:52,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:41:52,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:41:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2023-08-27 11:41:52,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2023-08-27 11:41:52,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2023-08-27 11:41:52,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2023-08-27 11:41:52,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:41:52,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2023-08-27 11:41:52,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 11:41:52,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 11:41:52,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 11:41:52,846 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 78 flow. Second operand 3 states and 350 transitions. [2023-08-27 11:41:52,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 173 flow [2023-08-27 11:41:52,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:41:52,848 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 80 flow [2023-08-27 11:41:52,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=3, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-27 11:41:52,849 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-08-27 11:41:52,849 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 80 flow [2023-08-27 11:41:52,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 11:41:52,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:41:52,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:41:52,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:41:52,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:41:52,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:41:52,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1282310249, now seen corresponding path program 1 times [2023-08-27 11:41:52,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:41:52,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048936869] [2023-08-27 11:41:52,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:52,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:41:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:41:52,921 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 11:41:52,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:41:52,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048936869] [2023-08-27 11:41:52,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048936869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:41:52,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:41:52,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:41:52,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613549006] [2023-08-27 11:41:52,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:41:52,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:41:52,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:41:52,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:41:52,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:41:52,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 231 [2023-08-27 11:41:52,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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 11:41:52,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:41:52,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 231 [2023-08-27 11:41:52,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:41:53,019 INFO L124 PetriNetUnfolderBase]: 103/226 cut-off events. [2023-08-27 11:41:53,019 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 11:41:53,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 226 events. 103/226 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 766 event pairs, 15 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 489. Up to 94 conditions per place. [2023-08-27 11:41:53,021 INFO L140 encePairwiseOnDemand]: 226/231 looper letters, 52 selfloop transitions, 4 changer transitions 2/60 dead transitions. [2023-08-27 11:41:53,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 60 transitions, 271 flow [2023-08-27 11:41:53,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:41:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:41:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 549 transitions. [2023-08-27 11:41:53,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753246753246753 [2023-08-27 11:41:53,024 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 549 transitions. [2023-08-27 11:41:53,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 549 transitions. [2023-08-27 11:41:53,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:41:53,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 549 transitions. [2023-08-27 11:41:53,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 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 11:41:53,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 11:41:53,030 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 11:41:53,030 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 80 flow. Second operand 5 states and 549 transitions. [2023-08-27 11:41:53,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 60 transitions, 271 flow [2023-08-27 11:41:53,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 60 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:41:53,032 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 82 flow [2023-08-27 11:41:53,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-27 11:41:53,033 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-08-27 11:41:53,033 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 82 flow [2023-08-27 11:41:53,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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 11:41:53,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:41:53,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:41:53,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:41:53,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:41:53,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:41:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1282310250, now seen corresponding path program 1 times [2023-08-27 11:41:53,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:41:53,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206914332] [2023-08-27 11:41:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:53,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:41:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:41:53,091 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 11:41:53,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:41:53,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206914332] [2023-08-27 11:41:53,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206914332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:41:53,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:41:53,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:41:53,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041534937] [2023-08-27 11:41:53,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:41:53,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:41:53,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:41:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:41:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:41:53,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 231 [2023-08-27 11:41:53,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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 11:41:53,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:41:53,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 231 [2023-08-27 11:41:53,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:41:53,190 INFO L124 PetriNetUnfolderBase]: 91/202 cut-off events. [2023-08-27 11:41:53,190 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-27 11:41:53,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 202 events. 91/202 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 650 event pairs, 13 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 459. Up to 76 conditions per place. [2023-08-27 11:41:53,192 INFO L140 encePairwiseOnDemand]: 226/231 looper letters, 48 selfloop transitions, 4 changer transitions 6/59 dead transitions. [2023-08-27 11:41:53,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 59 transitions, 271 flow [2023-08-27 11:41:53,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:41:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:41:53,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2023-08-27 11:41:53,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47445887445887447 [2023-08-27 11:41:53,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2023-08-27 11:41:53,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2023-08-27 11:41:53,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:41:53,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2023-08-27 11:41:53,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 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 11:41:53,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 11:41:53,198 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 11:41:53,199 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 82 flow. Second operand 5 states and 548 transitions. [2023-08-27 11:41:53,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 59 transitions, 271 flow [2023-08-27 11:41:53,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 59 transitions, 263 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:41:53,201 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 72 flow [2023-08-27 11:41:53,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-08-27 11:41:53,202 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-08-27 11:41:53,202 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 72 flow [2023-08-27 11:41:53,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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 11:41:53,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:41:53,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:41:53,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:41:53,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:41:53,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:41:53,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1844256241, now seen corresponding path program 1 times [2023-08-27 11:41:53,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:41:53,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471997820] [2023-08-27 11:41:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:53,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:41:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:41:53,248 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 11:41:53,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:41:53,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471997820] [2023-08-27 11:41:53,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471997820] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:41:53,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071029677] [2023-08-27 11:41:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:53,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:41:53,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:41:53,252 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 11:41:53,284 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 11:41:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:41:53,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:41:53,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:41:53,390 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 11:41:53,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:41:53,417 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 11:41:53,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071029677] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:41:53,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:41:53,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:41:53,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96650183] [2023-08-27 11:41:53,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:41:53,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:41:53,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:41:53,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:41:53,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:41:53,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 231 [2023-08-27 11:41:53,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 states have internal predecessors, (728), 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 11:41:53,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:41:53,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 231 [2023-08-27 11:41:53,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:41:53,452 INFO L124 PetriNetUnfolderBase]: 16/46 cut-off events. [2023-08-27 11:41:53,453 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 11:41:53,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 46 events. 16/46 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 7 based on Foata normal form. 9/55 useless extension candidates. Maximal degree in co-relation 106. Up to 34 conditions per place. [2023-08-27 11:41:53,454 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-27 11:41:53,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 22 transitions, 108 flow [2023-08-27 11:41:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:41:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:41:53,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2023-08-27 11:41:53,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2023-08-27 11:41:53,456 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 426 transitions. [2023-08-27 11:41:53,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 426 transitions. [2023-08-27 11:41:53,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:41:53,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 426 transitions. [2023-08-27 11:41:53,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 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 11:41:53,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 11:41:53,460 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 11:41:53,460 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 72 flow. Second operand 4 states and 426 transitions. [2023-08-27 11:41:53,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 22 transitions, 108 flow [2023-08-27 11:41:53,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 22 transitions, 89 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 11:41:53,462 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-27 11:41:53,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, 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=19, PETRI_TRANSITIONS=0} [2023-08-27 11:41:53,464 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -18 predicate places. [2023-08-27 11:41:53,464 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-27 11:41:53,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 states have internal predecessors, (728), 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 11:41:53,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (12 of 13 remaining) [2023-08-27 11:41:53,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-27 11:41:53,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-27 11:41:53,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-27 11:41:53,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-27 11:41:53,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-27 11:41:53,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-27 11:41:53,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-27 11:41:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-27 11:41:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-27 11:41:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-27 11:41:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-27 11:41:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-27 11:41:53,481 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 11:41:53,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:41:53,679 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-27 11:41:53,681 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:41:53,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 125 transitions, 258 flow [2023-08-27 11:41:53,699 INFO L124 PetriNetUnfolderBase]: 23/168 cut-off events. [2023-08-27 11:41:53,699 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:41:53,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 168 events. 23/168 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 432 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 88. Up to 6 conditions per place. [2023-08-27 11:41:53,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 125 transitions, 258 flow [2023-08-27 11:41:53,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 116 transitions, 237 flow [2023-08-27 11:41:53,701 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:41:53,701 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 116 transitions, 237 flow [2023-08-27 11:41:53,702 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 116 transitions, 237 flow [2023-08-27 11:41:53,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 116 transitions, 237 flow [2023-08-27 11:41:53,716 INFO L124 PetriNetUnfolderBase]: 22/159 cut-off events. [2023-08-27 11:41:53,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:41:53,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 159 events. 22/159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 413 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 88. Up to 6 conditions per place. [2023-08-27 11:41:53,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 3816 [2023-08-27 11:41:55,972 INFO L134 LiptonReduction]: Checked pairs total: 5607 [2023-08-27 11:41:55,974 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-27 11:41:55,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:41:55,979 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;@4a157085, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:41:55,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:41:55,983 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:41:55,983 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2023-08-27 11:41:55,983 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:41:55,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:41:55,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:41:55,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:41:55,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:41:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash 318935805, now seen corresponding path program 1 times [2023-08-27 11:41:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:41:55,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97067455] [2023-08-27 11:41:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:55,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:41:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:41:56,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:41:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:41:56,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:41:56,028 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:41:56,028 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:41:56,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:41:56,029 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:41:56,029 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:41:56,030 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:41:56,030 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:41:56,054 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 11:41:56,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 163 transitions, 344 flow [2023-08-27 11:41:56,080 INFO L124 PetriNetUnfolderBase]: 40/286 cut-off events. [2023-08-27 11:41:56,080 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:41:56,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 286 events. 40/286 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 891 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 170. Up to 9 conditions per place. [2023-08-27 11:41:56,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 163 transitions, 344 flow [2023-08-27 11:41:56,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 163 transitions, 344 flow [2023-08-27 11:41:56,083 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:41:56,084 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 163 transitions, 344 flow [2023-08-27 11:41:56,085 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 163 transitions, 344 flow [2023-08-27 11:41:56,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 163 transitions, 344 flow [2023-08-27 11:41:56,114 INFO L124 PetriNetUnfolderBase]: 40/286 cut-off events. [2023-08-27 11:41:56,114 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:41:56,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 286 events. 40/286 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 891 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 170. Up to 9 conditions per place. [2023-08-27 11:41:56,121 INFO L119 LiptonReduction]: Number of co-enabled transitions 11592 [2023-08-27 11:41:58,363 INFO L134 LiptonReduction]: Checked pairs total: 27492 [2023-08-27 11:41:58,363 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-27 11:41:58,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:41:58,365 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;@4a157085, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:41:58,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-27 11:41:58,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:41:58,367 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-27 11:41:58,367 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:41:58,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:41:58,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:41:58,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:41:58,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:41:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash 878454558, now seen corresponding path program 1 times [2023-08-27 11:41:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:41:58,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587812257] [2023-08-27 11:41:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:41:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:41:58,424 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 11:41:58,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:41:58,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587812257] [2023-08-27 11:41:58,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587812257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:41:58,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:41:58,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:41:58,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598463592] [2023-08-27 11:41:58,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:41:58,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:41:58,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:41:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:41:58,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:41:58,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 291 [2023-08-27 11:41:58,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 11:41:58,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:41:58,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 291 [2023-08-27 11:41:58,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:41:59,082 INFO L124 PetriNetUnfolderBase]: 6187/9818 cut-off events. [2023-08-27 11:41:59,082 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-08-27 11:41:59,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19584 conditions, 9818 events. 