/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_07-cond_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:25:10,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:25:10,472 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 11:25:10,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:25:10,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:25:10,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:25:10,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:25:10,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:25:10,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:25:10,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:25:10,503 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:25:10,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:25:10,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:25:10,505 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:25:10,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:25:10,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:25:10,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:25:10,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:25:10,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:25:10,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:25:10,506 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:25:10,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:25:10,506 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:25:10,506 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:25:10,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:25:10,507 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:25:10,507 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:25:10,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:25:10,507 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:25:10,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:25:10,508 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:25:10,508 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:25:10,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:25:10,509 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:25:10,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:25:10,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:25:10,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:25:10,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:25:10,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:25:10,778 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:25:10,778 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:25:10,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-27 11:25:11,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:25:11,889 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:25:11,890 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-27 11:25:11,910 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73dcaf205/dda071eee8d24964a43803790fb94f01/FLAGff27a2194 [2023-08-27 11:25:11,920 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73dcaf205/dda071eee8d24964a43803790fb94f01 [2023-08-27 11:25:11,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:25:11,925 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:25:11,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:25:11,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:25:11,929 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:25:11,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:25:11" (1/1) ... [2023-08-27 11:25:11,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f01f5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:11, skipping insertion in model container [2023-08-27 11:25:11,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:25:11" (1/1) ... [2023-08-27 11:25:11,966 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:25:12,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:25:12,305 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:25:12,322 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [119] [2023-08-27 11:25:12,332 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-27 11:25:12,333 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-27 11:25:12,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:25:12,408 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:25:12,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12 WrapperNode [2023-08-27 11:25:12,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:25:12,409 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:25:12,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:25:12,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:25:12,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (1/1) ... [2023-08-27 11:25:12,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (1/1) ... [2023-08-27 11:25:12,464 INFO L138 Inliner]: procedures = 270, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2023-08-27 11:25:12,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:25:12,464 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:25:12,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:25:12,465 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:25:12,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (1/1) ... [2023-08-27 11:25:12,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (1/1) ... [2023-08-27 11:25:12,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (1/1) ... [2023-08-27 11:25:12,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (1/1) ... [2023-08-27 11:25:12,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (1/1) ... [2023-08-27 11:25:12,489 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (1/1) ... [2023-08-27 11:25:12,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (1/1) ... [2023-08-27 11:25:12,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (1/1) ... [2023-08-27 11:25:12,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:25:12,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:25:12,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:25:12,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:25:12,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (1/1) ... [2023-08-27 11:25:12,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:25:12,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:25:12,523 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 11:25:12,531 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 11:25:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:25:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:25:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:25:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:25:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:25:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:25:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:25:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:25:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:25:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:25:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:25:12,551 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 11:25:12,669 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:25:12,670 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:25:12,843 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:25:12,848 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:25:12,848 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-27 11:25:12,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:25:12 BoogieIcfgContainer [2023-08-27 11:25:12,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:25:12,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:25:12,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:25:12,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:25:12,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:25:11" (1/3) ... [2023-08-27 11:25:12,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecf6005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:25:12, skipping insertion in model container [2023-08-27 11:25:12,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:12" (2/3) ... [2023-08-27 11:25:12,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecf6005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:25:12, skipping insertion in model container [2023-08-27 11:25:12,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:25:12" (3/3) ... [2023-08-27 11:25:12,855 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-08-27 11:25:12,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:25:12,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-27 11:25:12,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:25:12,900 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:25:12,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 147 transitions, 302 flow [2023-08-27 11:25:13,008 INFO L124 PetriNetUnfolderBase]: 25/199 cut-off events. [2023-08-27 11:25:13,008 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:25:13,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 199 events. 25/199 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 496 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 97. Up to 6 conditions per place. [2023-08-27 11:25:13,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 147 transitions, 302 flow [2023-08-27 11:25:13,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 144 transitions, 296 flow [2023-08-27 11:25:13,023 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:25:13,032 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 144 transitions, 296 flow [2023-08-27 11:25:13,035 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 144 transitions, 296 flow [2023-08-27 11:25:13,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 144 transitions, 296 flow [2023-08-27 11:25:13,072 INFO L124 PetriNetUnfolderBase]: 24/196 cut-off events. [2023-08-27 11:25:13,073 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:25:13,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 196 events. 24/196 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 496 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 97. Up to 6 conditions per place. [2023-08-27 11:25:13,077 INFO L119 LiptonReduction]: Number of co-enabled transitions 4464 [2023-08-27 11:25:16,072 INFO L134 LiptonReduction]: Checked pairs total: 6988 [2023-08-27 11:25:16,072 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-27 11:25:16,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:25:16,084 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;@485f9729, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:25:16,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-27 11:25:16,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:25:16,086 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-27 11:25:16,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:25:16,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:16,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 11:25:16,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 11:25:16,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:16,090 INFO L85 PathProgramCache]: Analyzing trace with hash 18365, now seen corresponding path program 1 times [2023-08-27 11:25:16,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:16,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250653703] [2023-08-27 11:25:16,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:16,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:16,247 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 11:25:16,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:16,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250653703] [2023-08-27 11:25:16,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250653703] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:16,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:16,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:25:16,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024276272] [2023-08-27 11:25:16,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:16,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:25:16,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:16,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:25:16,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:25:16,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2023-08-27 11:25:16,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:16,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:16,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2023-08-27 11:25:16,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:16,401 INFO L124 PetriNetUnfolderBase]: 169/370 cut-off events. [2023-08-27 11:25:16,402 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:25:16,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 370 events. 169/370 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2011 event pairs, 0 based on Foata normal form. 14/249 useless extension candidates. Maximal degree in co-relation 701. Up to 342 conditions per place. [2023-08-27 11:25:16,407 INFO L140 encePairwiseOnDemand]: 274/291 looper letters, 42 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-27 11:25:16,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 188 flow [2023-08-27 11:25:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:25:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:25:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-08-27 11:25:16,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005727376861397 [2023-08-27 11:25:16,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-08-27 11:25:16,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-08-27 11:25:16,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:16,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-08-27 11:25:16,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:16,432 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 11:25:16,433 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 11:25:16,434 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 98 flow. Second operand 3 states and 437 transitions. [2023-08-27 11:25:16,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 188 flow [2023-08-27 11:25:16,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:25:16,438 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 88 flow [2023-08-27 11:25:16,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-08-27 11:25:16,441 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-08-27 11:25:16,441 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 88 flow [2023-08-27 11:25:16,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:16,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:16,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:25:16,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:25:16,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 11:25:16,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:16,443 INFO L85 PathProgramCache]: Analyzing trace with hash 545992597, now seen corresponding path program 1 times [2023-08-27 11:25:16,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:16,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264227557] [2023-08-27 11:25:16,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:16,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:16,507 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 11:25:16,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264227557] [2023-08-27 11:25:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264227557] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:25:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571508736] [2023-08-27 11:25:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:16,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:25:16,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:25:16,509 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 11:25:16,558 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 11:25:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:16,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:25:16,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:25:16,662 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 11:25:16,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:25:16,679 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 11:25:16,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571508736] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:25:16,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:25:16,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 11:25:16,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099846688] [2023-08-27 11:25:16,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:25:16,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:16,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:16,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:16,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:16,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2023-08-27 11:25:16,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:16,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:16,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2023-08-27 11:25:16,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:16,729 INFO L124 PetriNetUnfolderBase]: 24/68 cut-off events. [2023-08-27 11:25:16,729 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-27 11:25:16,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 68 events. 24/68 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 165 event pairs, 11 based on Foata normal form. 13/69 useless extension candidates. Maximal degree in co-relation 151. Up to 50 conditions per place. [2023-08-27 11:25:16,729 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 19 selfloop transitions, 2 changer transitions 8/31 dead transitions. [2023-08-27 11:25:16,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 131 flow [2023-08-27 11:25:16,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:25:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:25:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 529 transitions. [2023-08-27 11:25:16,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45446735395189003 [2023-08-27 11:25:16,731 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 529 transitions. [2023-08-27 11:25:16,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 529 transitions. [2023-08-27 11:25:16,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:16,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 529 transitions. [2023-08-27 11:25:16,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:16,735 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 11:25:16,738 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 11:25:16,739 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 88 flow. Second operand 4 states and 529 transitions. [2023-08-27 11:25:16,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 131 flow [2023-08-27 11:25:16,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 125 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:25:16,744 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 37 flow [2023-08-27 11:25:16,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=37, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-08-27 11:25:16,745 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -14 predicate places. [2023-08-27 11:25:16,745 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 37 flow [2023-08-27 11:25:16,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:16,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:16,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:25:16,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 11:25:16,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:25:16,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 11:25:16,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:16,953 INFO L85 PathProgramCache]: Analyzing trace with hash -254135270, now seen corresponding path program 1 times [2023-08-27 11:25:16,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:16,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006126592] [2023-08-27 11:25:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:16,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:17,018 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 11:25:17,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:17,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006126592] [2023-08-27 11:25:17,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006126592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:17,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:17,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:25:17,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860301618] [2023-08-27 11:25:17,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:17,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:25:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:17,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:25:17,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:25:17,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 291 [2023-08-27 11:25:17,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:17,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:17,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 291 [2023-08-27 11:25:17,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:17,035 INFO L124 PetriNetUnfolderBase]: 12/39 cut-off events. [2023-08-27 11:25:17,035 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:25:17,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 39 events. 12/39 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 4 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 72. Up to 21 conditions per place. [2023-08-27 11:25:17,035 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 10 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-08-27 11:25:17,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 63 flow [2023-08-27 11:25:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:25:17,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:25:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-27 11:25:17,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44902634593356244 [2023-08-27 11:25:17,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-27 11:25:17,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-27 11:25:17,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:17,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-27 11:25:17,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:17,039 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 11:25:17,039 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 11:25:17,039 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 37 flow. Second operand 3 states and 392 transitions. [2023-08-27 11:25:17,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 63 flow [2023-08-27 11:25:17,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 59 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:25:17,040 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 34 flow [2023-08-27 11:25:17,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-27 11:25:17,040 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -20 predicate places. [2023-08-27 11:25:17,040 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 34 flow [2023-08-27 11:25:17,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:17,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:17,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:17,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:25:17,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 11:25:17,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:17,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1081816945, now seen corresponding path program 1 times [2023-08-27 11:25:17,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:17,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626180078] [2023-08-27 11:25:17,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:17,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:17,121 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 11:25:17,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:17,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626180078] [2023-08-27 11:25:17,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626180078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:17,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:17,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:25:17,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364003502] [2023-08-27 11:25:17,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:17,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:25:17,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:17,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:25:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:25:17,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 291 [2023-08-27 11:25:17,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:17,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:17,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 291 [2023-08-27 11:25:17,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:17,145 INFO L124 PetriNetUnfolderBase]: 10/34 cut-off events. [2023-08-27 11:25:17,145 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:25:17,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 34 events. 