6187/9818 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 62818 event pairs, 2828 based on Foata normal form. 922/7282 useless extension candidates. Maximal degree in co-relation 2257. Up to 9644 conditions per place. [2023-08-27 11:41:59,142 INFO L140 encePairwiseOnDemand]: 271/291 looper letters, 63 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-27 11:41:59,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 290 flow [2023-08-27 11:41:59,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:41:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:41:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-27 11:41:59,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521191294387171 [2023-08-27 11:41:59,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-27 11:41:59,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-27 11:41:59,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:41:59,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-27 11:41:59,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 11:41:59,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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 11:41:59,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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 11:41:59,148 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 160 flow. Second operand 3 states and 482 transitions. [2023-08-27 11:41:59,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 290 flow [2023-08-27 11:41:59,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 290 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:41:59,151 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 146 flow [2023-08-27 11:41:59,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-27 11:41:59,152 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-08-27 11:41:59,152 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 146 flow [2023-08-27 11:41:59,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 11:41:59,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:41:59,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:41:59,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 11:41:59,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:41:59,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:41:59,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1909009682, now seen corresponding path program 1 times [2023-08-27 11:41:59,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:41:59,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307767450] [2023-08-27 11:41:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:59,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:41:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:41:59,202 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 11:41:59,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:41:59,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307767450] [2023-08-27 11:41:59,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307767450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:41:59,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:41:59,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:41:59,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767745942] [2023-08-27 11:41:59,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:41:59,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:41:59,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:41:59,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:41:59,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:41:59,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 291 [2023-08-27 11:41:59,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 11:41:59,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:41:59,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 291 [2023-08-27 11:41:59,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:41:59,753 INFO L124 PetriNetUnfolderBase]: 5499/8754 cut-off events. [2023-08-27 11:41:59,753 INFO L125 PetriNetUnfolderBase]: For 490/490 co-relation queries the response was YES. [2023-08-27 11:41:59,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18255 conditions, 8754 events. 5499/8754 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 54565 event pairs, 2170 based on Foata normal form. 0/6072 useless extension candidates. Maximal degree in co-relation 18167. Up to 8020 conditions per place. [2023-08-27 11:41:59,805 INFO L140 encePairwiseOnDemand]: 282/291 looper letters, 71 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-08-27 11:41:59,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 356 flow [2023-08-27 11:41:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:41:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:41:59,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-27 11:41:59,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326460481099656 [2023-08-27 11:41:59,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-27 11:41:59,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-27 11:41:59,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:41:59,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-27 11:41:59,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 11:41:59,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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 11:41:59,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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 11:41:59,811 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 146 flow. Second operand 3 states and 465 transitions. [2023-08-27 11:41:59,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 356 flow [2023-08-27 11:41:59,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 80 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:41:59,814 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 173 flow [2023-08-27 11:41:59,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2023-08-27 11:41:59,814 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-08-27 11:41:59,814 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 173 flow [2023-08-27 11:41:59,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 11:41:59,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:41:59,815 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:41:59,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:41:59,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:41:59,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:41:59,815 INFO L85 PathProgramCache]: Analyzing trace with hash -793811202, now seen corresponding path program 1 times [2023-08-27 11:41:59,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:41:59,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403226098] [2023-08-27 11:41:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:59,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:41:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:41:59,857 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 11:41:59,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:41:59,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403226098] [2023-08-27 11:41:59,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403226098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:41:59,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16598383] [2023-08-27 11:41:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:41:59,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:41:59,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:41:59,861 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 11:41:59,890 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 11:41:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:41:59,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 11:41:59,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:41:59,955 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 11:41:59,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:41:59,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16598383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:41:59,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:41:59,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 11:41:59,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912442807] [2023-08-27 11:41:59,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:41:59,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:41:59,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:41:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:41:59,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:41:59,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 291 [2023-08-27 11:41:59,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 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 11:41:59,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:41:59,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 291 [2023-08-27 11:41:59,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:00,538 INFO L124 PetriNetUnfolderBase]: 5148/8187 cut-off events. [2023-08-27 11:42:00,538 INFO L125 PetriNetUnfolderBase]: For 885/885 co-relation queries the response was YES. [2023-08-27 11:42:00,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18293 conditions, 8187 events. 5148/8187 cut-off events. For 885/885 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 54279 event pairs, 598 based on Foata normal form. 0/6223 useless extension candidates. Maximal degree in co-relation 11435. Up to 6037 conditions per place. [2023-08-27 11:42:00,579 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 90 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2023-08-27 11:42:00,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 458 flow [2023-08-27 11:42:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:42:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:42:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 614 transitions. [2023-08-27 11:42:00,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274914089347079 [2023-08-27 11:42:00,582 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 614 transitions. [2023-08-27 11:42:00,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 614 transitions. [2023-08-27 11:42:00,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:00,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 614 transitions. [2023-08-27 11:42:00,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 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 11:42:00,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 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 11:42:00,586 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 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 11:42:00,586 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 173 flow. Second operand 4 states and 614 transitions. [2023-08-27 11:42:00,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 458 flow [2023-08-27 11:42:00,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:42:00,589 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 172 flow [2023-08-27 11:42:00,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-27 11:42:00,590 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-08-27 11:42:00,590 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 172 flow [2023-08-27 11:42:00,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 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 11:42:00,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:00,590 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:42:00,597 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 11:42:00,796 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,SelfDestructingSolverStorable8 [2023-08-27 11:42:00,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:00,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:00,797 INFO L85 PathProgramCache]: Analyzing trace with hash -793811201, now seen corresponding path program 1 times [2023-08-27 11:42:00,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:00,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927932326] [2023-08-27 11:42:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:00,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:00,820 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 11:42:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927932326] [2023-08-27 11:42:00,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927932326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:00,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:00,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:42:00,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980987704] [2023-08-27 11:42:00,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:00,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:00,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:00,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:00,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 291 [2023-08-27 11:42:00,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 11:42:00,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:00,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 291 [2023-08-27 11:42:00,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:01,290 INFO L124 PetriNetUnfolderBase]: 4797/7596 cut-off events. [2023-08-27 11:42:01,290 INFO L125 PetriNetUnfolderBase]: For 763/763 co-relation queries the response was YES. [2023-08-27 11:42:01,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17002 conditions, 7596 events. 4797/7596 cut-off events. For 763/763 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 48702 event pairs, 517 based on Foata normal form. 0/5895 useless extension candidates. Maximal degree in co-relation 13934. Up to 6601 conditions per place. [2023-08-27 11:42:01,329 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 77 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-08-27 11:42:01,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 406 flow [2023-08-27 11:42:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-08-27 11:42:01,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5383734249713631 [2023-08-27 11:42:01,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-08-27 11:42:01,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-08-27 11:42:01,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:01,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-08-27 11:42:01,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 11:42:01,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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 11:42:01,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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 11:42:01,336 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 172 flow. Second operand 3 states and 470 transitions. [2023-08-27 11:42:01,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 406 flow [2023-08-27 11:42:01,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:42:01,339 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 180 flow [2023-08-27 11:42:01,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-27 11:42:01,340 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-08-27 11:42:01,340 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 180 flow [2023-08-27 11:42:01,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 11:42:01,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:01,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:01,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 11:42:01,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:01,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:01,341 INFO L85 PathProgramCache]: Analyzing trace with hash 556127094, now seen corresponding path program 1 times [2023-08-27 11:42:01,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:01,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266991240] [2023-08-27 11:42:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:01,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:01,411 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 11:42:01,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:01,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266991240] [2023-08-27 11:42:01,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266991240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:01,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:01,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:42:01,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750958789] [2023-08-27 11:42:01,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:01,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:42:01,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:01,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:42:01,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:42:01,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2023-08-27 11:42:01,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 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 11:42:01,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:01,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2023-08-27 11:42:01,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:02,130 INFO L124 PetriNetUnfolderBase]: 5887/9616 cut-off events. [2023-08-27 11:42:02,131 INFO L125 PetriNetUnfolderBase]: For 3242/3242 co-relation queries the response was YES. [2023-08-27 11:42:02,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21639 conditions, 9616 events. 5887/9616 cut-off events. For 3242/3242 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 61734 event pairs, 1018 based on Foata normal form. 0/7695 useless extension candidates. Maximal degree in co-relation 18363. Up to 5319 conditions per place. [2023-08-27 11:42:02,176 INFO L140 encePairwiseOnDemand]: 276/291 looper letters, 172 selfloop transitions, 19 changer transitions 0/197 dead transitions. [2023-08-27 11:42:02,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 197 transitions, 981 flow [2023-08-27 11:42:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:42:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:42:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1059 transitions. [2023-08-27 11:42:02,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198821796759941 [2023-08-27 11:42:02,179 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1059 transitions. [2023-08-27 11:42:02,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1059 transitions. [2023-08-27 11:42:02,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:02,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1059 transitions. [2023-08-27 11:42:02,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.28571428571428) internal successors, (1059), 7 states have internal predecessors, (1059), 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 11:42:02,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 291.0) internal successors, (2328), 8 states have internal predecessors, (2328), 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 11:42:02,185 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 291.0) internal successors, (2328), 8 states have internal predecessors, (2328), 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 11:42:02,185 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 180 flow. Second operand 7 states and 1059 transitions. [2023-08-27 11:42:02,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 197 transitions, 981 flow [2023-08-27 11:42:02,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 197 transitions, 963 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:42:02,190 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 335 flow [2023-08-27 11:42:02,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2023-08-27 11:42:02,191 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2023-08-27 11:42:02,191 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 335 flow [2023-08-27 11:42:02,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 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 11:42:02,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:02,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:02,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 11:42:02,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:02,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash 556127095, now seen corresponding path program 1 times [2023-08-27 11:42:02,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:02,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138535151] [2023-08-27 11:42:02,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:02,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:02,252 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 11:42:02,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:02,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138535151] [2023-08-27 11:42:02,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138535151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:02,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:02,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:42:02,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755016773] [2023-08-27 11:42:02,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:02,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:42:02,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:02,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:42:02,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:42:02,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2023-08-27 11:42:02,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 335 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 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 11:42:02,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:02,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2023-08-27 11:42:02,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:02,941 INFO L124 PetriNetUnfolderBase]: 5544/9238 cut-off events. [2023-08-27 11:42:02,941 INFO L125 PetriNetUnfolderBase]: For 7292/7292 co-relation queries the response was YES. [2023-08-27 11:42:02,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25086 conditions, 9238 events. 