10/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 4 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 64. Up to 15 conditions per place. [2023-08-27 11:25:17,145 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 9 selfloop transitions, 2 changer transitions 0/13 dead transitions. [2023-08-27 11:25:17,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 13 transitions, 59 flow [2023-08-27 11:25:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:25:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:25:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 516 transitions. [2023-08-27 11:25:17,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44329896907216493 [2023-08-27 11:25:17,146 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 516 transitions. [2023-08-27 11:25:17,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 516 transitions. [2023-08-27 11:25:17,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:17,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 516 transitions. [2023-08-27 11:25:17,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:17,149 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 11:25:17,150 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 11:25:17,150 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 34 flow. Second operand 4 states and 516 transitions. [2023-08-27 11:25:17,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 13 transitions, 59 flow [2023-08-27 11:25:17,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 55 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:25:17,151 INFO L231 Difference]: Finished difference. Result has 18 places, 11 transitions, 32 flow [2023-08-27 11:25:17,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=32, PETRI_PLACES=18, PETRI_TRANSITIONS=11} [2023-08-27 11:25:17,152 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -20 predicate places. [2023-08-27 11:25:17,152 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 32 flow [2023-08-27 11:25:17,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:17,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:17,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:17,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:25:17,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 11:25:17,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1081816958, now seen corresponding path program 1 times [2023-08-27 11:25:17,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:17,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534135262] [2023-08-27 11:25:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:17,237 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 11:25:17,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534135262] [2023-08-27 11:25:17,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534135262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:17,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:17,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:25:17,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229457124] [2023-08-27 11:25:17,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:17,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:25:17,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:17,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:25:17,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:25:17,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 291 [2023-08-27 11:25:17,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 32 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:17,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:17,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 291 [2023-08-27 11:25:17,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:17,254 INFO L124 PetriNetUnfolderBase]: 8/29 cut-off events. [2023-08-27 11:25:17,254 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:25:17,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 29 events. 8/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 4 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 53. Up to 15 conditions per place. [2023-08-27 11:25:17,254 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-27 11:25:17,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 55 flow [2023-08-27 11:25:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:25:17,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:25:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 515 transitions. [2023-08-27 11:25:17,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4424398625429553 [2023-08-27 11:25:17,258 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 515 transitions. [2023-08-27 11:25:17,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 515 transitions. [2023-08-27 11:25:17,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:17,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 515 transitions. [2023-08-27 11:25:17,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:17,261 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 11:25:17,261 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 11:25:17,261 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 32 flow. Second operand 4 states and 515 transitions. [2023-08-27 11:25:17,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 55 flow [2023-08-27 11:25:17,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:25:17,262 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-27 11:25:17,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-27 11:25:17,262 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -20 predicate places. [2023-08-27 11:25:17,262 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-27 11:25:17,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:17,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 15 remaining) [2023-08-27 11:25:17,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (13 of 15 remaining) [2023-08-27 11:25:17,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-08-27 11:25:17,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-08-27 11:25:17,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-08-27 11:25:17,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-08-27 11:25:17,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-08-27 11:25:17,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-08-27 11:25:17,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-08-27 11:25:17,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-08-27 11:25:17,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-08-27 11:25:17,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-08-27 11:25:17,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-08-27 11:25:17,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-08-27 11:25:17,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-08-27 11:25:17,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:25:17,266 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-27 11:25:17,267 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:25:17,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 147 transitions, 302 flow [2023-08-27 11:25:17,290 INFO L124 PetriNetUnfolderBase]: 25/199 cut-off events. [2023-08-27 11:25:17,291 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:25:17,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 199 events. 25/199 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 496 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 97. Up to 6 conditions per place. [2023-08-27 11:25:17,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 147 transitions, 302 flow [2023-08-27 11:25:17,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 138 transitions, 281 flow [2023-08-27 11:25:17,292 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:25:17,292 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 138 transitions, 281 flow [2023-08-27 11:25:17,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 138 transitions, 281 flow [2023-08-27 11:25:17,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 138 transitions, 281 flow [2023-08-27 11:25:17,305 INFO L124 PetriNetUnfolderBase]: 24/190 cut-off events. [2023-08-27 11:25:17,305 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:25:17,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 190 events. 24/190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 479 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 97. Up to 6 conditions per place. [2023-08-27 11:25:17,307 INFO L119 LiptonReduction]: Number of co-enabled transitions 4464 [2023-08-27 11:25:20,117 INFO L134 LiptonReduction]: Checked pairs total: 7315 [2023-08-27 11:25:20,117 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-27 11:25:20,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:25:20,119 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;@485f9729, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:25:20,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:25:20,121 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:25:20,121 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2023-08-27 11:25:20,121 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:25:20,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:20,122 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:25:20,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:25:20,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash -402316754, now seen corresponding path program 1 times [2023-08-27 11:25:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893392730] [2023-08-27 11:25:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:25:20,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:25:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:25:20,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:25:20,149 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:25:20,150 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:25:20,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:25:20,150 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:25:20,150 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:25:20,151 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:25:20,151 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:25:20,169 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 11:25:20,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:20,193 INFO L124 PetriNetUnfolderBase]: 43/326 cut-off events. [2023-08-27 11:25:20,194 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:25:20,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 326 events. 43/326 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1019 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 201. Up to 9 conditions per place. [2023-08-27 11:25:20,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:20,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:20,196 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:25:20,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:20,198 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:20,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:20,213 INFO L124 PetriNetUnfolderBase]: 43/326 cut-off events. [2023-08-27 11:25:20,213 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:25:20,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 326 events. 43/326 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1019 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 201. Up to 9 conditions per place. [2023-08-27 11:25:20,219 INFO L119 LiptonReduction]: Number of co-enabled transitions 12888 [2023-08-27 11:25:23,011 INFO L134 LiptonReduction]: Checked pairs total: 29922 [2023-08-27 11:25:23,011 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-27 11:25:23,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:25:23,013 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;@485f9729, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:25:23,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 11:25:23,015 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:25:23,015 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-27 11:25:23,015 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:25:23,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:23,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 11:25:23,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:23,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash 35164, now seen corresponding path program 1 times [2023-08-27 11:25:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:23,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108103411] [2023-08-27 11:25:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:23,046 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 11:25:23,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:23,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108103411] [2023-08-27 11:25:23,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108103411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:23,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:23,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:25:23,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222019683] [2023-08-27 11:25:23,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:23,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:25:23,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:23,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:25:23,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:25:23,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 347 [2023-08-27 11:25:23,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 73 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:23,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:23,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 347 [2023-08-27 11:25:23,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:23,710 INFO L124 PetriNetUnfolderBase]: 7074/11285 cut-off events. [2023-08-27 11:25:23,710 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-08-27 11:25:23,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22425 conditions, 11285 events. 7074/11285 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 72427 event pairs, 3234 based on Foata normal form. 503/7777 useless extension candidates. Maximal degree in co-relation 2410. Up to 11011 conditions per place. [2023-08-27 11:25:23,748 INFO L140 encePairwiseOnDemand]: 324/347 looper letters, 66 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-27 11:25:23,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 300 flow [2023-08-27 11:25:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:25:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:25:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-27 11:25:23,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350624399615754 [2023-08-27 11:25:23,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-27 11:25:23,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-27 11:25:23,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:23,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-27 11:25:23,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:23,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:23,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:23,753 INFO L175 Difference]: Start difference. First operand has 60 places, 73 transitions, 164 flow. Second operand 3 states and 557 transitions. [2023-08-27 11:25:23,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 300 flow [2023-08-27 11:25:23,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:25:23,755 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 154 flow [2023-08-27 11:25:23,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-08-27 11:25:23,755 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-08-27 11:25:23,755 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 154 flow [2023-08-27 11:25:23,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:23,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:23,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:25:23,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 11:25:23,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:23,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:23,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1895216332, now seen corresponding path program 1 times [2023-08-27 11:25:23,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:23,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001546717] [2023-08-27 11:25:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:23,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:23,777 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 11:25:23,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:23,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001546717] [2023-08-27 11:25:23,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001546717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:25:23,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298023210] [2023-08-27 11:25:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:23,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:25:23,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:25:23,779 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 11:25:23,789 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 11:25:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:23,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:25:23,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:25:23,853 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 11:25:23,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:25:23,864 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 11:25:23,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298023210] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:25:23,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:25:23,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 11:25:23,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194835632] [2023-08-27 11:25:23,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:25:23,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:23,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:23,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:23,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 347 [2023-08-27 11:25:23,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 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 11:25:23,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:23,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 347 [2023-08-27 11:25:23,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:24,085 INFO L124 PetriNetUnfolderBase]: 1498/2702 cut-off events. [2023-08-27 11:25:24,085 INFO L125 PetriNetUnfolderBase]: For 480/480 co-relation queries the response was YES. [2023-08-27 11:25:24,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6131 conditions, 2702 events. 1498/2702 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16223 event pairs, 0 based on Foata normal form. 240/2224 useless extension candidates. Maximal degree in co-relation 658. Up to 1290 conditions per place. [2023-08-27 11:25:24,101 INFO L140 encePairwiseOnDemand]: 339/347 looper letters, 103 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2023-08-27 11:25:24,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 111 transitions, 458 flow [2023-08-27 11:25:24,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:25:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:25:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1040 transitions. [2023-08-27 11:25:24,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49951969260326606 [2023-08-27 11:25:24,103 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1040 transitions. [2023-08-27 11:25:24,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1040 transitions. [2023-08-27 11:25:24,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:24,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1040 transitions. [2023-08-27 11:25:24,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.33333333333334) internal successors, (1040), 6 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 347.0) internal successors, (2429), 7 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,108 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 347.0) internal successors, (2429), 7 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,108 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 154 flow. Second operand 6 states and 1040 transitions. [2023-08-27 11:25:24,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 111 transitions, 458 flow [2023-08-27 11:25:24,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 111 transitions, 454 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 11:25:24,113 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 104 flow [2023-08-27 11:25:24,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=104, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-08-27 11:25:24,114 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -10 predicate places. [2023-08-27 11:25:24,114 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 104 flow [2023-08-27 11:25:24,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 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 11:25:24,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:24,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:24,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 11:25:24,320 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,SelfDestructingSolverStorable7 [2023-08-27 11:25:24,320 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:24,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1385555096, now seen corresponding path program 1 times [2023-08-27 11:25:24,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:24,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641253865] [2023-08-27 11:25:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:24,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:24,353 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 11:25:24,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:24,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641253865] [2023-08-27 11:25:24,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641253865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:24,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:24,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:25:24,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047118346] [2023-08-27 11:25:24,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:24,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:25:24,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:24,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:25:24,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:25:24,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 347 [2023-08-27 11:25:24,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:24,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 347 [2023-08-27 11:25:24,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:24,509 INFO L124 PetriNetUnfolderBase]: 1352/2239 cut-off events. [2023-08-27 11:25:24,510 INFO L125 PetriNetUnfolderBase]: For 691/691 co-relation queries the response was YES. [2023-08-27 11:25:24,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5350 conditions, 2239 events. 1352/2239 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12273 event pairs, 506 based on Foata normal form. 0/1643 useless extension candidates. Maximal degree in co-relation 4441. Up to 2046 conditions per place. [2023-08-27 11:25:24,519 INFO L140 encePairwiseOnDemand]: 340/347 looper letters, 45 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-08-27 11:25:24,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 243 flow [2023-08-27 11:25:24,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:25:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:25:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-27 11:25:24,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860710854947166 [2023-08-27 11:25:24,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-27 11:25:24,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-27 11:25:24,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:24,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-27 11:25:24,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,524 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 104 flow. Second operand 3 states and 506 transitions. [2023-08-27 11:25:24,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 243 flow [2023-08-27 11:25:24,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 228 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 11:25:24,526 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 120 flow [2023-08-27 11:25:24,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-27 11:25:24,528 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -10 predicate places. [2023-08-27 11:25:24,528 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 120 flow [2023-08-27 11:25:24,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:24,528 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:25:24,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:25:24,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:24,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:24,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1249999410, now seen corresponding path program 1 times [2023-08-27 11:25:24,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:24,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128739465] [2023-08-27 11:25:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:24,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:24,557 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 11:25:24,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128739465] [2023-08-27 11:25:24,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128739465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:24,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:24,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:25:24,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052488729] [2023-08-27 11:25:24,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:24,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:25:24,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:25:24,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:25:24,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 347 [2023-08-27 11:25:24,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:24,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 347 [2023-08-27 11:25:24,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:24,660 INFO L124 PetriNetUnfolderBase]: 972/1650 cut-off events. [2023-08-27 11:25:24,660 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-08-27 11:25:24,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 1650 events. 972/1650 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8369 event pairs, 945 based on Foata normal form. 0/1406 useless extension candidates. Maximal degree in co-relation 3082. Up to 1628 conditions per place. [2023-08-27 11:25:24,666 INFO L140 encePairwiseOnDemand]: 345/347 looper letters, 35 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-27 11:25:24,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 188 flow [2023-08-27 11:25:24,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:25:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:25:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-27 11:25:24,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47646493756003844 [2023-08-27 11:25:24,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-27 11:25:24,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-27 11:25:24,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:24,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-27 11:25:24,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,671 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 120 flow. Second operand 3 states and 496 transitions. [2023-08-27 11:25:24,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 188 flow [2023-08-27 11:25:24,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 40 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:25:24,672 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 115 flow [2023-08-27 11:25:24,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-27 11:25:24,673 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -11 predicate places. [2023-08-27 11:25:24,673 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 115 flow [2023-08-27 11:25:24,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:24,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:24,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 11:25:24,674 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:24,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:24,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1758980846, now seen corresponding path program 1 times [2023-08-27 11:25:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:24,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118204020] [2023-08-27 11:25:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:24,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:24,716 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 11:25:24,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:24,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118204020] [2023-08-27 11:25:24,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118204020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:24,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:24,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:25:24,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308514419] [2023-08-27 11:25:24,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:24,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:25:24,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:24,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:25:24,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:25:24,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 347 [2023-08-27 11:25:24,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:24,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 347 [2023-08-27 11:25:24,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:24,906 INFO L124 PetriNetUnfolderBase]: 1196/2051 cut-off events. [2023-08-27 11:25:24,906 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2023-08-27 11:25:24,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4600 conditions, 2051 events. 1196/2051 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11424 event pairs, 193 based on Foata normal form. 0/1804 useless extension candidates. Maximal degree in co-relation 4589. Up to 1096 conditions per place. [2023-08-27 11:25:24,912 INFO L140 encePairwiseOnDemand]: 332/347 looper letters, 93 selfloop transitions, 19 changer transitions 0/116 dead transitions. [2023-08-27 11:25:24,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 116 transitions, 547 flow [2023-08-27 11:25:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:25:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:25:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1142 transitions. [2023-08-27 11:25:24,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47015232606010704 [2023-08-27 11:25:24,915 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1142 transitions. [2023-08-27 11:25:24,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1142 transitions. [2023-08-27 11:25:24,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:24,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1142 transitions. [2023-08-27 11:25:24,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,920 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,920 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 115 flow. Second operand 7 states and 1142 transitions. [2023-08-27 11:25:24,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 116 transitions, 547 flow [2023-08-27 11:25:24,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 116 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:25:24,922 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 273 flow [2023-08-27 11:25:24,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-08-27 11:25:24,923 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2023-08-27 11:25:24,923 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 273 flow [2023-08-27 11:25:24,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:24,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:24,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 11:25:24,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:24,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:24,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1758980766, now seen corresponding path program 1 times [2023-08-27 11:25:24,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:24,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010704251] [2023-08-27 11:25:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:24,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:24,963 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 11:25:24,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:24,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010704251] [2023-08-27 11:25:24,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010704251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:24,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:24,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:25:24,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904528852] [2023-08-27 11:25:24,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:24,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:25:24,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:24,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:25:24,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:25:24,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 347 [2023-08-27 11:25:24,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:24,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:24,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 347 [2023-08-27 11:25:24,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:25,172 INFO L124 PetriNetUnfolderBase]: 1118/1961 cut-off events. [2023-08-27 11:25:25,172 INFO L125 PetriNetUnfolderBase]: For 1403/1403 co-relation queries the response was YES. [2023-08-27 11:25:25,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5454 conditions, 1961 events. 1118/1961 cut-off events. For 1403/1403 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11154 event pairs, 175 based on Foata normal form. 78/2038 useless extension candidates. Maximal degree in co-relation 5437. Up to 1115 conditions per place. [2023-08-27 11:25:25,179 INFO L140 encePairwiseOnDemand]: 332/347 looper letters, 94 selfloop transitions, 24 changer transitions 2/124 dead transitions. [2023-08-27 11:25:25,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 124 transitions, 747 flow [2023-08-27 11:25:25,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:25:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:25:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1139 transitions. [2023-08-27 11:25:25,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468917249897077 [2023-08-27 11:25:25,182 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1139 transitions. [2023-08-27 11:25:25,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1139 transitions. [2023-08-27 11:25:25,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:25,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1139 transitions. [2023-08-27 11:25:25,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.71428571428572) internal successors, (1139), 7 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,188 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,188 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 273 flow. Second operand 7 states and 1139 transitions. [2023-08-27 11:25:25,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 124 transitions, 747 flow [2023-08-27 11:25:25,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 124 transitions, 739 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 11:25:25,193 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 459 flow [2023-08-27 11:25:25,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=459, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-08-27 11:25:25,193 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 8 predicate places. [2023-08-27 11:25:25,194 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 459 flow [2023-08-27 11:25:25,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:25,194 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:25,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 11:25:25,194 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:25,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1588569013, now seen corresponding path program 1 times [2023-08-27 11:25:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:25,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597132696] [2023-08-27 11:25:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:25,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:25,249 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 11:25:25,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:25,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597132696] [2023-08-27 11:25:25,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597132696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:25,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:25,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:25:25,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339884131] [2023-08-27 11:25:25,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:25,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:25:25,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:25,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:25:25,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:25:25,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 347 [2023-08-27 11:25:25,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 459 flow. Second operand has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:25,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 347 [2023-08-27 11:25:25,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:25,444 INFO L124 PetriNetUnfolderBase]: 1237/2122 cut-off events. [2023-08-27 11:25:25,444 INFO L125 PetriNetUnfolderBase]: For 3624/3624 co-relation queries the response was YES. [2023-08-27 11:25:25,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6664 conditions, 2122 events. 1237/2122 cut-off events. For 3624/3624 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11858 event pairs, 259 based on Foata normal form. 60/2181 useless extension candidates. Maximal degree in co-relation 6642. Up to 1340 conditions per place. [2023-08-27 11:25:25,454 INFO L140 encePairwiseOnDemand]: 334/347 looper letters, 88 selfloop transitions, 22 changer transitions 1/115 dead transitions. [2023-08-27 11:25:25,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 115 transitions, 884 flow [2023-08-27 11:25:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:25:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:25:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 965 transitions. [2023-08-27 11:25:25,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46349663784822287 [2023-08-27 11:25:25,457 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 965 transitions. [2023-08-27 11:25:25,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 965 transitions. [2023-08-27 11:25:25,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:25,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 965 transitions. [2023-08-27 11:25:25,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 347.0) internal successors, (2429), 7 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,461 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 347.0) internal successors, (2429), 7 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,461 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 459 flow. Second operand 6 states and 965 transitions. [2023-08-27 11:25:25,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 115 transitions, 884 flow [2023-08-27 11:25:25,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 115 transitions, 854 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-27 11:25:25,468 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 616 flow [2023-08-27 11:25:25,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=616, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2023-08-27 11:25:25,468 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 14 predicate places. [2023-08-27 11:25:25,469 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 616 flow [2023-08-27 11:25:25,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:25,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:25,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 11:25:25,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:25,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1588568980, now seen corresponding path program 1 times [2023-08-27 11:25:25,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:25,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028065577] [2023-08-27 11:25:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:25,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:25,511 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 11:25:25,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:25,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028065577] [2023-08-27 11:25:25,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028065577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:25,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:25,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:25:25,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779464639] [2023-08-27 11:25:25,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:25,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:25:25,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:25:25,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:25:25,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 347 [2023-08-27 11:25:25,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 616 flow. Second operand has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:25,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 347 [2023-08-27 11:25:25,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:25,716 INFO L124 PetriNetUnfolderBase]: 1073/1856 cut-off events. [2023-08-27 11:25:25,716 INFO L125 PetriNetUnfolderBase]: For 4643/4643 co-relation queries the response was YES. [2023-08-27 11:25:25,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6147 conditions, 1856 events. 1073/1856 cut-off events. For 4643/4643 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10007 event pairs, 250 based on Foata normal form. 60/1915 useless extension candidates. Maximal degree in co-relation 6121. Up to 1181 conditions per place. [2023-08-27 11:25:25,723 INFO L140 encePairwiseOnDemand]: 334/347 looper letters, 80 selfloop transitions, 19 changer transitions 4/107 dead transitions. [2023-08-27 11:25:25,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 107 transitions, 872 flow [2023-08-27 11:25:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:25:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:25:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 964 transitions. [2023-08-27 11:25:25,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46301633045148893 [2023-08-27 11:25:25,726 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 964 transitions. [2023-08-27 11:25:25,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 964 transitions. [2023-08-27 11:25:25,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:25,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 964 transitions. [2023-08-27 11:25:25,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 347.0) internal successors, (2429), 7 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,731 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 347.0) internal successors, (2429), 7 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,731 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 616 flow. Second operand 6 states and 964 transitions. [2023-08-27 11:25:25,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 107 transitions, 872 flow [2023-08-27 11:25:25,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 107 transitions, 855 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 11:25:25,741 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 558 flow [2023-08-27 11:25:25,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=558, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2023-08-27 11:25:25,742 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 18 predicate places. [2023-08-27 11:25:25,742 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 558 flow [2023-08-27 11:25:25,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:25,742 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 11:25:25,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 11:25:25,742 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:25,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:25,743 INFO L85 PathProgramCache]: Analyzing trace with hash -832754882, now seen corresponding path program 1 times [2023-08-27 11:25:25,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:25,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554762654] [2023-08-27 11:25:25,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:25,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:25,799 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 11:25:25,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:25,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554762654] [2023-08-27 11:25:25,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554762654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:25,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:25,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:25:25,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668137911] [2023-08-27 11:25:25,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:25,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:25,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:25,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:25,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 347 [2023-08-27 11:25:25,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 558 flow. Second operand has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:25,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:25,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 347 [2023-08-27 11:25:25,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:26,057 INFO L124 PetriNetUnfolderBase]: 1156/2011 cut-off events. [2023-08-27 11:25:26,057 INFO L125 PetriNetUnfolderBase]: For 4830/4830 co-relation queries the response was YES. [2023-08-27 11:25:26,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6741 conditions, 2011 events. 1156/2011 cut-off events. For 4830/4830 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11293 event pairs, 133 based on Foata normal form. 18/2028 useless extension candidates. Maximal degree in co-relation 6714. Up to 914 conditions per place. [2023-08-27 11:25:26,065 INFO L140 encePairwiseOnDemand]: 333/347 looper letters, 112 selfloop transitions, 36 changer transitions 8/160 dead transitions. [2023-08-27 11:25:26,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 160 transitions, 1246 flow [2023-08-27 11:25:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:25:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:25:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1553 transitions. [2023-08-27 11:25:26,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475504322766571 [2023-08-27 11:25:26,069 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1553 transitions. [2023-08-27 11:25:26,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1553 transitions. [2023-08-27 11:25:26,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:26,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1553 transitions. [2023-08-27 11:25:26,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 155.3) internal successors, (1553), 10 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 347.0) internal successors, (3817), 11 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,075 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 347.0) internal successors, (3817), 11 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,075 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 558 flow. Second operand 10 states and 1553 transitions. [2023-08-27 11:25:26,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 160 transitions, 1246 flow [2023-08-27 11:25:26,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 160 transitions, 1233 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:25:26,085 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 736 flow [2023-08-27 11:25:26,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=736, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2023-08-27 11:25:26,086 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 26 predicate places. [2023-08-27 11:25:26,086 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 736 flow [2023-08-27 11:25:26,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:26,086 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 11:25:26,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 11:25:26,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:26,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:26,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1947799061, now seen corresponding path program 1 times [2023-08-27 11:25:26,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:26,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085141516] [2023-08-27 11:25:26,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:26,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:26,155 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 11:25:26,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:26,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085141516] [2023-08-27 11:25:26,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085141516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:26,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:26,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:25:26,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059908964] [2023-08-27 11:25:26,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:26,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:26,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:26,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:26,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 347 [2023-08-27 11:25:26,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 736 flow. Second operand has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:26,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 347 [2023-08-27 11:25:26,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:26,479 INFO L124 PetriNetUnfolderBase]: 1133/2003 cut-off events. [2023-08-27 11:25:26,479 INFO L125 PetriNetUnfolderBase]: For 6248/6248 co-relation queries the response was YES. [2023-08-27 11:25:26,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7193 conditions, 2003 events. 1133/2003 cut-off events. For 6248/6248 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11425 event pairs, 145 based on Foata normal form. 18/2020 useless extension candidates. Maximal degree in co-relation 7162. Up to 922 conditions per place. [2023-08-27 11:25:26,487 INFO L140 encePairwiseOnDemand]: 334/347 looper letters, 115 selfloop transitions, 33 changer transitions 12/164 dead transitions. [2023-08-27 11:25:26,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 164 transitions, 1355 flow [2023-08-27 11:25:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:25:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:25:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1841 transitions. [2023-08-27 11:25:26,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421229586935639 [2023-08-27 11:25:26,491 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1841 transitions. [2023-08-27 11:25:26,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1841 transitions. [2023-08-27 11:25:26,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:26,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1841 transitions. [2023-08-27 11:25:26,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 153.41666666666666) internal successors, (1841), 12 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 347.0) internal successors, (4511), 13 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,498 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 347.0) internal successors, (4511), 13 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,498 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 736 flow. Second operand 12 states and 1841 transitions. [2023-08-27 11:25:26,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 164 transitions, 1355 flow [2023-08-27 11:25:26,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 164 transitions, 1291 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-27 11:25:26,513 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 742 flow [2023-08-27 11:25:26,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=742, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2023-08-27 11:25:26,514 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 33 predicate places. [2023-08-27 11:25:26,514 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 742 flow [2023-08-27 11:25:26,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:26,515 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 11:25:26,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 11:25:26,515 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:26,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1949373640, now seen corresponding path program 1 times [2023-08-27 11:25:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:26,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003385391] [2023-08-27 11:25:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:26,575 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 11:25:26,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:26,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003385391] [2023-08-27 11:25:26,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003385391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:26,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:26,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:25:26,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027826707] [2023-08-27 11:25:26,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:26,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:26,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:26,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:26,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 347 [2023-08-27 11:25:26,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 742 flow. Second operand has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:26,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 347 [2023-08-27 11:25:26,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:26,854 INFO L124 PetriNetUnfolderBase]: 1199/2096 cut-off events. [2023-08-27 11:25:26,854 INFO L125 PetriNetUnfolderBase]: For 7412/7412 co-relation queries the response was YES. [2023-08-27 11:25:26,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7664 conditions, 2096 events. 