5544/9238 cut-off events. For 7292/7292 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 60477 event pairs, 952 based on Foata normal form. 315/8706 useless extension candidates. Maximal degree in co-relation 21554. Up to 5409 conditions per place. [2023-08-27 11:42:02,988 INFO L140 encePairwiseOnDemand]: 276/291 looper letters, 175 selfloop transitions, 24 changer transitions 0/205 dead transitions. [2023-08-27 11:42:02,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 205 transitions, 1164 flow [2023-08-27 11:42:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:42:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:42:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1056 transitions. [2023-08-27 11:42:02,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184094256259205 [2023-08-27 11:42:02,991 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1056 transitions. [2023-08-27 11:42:02,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1056 transitions. [2023-08-27 11:42:02,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:02,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1056 transitions. [2023-08-27 11:42:02,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 150.85714285714286) internal successors, (1056), 7 states have internal predecessors, (1056), 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 11:42:02,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 291.0) internal successors, (2328), 8 states have internal predecessors, (2328), 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 11:42:02,997 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 291.0) internal successors, (2328), 8 states have internal predecessors, (2328), 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 11:42:02,997 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 335 flow. Second operand 7 states and 1056 transitions. [2023-08-27 11:42:02,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 205 transitions, 1164 flow [2023-08-27 11:42:03,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 205 transitions, 1160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:42:03,023 INFO L231 Difference]: Finished difference. Result has 83 places, 86 transitions, 525 flow [2023-08-27 11:42:03,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=525, PETRI_PLACES=83, PETRI_TRANSITIONS=86} [2023-08-27 11:42:03,023 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2023-08-27 11:42:03,023 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 86 transitions, 525 flow [2023-08-27 11:42:03,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 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 11:42:03,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:03,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:03,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 11:42:03,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:03,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:03,025 INFO L85 PathProgramCache]: Analyzing trace with hash 22706991, now seen corresponding path program 1 times [2023-08-27 11:42:03,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:03,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204487772] [2023-08-27 11:42:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:03,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:03,054 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 11:42:03,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:03,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204487772] [2023-08-27 11:42:03,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204487772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:42:03,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504723588] [2023-08-27 11:42:03,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:03,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:42:03,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:42:03,057 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 11:42:03,083 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 11:42:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:03,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:42:03,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:42:03,148 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 11:42:03,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:42:03,171 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 11:42:03,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504723588] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:42:03,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:42:03,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:42:03,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179443695] [2023-08-27 11:42:03,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:42:03,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:42:03,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:03,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:42:03,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:42:03,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 291 [2023-08-27 11:42:03,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 86 transitions, 525 flow. Second operand has 7 states, 7 states have (on average 134.28571428571428) internal successors, (940), 7 states have internal predecessors, (940), 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 11:42:03,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:03,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 291 [2023-08-27 11:42:03,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:03,395 INFO L124 PetriNetUnfolderBase]: 1013/2033 cut-off events. [2023-08-27 11:42:03,395 INFO L125 PetriNetUnfolderBase]: For 4987/4987 co-relation queries the response was YES. [2023-08-27 11:42:03,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7035 conditions, 2033 events. 1013/2033 cut-off events. For 4987/4987 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13262 event pairs, 49 based on Foata normal form. 249/2282 useless extension candidates. Maximal degree in co-relation 5506. Up to 1294 conditions per place. [2023-08-27 11:42:03,408 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 128 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2023-08-27 11:42:03,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 136 transitions, 1207 flow [2023-08-27 11:42:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:42:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:42:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2023-08-27 11:42:03,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003436426116838 [2023-08-27 11:42:03,410 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2023-08-27 11:42:03,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2023-08-27 11:42:03,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:03,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2023-08-27 11:42:03,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 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 11:42:03,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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 11:42:03,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 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 11:42:03,414 INFO L175 Difference]: Start difference. First operand has 83 places, 86 transitions, 525 flow. Second operand 5 states and 728 transitions. [2023-08-27 11:42:03,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 136 transitions, 1207 flow [2023-08-27 11:42:03,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 1179 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-27 11:42:03,424 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 470 flow [2023-08-27 11:42:03,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-08-27 11:42:03,425 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2023-08-27 11:42:03,425 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 470 flow [2023-08-27 11:42:03,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.28571428571428) internal successors, (940), 7 states have internal predecessors, (940), 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 11:42:03,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:03,426 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:03,437 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 11:42:03,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:42:03,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:03,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:03,632 INFO L85 PathProgramCache]: Analyzing trace with hash 45517407, now seen corresponding path program 1 times [2023-08-27 11:42:03,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:03,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761299729] [2023-08-27 11:42:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:03,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:03,714 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 11:42:03,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:03,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761299729] [2023-08-27 11:42:03,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761299729] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:03,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:03,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:42:03,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133759379] [2023-08-27 11:42:03,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:03,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:42:03,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:03,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:42:03,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:42:03,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2023-08-27 11:42:03,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 470 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 11:42:03,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:03,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2023-08-27 11:42:03,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:03,968 INFO L124 PetriNetUnfolderBase]: 1108/1950 cut-off events. [2023-08-27 11:42:03,968 INFO L125 PetriNetUnfolderBase]: For 4882/4882 co-relation queries the response was YES. [2023-08-27 11:42:03,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6976 conditions, 1950 events. 1108/1950 cut-off events. For 4882/4882 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11131 event pairs, 226 based on Foata normal form. 57/2007 useless extension candidates. Maximal degree in co-relation 6850. Up to 1175 conditions per place. [2023-08-27 11:42:03,979 INFO L140 encePairwiseOnDemand]: 278/291 looper letters, 86 selfloop transitions, 22 changer transitions 1/114 dead transitions. [2023-08-27 11:42:03,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 114 transitions, 923 flow [2023-08-27 11:42:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:42:03,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:42:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 824 transitions. [2023-08-27 11:42:03,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47193585337915234 [2023-08-27 11:42:03,982 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 824 transitions. [2023-08-27 11:42:03,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 824 transitions. [2023-08-27 11:42:03,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:03,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 824 transitions. [2023-08-27 11:42:03,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.33333333333334) internal successors, (824), 6 states have internal predecessors, (824), 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 11:42:03,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 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 11:42:03,988 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 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 11:42:03,988 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 470 flow. Second operand 6 states and 824 transitions. [2023-08-27 11:42:03,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 114 transitions, 923 flow [2023-08-27 11:42:04,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 114 transitions, 898 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-27 11:42:04,003 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 647 flow [2023-08-27 11:42:04,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=647, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2023-08-27 11:42:04,004 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 19 predicate places. [2023-08-27 11:42:04,004 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 647 flow [2023-08-27 11:42:04,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 11:42:04,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:04,004 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:04,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 11:42:04,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:04,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:04,005 INFO L85 PathProgramCache]: Analyzing trace with hash 45517436, now seen corresponding path program 1 times [2023-08-27 11:42:04,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:04,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796185848] [2023-08-27 11:42:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:04,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:04,054 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 11:42:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:04,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796185848] [2023-08-27 11:42:04,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796185848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:04,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:04,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:42:04,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927758737] [2023-08-27 11:42:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:42:04,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:42:04,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:42:04,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2023-08-27 11:42:04,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 647 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 11:42:04,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:04,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2023-08-27 11:42:04,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:04,280 INFO L124 PetriNetUnfolderBase]: 963/1703 cut-off events. [2023-08-27 11:42:04,281 INFO L125 PetriNetUnfolderBase]: For 5276/5276 co-relation queries the response was YES. [2023-08-27 11:42:04,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6208 conditions, 1703 events. 963/1703 cut-off events. For 5276/5276 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9379 event pairs, 196 based on Foata normal form. 57/1760 useless extension candidates. Maximal degree in co-relation 6087. Up to 1047 conditions per place. [2023-08-27 11:42:04,287 INFO L140 encePairwiseOnDemand]: 278/291 looper letters, 78 selfloop transitions, 19 changer transitions 4/106 dead transitions. [2023-08-27 11:42:04,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 106 transitions, 904 flow [2023-08-27 11:42:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:42:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:42:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 823 transitions. [2023-08-27 11:42:04,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713631156930126 [2023-08-27 11:42:04,293 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 823 transitions. [2023-08-27 11:42:04,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 823 transitions. [2023-08-27 11:42:04,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:04,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 823 transitions. [2023-08-27 11:42:04,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 11:42:04,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 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 11:42:04,298 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 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 11:42:04,298 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 647 flow. Second operand 6 states and 823 transitions. [2023-08-27 11:42:04,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 106 transitions, 904 flow [2023-08-27 11:42:04,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 878 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 11:42:04,314 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 570 flow [2023-08-27 11:42:04,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=570, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2023-08-27 11:42:04,314 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 22 predicate places. [2023-08-27 11:42:04,314 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 570 flow [2023-08-27 11:42:04,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 11:42:04,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:04,315 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:04,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 11:42:04,315 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:04,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:04,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1173755826, now seen corresponding path program 1 times [2023-08-27 11:42:04,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:04,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655463888] [2023-08-27 11:42:04,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:04,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:04,392 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 11:42:04,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:04,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655463888] [2023-08-27 11:42:04,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655463888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:04,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:04,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:42:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969545948] [2023-08-27 11:42:04,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:04,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:42:04,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:04,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:42:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:42:04,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 291 [2023-08-27 11:42:04,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 570 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:04,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:04,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 291 [2023-08-27 11:42:04,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:04,714 INFO L124 PetriNetUnfolderBase]: 1046/1861 cut-off events. [2023-08-27 11:42:04,714 INFO L125 PetriNetUnfolderBase]: For 5292/5292 co-relation queries the response was YES. [2023-08-27 11:42:04,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6824 conditions, 1861 events. 1046/1861 cut-off events. For 5292/5292 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10572 event pairs, 130 based on Foata normal form. 18/1879 useless extension candidates. Maximal degree in co-relation 6702. Up to 812 conditions per place. [2023-08-27 11:42:04,723 INFO L140 encePairwiseOnDemand]: 277/291 looper letters, 111 selfloop transitions, 36 changer transitions 8/160 dead transitions. [2023-08-27 11:42:04,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 160 transitions, 1307 flow [2023-08-27 11:42:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:42:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:42:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1321 transitions. [2023-08-27 11:42:04,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45395189003436426 [2023-08-27 11:42:04,727 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1321 transitions. [2023-08-27 11:42:04,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1321 transitions. [2023-08-27 11:42:04,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:04,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1321 transitions. [2023-08-27 11:42:04,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.1) internal successors, (1321), 10 states have internal predecessors, (1321), 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 11:42:04,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 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 11:42:04,735 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 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 11:42:04,735 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 570 flow. Second operand 10 states and 1321 transitions. [2023-08-27 11:42:04,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 160 transitions, 1307 flow [2023-08-27 11:42:04,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 160 transitions, 1294 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:42:04,751 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 756 flow [2023-08-27 11:42:04,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=756, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2023-08-27 11:42:04,752 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2023-08-27 11:42:04,752 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 756 flow [2023-08-27 11:42:04,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:04,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:04,753 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:04,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 11:42:04,753 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:04,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash -476424466, now seen corresponding path program 1 times [2023-08-27 11:42:04,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:04,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137313782] [2023-08-27 11:42:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:04,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:04,838 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 11:42:04,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:04,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137313782] [2023-08-27 11:42:04,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137313782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:04,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:04,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:42:04,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855689348] [2023-08-27 11:42:04,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:04,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:42:04,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:04,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:42:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:42:04,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 291 [2023-08-27 11:42:04,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 756 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:04,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:04,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 291 [2023-08-27 11:42:04,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:05,166 INFO L124 PetriNetUnfolderBase]: 1023/1853 cut-off events. [2023-08-27 11:42:05,167 INFO L125 PetriNetUnfolderBase]: For 6843/6843 co-relation queries the response was YES. [2023-08-27 11:42:05,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7232 conditions, 1853 events. 