1199/2096 cut-off events. For 7412/7412 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12015 event pairs, 142 based on Foata normal form. 36/2131 useless extension candidates. Maximal degree in co-relation 7630. Up to 974 conditions per place. [2023-08-27 11:25:26,866 INFO L140 encePairwiseOnDemand]: 334/347 looper letters, 113 selfloop transitions, 45 changer transitions 0/162 dead transitions. [2023-08-27 11:25:26,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 162 transitions, 1376 flow [2023-08-27 11:25:26,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:25:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:25:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2125 transitions. [2023-08-27 11:25:26,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4374228077398106 [2023-08-27 11:25:26,870 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2125 transitions. [2023-08-27 11:25:26,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2125 transitions. [2023-08-27 11:25:26,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:26,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2125 transitions. [2023-08-27 11:25:26,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 151.78571428571428) internal successors, (2125), 14 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 347.0) internal successors, (5205), 15 states have internal predecessors, (5205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,877 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 347.0) internal successors, (5205), 15 states have internal predecessors, (5205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,877 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 742 flow. Second operand 14 states and 2125 transitions. [2023-08-27 11:25:26,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 162 transitions, 1376 flow [2023-08-27 11:25:26,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 162 transitions, 1318 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-27 11:25:26,898 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 902 flow [2023-08-27 11:25:26,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=902, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2023-08-27 11:25:26,898 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 41 predicate places. [2023-08-27 11:25:26,898 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 902 flow [2023-08-27 11:25:26,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:26,898 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 11:25:26,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 11:25:26,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:26,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:26,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2048351048, now seen corresponding path program 1 times [2023-08-27 11:25:26,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:26,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206012928] [2023-08-27 11:25:26,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:26,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:26,968 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 11:25:26,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:26,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206012928] [2023-08-27 11:25:26,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206012928] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:26,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:26,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:25:26,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792551570] [2023-08-27 11:25:26,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:26,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:26,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:26,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:26,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 347 [2023-08-27 11:25:26,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 902 flow. Second operand has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:26,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:26,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 347 [2023-08-27 11:25:26,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:27,257 INFO L124 PetriNetUnfolderBase]: 1254/2205 cut-off events. [2023-08-27 11:25:27,258 INFO L125 PetriNetUnfolderBase]: For 9172/9172 co-relation queries the response was YES. [2023-08-27 11:25:27,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8384 conditions, 2205 events. 1254/2205 cut-off events. For 9172/9172 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12836 event pairs, 235 based on Foata normal form. 33/2237 useless extension candidates. Maximal degree in co-relation 8348. Up to 1405 conditions per place. [2023-08-27 11:25:27,268 INFO L140 encePairwiseOnDemand]: 334/347 looper letters, 117 selfloop transitions, 28 changer transitions 6/155 dead transitions. [2023-08-27 11:25:27,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 155 transitions, 1517 flow [2023-08-27 11:25:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:25:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:25:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1532 transitions. [2023-08-27 11:25:27,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44149855907780977 [2023-08-27 11:25:27,271 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1532 transitions. [2023-08-27 11:25:27,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1532 transitions. [2023-08-27 11:25:27,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:27,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1532 transitions. [2023-08-27 11:25:27,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 153.2) internal successors, (1532), 10 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:27,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 347.0) internal successors, (3817), 11 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:27,303 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 347.0) internal successors, (3817), 11 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:27,303 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 902 flow. Second operand 10 states and 1532 transitions. [2023-08-27 11:25:27,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 155 transitions, 1517 flow [2023-08-27 11:25:27,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 155 transitions, 1410 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-08-27 11:25:27,329 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 994 flow [2023-08-27 11:25:27,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=994, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2023-08-27 11:25:27,329 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 49 predicate places. [2023-08-27 11:25:27,329 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 994 flow [2023-08-27 11:25:27,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:27,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:27,330 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 11:25:27,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 11:25:27,330 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:27,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash -832715008, now seen corresponding path program 2 times [2023-08-27 11:25:27,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:27,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054626456] [2023-08-27 11:25:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:27,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:27,400 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 11:25:27,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:27,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054626456] [2023-08-27 11:25:27,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054626456] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:27,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:27,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:25:27,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628978103] [2023-08-27 11:25:27,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:27,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:27,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:27,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:27,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 347 [2023-08-27 11:25:27,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 994 flow. Second operand has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:27,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:27,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 347 [2023-08-27 11:25:27,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:27,697 INFO L124 PetriNetUnfolderBase]: 1163/2042 cut-off events. [2023-08-27 11:25:27,698 INFO L125 PetriNetUnfolderBase]: For 8204/8204 co-relation queries the response was YES. [2023-08-27 11:25:27,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 2042 events. 1163/2042 cut-off events. For 8204/8204 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11666 event pairs, 223 based on Foata normal form. 36/2077 useless extension candidates. Maximal degree in co-relation 7600. Up to 1175 conditions per place. [2023-08-27 11:25:27,706 INFO L140 encePairwiseOnDemand]: 334/347 looper letters, 106 selfloop transitions, 34 changer transitions 9/153 dead transitions. [2023-08-27 11:25:27,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 153 transitions, 1384 flow [2023-08-27 11:25:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:25:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:25:27,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1830 transitions. [2023-08-27 11:25:27,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43948126801152737 [2023-08-27 11:25:27,709 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1830 transitions. [2023-08-27 11:25:27,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1830 transitions. [2023-08-27 11:25:27,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:27,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1830 transitions. [2023-08-27 11:25:27,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 152.5) internal successors, (1830), 12 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:27,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 347.0) internal successors, (4511), 13 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:27,715 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 347.0) internal successors, (4511), 13 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:27,715 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 994 flow. Second operand 12 states and 1830 transitions. [2023-08-27 11:25:27,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 153 transitions, 1384 flow [2023-08-27 11:25:27,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 153 transitions, 1263 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-27 11:25:27,740 INFO L231 Difference]: Finished difference. Result has 111 places, 82 transitions, 779 flow [2023-08-27 11:25:27,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=779, PETRI_PLACES=111, PETRI_TRANSITIONS=82} [2023-08-27 11:25:27,741 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 51 predicate places. [2023-08-27 11:25:27,741 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 82 transitions, 779 flow [2023-08-27 11:25:27,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:27,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:27,741 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 11:25:27,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 11:25:27,741 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:27,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:27,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2032199485, now seen corresponding path program 1 times [2023-08-27 11:25:27,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:27,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801201244] [2023-08-27 11:25:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:27,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:27,790 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 11:25:27,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:27,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801201244] [2023-08-27 11:25:27,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801201244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:27,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:27,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:25:27,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079736792] [2023-08-27 11:25:27,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:27,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:27,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:27,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:27,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 347 [2023-08-27 11:25:27,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 82 transitions, 779 flow. Second operand has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:27,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:27,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 347 [2023-08-27 11:25:27,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:28,042 INFO L124 PetriNetUnfolderBase]: 1179/2076 cut-off events. [2023-08-27 11:25:28,042 INFO L125 PetriNetUnfolderBase]: For 7369/7369 co-relation queries the response was YES. [2023-08-27 11:25:28,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7682 conditions, 2076 events. 1179/2076 cut-off events. For 7369/7369 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11902 event pairs, 187 based on Foata normal form. 18/2093 useless extension candidates. Maximal degree in co-relation 7643. Up to 1146 conditions per place. [2023-08-27 11:25:28,052 INFO L140 encePairwiseOnDemand]: 335/347 looper letters, 100 selfloop transitions, 36 changer transitions 8/148 dead transitions. [2023-08-27 11:25:28,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 148 transitions, 1423 flow [2023-08-27 11:25:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:25:28,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:25:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1382 transitions. [2023-08-27 11:25:28,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425232148575088 [2023-08-27 11:25:28,054 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1382 transitions. [2023-08-27 11:25:28,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1382 transitions. [2023-08-27 11:25:28,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:28,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1382 transitions. [2023-08-27 11:25:28,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.55555555555554) internal successors, (1382), 9 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 347.0) internal successors, (3470), 10 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,059 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 347.0) internal successors, (3470), 10 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,059 INFO L175 Difference]: Start difference. First operand has 111 places, 82 transitions, 779 flow. Second operand 9 states and 1382 transitions. [2023-08-27 11:25:28,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 148 transitions, 1423 flow [2023-08-27 11:25:28,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 148 transitions, 1393 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-27 11:25:28,082 INFO L231 Difference]: Finished difference. Result has 112 places, 91 transitions, 988 flow [2023-08-27 11:25:28,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=988, PETRI_PLACES=112, PETRI_TRANSITIONS=91} [2023-08-27 11:25:28,083 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 52 predicate places. [2023-08-27 11:25:28,083 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 91 transitions, 988 flow [2023-08-27 11:25:28,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:28,083 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 11:25:28,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 11:25:28,083 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:28,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:28,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2048350968, now seen corresponding path program 2 times [2023-08-27 11:25:28,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:28,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387115596] [2023-08-27 11:25:28,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:28,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:28,151 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 11:25:28,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:28,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387115596] [2023-08-27 11:25:28,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387115596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:28,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:28,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:25:28,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705604770] [2023-08-27 11:25:28,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:28,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:28,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:28,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:28,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:28,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 347 [2023-08-27 11:25:28,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 91 transitions, 988 flow. Second operand has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:28,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 347 [2023-08-27 11:25:28,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:28,427 INFO L124 PetriNetUnfolderBase]: 1103/1928 cut-off events. [2023-08-27 11:25:28,427 INFO L125 PetriNetUnfolderBase]: For 8111/8111 co-relation queries the response was YES. [2023-08-27 11:25:28,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7291 conditions, 1928 events. 1103/1928 cut-off events. For 8111/8111 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10820 event pairs, 145 based on Foata normal form. 36/1963 useless extension candidates. Maximal degree in co-relation 7252. Up to 871 conditions per place. [2023-08-27 11:25:28,434 INFO L140 encePairwiseOnDemand]: 335/347 looper letters, 103 selfloop transitions, 41 changer transitions 7/155 dead transitions. [2023-08-27 11:25:28,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 155 transitions, 1338 flow [2023-08-27 11:25:28,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:25:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:25:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1978 transitions. [2023-08-27 11:25:28,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384837064952339 [2023-08-27 11:25:28,436 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1978 transitions. [2023-08-27 11:25:28,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1978 transitions. [2023-08-27 11:25:28,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:28,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1978 transitions. [2023-08-27 11:25:28,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 152.15384615384616) internal successors, (1978), 13 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 347.0) internal successors, (4858), 14 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,442 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 347.0) internal successors, (4858), 14 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,442 INFO L175 Difference]: Start difference. First operand has 112 places, 91 transitions, 988 flow. Second operand 13 states and 1978 transitions. [2023-08-27 11:25:28,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 155 transitions, 1338 flow [2023-08-27 11:25:28,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 155 transitions, 1197 flow, removed 12 selfloop flow, removed 14 redundant places. [2023-08-27 11:25:28,465 INFO L231 Difference]: Finished difference. Result has 109 places, 79 transitions, 742 flow [2023-08-27 11:25:28,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=742, PETRI_PLACES=109, PETRI_TRANSITIONS=79} [2023-08-27 11:25:28,465 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 49 predicate places. [2023-08-27 11:25:28,465 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 79 transitions, 742 flow [2023-08-27 11:25:28,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:28,465 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 11:25:28,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 11:25:28,466 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:28,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:28,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2032199425, now seen corresponding path program 1 times [2023-08-27 11:25:28,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:28,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761491101] [2023-08-27 11:25:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:28,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:28,529 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 11:25:28,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:28,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761491101] [2023-08-27 11:25:28,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761491101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:28,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:28,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:25:28,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392036961] [2023-08-27 11:25:28,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:28,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:28,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:28,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:28,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:28,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 347 [2023-08-27 11:25:28,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 79 transitions, 742 flow. Second operand has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:28,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 347 [2023-08-27 11:25:28,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:28,744 INFO L124 PetriNetUnfolderBase]: 992/1739 cut-off events. [2023-08-27 11:25:28,744 INFO L125 PetriNetUnfolderBase]: For 4730/4730 co-relation queries the response was YES. [2023-08-27 11:25:28,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6424 conditions, 1739 events. 992/1739 cut-off events. For 4730/4730 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9554 event pairs, 187 based on Foata normal form. 18/1756 useless extension candidates. Maximal degree in co-relation 6391. Up to 984 conditions per place. [2023-08-27 11:25:28,751 INFO L140 encePairwiseOnDemand]: 336/347 looper letters, 84 selfloop transitions, 17 changer transitions 27/132 dead transitions. [2023-08-27 11:25:28,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 132 transitions, 1184 flow [2023-08-27 11:25:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:25:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:25:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1517 transitions. [2023-08-27 11:25:28,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371757925072046 [2023-08-27 11:25:28,754 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1517 transitions. [2023-08-27 11:25:28,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1517 transitions. [2023-08-27 11:25:28,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:28,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1517 transitions. [2023-08-27 11:25:28,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 151.7) internal successors, (1517), 10 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 347.0) internal successors, (3817), 11 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,758 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 347.0) internal successors, (3817), 11 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,758 INFO L175 Difference]: Start difference. First operand has 109 places, 79 transitions, 742 flow. Second operand 10 states and 1517 transitions. [2023-08-27 11:25:28,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 132 transitions, 1184 flow [2023-08-27 11:25:28,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 132 transitions, 1090 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-08-27 11:25:28,771 INFO L231 Difference]: Finished difference. Result has 105 places, 70 transitions, 572 flow [2023-08-27 11:25:28,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=572, PETRI_PLACES=105, PETRI_TRANSITIONS=70} [2023-08-27 11:25:28,771 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 45 predicate places. [2023-08-27 11:25:28,771 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 70 transitions, 572 flow [2023-08-27 11:25:28,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:28,772 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 11:25:28,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 11:25:28,772 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:28,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1109982242, now seen corresponding path program 1 times [2023-08-27 11:25:28,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:28,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101148955] [2023-08-27 11:25:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:28,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:28,842 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 11:25:28,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:28,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101148955] [2023-08-27 11:25:28,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101148955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:28,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:28,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:25:28,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245108843] [2023-08-27 11:25:28,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:28,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:25:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:28,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:25:28,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:25:28,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 347 [2023-08-27 11:25:28,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 70 transitions, 572 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:28,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:28,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 347 [2023-08-27 11:25:28,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:29,154 INFO L124 PetriNetUnfolderBase]: 1009/1765 cut-off events. [2023-08-27 11:25:29,155 INFO L125 PetriNetUnfolderBase]: For 5232/5232 co-relation queries the response was YES. [2023-08-27 11:25:29,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6185 conditions, 1765 events. 1009/1765 cut-off events. For 5232/5232 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9709 event pairs, 166 based on Foata normal form. 18/1782 useless extension candidates. Maximal degree in co-relation 6153. Up to 633 conditions per place. [2023-08-27 11:25:29,161 INFO L140 encePairwiseOnDemand]: 335/347 looper letters, 114 selfloop transitions, 32 changer transitions 13/163 dead transitions. [2023-08-27 11:25:29,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 163 transitions, 1217 flow [2023-08-27 11:25:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 11:25:29,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 11:25:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2470 transitions. [2023-08-27 11:25:29,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4187150364468554 [2023-08-27 11:25:29,163 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2470 transitions. [2023-08-27 11:25:29,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2470 transitions. [2023-08-27 11:25:29,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:29,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2470 transitions. [2023-08-27 11:25:29,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 145.2941176470588) internal successors, (2470), 17 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 347.0) internal successors, (6246), 18 states have internal predecessors, (6246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,170 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 347.0) internal successors, (6246), 18 states have internal predecessors, (6246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,170 INFO L175 Difference]: Start difference. First operand has 105 places, 70 transitions, 572 flow. Second operand 17 states and 2470 transitions. [2023-08-27 11:25:29,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 163 transitions, 1217 flow [2023-08-27 11:25:29,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 163 transitions, 1167 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-08-27 11:25:29,180 INFO L231 Difference]: Finished difference. Result has 113 places, 73 transitions, 661 flow [2023-08-27 11:25:29,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=661, PETRI_PLACES=113, PETRI_TRANSITIONS=73} [2023-08-27 11:25:29,180 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 53 predicate places. [2023-08-27 11:25:29,180 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 73 transitions, 661 flow [2023-08-27 11:25:29,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:29,181 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 11:25:29,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 11:25:29,181 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:29,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:29,181 INFO L85 PathProgramCache]: Analyzing trace with hash 217480501, now seen corresponding path program 1 times [2023-08-27 11:25:29,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:29,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481508129] [2023-08-27 11:25:29,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:29,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:29,237 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 11:25:29,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:29,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481508129] [2023-08-27 11:25:29,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481508129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:29,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:29,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:25:29,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294915566] [2023-08-27 11:25:29,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:29,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:25:29,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:25:29,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:25:29,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 347 [2023-08-27 11:25:29,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 73 transitions, 661 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:29,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 347 [2023-08-27 11:25:29,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:29,538 INFO L124 PetriNetUnfolderBase]: 1052/1841 cut-off events. [2023-08-27 11:25:29,538 INFO L125 PetriNetUnfolderBase]: For 6665/6665 co-relation queries the response was YES. [2023-08-27 11:25:29,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6667 conditions, 1841 events. 1052/1841 cut-off events. For 6665/6665 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10212 event pairs, 232 based on Foata normal form. 9/1849 useless extension candidates. Maximal degree in co-relation 6634. Up to 1106 conditions per place. [2023-08-27 11:25:29,544 INFO L140 encePairwiseOnDemand]: 335/347 looper letters, 106 selfloop transitions, 30 changer transitions 8/148 dead transitions. [2023-08-27 11:25:29,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 148 transitions, 1197 flow [2023-08-27 11:25:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:25:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:25:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1906 transitions. [2023-08-27 11:25:29,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225227222345378 [2023-08-27 11:25:29,546 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1906 transitions. [2023-08-27 11:25:29,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1906 transitions. [2023-08-27 11:25:29,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:29,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1906 transitions. [2023-08-27 11:25:29,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 146.6153846153846) internal successors, (1906), 13 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 347.0) internal successors, (4858), 14 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,551 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 347.0) internal successors, (4858), 14 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,551 INFO L175 Difference]: Start difference. First operand has 113 places, 73 transitions, 661 flow. Second operand 13 states and 1906 transitions. [2023-08-27 11:25:29,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 148 transitions, 1197 flow [2023-08-27 11:25:29,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 148 transitions, 1136 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-27 11:25:29,564 INFO L231 Difference]: Finished difference. Result has 115 places, 75 transitions, 704 flow [2023-08-27 11:25:29,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=704, PETRI_PLACES=115, PETRI_TRANSITIONS=75} [2023-08-27 11:25:29,564 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 55 predicate places. [2023-08-27 11:25:29,564 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 75 transitions, 704 flow [2023-08-27 11:25:29,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:29,565 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 11:25:29,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 11:25:29,565 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:29,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:29,567 INFO L85 PathProgramCache]: Analyzing trace with hash -951901237, now seen corresponding path program 2 times [2023-08-27 11:25:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:29,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904005475] [2023-08-27 11:25:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:29,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:29,620 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 11:25:29,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:29,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904005475] [2023-08-27 11:25:29,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904005475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:29,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:29,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:25:29,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87592693] [2023-08-27 11:25:29,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:29,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:29,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:29,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:29,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:29,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 347 [2023-08-27 11:25:29,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 75 transitions, 704 flow. Second operand has 7 states, 7 states have (on average 144.85714285714286) internal successors, (1014), 7 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:29,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 347 [2023-08-27 11:25:29,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:29,833 INFO L124 PetriNetUnfolderBase]: 1037/1820 cut-off events. [2023-08-27 11:25:29,834 INFO L125 PetriNetUnfolderBase]: For 6587/6587 co-relation queries the response was YES. [2023-08-27 11:25:29,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6687 conditions, 1820 events. 1037/1820 cut-off events. For 6587/6587 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10166 event pairs, 235 based on Foata normal form. 9/1828 useless extension candidates. Maximal degree in co-relation 6652. Up to 1275 conditions per place. [2023-08-27 11:25:29,841 INFO L140 encePairwiseOnDemand]: 337/347 looper letters, 75 selfloop transitions, 12 changer transitions 21/112 dead transitions. [2023-08-27 11:25:29,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 112 transitions, 1008 flow [2023-08-27 11:25:29,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:25:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:25:29,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1218 transitions. [2023-08-27 11:25:29,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387608069164265 [2023-08-27 11:25:29,843 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1218 transitions. [2023-08-27 11:25:29,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1218 transitions. [2023-08-27 11:25:29,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:29,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1218 transitions. [2023-08-27 11:25:29,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 152.25) internal successors, (1218), 8 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 347.0) internal successors, (3123), 9 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,846 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 347.0) internal successors, (3123), 9 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,846 INFO L175 Difference]: Start difference. First operand has 115 places, 75 transitions, 704 flow. Second operand 8 states and 1218 transitions. [2023-08-27 11:25:29,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 112 transitions, 1008 flow [2023-08-27 11:25:29,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 962 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-08-27 11:25:29,859 INFO L231 Difference]: Finished difference. Result has 113 places, 67 transitions, 576 flow [2023-08-27 11:25:29,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=576, PETRI_PLACES=113, PETRI_TRANSITIONS=67} [2023-08-27 11:25:29,860 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 53 predicate places. [2023-08-27 11:25:29,860 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 67 transitions, 576 flow [2023-08-27 11:25:29,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.85714285714286) internal successors, (1014), 7 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:29,860 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 11:25:29,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 11:25:29,860 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:29,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:29,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1269206091, now seen corresponding path program 3 times [2023-08-27 11:25:29,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:29,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65467229] [2023-08-27 11:25:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:29,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:29,920 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 11:25:29,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:29,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65467229] [2023-08-27 11:25:29,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65467229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:29,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:29,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:25:29,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245774117] [2023-08-27 11:25:29,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:25:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:25:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:25:29,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 347 [2023-08-27 11:25:29,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 67 transitions, 576 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:29,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:29,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 347 [2023-08-27 11:25:29,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:30,184 INFO L124 PetriNetUnfolderBase]: 879/1551 cut-off events. [2023-08-27 11:25:30,184 INFO L125 PetriNetUnfolderBase]: For 5707/5707 co-relation queries the response was YES. [2023-08-27 11:25:30,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5525 conditions, 1551 events. 879/1551 cut-off events. For 5707/5707 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8281 event pairs, 208 based on Foata normal form. 9/1559 useless extension candidates. Maximal degree in co-relation 5489. Up to 988 conditions per place. [2023-08-27 11:25:30,190 INFO L140 encePairwiseOnDemand]: 335/347 looper letters, 90 selfloop transitions, 19 changer transitions 9/122 dead transitions. [2023-08-27 11:25:30,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 122 transitions, 950 flow [2023-08-27 11:25:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:25:30,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:25:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1607 transitions. [2023-08-27 11:25:30,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42101126539166883 [2023-08-27 11:25:30,192 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1607 transitions. [2023-08-27 11:25:30,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1607 transitions. [2023-08-27 11:25:30,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:30,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1607 transitions. [2023-08-27 11:25:30,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.0909090909091) internal successors, (1607), 11 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 347.0) internal successors, (4164), 12 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,196 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 347.0) internal successors, (4164), 12 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,196 INFO L175 Difference]: Start difference. First operand has 113 places, 67 transitions, 576 flow. Second operand 11 states and 1607 transitions. [2023-08-27 11:25:30,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 122 transitions, 950 flow [2023-08-27 11:25:30,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 122 transitions, 905 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-27 11:25:30,206 INFO L231 Difference]: Finished difference. Result has 111 places, 66 transitions, 546 flow [2023-08-27 11:25:30,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=546, PETRI_PLACES=111, PETRI_TRANSITIONS=66} [2023-08-27 11:25:30,206 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 51 predicate places. [2023-08-27 11:25:30,206 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 66 transitions, 546 flow [2023-08-27 11:25:30,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:30,207 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 11:25:30,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 11:25:30,207 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:30,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1269206058, now seen corresponding path program 2 times [2023-08-27 11:25:30,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:30,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194434300] [2023-08-27 11:25:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:30,269 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 11:25:30,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:30,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194434300] [2023-08-27 11:25:30,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194434300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:30,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:30,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:25:30,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108564899] [2023-08-27 11:25:30,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:30,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:25:30,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:25:30,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:25:30,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 347 [2023-08-27 11:25:30,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 66 transitions, 546 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:30,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 347 [2023-08-27 11:25:30,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:30,525 INFO L124 PetriNetUnfolderBase]: 852/1503 cut-off events. [2023-08-27 11:25:30,525 INFO L125 PetriNetUnfolderBase]: For 4615/4615 co-relation queries the response was YES. [2023-08-27 11:25:30,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5254 conditions, 1503 events. 852/1503 cut-off events. For 4615/4615 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8025 event pairs, 145 based on Foata normal form. 9/1511 useless extension candidates. Maximal degree in co-relation 5219. Up to 490 conditions per place. [2023-08-27 11:25:30,530 INFO L140 encePairwiseOnDemand]: 335/347 looper letters, 98 selfloop transitions, 29 changer transitions 8/139 dead transitions. [2023-08-27 11:25:30,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 139 transitions, 1012 flow [2023-08-27 11:25:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:25:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:25:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1901 transitions. [2023-08-27 11:25:30,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42141432054976724 [2023-08-27 11:25:30,532 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1901 transitions. [2023-08-27 11:25:30,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1901 transitions. [2023-08-27 11:25:30,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:30,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1901 transitions. [2023-08-27 11:25:30,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 146.23076923076923) internal successors, (1901), 13 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 347.0) internal successors, (4858), 14 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,536 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 347.0) internal successors, (4858), 14 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,537 INFO L175 Difference]: Start difference. First operand has 111 places, 66 transitions, 546 flow. Second operand 13 states and 1901 transitions. [2023-08-27 11:25:30,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 139 transitions, 1012 flow [2023-08-27 11:25:30,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 139 transitions, 974 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-08-27 11:25:30,545 INFO L231 Difference]: Finished difference. Result has 113 places, 63 transitions, 525 flow [2023-08-27 11:25:30,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=525, PETRI_PLACES=113, PETRI_TRANSITIONS=63} [2023-08-27 11:25:30,546 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 53 predicate places. [2023-08-27 11:25:30,546 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 63 transitions, 525 flow [2023-08-27 11:25:30,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:30,546 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 11:25:30,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 11:25:30,546 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:30,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:30,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2074660405, now seen corresponding path program 4 times [2023-08-27 11:25:30,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:30,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170357405] [2023-08-27 11:25:30,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:30,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:30,603 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 11:25:30,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:30,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170357405] [2023-08-27 11:25:30,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170357405] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:30,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:30,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:25:30,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676480527] [2023-08-27 11:25:30,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:30,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:25:30,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:30,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:25:30,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:25:30,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 347 [2023-08-27 11:25:30,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 63 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:30,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 347 [2023-08-27 11:25:30,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:30,850 INFO L124 PetriNetUnfolderBase]: 772/1366 cut-off events. [2023-08-27 11:25:30,851 INFO L125 PetriNetUnfolderBase]: For 3678/3678 co-relation queries the response was YES. [2023-08-27 11:25:30,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4915 conditions, 1366 events. 772/1366 cut-off events. For 3678/3678 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7145 event pairs, 94 based on Foata normal form. 9/1374 useless extension candidates. Maximal degree in co-relation 4881. Up to 394 conditions per place. [2023-08-27 11:25:30,855 INFO L140 encePairwiseOnDemand]: 335/347 looper letters, 86 selfloop transitions, 26 changer transitions 23/139 dead transitions. [2023-08-27 11:25:30,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 139 transitions, 1012 flow [2023-08-27 11:25:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:25:30,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:25:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2174 transitions. [2023-08-27 11:25:30,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41767531219980786 [2023-08-27 11:25:30,858 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2174 transitions. [2023-08-27 11:25:30,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2174 transitions. [2023-08-27 11:25:30,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:30,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2174 transitions. [2023-08-27 11:25:30,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 144.93333333333334) internal successors, (2174), 15 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 347.0) internal successors, (5552), 16 states have internal predecessors, (5552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,863 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 347.0) internal successors, (5552), 16 states have internal predecessors, (5552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,863 INFO L175 Difference]: Start difference. First operand has 113 places, 63 transitions, 525 flow. Second operand 15 states and 2174 transitions. [2023-08-27 11:25:30,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 139 transitions, 1012 flow [2023-08-27 11:25:30,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 139 transitions, 932 flow, removed 1 selfloop flow, removed 14 redundant places. [2023-08-27 11:25:30,870 INFO L231 Difference]: Finished difference. Result has 111 places, 58 transitions, 450 flow [2023-08-27 11:25:30,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=450, PETRI_PLACES=111, PETRI_TRANSITIONS=58} [2023-08-27 11:25:30,871 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 51 predicate places. [2023-08-27 11:25:30,871 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 58 transitions, 450 flow [2023-08-27 11:25:30,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:30,871 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 11:25:30,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 11:25:30,871 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:30,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:30,871 INFO L85 PathProgramCache]: Analyzing trace with hash 217480534, now seen corresponding path program 3 times [2023-08-27 11:25:30,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:30,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74659887] [2023-08-27 11:25:30,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:30,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:25:30,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:30,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74659887] [2023-08-27 11:25:30,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74659887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:30,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:30,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:25:30,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446449045] [2023-08-27 11:25:30,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:30,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:25:30,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:30,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:25:30,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:25:30,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 347 [2023-08-27 11:25:30,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 58 transitions, 450 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:30,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:30,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 347 [2023-08-27 11:25:30,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:31,116 INFO L124 PetriNetUnfolderBase]: 567/1008 cut-off events. [2023-08-27 11:25:31,117 INFO L125 PetriNetUnfolderBase]: For 2571/2571 co-relation queries the response was YES. [2023-08-27 11:25:31,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 1008 events. 