1023/1853 cut-off events. For 6843/6843 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10685 event pairs, 145 based on Foata normal form. 18/1871 useless extension candidates. Maximal degree in co-relation 7100. Up to 820 conditions per place. [2023-08-27 11:42:05,175 INFO L140 encePairwiseOnDemand]: 278/291 looper letters, 113 selfloop transitions, 33 changer transitions 12/163 dead transitions. [2023-08-27 11:42:05,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 163 transitions, 1414 flow [2023-08-27 11:42:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:42:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:42:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1562 transitions. [2023-08-27 11:42:05,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473081328751432 [2023-08-27 11:42:05,179 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1562 transitions. [2023-08-27 11:42:05,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1562 transitions. [2023-08-27 11:42:05,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:05,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1562 transitions. [2023-08-27 11:42:05,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 130.16666666666666) internal successors, (1562), 12 states have internal predecessors, (1562), 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 11:42:05,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 291.0) internal successors, (3783), 13 states have internal predecessors, (3783), 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 11:42:05,188 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 291.0) internal successors, (3783), 13 states have internal predecessors, (3783), 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 11:42:05,188 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 756 flow. Second operand 12 states and 1562 transitions. [2023-08-27 11:42:05,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 163 transitions, 1414 flow [2023-08-27 11:42:05,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 163 transitions, 1366 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 11:42:05,210 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 769 flow [2023-08-27 11:42:05,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=769, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2023-08-27 11:42:05,210 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 38 predicate places. [2023-08-27 11:42:05,210 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 769 flow [2023-08-27 11:42:05,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:05,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:05,211 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:05,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 11:42:05,212 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:05,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:05,212 INFO L85 PathProgramCache]: Analyzing trace with hash -465699246, now seen corresponding path program 1 times [2023-08-27 11:42:05,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:05,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969189220] [2023-08-27 11:42:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:05,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:05,275 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 11:42:05,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:05,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969189220] [2023-08-27 11:42:05,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969189220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:05,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:05,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:42:05,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826445643] [2023-08-27 11:42:05,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:05,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:42:05,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:05,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:42:05,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:42:05,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 291 [2023-08-27 11:42:05,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 769 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:05,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:05,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 291 [2023-08-27 11:42:05,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:05,596 INFO L124 PetriNetUnfolderBase]: 1066/1920 cut-off events. [2023-08-27 11:42:05,596 INFO L125 PetriNetUnfolderBase]: For 8012/8012 co-relation queries the response was YES. [2023-08-27 11:42:05,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7645 conditions, 1920 events. 1066/1920 cut-off events. For 8012/8012 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11191 event pairs, 220 based on Foata normal form. 33/1953 useless extension candidates. Maximal degree in co-relation 7506. Up to 1093 conditions per place. [2023-08-27 11:42:05,604 INFO L140 encePairwiseOnDemand]: 278/291 looper letters, 112 selfloop transitions, 34 changer transitions 0/151 dead transitions. [2023-08-27 11:42:05,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 151 transitions, 1383 flow [2023-08-27 11:42:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:42:05,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:42:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1551 transitions. [2023-08-27 11:42:05,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44415807560137455 [2023-08-27 11:42:05,607 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1551 transitions. [2023-08-27 11:42:05,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1551 transitions. [2023-08-27 11:42:05,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:05,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1551 transitions. [2023-08-27 11:42:05,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 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 11:42:05,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 291.0) internal successors, (3783), 13 states have internal predecessors, (3783), 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 11:42:05,614 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 291.0) internal successors, (3783), 13 states have internal predecessors, (3783), 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 11:42:05,614 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 769 flow. Second operand 12 states and 1551 transitions. [2023-08-27 11:42:05,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 151 transitions, 1383 flow [2023-08-27 11:42:05,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 151 transitions, 1331 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-27 11:42:05,644 INFO L231 Difference]: Finished difference. Result has 104 places, 85 transitions, 894 flow [2023-08-27 11:42:05,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=894, PETRI_PLACES=104, PETRI_TRANSITIONS=85} [2023-08-27 11:42:05,645 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2023-08-27 11:42:05,645 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 85 transitions, 894 flow [2023-08-27 11:42:05,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:05,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:05,646 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:05,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 11:42:05,646 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:05,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:05,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1951292415, now seen corresponding path program 1 times [2023-08-27 11:42:05,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:05,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431164485] [2023-08-27 11:42:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:05,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:05,755 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 11:42:05,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431164485] [2023-08-27 11:42:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431164485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:05,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:42:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734383624] [2023-08-27 11:42:05,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:05,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:42:05,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:05,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:42:05,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:42:05,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 291 [2023-08-27 11:42:05,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 85 transitions, 894 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:05,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:05,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 291 [2023-08-27 11:42:05,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:06,105 INFO L124 PetriNetUnfolderBase]: 1112/2020 cut-off events. [2023-08-27 11:42:06,105 INFO L125 PetriNetUnfolderBase]: For 10159/10159 co-relation queries the response was YES. [2023-08-27 11:42:06,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8271 conditions, 2020 events. 1112/2020 cut-off events. For 10159/10159 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12104 event pairs, 184 based on Foata normal form. 30/2050 useless extension candidates. Maximal degree in co-relation 8128. Up to 1018 conditions per place. [2023-08-27 11:42:06,113 INFO L140 encePairwiseOnDemand]: 278/291 looper letters, 120 selfloop transitions, 47 changer transitions 8/180 dead transitions. [2023-08-27 11:42:06,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 180 transitions, 1721 flow [2023-08-27 11:42:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:42:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:42:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1808 transitions. [2023-08-27 11:42:06,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44378988708885614 [2023-08-27 11:42:06,119 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1808 transitions. [2023-08-27 11:42:06,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1808 transitions. [2023-08-27 11:42:06,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:06,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1808 transitions. [2023-08-27 11:42:06,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.14285714285714) internal successors, (1808), 14 states have internal predecessors, (1808), 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 11:42:06,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 291.0) internal successors, (4365), 15 states have internal predecessors, (4365), 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 11:42:06,129 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 291.0) internal successors, (4365), 15 states have internal predecessors, (4365), 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 11:42:06,129 INFO L175 Difference]: Start difference. First operand has 104 places, 85 transitions, 894 flow. Second operand 14 states and 1808 transitions. [2023-08-27 11:42:06,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 180 transitions, 1721 flow [2023-08-27 11:42:06,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 180 transitions, 1666 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-27 11:42:06,158 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 1143 flow [2023-08-27 11:42:06,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1143, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2023-08-27 11:42:06,159 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 58 predicate places. [2023-08-27 11:42:06,159 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 1143 flow [2023-08-27 11:42:06,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:06,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:06,159 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:06,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 11:42:06,160 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:06,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:06,160 INFO L85 PathProgramCache]: Analyzing trace with hash -476376577, now seen corresponding path program 2 times [2023-08-27 11:42:06,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:06,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048016838] [2023-08-27 11:42:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:06,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:06,224 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 11:42:06,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:06,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048016838] [2023-08-27 11:42:06,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048016838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:06,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:06,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:42:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849502932] [2023-08-27 11:42:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:06,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:42:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:42:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:42:06,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 291 [2023-08-27 11:42:06,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 1143 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:06,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:06,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 291 [2023-08-27 11:42:06,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:06,576 INFO L124 PetriNetUnfolderBase]: 1020/1853 cut-off events. [2023-08-27 11:42:06,576 INFO L125 PetriNetUnfolderBase]: For 10278/10278 co-relation queries the response was YES. [2023-08-27 11:42:06,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7941 conditions, 1853 events. 1020/1853 cut-off events. For 10278/10278 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10832 event pairs, 151 based on Foata normal form. 33/1886 useless extension candidates. Maximal degree in co-relation 7791. Up to 871 conditions per place. [2023-08-27 11:42:06,583 INFO L140 encePairwiseOnDemand]: 278/291 looper letters, 101 selfloop transitions, 42 changer transitions 10/158 dead transitions. [2023-08-27 11:42:06,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 158 transitions, 1558 flow [2023-08-27 11:42:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:42:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:42:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1796 transitions. [2023-08-27 11:42:06,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4408443789887089 [2023-08-27 11:42:06,586 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1796 transitions. [2023-08-27 11:42:06,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1796 transitions. [2023-08-27 11:42:06,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:06,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1796 transitions. [2023-08-27 11:42:06,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.28571428571428) internal successors, (1796), 14 states have internal predecessors, (1796), 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 11:42:06,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 291.0) internal successors, (4365), 15 states have internal predecessors, (4365), 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 11:42:06,594 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 291.0) internal successors, (4365), 15 states have internal predecessors, (4365), 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 11:42:06,594 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 1143 flow. Second operand 14 states and 1796 transitions. [2023-08-27 11:42:06,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 158 transitions, 1558 flow [2023-08-27 11:42:06,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 158 transitions, 1351 flow, removed 40 selfloop flow, removed 16 redundant places. [2023-08-27 11:42:06,627 INFO L231 Difference]: Finished difference. Result has 112 places, 85 transitions, 823 flow [2023-08-27 11:42:06,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=823, PETRI_PLACES=112, PETRI_TRANSITIONS=85} [2023-08-27 11:42:06,628 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 54 predicate places. [2023-08-27 11:42:06,628 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 85 transitions, 823 flow [2023-08-27 11:42:06,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:06,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:06,628 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:06,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 11:42:06,628 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:06,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1951292416, now seen corresponding path program 2 times [2023-08-27 11:42:06,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:06,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976489638] [2023-08-27 11:42:06,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:06,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:06,688 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 11:42:06,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:06,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976489638] [2023-08-27 11:42:06,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976489638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:06,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:06,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:42:06,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980644613] [2023-08-27 11:42:06,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:06,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:42:06,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:06,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:42:06,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:42:06,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 291 [2023-08-27 11:42:06,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 85 transitions, 823 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:06,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:06,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 291 [2023-08-27 11:42:06,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:06,964 INFO L124 PetriNetUnfolderBase]: 883/1596 cut-off events. [2023-08-27 11:42:06,964 INFO L125 PetriNetUnfolderBase]: For 6551/6551 co-relation queries the response was YES. [2023-08-27 11:42:06,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6375 conditions, 1596 events. 883/1596 cut-off events. For 6551/6551 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8818 event pairs, 151 based on Foata normal form. 30/1626 useless extension candidates. Maximal degree in co-relation 6249. Up to 928 conditions per place. [2023-08-27 11:42:06,971 INFO L140 encePairwiseOnDemand]: 278/291 looper letters, 93 selfloop transitions, 23 changer transitions 3/124 dead transitions. [2023-08-27 11:42:06,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 124 transitions, 1113 flow [2023-08-27 11:42:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:42:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:42:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1292 transitions. [2023-08-27 11:42:06,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4439862542955326 [2023-08-27 11:42:06,974 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1292 transitions. [2023-08-27 11:42:06,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1292 transitions. [2023-08-27 11:42:06,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:06,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1292 transitions. [2023-08-27 11:42:06,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.2) internal successors, (1292), 10 states have internal predecessors, (1292), 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 11:42:06,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 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 11:42:06,979 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 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 11:42:06,979 INFO L175 Difference]: Start difference. First operand has 112 places, 85 transitions, 823 flow. Second operand 10 states and 1292 transitions. [2023-08-27 11:42:06,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 124 transitions, 1113 flow [2023-08-27 11:42:06,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 124 transitions, 1010 flow, removed 17 selfloop flow, removed 14 redundant places. [2023-08-27 11:42:07,000 INFO L231 Difference]: Finished difference. Result has 103 places, 73 transitions, 635 flow [2023-08-27 11:42:07,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=635, PETRI_PLACES=103, PETRI_TRANSITIONS=73} [2023-08-27 11:42:07,000 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2023-08-27 11:42:07,001 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 73 transitions, 635 flow [2023-08-27 11:42:07,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 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 11:42:07,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:07,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:07,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 11:42:07,001 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:07,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:07,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1924376101, now seen corresponding path program 1 times [2023-08-27 11:42:07,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:07,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92157197] [2023-08-27 11:42:07,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:07,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:07,100 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 11:42:07,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:07,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92157197] [2023-08-27 11:42:07,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92157197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:07,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:07,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:42:07,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939060723] [2023-08-27 11:42:07,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:07,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:42:07,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:07,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:42:07,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:42:07,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 291 [2023-08-27 11:42:07,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 73 transitions, 635 flow. Second operand has 7 states, 7 states have (on average 121.28571428571429) internal successors, (849), 7 states have internal predecessors, (849), 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 11:42:07,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:07,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 291 [2023-08-27 11:42:07,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:07,340 INFO L124 PetriNetUnfolderBase]: 874/1587 cut-off events. [2023-08-27 11:42:07,341 INFO L125 PetriNetUnfolderBase]: For 6109/6109 co-relation queries the response was YES. [2023-08-27 11:42:07,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6263 conditions, 1587 events. 