567/1008 cut-off events. For 2571/2571 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4850 event pairs, 67 based on Foata normal form. 9/1016 useless extension candidates. Maximal degree in co-relation 3565. Up to 304 conditions per place. [2023-08-27 11:25:31,120 INFO L140 encePairwiseOnDemand]: 336/347 looper letters, 86 selfloop transitions, 24 changer transitions 10/124 dead transitions. [2023-08-27 11:25:31,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 866 flow [2023-08-27 11:25:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:25:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:25:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2166 transitions. [2023-08-27 11:25:31,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161383285302594 [2023-08-27 11:25:31,122 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2166 transitions. [2023-08-27 11:25:31,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2166 transitions. [2023-08-27 11:25:31,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:31,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2166 transitions. [2023-08-27 11:25:31,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 144.4) internal successors, (2166), 15 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 347.0) internal successors, (5552), 16 states have internal predecessors, (5552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,127 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 347.0) internal successors, (5552), 16 states have internal predecessors, (5552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,127 INFO L175 Difference]: Start difference. First operand has 111 places, 58 transitions, 450 flow. Second operand 15 states and 2166 transitions. [2023-08-27 11:25:31,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 866 flow [2023-08-27 11:25:31,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 124 transitions, 735 flow, removed 4 selfloop flow, removed 24 redundant places. [2023-08-27 11:25:31,132 INFO L231 Difference]: Finished difference. Result has 95 places, 53 transitions, 338 flow [2023-08-27 11:25:31,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=338, PETRI_PLACES=95, PETRI_TRANSITIONS=53} [2023-08-27 11:25:31,133 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 35 predicate places. [2023-08-27 11:25:31,133 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 53 transitions, 338 flow [2023-08-27 11:25:31,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:31,133 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 11:25:31,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 11:25:31,133 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:31,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:31,134 INFO L85 PathProgramCache]: Analyzing trace with hash 217528189, now seen corresponding path program 1 times [2023-08-27 11:25:31,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:31,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252344179] [2023-08-27 11:25:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:31,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:31,188 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 11:25:31,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:31,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252344179] [2023-08-27 11:25:31,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252344179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:31,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:31,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:25:31,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282377947] [2023-08-27 11:25:31,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:31,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:25:31,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:31,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:25:31,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:25:31,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 347 [2023-08-27 11:25:31,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 53 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:31,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 347 [2023-08-27 11:25:31,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:31,390 INFO L124 PetriNetUnfolderBase]: 535/955 cut-off events. [2023-08-27 11:25:31,390 INFO L125 PetriNetUnfolderBase]: For 1595/1595 co-relation queries the response was YES. [2023-08-27 11:25:31,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3068 conditions, 955 events. 535/955 cut-off events. For 1595/1595 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4574 event pairs, 106 based on Foata normal form. 9/963 useless extension candidates. Maximal degree in co-relation 3044. Up to 411 conditions per place. [2023-08-27 11:25:31,393 INFO L140 encePairwiseOnDemand]: 337/347 looper letters, 89 selfloop transitions, 25 changer transitions 1/119 dead transitions. [2023-08-27 11:25:31,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 119 transitions, 779 flow [2023-08-27 11:25:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:25:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:25:31,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1884 transitions. [2023-08-27 11:25:31,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176457548215473 [2023-08-27 11:25:31,395 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1884 transitions. [2023-08-27 11:25:31,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1884 transitions. [2023-08-27 11:25:31,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:31,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1884 transitions. [2023-08-27 11:25:31,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 144.92307692307693) internal successors, (1884), 13 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 347.0) internal successors, (4858), 14 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,399 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 347.0) internal successors, (4858), 14 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,399 INFO L175 Difference]: Start difference. First operand has 95 places, 53 transitions, 338 flow. Second operand 13 states and 1884 transitions. [2023-08-27 11:25:31,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 119 transitions, 779 flow [2023-08-27 11:25:31,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 719 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-08-27 11:25:31,402 INFO L231 Difference]: Finished difference. Result has 91 places, 58 transitions, 387 flow [2023-08-27 11:25:31,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=387, PETRI_PLACES=91, PETRI_TRANSITIONS=58} [2023-08-27 11:25:31,403 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 31 predicate places. [2023-08-27 11:25:31,403 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 58 transitions, 387 flow [2023-08-27 11:25:31,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:31,403 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 11:25:31,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 11:25:31,404 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:31,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1560039815, now seen corresponding path program 1 times [2023-08-27 11:25:31,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:31,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098163179] [2023-08-27 11:25:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:31,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:31,462 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 11:25:31,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:31,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098163179] [2023-08-27 11:25:31,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098163179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:31,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:31,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:25:31,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424659258] [2023-08-27 11:25:31,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:31,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:31,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:31,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:31,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 347 [2023-08-27 11:25:31,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 58 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 144.85714285714286) internal successors, (1014), 7 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:31,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 347 [2023-08-27 11:25:31,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:31,616 INFO L124 PetriNetUnfolderBase]: 559/997 cut-off events. [2023-08-27 11:25:31,617 INFO L125 PetriNetUnfolderBase]: For 1973/1973 co-relation queries the response was YES. [2023-08-27 11:25:31,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3268 conditions, 997 events. 559/997 cut-off events. For 1973/1973 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4782 event pairs, 118 based on Foata normal form. 9/1005 useless extension candidates. Maximal degree in co-relation 3242. Up to 517 conditions per place. [2023-08-27 11:25:31,620 INFO L140 encePairwiseOnDemand]: 338/347 looper letters, 84 selfloop transitions, 21 changer transitions 1/110 dead transitions. [2023-08-27 11:25:31,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 778 flow [2023-08-27 11:25:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:25:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:25:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1650 transitions. [2023-08-27 11:25:31,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322766570605187 [2023-08-27 11:25:31,622 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1650 transitions. [2023-08-27 11:25:31,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1650 transitions. [2023-08-27 11:25:31,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:31,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1650 transitions. [2023-08-27 11:25:31,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 150.0) internal successors, (1650), 11 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 347.0) internal successors, (4164), 12 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,625 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 347.0) internal successors, (4164), 12 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,625 INFO L175 Difference]: Start difference. First operand has 91 places, 58 transitions, 387 flow. Second operand 11 states and 1650 transitions. [2023-08-27 11:25:31,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 778 flow [2023-08-27 11:25:31,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 110 transitions, 748 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-27 11:25:31,630 INFO L231 Difference]: Finished difference. Result has 96 places, 62 transitions, 456 flow [2023-08-27 11:25:31,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=456, PETRI_PLACES=96, PETRI_TRANSITIONS=62} [2023-08-27 11:25:31,630 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 36 predicate places. [2023-08-27 11:25:31,630 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 62 transitions, 456 flow [2023-08-27 11:25:31,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.85714285714286) internal successors, (1014), 7 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:31,631 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 11:25:31,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 11:25:31,631 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:31,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1578449853, now seen corresponding path program 2 times [2023-08-27 11:25:31,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:31,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420788214] [2023-08-27 11:25:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:31,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:31,695 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 11:25:31,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:31,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420788214] [2023-08-27 11:25:31,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420788214] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:31,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:31,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:25:31,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858408884] [2023-08-27 11:25:31,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:31,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:25:31,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:25:31,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:25:31,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 347 [2023-08-27 11:25:31,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 62 transitions, 456 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:31,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 347 [2023-08-27 11:25:31,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:31,911 INFO L124 PetriNetUnfolderBase]: 562/1009 cut-off events. [2023-08-27 11:25:31,911 INFO L125 PetriNetUnfolderBase]: For 2873/2873 co-relation queries the response was YES. [2023-08-27 11:25:31,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3307 conditions, 1009 events. 562/1009 cut-off events. For 2873/2873 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4908 event pairs, 61 based on Foata normal form. 27/1035 useless extension candidates. Maximal degree in co-relation 3278. Up to 298 conditions per place. [2023-08-27 11:25:31,914 INFO L140 encePairwiseOnDemand]: 337/347 looper letters, 81 selfloop transitions, 27 changer transitions 14/126 dead transitions. [2023-08-27 11:25:31,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 126 transitions, 872 flow [2023-08-27 11:25:31,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:25:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:25:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1886 transitions. [2023-08-27 11:25:31,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180891154954556 [2023-08-27 11:25:31,917 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1886 transitions. [2023-08-27 11:25:31,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1886 transitions. [2023-08-27 11:25:31,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:31,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1886 transitions. [2023-08-27 11:25:31,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 145.07692307692307) internal successors, (1886), 13 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 347.0) internal successors, (4858), 14 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,921 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 347.0) internal successors, (4858), 14 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,922 INFO L175 Difference]: Start difference. First operand has 96 places, 62 transitions, 456 flow. Second operand 13 states and 1886 transitions. [2023-08-27 11:25:31,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 126 transitions, 872 flow [2023-08-27 11:25:31,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 126 transitions, 790 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-08-27 11:25:31,928 INFO L231 Difference]: Finished difference. Result has 94 places, 53 transitions, 349 flow [2023-08-27 11:25:31,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=349, PETRI_PLACES=94, PETRI_TRANSITIONS=53} [2023-08-27 11:25:31,929 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 34 predicate places. [2023-08-27 11:25:31,929 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 53 transitions, 349 flow [2023-08-27 11:25:31,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:31,930 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 11:25:31,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 11:25:31,930 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:31,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:31,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1578449933, now seen corresponding path program 2 times [2023-08-27 11:25:31,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:31,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932376743] [2023-08-27 11:25:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:31,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:31,993 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 11:25:31,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:31,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932376743] [2023-08-27 11:25:31,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932376743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:31,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:31,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:25:31,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495907291] [2023-08-27 11:25:31,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:31,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:25:31,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:31,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:25:31,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:25:31,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 347 [2023-08-27 11:25:31,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 53 transitions, 349 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:31,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:31,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 347 [2023-08-27 11:25:31,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:32,127 INFO L124 PetriNetUnfolderBase]: 451/817 cut-off events. [2023-08-27 11:25:32,127 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2023-08-27 11:25:32,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 817 events. 451/817 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3751 event pairs, 61 based on Foata normal form. 9/825 useless extension candidates. Maximal degree in co-relation 2561. Up to 290 conditions per place. [2023-08-27 11:25:32,129 INFO L140 encePairwiseOnDemand]: 338/347 looper letters, 65 selfloop transitions, 13 changer transitions 23/105 dead transitions. [2023-08-27 11:25:32,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 105 transitions, 682 flow [2023-08-27 11:25:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:25:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:25:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1594 transitions. [2023-08-27 11:25:32,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176054493057375 [2023-08-27 11:25:32,134 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1594 transitions. [2023-08-27 11:25:32,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1594 transitions. [2023-08-27 11:25:32,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:32,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1594 transitions. [2023-08-27 11:25:32,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.9090909090909) internal successors, (1594), 11 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 347.0) internal successors, (4164), 12 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,137 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 347.0) internal successors, (4164), 12 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,137 INFO L175 Difference]: Start difference. First operand has 94 places, 53 transitions, 349 flow. Second operand 11 states and 1594 transitions. [2023-08-27 11:25:32,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 105 transitions, 682 flow [2023-08-27 11:25:32,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 608 flow, removed 5 selfloop flow, removed 18 redundant places. [2023-08-27 11:25:32,140 INFO L231 Difference]: Finished difference. Result has 79 places, 47 transitions, 256 flow [2023-08-27 11:25:32,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=256, PETRI_PLACES=79, PETRI_TRANSITIONS=47} [2023-08-27 11:25:32,141 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 19 predicate places. [2023-08-27 11:25:32,141 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 47 transitions, 256 flow [2023-08-27 11:25:32,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:32,141 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 11:25:32,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 11:25:32,141 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:32,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1269158323, now seen corresponding path program 3 times [2023-08-27 11:25:32,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:32,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703939721] [2023-08-27 11:25:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:32,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:32,193 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 11:25:32,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:32,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703939721] [2023-08-27 11:25:32,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703939721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:32,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:32,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:25:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334645043] [2023-08-27 11:25:32,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:32,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:25:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:25:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:25:32,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 347 [2023-08-27 11:25:32,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 47 transitions, 256 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:32,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 347 [2023-08-27 11:25:32,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:32,336 INFO L124 PetriNetUnfolderBase]: 346/640 cut-off events. [2023-08-27 11:25:32,336 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2023-08-27 11:25:32,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 640 events. 346/640 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2751 event pairs, 43 based on Foata normal form. 9/648 useless extension candidates. Maximal degree in co-relation 1901. Up to 134 conditions per place. [2023-08-27 11:25:32,338 INFO L140 encePairwiseOnDemand]: 338/347 looper letters, 48 selfloop transitions, 10 changer transitions 39/101 dead transitions. [2023-08-27 11:25:32,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 590 flow [2023-08-27 11:25:32,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:25:32,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:25:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1734 transitions. [2023-08-27 11:25:32,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164265129682997 [2023-08-27 11:25:32,339 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1734 transitions. [2023-08-27 11:25:32,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1734 transitions. [2023-08-27 11:25:32,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:32,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1734 transitions. [2023-08-27 11:25:32,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.5) internal successors, (1734), 12 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 347.0) internal successors, (4511), 13 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,343 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 347.0) internal successors, (4511), 13 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,343 INFO L175 Difference]: Start difference. First operand has 79 places, 47 transitions, 256 flow. Second operand 12 states and 1734 transitions. [2023-08-27 11:25:32,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 590 flow [2023-08-27 11:25:32,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 101 transitions, 534 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-08-27 11:25:32,345 INFO L231 Difference]: Finished difference. Result has 71 places, 35 transitions, 157 flow [2023-08-27 11:25:32,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=157, PETRI_PLACES=71, PETRI_TRANSITIONS=35} [2023-08-27 11:25:32,345 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 11 predicate places. [2023-08-27 11:25:32,346 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 35 transitions, 157 flow [2023-08-27 11:25:32,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:32,346 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 11:25:32,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 11:25:32,346 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:25:32,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:32,346 INFO L85 PathProgramCache]: Analyzing trace with hash 217528269, now seen corresponding path program 4 times [2023-08-27 11:25:32,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:32,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028817061] [2023-08-27 11:25:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:32,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:32,402 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 11:25:32,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:32,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028817061] [2023-08-27 11:25:32,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028817061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:32,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:32,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:25:32,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74026600] [2023-08-27 11:25:32,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:32,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:25:32,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:32,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:25:32,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:25:32,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 347 [2023-08-27 11:25:32,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 35 transitions, 157 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:32,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 347 [2023-08-27 11:25:32,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:32,513 INFO L124 PetriNetUnfolderBase]: 190/367 cut-off events. [2023-08-27 11:25:32,513 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2023-08-27 11:25:32,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 367 events. 190/367 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1334 event pairs, 43 based on Foata normal form. 9/372 useless extension candidates. Maximal degree in co-relation 1034. Up to 102 conditions per place. [2023-08-27 11:25:32,514 INFO L140 encePairwiseOnDemand]: 338/347 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2023-08-27 11:25:32,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 393 flow [2023-08-27 11:25:32,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:25:32,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:25:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1707 transitions. [2023-08-27 11:25:32,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099423631123919 [2023-08-27 11:25:32,515 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1707 transitions. [2023-08-27 11:25:32,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1707 transitions. [2023-08-27 11:25:32,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:32,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1707 transitions. [2023-08-27 11:25:32,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 142.25) internal successors, (1707), 12 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 347.0) internal successors, (4511), 13 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,519 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 347.0) internal successors, (4511), 13 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,519 INFO L175 Difference]: Start difference. First operand has 71 places, 35 transitions, 157 flow. Second operand 12 states and 1707 transitions. [2023-08-27 11:25:32,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 393 flow [2023-08-27 11:25:32,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 342 flow, removed 1 selfloop flow, removed 15 redundant places. [2023-08-27 11:25:32,520 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-08-27 11:25:32,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-08-27 11:25:32,521 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -9 predicate places. [2023-08-27 11:25:32,521 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-08-27 11:25:32,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:32,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 11:25:32,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 11:25:32,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (16 of 19 remaining) [2023-08-27 11:25:32,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 11:25:32,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 11:25:32,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 11:25:32,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 11:25:32,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 11:25:32,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-27 11:25:32,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-27 11:25:32,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-27 11:25:32,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 11:25:32,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 11:25:32,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 11:25:32,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 11:25:32,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 11:25:32,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 11:25:32,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 11:25:32,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 11:25:32,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 11:25:32,523 INFO L445 BasicCegarLoop]: Path program histogram: [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:32,523 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:25:32,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:32,543 INFO L124 PetriNetUnfolderBase]: 43/326 cut-off events. [2023-08-27 11:25:32,543 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:25:32,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 326 events. 43/326 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1019 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 201. Up to 9 conditions per place. [2023-08-27 11:25:32,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:32,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:32,544 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:25:32,544 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:32,545 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:32,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 185 transitions, 388 flow [2023-08-27 11:25:32,560 INFO L124 PetriNetUnfolderBase]: 43/326 cut-off events. [2023-08-27 11:25:32,560 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:25:32,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 326 events. 43/326 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1019 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 201. Up to 9 conditions per place. [2023-08-27 11:25:32,566 INFO L119 LiptonReduction]: Number of co-enabled transitions 12888 [2023-08-27 11:25:35,268 INFO L134 LiptonReduction]: Checked pairs total: 30068 [2023-08-27 11:25:35,268 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-27 11:25:35,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:25:35,269 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;@485f9729, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:25:35,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:25:35,273 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:25:35,273 INFO L124 PetriNetUnfolderBase]: 17/84 cut-off events. [2023-08-27 11:25:35,273 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 11:25:35,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:35,273 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 11:25:35,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:25:35,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:35,273 INFO L85 PathProgramCache]: Analyzing trace with hash 440662075, now seen corresponding path program 1 times [2023-08-27 11:25:35,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:35,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688475444] [2023-08-27 11:25:35,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:35,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:25:35,280 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:25:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:25:35,287 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:25:35,287 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:25:35,287 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:25:35,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-27 11:25:35,287 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:25:35,288 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:25:35,288 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:25:35,288 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 11:25:35,301 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 11:25:35,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 223 transitions, 476 flow [2023-08-27 11:25:35,331 INFO L124 PetriNetUnfolderBase]: 66/494 cut-off events. [2023-08-27 11:25:35,331 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:25:35,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 494 events. 66/494 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1744 event pairs, 1 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 334. Up to 16 conditions per place. [2023-08-27 11:25:35,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 223 transitions, 476 flow [2023-08-27 11:25:35,337 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 223 transitions, 476 flow [2023-08-27 11:25:35,337 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:25:35,337 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 223 transitions, 476 flow [2023-08-27 11:25:35,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 223 transitions, 476 flow [2023-08-27 11:25:35,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 223 transitions, 476 flow [2023-08-27 11:25:35,363 INFO L124 PetriNetUnfolderBase]: 66/494 cut-off events. [2023-08-27 11:25:35,363 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:25:35,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 494 events. 66/494 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1744 event pairs, 1 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 334. Up to 16 conditions per place. [2023-08-27 11:25:35,373 INFO L119 LiptonReduction]: Number of co-enabled transitions 23544 [2023-08-27 11:25:38,220 INFO L134 LiptonReduction]: Checked pairs total: 57523 [2023-08-27 11:25:38,221 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-08-27 11:25:38,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:25:38,222 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;@485f9729, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:25:38,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-27 11:25:38,223 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:25:38,223 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-08-27 11:25:38,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:25:38,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:38,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 11:25:38,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:25:38,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash 54720, now seen corresponding path program 1 times [2023-08-27 11:25:38,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:38,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292551853] [2023-08-27 11:25:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:38,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:38,234 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 11:25:38,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:38,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292551853] [2023-08-27 11:25:38,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292551853] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:38,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:38,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:25:38,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647386800] [2023-08-27 11:25:38,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:38,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:25:38,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:25:38,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:25:38,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 411 [2023-08-27 11:25:38,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 96 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:38,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:38,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 411 [2023-08-27 11:25:38,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:46,211 INFO L124 PetriNetUnfolderBase]: 123381/175651 cut-off events. [2023-08-27 11:25:46,212 INFO L125 PetriNetUnfolderBase]: For 2606/2606 co-relation queries the response was YES. [2023-08-27 11:25:46,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347279 conditions, 175651 events. 123381/175651 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 6199. Compared 1403896 event pairs, 78218 based on Foata normal form. 20258/132912 useless extension candidates. Maximal degree in co-relation 18539. Up to 169792 conditions per place. [2023-08-27 11:25:46,868 INFO L140 encePairwiseOnDemand]: 382/411 looper letters, 78 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-27 11:25:46,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 370 flow [2023-08-27 11:25:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:25:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:25:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-08-27 11:25:46,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393349553933495 [2023-08-27 11:25:46,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-08-27 11:25:46,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-08-27 11:25:46,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:46,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-08-27 11:25:46,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:46,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:46,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:46,871 INFO L175 Difference]: Start difference. First operand has 78 places, 96 transitions, 222 flow. Second operand 3 states and 665 transitions. [2023-08-27 11:25:46,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 370 flow [2023-08-27 11:25:46,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 90 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:25:46,873 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 200 flow [2023-08-27 11:25:46,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-08-27 11:25:46,873 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-08-27 11:25:46,873 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 200 flow [2023-08-27 11:25:46,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:46,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:46,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:25:46,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-27 11:25:46,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:25:46,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1001413007, now seen corresponding path program 1 times [2023-08-27 11:25:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:46,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854169365] [2023-08-27 11:25:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:46,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:25:46,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:46,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854169365] [2023-08-27 11:25:46,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854169365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:25:46,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020189262] [2023-08-27 11:25:46,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:46,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:25:46,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:25:46,891 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 11:25:46,892 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 11:25:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:46,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:25:46,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:25:46,979 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 11:25:46,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:25:46,990 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 11:25:46,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020189262] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:25:46,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:25:46,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 11:25:46,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403040267] [2023-08-27 11:25:46,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:25:46,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:46,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:46,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:46,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:46,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 411 [2023-08-27 11:25:46,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:46,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:46,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 411 [2023-08-27 11:25:46,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:49,019 INFO L124 PetriNetUnfolderBase]: 26863/40847 cut-off events. [2023-08-27 11:25:49,019 INFO L125 PetriNetUnfolderBase]: For 10830/10830 co-relation queries the response was YES. [2023-08-27 11:25:49,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92322 conditions, 40847 events. 26863/40847 cut-off events. For 10830/10830 co-relation queries the response was YES. Maximal size of possible extension queue 1719. Compared 318031 event pairs, 0 based on Foata normal form. 2715/31490 useless extension candidates. Maximal degree in co-relation 9132. Up to 19044 conditions per place. [2023-08-27 11:25:49,171 INFO L140 encePairwiseOnDemand]: 403/411 looper letters, 160 selfloop transitions, 6 changer transitions 0/175 dead transitions. [2023-08-27 11:25:49,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 175 transitions, 717 flow [2023-08-27 11:25:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:25:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:25:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1468 transitions. [2023-08-27 11:25:49,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102537365311088 [2023-08-27 11:25:49,173 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1468 transitions. [2023-08-27 11:25:49,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1468 transitions. [2023-08-27 11:25:49,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:49,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1468 transitions. [2023-08-27 11:25:49,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.71428571428572) internal successors, (1468), 7 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:49,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:49,176 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:49,176 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 200 flow. Second operand 7 states and 1468 transitions. [2023-08-27 11:25:49,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 175 transitions, 717 flow [2023-08-27 11:25:49,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 175 transitions, 709 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 11:25:49,184 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 153 flow [2023-08-27 11:25:49,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2023-08-27 11:25:49,184 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2023-08-27 11:25:49,184 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 153 flow [2023-08-27 11:25:49,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:49,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:49,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:49,190 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 11:25:49,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:25:49,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:25:49,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:49,385 INFO L85 PathProgramCache]: Analyzing trace with hash -970146711, now seen corresponding path program 1 times [2023-08-27 11:25:49,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:49,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023687768] [2023-08-27 11:25:49,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:49,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:49,410 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 11:25:49,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:49,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023687768] [2023-08-27 11:25:49,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023687768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:49,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:49,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:25:49,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263901313] [2023-08-27 11:25:49,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:49,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:25:49,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:49,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:25:49,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:25:49,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 411 [2023-08-27 11:25:49,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:49,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:49,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 411 [2023-08-27 11:25:49,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:51,272 INFO L124 PetriNetUnfolderBase]: 27769/39453 cut-off events. [2023-08-27 11:25:51,272 INFO L125 PetriNetUnfolderBase]: For 8980/8980 co-relation queries the response was YES. [2023-08-27 11:25:51,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90226 conditions, 39453 events. 27769/39453 cut-off events. For 8980/8980 co-relation queries the response was YES. Maximal size of possible extension queue 1775. Compared 273815 event pairs, 13654 based on Foata normal form. 0/27529 useless extension candidates. Maximal degree in co-relation 78336. Up to 38435 conditions per place. [2023-08-27 11:25:51,401 INFO L140 encePairwiseOnDemand]: 401/411 looper letters, 63 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2023-08-27 11:25:51,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 353 flow [2023-08-27 11:25:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:25:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:25:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2023-08-27 11:25:51,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48742903487429035 [2023-08-27 11:25:51,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2023-08-27 11:25:51,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2023-08-27 11:25:51,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:51,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2023-08-27 11:25:51,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:51,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:51,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:51,404 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 153 flow. Second operand 3 states and 601 transitions. [2023-08-27 11:25:51,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 353 flow [2023-08-27 11:25:51,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 330 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 11:25:51,408 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 176 flow [2023-08-27 11:25:51,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2023-08-27 11:25:51,408 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2023-08-27 11:25:51,408 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 176 flow [2023-08-27 11:25:51,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:51,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:51,409 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:25:51,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 11:25:51,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:25:51,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:51,409 INFO L85 PathProgramCache]: Analyzing trace with hash -251951861, now seen corresponding path program 1 times [2023-08-27 11:25:51,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:51,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982370606] [2023-08-27 11:25:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:51,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:51,427 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 11:25:51,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982370606] [2023-08-27 11:25:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982370606] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:25:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656138980] [2023-08-27 11:25:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:51,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:25:51,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:25:51,428 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 11:25:51,428 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 11:25:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:51,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 11:25:51,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:25:51,512 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 11:25:51,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:25:51,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656138980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:51,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:25:51,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 11:25:51,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607824966] [2023-08-27 11:25:51,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:51,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:25:51,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:51,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:25:51,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:25:51,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 411 [2023-08-27 11:25:51,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:51,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:51,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 411 [2023-08-27 11:25:51,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:52,925 INFO L124 PetriNetUnfolderBase]: 19819/29304 cut-off events. [2023-08-27 11:25:52,925 INFO L125 PetriNetUnfolderBase]: For 5272/5356 co-relation queries the response was YES. [2023-08-27 11:25:52,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65261 conditions, 29304 events. 19819/29304 cut-off events. For 5272/5356 co-relation queries the response was YES. Maximal size of possible extension queue 1273. Compared 208711 event pairs, 13024 based on Foata normal form. 0/23785 useless extension candidates. Maximal degree in co-relation 37894. Up to 28050 conditions per place. [2023-08-27 11:25:53,050 INFO L140 encePairwiseOnDemand]: 408/411 looper letters, 59 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-27 11:25:53,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 319 flow [2023-08-27 11:25:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:25:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:25:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 795 transitions. [2023-08-27 11:25:53,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835766423357664 [2023-08-27 11:25:53,052 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 795 transitions. [2023-08-27 11:25:53,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 795 transitions. [2023-08-27 11:25:53,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:53,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 795 transitions. [2023-08-27 11:25:53,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 198.75) internal successors, (795), 4 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:53,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 411.0) internal successors, (2055), 5 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:53,054 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 411.0) internal successors, (2055), 5 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:53,054 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 176 flow. Second operand 4 states and 795 transitions. [2023-08-27 11:25:53,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 319 flow [2023-08-27 11:25:53,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:25:53,057 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 168 flow [2023-08-27 11:25:53,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-08-27 11:25:53,057 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2023-08-27 11:25:53,057 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 168 flow [2023-08-27 11:25:53,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:53,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:53,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:53,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 11:25:53,261 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,SelfDestructingSolverStorable39 [2023-08-27 11:25:53,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:25:53,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:53,262 INFO L85 PathProgramCache]: Analyzing trace with hash 840360669, now seen corresponding path program 1 times [2023-08-27 11:25:53,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:53,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016598740] [2023-08-27 11:25:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:53,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:53,291 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 11:25:53,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:53,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016598740] [2023-08-27 11:25:53,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016598740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:53,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:53,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:25:53,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535288223] [2023-08-27 11:25:53,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:53,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:25:53,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:25:53,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:25:53,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 411 [2023-08-27 11:25:53,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:53,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:53,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 411 [2023-08-27 11:25:53,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:55,294 INFO L124 PetriNetUnfolderBase]: 28862/42218 cut-off events. [2023-08-27 11:25:55,294 INFO L125 PetriNetUnfolderBase]: For 8722/8862 co-relation queries the response was YES. [2023-08-27 11:25:55,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95085 conditions, 42218 events. 