874/1587 cut-off events. For 6109/6109 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8922 event pairs, 157 based on Foata normal form. 18/1605 useless extension candidates. Maximal degree in co-relation 6129. Up to 829 conditions per place. [2023-08-27 11:42:07,346 INFO L140 encePairwiseOnDemand]: 279/291 looper letters, 90 selfloop transitions, 26 changer transitions 10/131 dead transitions. [2023-08-27 11:42:07,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 131 transitions, 1224 flow [2023-08-27 11:42:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:42:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:42:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1165 transitions. [2023-08-27 11:42:07,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448262695685376 [2023-08-27 11:42:07,348 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1165 transitions. [2023-08-27 11:42:07,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1165 transitions. [2023-08-27 11:42:07,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:07,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1165 transitions. [2023-08-27 11:42:07,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 129.44444444444446) internal successors, (1165), 9 states have internal predecessors, (1165), 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 11:42:07,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 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 11:42:07,353 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 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 11:42:07,353 INFO L175 Difference]: Start difference. First operand has 103 places, 73 transitions, 635 flow. Second operand 9 states and 1165 transitions. [2023-08-27 11:42:07,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 131 transitions, 1224 flow [2023-08-27 11:42:07,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 131 transitions, 1138 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-08-27 11:42:07,371 INFO L231 Difference]: Finished difference. Result has 105 places, 80 transitions, 733 flow [2023-08-27 11:42:07,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=733, PETRI_PLACES=105, PETRI_TRANSITIONS=80} [2023-08-27 11:42:07,372 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 47 predicate places. [2023-08-27 11:42:07,372 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 80 transitions, 733 flow [2023-08-27 11:42:07,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.28571428571429) internal successors, (849), 7 states have internal predecessors, (849), 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 11:42:07,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:07,372 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:07,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 11:42:07,373 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:07,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:07,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1924376167, now seen corresponding path program 1 times [2023-08-27 11:42:07,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:07,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509683631] [2023-08-27 11:42:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:07,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:07,438 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 11:42:07,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:07,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509683631] [2023-08-27 11:42:07,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509683631] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:07,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:07,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:42:07,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75574076] [2023-08-27 11:42:07,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:07,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:42:07,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:42:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:42:07,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 291 [2023-08-27 11:42:07,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 80 transitions, 733 flow. Second operand has 7 states, 7 states have (on average 121.28571428571429) internal successors, (849), 7 states have internal predecessors, (849), 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 11:42:07,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:07,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 291 [2023-08-27 11:42:07,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:07,695 INFO L124 PetriNetUnfolderBase]: 850/1554 cut-off events. [2023-08-27 11:42:07,695 INFO L125 PetriNetUnfolderBase]: For 5584/5584 co-relation queries the response was YES. [2023-08-27 11:42:07,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6150 conditions, 1554 events. 850/1554 cut-off events. For 5584/5584 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8804 event pairs, 157 based on Foata normal form. 18/1572 useless extension candidates. Maximal degree in co-relation 6016. Up to 829 conditions per place. [2023-08-27 11:42:07,701 INFO L140 encePairwiseOnDemand]: 280/291 looper letters, 82 selfloop transitions, 17 changer transitions 24/128 dead transitions. [2023-08-27 11:42:07,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 128 transitions, 1183 flow [2023-08-27 11:42:07,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:42:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:42:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1281 transitions. [2023-08-27 11:42:07,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4402061855670103 [2023-08-27 11:42:07,703 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1281 transitions. [2023-08-27 11:42:07,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1281 transitions. [2023-08-27 11:42:07,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:07,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1281 transitions. [2023-08-27 11:42:07,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 128.1) internal successors, (1281), 10 states have internal predecessors, (1281), 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 11:42:07,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 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 11:42:07,707 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 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 11:42:07,707 INFO L175 Difference]: Start difference. First operand has 105 places, 80 transitions, 733 flow. Second operand 10 states and 1281 transitions. [2023-08-27 11:42:07,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 128 transitions, 1183 flow [2023-08-27 11:42:07,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 128 transitions, 1150 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-27 11:42:07,723 INFO L231 Difference]: Finished difference. Result has 109 places, 71 transitions, 604 flow [2023-08-27 11:42:07,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=604, PETRI_PLACES=109, PETRI_TRANSITIONS=71} [2023-08-27 11:42:07,724 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 51 predicate places. [2023-08-27 11:42:07,724 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 71 transitions, 604 flow [2023-08-27 11:42:07,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.28571428571429) internal successors, (849), 7 states have internal predecessors, (849), 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 11:42:07,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:07,725 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] [2023-08-27 11:42:07,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 11:42:07,725 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:07,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1512277819, now seen corresponding path program 1 times [2023-08-27 11:42:07,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:07,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063795289] [2023-08-27 11:42:07,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:07,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:07,803 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 11:42:07,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:07,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063795289] [2023-08-27 11:42:07,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063795289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:07,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:07,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:42:07,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707628870] [2023-08-27 11:42:07,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:07,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:42:07,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:42:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:42:07,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 291 [2023-08-27 11:42:07,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 71 transitions, 604 flow. Second operand has 8 states, 8 states have (on average 116.375) internal successors, (931), 8 states have internal predecessors, (931), 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 11:42:07,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:07,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 291 [2023-08-27 11:42:07,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:08,199 INFO L124 PetriNetUnfolderBase]: 880/1590 cut-off events. [2023-08-27 11:42:08,199 INFO L125 PetriNetUnfolderBase]: For 6652/6652 co-relation queries the response was YES. [2023-08-27 11:42:08,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6157 conditions, 1590 events. 880/1590 cut-off events. For 6652/6652 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8815 event pairs, 100 based on Foata normal form. 18/1608 useless extension candidates. Maximal degree in co-relation 6022. Up to 442 conditions per place. [2023-08-27 11:42:08,207 INFO L140 encePairwiseOnDemand]: 279/291 looper letters, 102 selfloop transitions, 37 changer transitions 14/158 dead transitions. [2023-08-27 11:42:08,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 158 transitions, 1304 flow [2023-08-27 11:42:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:42:08,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:42:08,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1954 transitions. [2023-08-27 11:42:08,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41967353951890035 [2023-08-27 11:42:08,210 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1954 transitions. [2023-08-27 11:42:08,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1954 transitions. [2023-08-27 11:42:08,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:08,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1954 transitions. [2023-08-27 11:42:08,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.125) internal successors, (1954), 16 states have internal predecessors, (1954), 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 11:42:08,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 291.0) internal successors, (4947), 17 states have internal predecessors, (4947), 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 11:42:08,216 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 291.0) internal successors, (4947), 17 states have internal predecessors, (4947), 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 11:42:08,216 INFO L175 Difference]: Start difference. First operand has 109 places, 71 transitions, 604 flow. Second operand 16 states and 1954 transitions. [2023-08-27 11:42:08,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 158 transitions, 1304 flow [2023-08-27 11:42:08,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 158 transitions, 1244 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-08-27 11:42:08,230 INFO L231 Difference]: Finished difference. Result has 115 places, 74 transitions, 702 flow [2023-08-27 11:42:08,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=702, PETRI_PLACES=115, PETRI_TRANSITIONS=74} [2023-08-27 11:42:08,231 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 57 predicate places. [2023-08-27 11:42:08,231 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 74 transitions, 702 flow [2023-08-27 11:42:08,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.375) internal successors, (931), 8 states have internal predecessors, (931), 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 11:42:08,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:08,232 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] [2023-08-27 11:42:08,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 11:42:08,232 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:08,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:08,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1124204736, now seen corresponding path program 1 times [2023-08-27 11:42:08,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:08,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448915342] [2023-08-27 11:42:08,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:08,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:08,309 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 11:42:08,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:08,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448915342] [2023-08-27 11:42:08,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448915342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:08,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:08,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:42:08,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125509093] [2023-08-27 11:42:08,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:08,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:42:08,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:08,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:42:08,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:42:08,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 291 [2023-08-27 11:42:08,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 74 transitions, 702 flow. Second operand has 8 states, 8 states have (on average 116.375) internal successors, (931), 8 states have internal predecessors, (931), 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 11:42:08,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:08,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 291 [2023-08-27 11:42:08,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:08,638 INFO L124 PetriNetUnfolderBase]: 843/1538 cut-off events. [2023-08-27 11:42:08,638 INFO L125 PetriNetUnfolderBase]: For 7035/7035 co-relation queries the response was YES. [2023-08-27 11:42:08,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 1538 events. 843/1538 cut-off events. For 7035/7035 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8648 event pairs, 94 based on Foata normal form. 18/1556 useless extension candidates. Maximal degree in co-relation 5951. Up to 442 conditions per place. [2023-08-27 11:42:08,643 INFO L140 encePairwiseOnDemand]: 279/291 looper letters, 90 selfloop transitions, 25 changer transitions 30/150 dead transitions. [2023-08-27 11:42:08,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 150 transitions, 1236 flow [2023-08-27 11:42:08,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:42:08,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:42:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1837 transitions. [2023-08-27 11:42:08,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42084765177548683 [2023-08-27 11:42:08,646 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1837 transitions. [2023-08-27 11:42:08,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1837 transitions. [2023-08-27 11:42:08,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:08,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1837 transitions. [2023-08-27 11:42:08,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 122.46666666666667) internal successors, (1837), 15 states have internal predecessors, (1837), 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 11:42:08,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 291.0) internal successors, (4656), 16 states have internal predecessors, (4656), 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 11:42:08,650 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 291.0) internal successors, (4656), 16 states have internal predecessors, (4656), 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 11:42:08,651 INFO L175 Difference]: Start difference. First operand has 115 places, 74 transitions, 702 flow. Second operand 15 states and 1837 transitions. [2023-08-27 11:42:08,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 150 transitions, 1236 flow [2023-08-27 11:42:08,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 150 transitions, 1151 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-08-27 11:42:08,662 INFO L231 Difference]: Finished difference. Result has 114 places, 60 transitions, 496 flow [2023-08-27 11:42:08,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=496, PETRI_PLACES=114, PETRI_TRANSITIONS=60} [2023-08-27 11:42:08,663 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 56 predicate places. [2023-08-27 11:42:08,663 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 60 transitions, 496 flow [2023-08-27 11:42:08,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.375) internal successors, (931), 8 states have internal predecessors, (931), 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 11:42:08,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:08,663 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] [2023-08-27 11:42:08,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 11:42:08,663 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:08,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash -874589066, now seen corresponding path program 1 times [2023-08-27 11:42:08,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:08,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047842911] [2023-08-27 11:42:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:08,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:08,736 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 11:42:08,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:08,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047842911] [2023-08-27 11:42:08,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047842911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:08,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:08,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:42:08,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378453210] [2023-08-27 11:42:08,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:08,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:08,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:08,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:08,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:08,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 291 [2023-08-27 11:42:08,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 60 transitions, 496 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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 11:42:08,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:08,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 291 [2023-08-27 11:42:08,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:08,823 INFO L124 PetriNetUnfolderBase]: 269/568 cut-off events. [2023-08-27 11:42:08,824 INFO L125 PetriNetUnfolderBase]: For 3005/3005 co-relation queries the response was YES. [2023-08-27 11:42:08,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 568 events. 269/568 cut-off events. For 3005/3005 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2568 event pairs, 77 based on Foata normal form. 75/643 useless extension candidates. Maximal degree in co-relation 2101. Up to 342 conditions per place. [2023-08-27 11:42:08,827 INFO L140 encePairwiseOnDemand]: 281/291 looper letters, 45 selfloop transitions, 12 changer transitions 2/63 dead transitions. [2023-08-27 11:42:08,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 63 transitions, 617 flow [2023-08-27 11:42:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-27 11:42:08,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581901489117984 [2023-08-27 11:42:08,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-27 11:42:08,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-27 11:42:08,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:08,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-27 11:42:08,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 11:42:08,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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 11:42:08,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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 11:42:08,832 INFO L175 Difference]: Start difference. First operand has 114 places, 60 transitions, 496 flow. Second operand 3 states and 400 transitions. [2023-08-27 11:42:08,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 63 transitions, 617 flow [2023-08-27 11:42:08,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 63 transitions, 532 flow, removed 14 selfloop flow, removed 15 redundant places. [2023-08-27 11:42:08,838 INFO L231 Difference]: Finished difference. Result has 85 places, 49 transitions, 346 flow [2023-08-27 11:42:08,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=85, PETRI_TRANSITIONS=49} [2023-08-27 11:42:08,838 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2023-08-27 11:42:08,838 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 49 transitions, 346 flow [2023-08-27 11:42:08,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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 11:42:08,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:08,839 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] [2023-08-27 11:42:08,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 11:42:08,839 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:08,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:08,839 INFO L85 PathProgramCache]: Analyzing trace with hash 621173259, now seen corresponding path program 1 times [2023-08-27 11:42:08,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:08,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895345915] [2023-08-27 11:42:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:08,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:42:08,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:08,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895345915] [2023-08-27 11:42:08,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895345915] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:42:08,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903697554] [2023-08-27 11:42:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:08,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:42:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:42:08,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:42:08,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 11:42:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:09,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 11:42:09,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:42:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:42:09,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:42:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:42:09,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903697554] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:42:09,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:42:09,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-27 11:42:09,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535830598] [2023-08-27 11:42:09,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:42:09,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 11:42:09,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 11:42:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-27 11:42:09,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 291 [2023-08-27 11:42:09,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 49 transitions, 346 flow. Second operand has 16 states, 16 states have (on average 117.125) internal successors, (1874), 16 states have internal predecessors, (1874), 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 11:42:09,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:09,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 291 [2023-08-27 11:42:09,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:09,400 INFO L124 PetriNetUnfolderBase]: 277/609 cut-off events. [2023-08-27 11:42:09,400 INFO L125 PetriNetUnfolderBase]: For 4062/4062 co-relation queries the response was YES. [2023-08-27 11:42:09,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 609 events. 277/609 cut-off events. For 4062/4062 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2930 event pairs, 38 based on Foata normal form. 36/645 useless extension candidates. Maximal degree in co-relation 2227. Up to 116 conditions per place. [2023-08-27 11:42:09,403 INFO L140 encePairwiseOnDemand]: 279/291 looper letters, 76 selfloop transitions, 25 changer transitions 3/109 dead transitions. [2023-08-27 11:42:09,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 109 transitions, 840 flow [2023-08-27 11:42:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 11:42:09,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 11:42:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2147 transitions. [2023-08-27 11:42:09,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409889270714013 [2023-08-27 11:42:09,411 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2147 transitions. [2023-08-27 11:42:09,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2147 transitions. [2023-08-27 11:42:09,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:09,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2147 transitions. [2023-08-27 11:42:09,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 119.27777777777777) internal successors, (2147), 18 states have internal predecessors, (2147), 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 11:42:09,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 291.0) internal successors, (5529), 19 states have internal predecessors, (5529), 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 11:42:09,419 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 291.0) internal successors, (5529), 19 states have internal predecessors, (5529), 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 11:42:09,419 INFO L175 Difference]: Start difference. First operand has 85 places, 49 transitions, 346 flow. Second operand 18 states and 2147 transitions. [2023-08-27 11:42:09,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 109 transitions, 840 flow [2023-08-27 11:42:09,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 738 flow, removed 12 selfloop flow, removed 14 redundant places. [2023-08-27 11:42:09,424 INFO L231 Difference]: Finished difference. Result has 85 places, 50 transitions, 306 flow [2023-08-27 11:42:09,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=306, PETRI_PLACES=85, PETRI_TRANSITIONS=50} [2023-08-27 11:42:09,425 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2023-08-27 11:42:09,425 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 50 transitions, 306 flow [2023-08-27 11:42:09,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 117.125) internal successors, (1874), 16 states have internal predecessors, (1874), 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 11:42:09,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:09,426 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] [2023-08-27 11:42:09,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 11:42:09,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 11:42:09,632 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:09,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash 932604880, now seen corresponding path program 1 times [2023-08-27 11:42:09,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:09,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325510477] [2023-08-27 11:42:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:09,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:42:09,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:09,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325510477] [2023-08-27 11:42:09,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325510477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:09,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:09,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:42:09,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925143141] [2023-08-27 11:42:09,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:09,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:09,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:09,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:09,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:09,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 291 [2023-08-27 11:42:09,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 50 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 11:42:09,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:09,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 291 [2023-08-27 11:42:09,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:09,779 INFO L124 PetriNetUnfolderBase]: 290/645 cut-off events. [2023-08-27 11:42:09,780 INFO L125 PetriNetUnfolderBase]: For 1194/1194 co-relation queries the response was YES. [2023-08-27 11:42:09,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 645 events. 290/645 cut-off events. For 1194/1194 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3239 event pairs, 165 based on Foata normal form. 24/669 useless extension candidates. Maximal degree in co-relation 2212. Up to 432 conditions per place. [2023-08-27 11:42:09,782 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 51 selfloop transitions, 9 changer transitions 1/65 dead transitions. [2023-08-27 11:42:09,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 65 transitions, 516 flow [2023-08-27 11:42:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-08-27 11:42:09,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45017182130584193 [2023-08-27 11:42:09,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-08-27 11:42:09,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-08-27 11:42:09,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:09,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-08-27 11:42:09,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 11:42:09,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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 11:42:09,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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 11:42:09,785 INFO L175 Difference]: Start difference. First operand has 85 places, 50 transitions, 306 flow. Second operand 3 states and 393 transitions. [2023-08-27 11:42:09,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 65 transitions, 516 flow [2023-08-27 11:42:09,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 443 flow, removed 5 selfloop flow, removed 14 redundant places. [2023-08-27 11:42:09,788 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 301 flow [2023-08-27 11:42:09,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-08-27 11:42:09,788 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2023-08-27 11:42:09,788 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 301 flow [2023-08-27 11:42:09,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 11:42:09,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:09,789 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] [2023-08-27 11:42:09,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 11:42:09,789 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:09,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:09,789 INFO L85 PathProgramCache]: Analyzing trace with hash -526990580, now seen corresponding path program 2 times [2023-08-27 11:42:09,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:09,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063736417] [2023-08-27 11:42:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:09,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:09,869 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 11:42:09,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:09,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063736417] [2023-08-27 11:42:09,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063736417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:09,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:09,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:42:09,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487331100] [2023-08-27 11:42:09,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:09,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:42:09,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:09,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:42:09,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:42:09,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 291 [2023-08-27 11:42:09,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 116.5) internal successors, (932), 8 states have internal predecessors, (932), 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 11:42:09,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:09,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 291 [2023-08-27 11:42:09,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:10,061 INFO L124 PetriNetUnfolderBase]: 246/584 cut-off events. [2023-08-27 11:42:10,061 INFO L125 PetriNetUnfolderBase]: For 1020/1020 co-relation queries the response was YES. [2023-08-27 11:42:10,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2048 conditions, 584 events. 246/584 cut-off events. For 1020/1020 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2947 event pairs, 35 based on Foata normal form. 18/602 useless extension candidates. Maximal degree in co-relation 1972. Up to 143 conditions per place. [2023-08-27 11:42:10,063 INFO L140 encePairwiseOnDemand]: 281/291 looper letters, 46 selfloop transitions, 10 changer transitions 34/95 dead transitions. [2023-08-27 11:42:10,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 95 transitions, 701 flow [2023-08-27 11:42:10,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:42:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:42:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1211 transitions. [2023-08-27 11:42:10,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161512027491409 [2023-08-27 11:42:10,065 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1211 transitions. [2023-08-27 11:42:10,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1211 transitions. [2023-08-27 11:42:10,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:10,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1211 transitions. [2023-08-27 11:42:10,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.1) internal successors, (1211), 10 states have internal predecessors, (1211), 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 11:42:10,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 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 11:42:10,069 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 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 11:42:10,069 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 301 flow. Second operand 10 states and 1211 transitions. [2023-08-27 11:42:10,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 95 transitions, 701 flow [2023-08-27 11:42:10,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 95 transitions, 685 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:42:10,072 INFO L231 Difference]: Finished difference. Result has 82 places, 40 transitions, 226 flow [2023-08-27 11:42:10,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=226, PETRI_PLACES=82, PETRI_TRANSITIONS=40} [2023-08-27 11:42:10,072 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2023-08-27 11:42:10,072 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 40 transitions, 226 flow [2023-08-27 11:42:10,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.5) internal successors, (932), 8 states have internal predecessors, (932), 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 11:42:10,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:10,073 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] [2023-08-27 11:42:10,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 11:42:10,073 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:10,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:10,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1083943782, now seen corresponding path program 3 times [2023-08-27 11:42:10,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:10,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800430091] [2023-08-27 11:42:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:10,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:10,153 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 11:42:10,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:10,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800430091] [2023-08-27 11:42:10,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800430091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:10,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:10,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:42:10,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398868589] [2023-08-27 11:42:10,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:10,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:42:10,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:10,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:42:10,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:42:10,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 291 [2023-08-27 11:42:10,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 40 transitions, 226 flow. Second operand has 8 states, 8 states have (on average 116.5) internal successors, (932), 8 states have internal predecessors, (932), 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 11:42:10,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:10,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 291 [2023-08-27 11:42:10,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:10,314 INFO L124 PetriNetUnfolderBase]: 108/293 cut-off events. [2023-08-27 11:42:10,315 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2023-08-27 11:42:10,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 293 events. 108/293 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1193 event pairs, 25 based on Foata normal form. 9/301 useless extension candidates. Maximal degree in co-relation 956. Up to 107 conditions per place. [2023-08-27 11:42:10,315 INFO L140 encePairwiseOnDemand]: 282/291 looper letters, 24 selfloop transitions, 2 changer transitions 35/66 dead transitions. [2023-08-27 11:42:10,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 484 flow [2023-08-27 11:42:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:42:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:42:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1081 transitions. [2023-08-27 11:42:10,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4127529591447117 [2023-08-27 11:42:10,317 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1081 transitions. [2023-08-27 11:42:10,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1081 transitions. [2023-08-27 11:42:10,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:10,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1081 transitions. [2023-08-27 11:42:10,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.11111111111111) internal successors, (1081), 9 states have internal predecessors, (1081), 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 11:42:10,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 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 11:42:10,319 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 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 11:42:10,319 INFO L175 Difference]: Start difference. First operand has 82 places, 40 transitions, 226 flow. Second operand 9 states and 1081 transitions. [2023-08-27 11:42:10,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 484 flow [2023-08-27 11:42:10,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 437 flow, removed 3 selfloop flow, removed 12 redundant places. [2023-08-27 11:42:10,321 INFO L231 Difference]: Finished difference. Result has 67 places, 29 transitions, 135 flow [2023-08-27 11:42:10,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=135, PETRI_PLACES=67, PETRI_TRANSITIONS=29} [2023-08-27 11:42:10,321 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2023-08-27 11:42:10,322 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 29 transitions, 135 flow [2023-08-27 11:42:10,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.5) internal successors, (932), 8 states have internal predecessors, (932), 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 11:42:10,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:10,322 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] [2023-08-27 11:42:10,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 11:42:10,322 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:42:10,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:10,322 INFO L85 PathProgramCache]: Analyzing trace with hash 426075608, now seen corresponding path program 1 times [2023-08-27 11:42:10,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:10,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253940011] [2023-08-27 11:42:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:10,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:10,400 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 11:42:10,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:10,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253940011] [2023-08-27 11:42:10,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253940011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:10,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:10,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:42:10,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026821229] [2023-08-27 11:42:10,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:10,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:42:10,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:10,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:42:10,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:42:10,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 291 [2023-08-27 11:42:10,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 29 transitions, 135 flow. Second operand has 8 states, 8 states have (on average 116.5) internal successors, (932), 8 states have internal predecessors, (932), 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 11:42:10,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:10,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 291 [2023-08-27 11:42:10,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:10,516 INFO L124 PetriNetUnfolderBase]: 53/151 cut-off events. [2023-08-27 11:42:10,516 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2023-08-27 11:42:10,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 151 events. 53/151 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 429 event pairs, 17 based on Foata normal form. 9/159 useless extension candidates. Maximal degree in co-relation 430. Up to 63 conditions per place. [2023-08-27 11:42:10,516 INFO L140 encePairwiseOnDemand]: 282/291 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2023-08-27 11:42:10,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 43 transitions, 274 flow [2023-08-27 11:42:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:42:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:42:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1062 transitions. [2023-08-27 11:42:10,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054982817869416 [2023-08-27 11:42:10,518 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1062 transitions. [2023-08-27 11:42:10,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1062 transitions. [2023-08-27 11:42:10,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:10,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1062 transitions. [2023-08-27 11:42:10,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.0) internal successors, (1062), 9 states have internal predecessors, (1062), 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 11:42:10,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 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 11:42:10,521 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 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 11:42:10,521 INFO L175 Difference]: Start difference. First operand has 67 places, 29 transitions, 135 flow. Second operand 9 states and 1062 transitions. [2023-08-27 11:42:10,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 43 transitions, 274 flow [2023-08-27 11:42:10,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 254 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-08-27 11:42:10,523 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-27 11:42:10,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-27 11:42:10,523 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -9 predicate places. [2023-08-27 11:42:10,523 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-27 11:42:10,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.5) internal successors, (932), 8 states have internal predecessors, (932), 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 11:42:10,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-08-27 11:42:10,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-27 11:42:10,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (14 of 17 remaining) [2023-08-27 11:42:10,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-27 11:42:10,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-27 11:42:10,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-27 11:42:10,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-27 11:42:10,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-27 11:42:10,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-27 11:42:10,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-27 11:42:10,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-27 11:42:10,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-27 11:42:10,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-27 11:42:10,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-27 11:42:10,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-27 11:42:10,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-27 11:42:10,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-27 11:42:10,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 11:42:10,525 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:10,526 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 (1/2) [2023-08-27 11:42:10,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 163 transitions, 344 flow [2023-08-27 11:42:10,546 INFO L124 PetriNetUnfolderBase]: 40/286 cut-off events. [2023-08-27 11:42:10,546 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:42:10,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 286 events. 40/286 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 891 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 170. Up to 9 conditions per place. [2023-08-27 11:42:10,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 163 transitions, 344 flow [2023-08-27 11:42:10,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 163 transitions, 344 flow [2023-08-27 11:42:10,549 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:42:10,549 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 163 transitions, 344 flow [2023-08-27 11:42:10,549 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 163 transitions, 344 flow [2023-08-27 11:42:10,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 163 transitions, 344 flow [2023-08-27 11:42:10,567 INFO L124 PetriNetUnfolderBase]: 40/286 cut-off events. [2023-08-27 11:42:10,567 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:42:10,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 286 events. 40/286 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 891 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 170. Up to 9 conditions per place. [2023-08-27 11:42:10,574 INFO L119 LiptonReduction]: Number of co-enabled transitions 11592 [2023-08-27 11:42:12,751 INFO L134 LiptonReduction]: Checked pairs total: 28186 [2023-08-27 11:42:12,751 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-27 11:42:12,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:42:12,753 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;@4a157085, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:42:12,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:42:12,758 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:42:12,758 INFO L124 PetriNetUnfolderBase]: 19/78 cut-off events. [2023-08-27 11:42:12,758 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 11:42:12,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:12,758 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 11:42:12,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:42:12,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:12,758 INFO L85 PathProgramCache]: Analyzing trace with hash 472627585, now seen corresponding path program 1 times [2023-08-27 11:42:12,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:12,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695730927] [2023-08-27 11:42:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:12,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:42:12,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:42:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:42:12,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:42:12,778 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:42:12,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:42:12,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 11:42:12,778 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:42:12,779 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:42:12,779 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:42:12,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 11:42:12,795 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 11:42:12,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 201 transitions, 432 flow [2023-08-27 11:42:12,830 INFO L124 PetriNetUnfolderBase]: 62/445 cut-off events. [2023-08-27 11:42:12,830 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:42:12,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 445 events. 62/445 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1556 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 294. Up to 16 conditions per place. [2023-08-27 11:42:12,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 201 transitions, 432 flow [2023-08-27 11:42:12,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 201 transitions, 432 flow [2023-08-27 11:42:12,836 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:42:12,836 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 201 transitions, 432 flow [2023-08-27 11:42:12,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 201 transitions, 432 flow [2023-08-27 11:42:12,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 201 transitions, 432 flow [2023-08-27 11:42:12,889 INFO L124 PetriNetUnfolderBase]: 62/445 cut-off events. [2023-08-27 11:42:12,890 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:42:12,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 445 events. 62/445 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1556 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 294. Up to 16 conditions per place. [2023-08-27 11:42:12,905 INFO L119 LiptonReduction]: Number of co-enabled transitions 21600 [2023-08-27 11:42:15,216 INFO L134 LiptonReduction]: Checked pairs total: 46643 [2023-08-27 11:42:15,216 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-27 11:42:15,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:42:15,219 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;@4a157085, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:42:15,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 11:42:15,220 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:42:15,220 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-27 11:42:15,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:42:15,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:15,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:42:15,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:42:15,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1376631463, now seen corresponding path program 1 times [2023-08-27 11:42:15,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:15,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703603832] [2023-08-27 11:42:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:15,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:15,244 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 11:42:15,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:15,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703603832] [2023-08-27 11:42:15,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703603832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:15,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:15,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:42:15,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672393661] [2023-08-27 11:42:15,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:15,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:15,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:15,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:15,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:15,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 357 [2023-08-27 11:42:15,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 92 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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 11:42:15,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:15,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 357 [2023-08-27 11:42:15,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:23,355 INFO L124 PetriNetUnfolderBase]: 109892/156083 cut-off events. [2023-08-27 11:42:23,355 INFO L125 PetriNetUnfolderBase]: For 2273/2273 co-relation queries the response was YES. [2023-08-27 11:42:23,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308937 conditions, 156083 events. 109892/156083 cut-off events. For 2273/2273 co-relation queries the response was YES. Maximal size of possible extension queue 4357. Compared 1180035 event pairs, 69652 based on Foata normal form. 17032/119581 useless extension candidates. Maximal degree in co-relation 26615. Up to 151291 conditions per place. [2023-08-27 11:42:24,083 INFO L140 encePairwiseOnDemand]: 332/357 looper letters, 75 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-27 11:42:24,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 87 transitions, 358 flow [2023-08-27 11:42:24,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-08-27 11:42:24,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5499533146591971 [2023-08-27 11:42:24,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-08-27 11:42:24,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-08-27 11:42:24,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:24,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-08-27 11:42:24,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 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 11:42:24,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 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 11:42:24,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 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 11:42:24,087 INFO L175 Difference]: Start difference. First operand has 75 places, 92 transitions, 214 flow. Second operand 3 states and 589 transitions. [2023-08-27 11:42:24,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 87 transitions, 358 flow [2023-08-27 11:42:24,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 87 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:42:24,090 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 190 flow [2023-08-27 11:42:24,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-08-27 11:42:24,090 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2023-08-27 11:42:24,090 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 190 flow [2023-08-27 11:42:24,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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 11:42:24,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:24,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:24,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 11:42:24,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:42:24,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash 99380251, now seen corresponding path program 1 times [2023-08-27 11:42:24,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:24,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127795476] [2023-08-27 11:42:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:24,112 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 11:42:24,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:24,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127795476] [2023-08-27 11:42:24,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127795476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:24,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:24,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:42:24,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759473264] [2023-08-27 11:42:24,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:24,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:24,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:24,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 357 [2023-08-27 11:42:24,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 11:42:24,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:24,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 357 [2023-08-27 11:42:24,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:34,143 INFO L124 PetriNetUnfolderBase]: 135046/194965 cut-off events. [2023-08-27 11:42:34,143 INFO L125 PetriNetUnfolderBase]: For 10231/10231 co-relation queries the response was YES. [2023-08-27 11:42:34,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402752 conditions, 194965 events. 135046/194965 cut-off events. For 10231/10231 co-relation queries the response was YES. Maximal size of possible extension queue 6173. Compared 1564674 event pairs, 57352 based on Foata normal form. 0/136484 useless extension candidates. Maximal degree in co-relation 402657. Up to 135661 conditions per place. [2023-08-27 11:42:34,904 INFO L140 encePairwiseOnDemand]: 338/357 looper letters, 107 selfloop transitions, 13 changer transitions 0/129 dead transitions. [2023-08-27 11:42:34,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 129 transitions, 574 flow [2023-08-27 11:42:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-08-27 11:42:34,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5499533146591971 [2023-08-27 11:42:34,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-08-27 11:42:34,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-08-27 11:42:34,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:34,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-08-27 11:42:34,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 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 11:42:34,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 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 11:42:34,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 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 11:42:34,907 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 190 flow. Second operand 3 states and 589 transitions. [2023-08-27 11:42:34,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 129 transitions, 574 flow [2023-08-27 11:42:34,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 129 transitions, 571 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:42:34,921 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 300 flow [2023-08-27 11:42:34,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2023-08-27 11:42:34,922 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2023-08-27 11:42:34,922 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 300 flow [2023-08-27 11:42:34,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 11:42:34,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:34,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:34,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 11:42:34,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:42:34,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:34,923 INFO L85 PathProgramCache]: Analyzing trace with hash 99380185, now seen corresponding path program 1 times [2023-08-27 11:42:34,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:34,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40008649] [2023-08-27 11:42:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:34,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:34,942 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 11:42:34,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:34,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40008649] [2023-08-27 11:42:34,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40008649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:34,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:34,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:42:34,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037675326] [2023-08-27 11:42:34,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:34,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:34,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:34,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:34,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:34,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 357 [2023-08-27 11:42:34,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 11:42:34,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:34,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 357 [2023-08-27 11:42:34,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:46,051 INFO L124 PetriNetUnfolderBase]: 141294/206488 cut-off events. [2023-08-27 11:42:46,052 INFO L125 PetriNetUnfolderBase]: For 72672/74450 co-relation queries the response was YES. [2023-08-27 11:42:46,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503753 conditions, 206488 events. 141294/206488 cut-off events. For 72672/74450 co-relation queries the response was YES. Maximal size of possible extension queue 6746. Compared 1708112 event pairs, 49797 based on Foata normal form. 4688/187746 useless extension candidates. Maximal degree in co-relation 263917. Up to 154419 conditions per place. [2023-08-27 11:42:47,296 INFO L140 encePairwiseOnDemand]: 338/357 looper letters, 119 selfloop transitions, 16 changer transitions 0/144 dead transitions. [2023-08-27 11:42:47,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 144 transitions, 755 flow [2023-08-27 11:42:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:47,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-08-27 11:42:47,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5499533146591971 [2023-08-27 11:42:47,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-08-27 11:42:47,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-08-27 11:42:47,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:47,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-08-27 11:42:47,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 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 11:42:47,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 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 11:42:47,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 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 11:42:47,299 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 300 flow. Second operand 3 states and 589 transitions. [2023-08-27 11:42:47,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 144 transitions, 755 flow [2023-08-27 11:42:47,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 144 transitions, 723 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:42:47,738 INFO L231 Difference]: Finished difference. Result has 83 places, 100 transitions, 446 flow [2023-08-27 11:42:47,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=83, PETRI_TRANSITIONS=100} [2023-08-27 11:42:47,738 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2023-08-27 11:42:47,738 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 100 transitions, 446 flow [2023-08-27 11:42:47,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 11:42:47,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:47,738 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:42:47,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 11:42:47,739 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:42:47,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:47,739 INFO L85 PathProgramCache]: Analyzing trace with hash -839130232, now seen corresponding path program 1 times [2023-08-27 11:42:47,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:47,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118256681] [2023-08-27 11:42:47,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:47,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:47,770 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 11:42:47,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:47,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118256681] [2023-08-27 11:42:47,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118256681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:42:47,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918325338] [2023-08-27 11:42:47,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:47,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:42:47,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:42:47,776 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:42:47,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 11:42:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:47,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 11:42:47,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:42:47,909 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 11:42:47,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:42:47,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918325338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:47,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:42:47,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 11:42:47,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455413465] [2023-08-27 11:42:47,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:47,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:42:47,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:47,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:42:47,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:42:47,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 357 [2023-08-27 11:42:47,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 100 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 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 11:42:47,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:47,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 357 [2023-08-27 11:42:47,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:57,491 INFO L124 PetriNetUnfolderBase]: 130410/189785 cut-off events. [2023-08-27 11:42:57,492 INFO L125 PetriNetUnfolderBase]: For 189836/194413 co-relation queries the response was YES. [2023-08-27 11:42:57,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508328 conditions, 189785 events. 130410/189785 cut-off events. For 189836/194413 co-relation queries the response was YES. Maximal size of possible extension queue 6312. Compared 1626802 event pairs, 22266 based on Foata normal form. 352/169815 useless extension candidates. Maximal degree in co-relation 173920. Up to 137715 conditions per place. [2023-08-27 11:42:58,767 INFO L140 encePairwiseOnDemand]: 353/357 looper letters, 157 selfloop transitions, 3 changer transitions 0/173 dead transitions. [2023-08-27 11:42:58,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 173 transitions, 1108 flow [2023-08-27 11:42:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:42:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:42:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 757 transitions. [2023-08-27 11:42:58,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301120448179272 [2023-08-27 11:42:58,769 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 757 transitions. [2023-08-27 11:42:58,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 757 transitions. [2023-08-27 11:42:58,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:58,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 757 transitions. [2023-08-27 11:42:58,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 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 11:42:58,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 357.0) internal successors, (1785), 5 states have internal predecessors, (1785), 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 11:42:58,771 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 357.0) internal successors, (1785), 5 states have internal predecessors, (1785), 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 11:42:58,771 INFO L175 Difference]: Start difference. First operand has 83 places, 100 transitions, 446 flow. Second operand 4 states and 757 transitions. [2023-08-27 11:42:58,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 173 transitions, 1108 flow [2023-08-27 11:43:04,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 173 transitions, 1046 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:43:04,088 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 416 flow [2023-08-27 11:43:04,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=416, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2023-08-27 11:43:04,089 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2023-08-27 11:43:04,089 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 416 flow [2023-08-27 11:43:04,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 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 11:43:04,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:04,090 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:43:04,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 11:43:04,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 11:43:04,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:43:04,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash -839130231, now seen corresponding path program 1 times [2023-08-27 11:43:04,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:04,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587402513] [2023-08-27 11:43:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:04,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:04,330 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 11:43:04,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:04,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587402513] [2023-08-27 11:43:04,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587402513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:04,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:04,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:43:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897127784] [2023-08-27 11:43:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:04,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:43:04,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:43:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:43:04,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 357 [2023-08-27 11:43:04,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 11:43:04,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:04,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 357 [2023-08-27 11:43:04,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:16,283 INFO L124 PetriNetUnfolderBase]: 121103/175682 cut-off events. [2023-08-27 11:43:16,283 INFO L125 PetriNetUnfolderBase]: For 100323/102834 co-relation queries the response was YES. [2023-08-27 11:43:16,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456657 conditions, 175682 events. 121103/175682 cut-off events. For 100323/102834 co-relation queries the response was YES. Maximal size of possible extension queue 5736. Compared 1478722 event pairs, 13466 based on Foata normal form. 374/148206 useless extension candidates. Maximal degree in co-relation 115144. Up to 150996 conditions per place. [2023-08-27 11:43:17,096 INFO L140 encePairwiseOnDemand]: 353/357 looper letters, 144 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2023-08-27 11:43:17,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 161 transitions, 986 flow [2023-08-27 11:43:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:43:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:43:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2023-08-27 11:43:17,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443510737628384 [2023-08-27 11:43:17,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2023-08-27 11:43:17,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2023-08-27 11:43:17,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:17,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2023-08-27 11:43:17,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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 11:43:17,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 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 11:43:17,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 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 11:43:17,099 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 416 flow. Second operand 3 states and 583 transitions. [2023-08-27 11:43:17,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 161 transitions, 986 flow [2023-08-27 11:43:17,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 161 transitions, 982 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:43:17,113 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 424 flow [2023-08-27 11:43:17,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2023-08-27 11:43:17,114 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2023-08-27 11:43:17,114 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 424 flow [2023-08-27 11:43:17,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 11:43:17,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:17,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:17,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-27 11:43:17,114 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:43:17,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:17,115 INFO L85 PathProgramCache]: Analyzing trace with hash -840895996, now seen corresponding path program 1 times [2023-08-27 11:43:17,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:17,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401132343] [2023-08-27 11:43:17,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:17,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:17,141 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 11:43:17,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:17,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401132343] [2023-08-27 11:43:17,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401132343] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:43:17,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602540017] [2023-08-27 11:43:17,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:17,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:17,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:43:17,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:43:17,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 11:43:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:17,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:43:17,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:43:17,488 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 11:43:17,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:43:17,507 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 11:43:17,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602540017] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:43:17,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:43:17,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:43:17,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998752469] [2023-08-27 11:43:17,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:43:17,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:43:17,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:17,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:43:17,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:43:17,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 357 [2023-08-27 11:43:17,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 163.42857142857142) internal successors, (1144), 7 states have internal predecessors, (1144), 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 11:43:17,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:17,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 357 [2023-08-27 11:43:17,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:19,820 INFO L124 PetriNetUnfolderBase]: 24426/38242 cut-off events. [2023-08-27 11:43:19,820 INFO L125 PetriNetUnfolderBase]: For 54440/54848 co-relation queries the response was YES. [2023-08-27 11:43:19,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116519 conditions, 38242 events. 24426/38242 cut-off events. For 54440/54848 co-relation queries the response was YES. Maximal size of possible extension queue 1698. Compared 303583 event pairs, 4786 based on Foata normal form. 4024/39243 useless extension candidates. Maximal degree in co-relation 21914. Up to 25460 conditions per place. [2023-08-27 11:43:19,990 INFO L140 encePairwiseOnDemand]: 354/357 looper letters, 182 selfloop transitions, 4 changer transitions 0/198 dead transitions. [2023-08-27 11:43:19,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 198 transitions, 1257 flow [2023-08-27 11:43:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:43:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:43:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1092 transitions. [2023-08-27 11:43:19,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-08-27 11:43:19,991 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1092 transitions. [2023-08-27 11:43:19,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1092 transitions. [2023-08-27 11:43:19,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:19,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1092 transitions. [2023-08-27 11:43:19,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 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 11:43:19,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 357.0) internal successors, (2499), 7 states have internal predecessors, (2499), 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 11:43:19,999 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 357.0) internal successors, (2499), 7 states have internal predecessors, (2499), 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 11:43:19,999 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 424 flow. Second operand 6 states and 1092 transitions. [2023-08-27 11:43:19,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 198 transitions, 1257 flow [2023-08-27 11:43:20,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 198 transitions, 1244 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 11:43:20,014 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 382 flow [2023-08-27 11:43:20,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2023-08-27 11:43:20,014 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2023-08-27 11:43:20,014 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 382 flow [2023-08-27 11:43:20,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.42857142857142) internal successors, (1144), 7 states have internal predecessors, (1144), 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 11:43:20,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:20,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:20,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 11:43:20,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 11:43:20,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:43:20,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:20,222 INFO L85 PathProgramCache]: Analyzing trace with hash 633113826, now seen corresponding path program 1 times [2023-08-27 11:43:20,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:20,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861809212] [2023-08-27 11:43:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:20,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:20,256 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 11:43:20,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:20,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861809212] [2023-08-27 11:43:20,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861809212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:20,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:20,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:43:20,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458907598] [2023-08-27 11:43:20,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:20,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:43:20,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:20,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:43:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:43:20,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 357 [2023-08-27 11:43:20,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 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 11:43:20,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:20,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 357 [2023-08-27 11:43:20,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:23,102 INFO L124 PetriNetUnfolderBase]: 29348/44215 cut-off events. [2023-08-27 11:43:23,103 INFO L125 PetriNetUnfolderBase]: For 49211/49718 co-relation queries the response was YES. [2023-08-27 11:43:23,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133885 conditions, 44215 events. 29348/44215 cut-off events. For 49211/49718 co-relation queries the response was YES. Maximal size of possible extension queue 1931. Compared 337109 event pairs, 5368 based on Foata normal form. 141/41620 useless extension candidates. Maximal degree in co-relation 133766. Up to 26473 conditions per place. [2023-08-27 11:43:23,296 INFO L140 encePairwiseOnDemand]: 338/357 looper letters, 169 selfloop transitions, 37 changer transitions 0/214 dead transitions. [2023-08-27 11:43:23,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 214 transitions, 1351 flow [2023-08-27 11:43:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:43:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:43:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1219 transitions. [2023-08-27 11:43:23,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48779511804721887 [2023-08-27 11:43:23,299 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1219 transitions. [2023-08-27 11:43:23,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1219 transitions. [2023-08-27 11:43:23,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:23,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1219 transitions. [2023-08-27 11:43:23,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.14285714285714) internal successors, (1219), 7 states have internal predecessors, (1219), 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 11:43:23,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 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 11:43:23,303 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 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 11:43:23,303 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 382 flow. Second operand 7 states and 1219 transitions. [2023-08-27 11:43:23,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 214 transitions, 1351 flow [2023-08-27 11:43:23,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 214 transitions, 1316 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-27 11:43:23,314 INFO L231 Difference]: Finished difference. Result has 80 places, 108 transitions, 679 flow [2023-08-27 11:43:23,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=679, PETRI_PLACES=80, PETRI_TRANSITIONS=108} [2023-08-27 11:43:23,314 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-08-27 11:43:23,315 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 108 transitions, 679 flow [2023-08-27 11:43:23,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 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 11:43:23,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:23,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:23,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 11:43:23,315 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:43:23,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash 633113825, now seen corresponding path program 1 times [2023-08-27 11:43:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:23,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133096309] [2023-08-27 11:43:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:23,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:23,351 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 11:43:23,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:23,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133096309] [2023-08-27 11:43:23,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133096309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:23,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:23,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:43:23,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68218772] [2023-08-27 11:43:23,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:23,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:43:23,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:23,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:43:23,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:43:23,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 357 [2023-08-27 11:43:23,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 108 transitions, 679 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 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 11:43:23,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:23,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 357 [2023-08-27 11:43:23,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:26,328 INFO L124 PetriNetUnfolderBase]: 29504/45337 cut-off events. [2023-08-27 11:43:26,329 INFO L125 PetriNetUnfolderBase]: For 85453/86380 co-relation queries the response was YES. [2023-08-27 11:43:26,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148640 conditions, 45337 events. 29504/45337 cut-off events. For 85453/86380 co-relation queries the response was YES. Maximal size of possible extension queue 2042. Compared 358965 event pairs, 7089 based on Foata normal form. 1440/46729 useless extension candidates. Maximal degree in co-relation 148535. Up to 27429 conditions per place. [2023-08-27 11:43:26,551 INFO L140 encePairwiseOnDemand]: 338/357 looper letters, 191 selfloop transitions, 51 changer transitions 0/250 dead transitions. [2023-08-27 11:43:26,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 250 transitions, 1874 flow [2023-08-27 11:43:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:43:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:43:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1074 transitions. [2023-08-27 11:43:26,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014005602240896 [2023-08-27 11:43:26,553 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1074 transitions. [2023-08-27 11:43:26,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1074 transitions. [2023-08-27 11:43:26,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:26,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1074 transitions. [2023-08-27 11:43:26,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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 11:43:26,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 357.0) internal successors, (2499), 7 states have internal predecessors, (2499), 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 11:43:26,555 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 357.0) internal successors, (2499), 7 states have internal predecessors, (2499), 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 11:43:26,555 INFO L175 Difference]: Start difference. First operand has 80 places, 108 transitions, 679 flow. Second operand 6 states and 1074 transitions. [2023-08-27 11:43:26,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 250 transitions, 1874 flow [2023-08-27 11:43:26,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 250 transitions, 1874 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:43:26,698 INFO L231 Difference]: Finished difference. Result has 88 places, 138 transitions, 1131 flow [2023-08-27 11:43:26,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1131, PETRI_PLACES=88, PETRI_TRANSITIONS=138} [2023-08-27 11:43:26,699 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2023-08-27 11:43:26,699 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 138 transitions, 1131 flow [2023-08-27 11:43:26,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 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 11:43:26,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:26,699 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:26,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-27 11:43:26,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:43:26,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:26,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1306507901, now seen corresponding path program 1 times [2023-08-27 11:43:26,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:26,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728486181] [2023-08-27 11:43:26,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:26,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:26,740 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 11:43:26,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728486181] [2023-08-27 11:43:26,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728486181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:26,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:26,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:43:26,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866223746] [2023-08-27 11:43:26,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:26,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:43:26,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:43:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:43:26,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 357 [2023-08-27 11:43:26,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 138 transitions, 1131 flow. Second operand has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 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 11:43:26,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:26,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 357 [2023-08-27 11:43:26,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:30,421 INFO L124 PetriNetUnfolderBase]: 35351/53536 cut-off events. [2023-08-27 11:43:30,421 INFO L125 PetriNetUnfolderBase]: For 164654/165230 co-relation queries the response was YES. [2023-08-27 11:43:30,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193885 conditions, 53536 events. 35351/53536 cut-off events. For 164654/165230 co-relation queries the response was YES. Maximal size of possible extension queue 2410. Compared 419765 event pairs, 7540 based on Foata normal form. 1245/54769 useless extension candidates. Maximal degree in co-relation 193770. Up to 32898 conditions per place.