28862/42218 cut-off events. For 8722/8862 co-relation queries the response was YES. Maximal size of possible extension queue 1990. Compared 307604 event pairs, 6628 based on Foata normal form. 30/35992 useless extension candidates. Maximal degree in co-relation 94994. Up to 23949 conditions per place. [2023-08-27 11:25:55,466 INFO L140 encePairwiseOnDemand]: 390/411 looper letters, 144 selfloop transitions, 30 changer transitions 0/182 dead transitions. [2023-08-27 11:25:55,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 182 transitions, 885 flow [2023-08-27 11:25:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:25:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:25:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1384 transitions. [2023-08-27 11:25:55,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481056656239138 [2023-08-27 11:25:55,468 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1384 transitions. [2023-08-27 11:25:55,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1384 transitions. [2023-08-27 11:25:55,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:55,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1384 transitions. [2023-08-27 11:25:55,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 197.71428571428572) internal successors, (1384), 7 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:55,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:55,470 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:55,471 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 168 flow. Second operand 7 states and 1384 transitions. [2023-08-27 11:25:55,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 182 transitions, 885 flow [2023-08-27 11:25:55,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 182 transitions, 878 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:25:55,474 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 427 flow [2023-08-27 11:25:55,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2023-08-27 11:25:55,474 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2023-08-27 11:25:55,474 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 427 flow [2023-08-27 11:25:55,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:55,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:55,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:55,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 11:25:55,475 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:25:55,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:55,475 INFO L85 PathProgramCache]: Analyzing trace with hash 840360596, now seen corresponding path program 1 times [2023-08-27 11:25:55,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:55,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574015799] [2023-08-27 11:25:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:55,499 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 11:25:55,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:55,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574015799] [2023-08-27 11:25:55,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574015799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:55,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:55,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:25:55,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982352985] [2023-08-27 11:25:55,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:55,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:25:55,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:55,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:25:55,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:25:55,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 411 [2023-08-27 11:25:55,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:55,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:55,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 411 [2023-08-27 11:25:55,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:58,436 INFO L124 PetriNetUnfolderBase]: 29978/44927 cut-off events. [2023-08-27 11:25:58,437 INFO L125 PetriNetUnfolderBase]: For 43265/43812 co-relation queries the response was YES. [2023-08-27 11:25:58,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129629 conditions, 44927 events. 29978/44927 cut-off events. For 43265/43812 co-relation queries the response was YES. Maximal size of possible extension queue 2143. Compared 344791 event pairs, 6097 based on Foata normal form. 2025/46909 useless extension candidates. Maximal degree in co-relation 129532. Up to 27612 conditions per place. [2023-08-27 11:25:58,643 INFO L140 encePairwiseOnDemand]: 390/411 looper letters, 164 selfloop transitions, 42 changer transitions 0/214 dead transitions. [2023-08-27 11:25:58,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 214 transitions, 1400 flow [2023-08-27 11:25:58,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:25:58,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:25:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1384 transitions. [2023-08-27 11:25:58,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481056656239138 [2023-08-27 11:25:58,645 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1384 transitions. [2023-08-27 11:25:58,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1384 transitions. [2023-08-27 11:25:58,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:58,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1384 transitions. [2023-08-27 11:25:58,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 197.71428571428572) internal successors, (1384), 7 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:58,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:58,648 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:58,648 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 427 flow. Second operand 7 states and 1384 transitions. [2023-08-27 11:25:58,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 214 transitions, 1400 flow [2023-08-27 11:25:58,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 214 transitions, 1394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:25:58,695 INFO L231 Difference]: Finished difference. Result has 87 places, 117 transitions, 903 flow [2023-08-27 11:25:58,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=903, PETRI_PLACES=87, PETRI_TRANSITIONS=117} [2023-08-27 11:25:58,695 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2023-08-27 11:25:58,695 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 117 transitions, 903 flow [2023-08-27 11:25:58,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:58,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:58,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:58,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-27 11:25:58,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:25:58,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash -576587858, now seen corresponding path program 1 times [2023-08-27 11:25:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:58,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838691511] [2023-08-27 11:25:58,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:58,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:58,722 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 11:25:58,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:58,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838691511] [2023-08-27 11:25:58,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838691511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:58,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:58,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:25:58,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764290451] [2023-08-27 11:25:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:58,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:25:58,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:58,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:25:58,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:25:58,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 411 [2023-08-27 11:25:58,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 117 transitions, 903 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:58,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:58,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 411 [2023-08-27 11:25:58,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:02,481 INFO L124 PetriNetUnfolderBase]: 36859/54644 cut-off events. [2023-08-27 11:26:02,481 INFO L125 PetriNetUnfolderBase]: For 124959/125047 co-relation queries the response was YES. [2023-08-27 11:26:02,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185742 conditions, 54644 events. 36859/54644 cut-off events. For 124959/125047 co-relation queries the response was YES. Maximal size of possible extension queue 2551. Compared 417345 event pairs, 8287 based on Foata normal form. 1146/55776 useless extension candidates. Maximal degree in co-relation 185634. Up to 34891 conditions per place. [2023-08-27 11:26:02,779 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 215 selfloop transitions, 59 changer transitions 0/282 dead transitions. [2023-08-27 11:26:02,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 282 transitions, 2467 flow [2023-08-27 11:26:02,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:26:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:26:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1385 transitions. [2023-08-27 11:26:02,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48140424052832814 [2023-08-27 11:26:02,781 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1385 transitions. [2023-08-27 11:26:02,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1385 transitions. [2023-08-27 11:26:02,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:02,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1385 transitions. [2023-08-27 11:26:02,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:02,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:02,784 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:02,784 INFO L175 Difference]: Start difference. First operand has 87 places, 117 transitions, 903 flow. Second operand 7 states and 1385 transitions. [2023-08-27 11:26:02,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 282 transitions, 2467 flow [2023-08-27 11:26:03,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 282 transitions, 2454 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:26:03,275 INFO L231 Difference]: Finished difference. Result has 96 places, 159 transitions, 1602 flow [2023-08-27 11:26:03,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1602, PETRI_PLACES=96, PETRI_TRANSITIONS=159} [2023-08-27 11:26:03,275 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2023-08-27 11:26:03,275 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 159 transitions, 1602 flow [2023-08-27 11:26:03,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:03,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:03,276 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:26:03,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-27 11:26:03,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:03,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:03,276 INFO L85 PathProgramCache]: Analyzing trace with hash -576587859, now seen corresponding path program 1 times [2023-08-27 11:26:03,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:03,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279915680] [2023-08-27 11:26:03,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:03,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:03,302 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 11:26:03,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:03,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279915680] [2023-08-27 11:26:03,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279915680] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:03,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:03,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:26:03,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664266936] [2023-08-27 11:26:03,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:03,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:26:03,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:26:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:26:03,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 411 [2023-08-27 11:26:03,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 159 transitions, 1602 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:03,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:03,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 411 [2023-08-27 11:26:03,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:07,423 INFO L124 PetriNetUnfolderBase]: 34618/51680 cut-off events. [2023-08-27 11:26:07,423 INFO L125 PetriNetUnfolderBase]: For 198184/198288 co-relation queries the response was YES. [2023-08-27 11:26:07,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199446 conditions, 51680 events. 34618/51680 cut-off events. For 198184/198288 co-relation queries the response was YES. Maximal size of possible extension queue 2439. Compared 397677 event pairs, 8281 based on Foata normal form. 1152/52818 useless extension candidates. Maximal degree in co-relation 199331. Up to 33653 conditions per place. [2023-08-27 11:26:07,771 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 201 selfloop transitions, 61 changer transitions 0/270 dead transitions. [2023-08-27 11:26:07,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 270 transitions, 2664 flow [2023-08-27 11:26:07,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:26:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:26:07,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1385 transitions. [2023-08-27 11:26:07,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48140424052832814 [2023-08-27 11:26:07,773 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1385 transitions. [2023-08-27 11:26:07,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1385 transitions. [2023-08-27 11:26:07,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:07,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1385 transitions. [2023-08-27 11:26:07,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 197.85714285714286) internal successors, (1385), 7 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:07,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:07,776 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:07,776 INFO L175 Difference]: Start difference. First operand has 96 places, 159 transitions, 1602 flow. Second operand 7 states and 1385 transitions. [2023-08-27 11:26:07,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 270 transitions, 2664 flow [2023-08-27 11:26:08,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 270 transitions, 2631 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:26:08,444 INFO L231 Difference]: Finished difference. Result has 101 places, 163 transitions, 1729 flow [2023-08-27 11:26:08,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1729, PETRI_PLACES=101, PETRI_TRANSITIONS=163} [2023-08-27 11:26:08,444 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2023-08-27 11:26:08,444 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 163 transitions, 1729 flow [2023-08-27 11:26:08,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:08,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:08,444 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:26:08,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-27 11:26:08,445 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:08,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:08,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1046700074, now seen corresponding path program 1 times [2023-08-27 11:26:08,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:08,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231709676] [2023-08-27 11:26:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:08,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:26:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:08,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231709676] [2023-08-27 11:26:08,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231709676] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:08,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:08,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:26:08,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954112256] [2023-08-27 11:26:08,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:08,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:26:08,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:08,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:26:08,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:26:08,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 411 [2023-08-27 11:26:08,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 163 transitions, 1729 flow. Second operand has 5 states, 5 states have (on average 175.4) internal successors, (877), 5 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:08,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:08,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 411 [2023-08-27 11:26:08,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:13,316 INFO L124 PetriNetUnfolderBase]: 39553/58660 cut-off events. [2023-08-27 11:26:13,317 INFO L125 PetriNetUnfolderBase]: For 270166/270387 co-relation queries the response was YES. [2023-08-27 11:26:13,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233695 conditions, 58660 events. 39553/58660 cut-off events. For 270166/270387 co-relation queries the response was YES. Maximal size of possible extension queue 2721. Compared 450547 event pairs, 10135 based on Foata normal form. 1221/59849 useless extension candidates. Maximal degree in co-relation 233578. Up to 40688 conditions per place. [2023-08-27 11:26:13,763 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 236 selfloop transitions, 73 changer transitions 0/317 dead transitions. [2023-08-27 11:26:13,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 317 transitions, 3649 flow [2023-08-27 11:26:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:26:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:26:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1365 transitions. [2023-08-27 11:26:13,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744525547445255 [2023-08-27 11:26:13,765 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1365 transitions. [2023-08-27 11:26:13,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1365 transitions. [2023-08-27 11:26:13,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:13,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1365 transitions. [2023-08-27 11:26:13,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:13,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:13,768 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:13,768 INFO L175 Difference]: Start difference. First operand has 101 places, 163 transitions, 1729 flow. Second operand 7 states and 1365 transitions. [2023-08-27 11:26:13,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 317 transitions, 3649 flow [2023-08-27 11:26:14,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 317 transitions, 3632 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:26:14,508 INFO L231 Difference]: Finished difference. Result has 109 places, 206 transitions, 2664 flow [2023-08-27 11:26:14,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2664, PETRI_PLACES=109, PETRI_TRANSITIONS=206} [2023-08-27 11:26:14,508 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 31 predicate places. [2023-08-27 11:26:14,509 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 206 transitions, 2664 flow [2023-08-27 11:26:14,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.4) internal successors, (877), 5 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:14,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:14,509 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:26:14,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-27 11:26:14,509 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:14,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:14,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1046699923, now seen corresponding path program 1 times [2023-08-27 11:26:14,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:14,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889048933] [2023-08-27 11:26:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:14,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:26:14,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:14,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889048933] [2023-08-27 11:26:14,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889048933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:14,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:14,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:26:14,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866011468] [2023-08-27 11:26:14,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:14,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:26:14,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:14,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:26:14,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:26:14,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 411 [2023-08-27 11:26:14,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 206 transitions, 2664 flow. Second operand has 5 states, 5 states have (on average 175.4) internal successors, (877), 5 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:14,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:14,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 411 [2023-08-27 11:26:14,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:19,323 INFO L124 PetriNetUnfolderBase]: 36923/55046 cut-off events. [2023-08-27 11:26:19,323 INFO L125 PetriNetUnfolderBase]: For 339660/339953 co-relation queries the response was YES. [2023-08-27 11:26:19,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229978 conditions, 55046 events. 36923/55046 cut-off events. For 339660/339953 co-relation queries the response was YES. Maximal size of possible extension queue 2595. Compared 423558 event pairs, 9895 based on Foata normal form. 1257/56271 useless extension candidates. Maximal degree in co-relation 229854. Up to 38849 conditions per place. [2023-08-27 11:26:19,723 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 224 selfloop transitions, 73 changer transitions 0/305 dead transitions. [2023-08-27 11:26:19,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 305 transitions, 3782 flow [2023-08-27 11:26:19,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:26:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:26:19,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1365 transitions. [2023-08-27 11:26:19,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744525547445255 [2023-08-27 11:26:19,725 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1365 transitions. [2023-08-27 11:26:19,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1365 transitions. [2023-08-27 11:26:19,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:19,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1365 transitions. [2023-08-27 11:26:19,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:19,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:19,728 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:19,728 INFO L175 Difference]: Start difference. First operand has 109 places, 206 transitions, 2664 flow. Second operand 7 states and 1365 transitions. [2023-08-27 11:26:19,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 305 transitions, 3782 flow [2023-08-27 11:26:21,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 305 transitions, 3721 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-27 11:26:21,086 INFO L231 Difference]: Finished difference. Result has 114 places, 202 transitions, 2650 flow [2023-08-27 11:26:21,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2650, PETRI_PLACES=114, PETRI_TRANSITIONS=202} [2023-08-27 11:26:21,087 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2023-08-27 11:26:21,087 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 202 transitions, 2650 flow [2023-08-27 11:26:21,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.4) internal successors, (877), 5 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:21,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:21,087 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 11:26:21,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-27 11:26:21,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:21,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:21,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2106754763, now seen corresponding path program 1 times [2023-08-27 11:26:21,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:21,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870731754] [2023-08-27 11:26:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:21,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:21,139 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 11:26:21,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870731754] [2023-08-27 11:26:21,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870731754] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:21,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:21,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:26:21,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091630417] [2023-08-27 11:26:21,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:21,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:26:21,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:26:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:26:21,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 411 [2023-08-27 11:26:21,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 202 transitions, 2650 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:21,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:21,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 411 [2023-08-27 11:26:21,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:22,230 INFO L124 PetriNetUnfolderBase]: 7118/12172 cut-off events. [2023-08-27 11:26:22,230 INFO L125 PetriNetUnfolderBase]: For 70417/70606 co-relation queries the response was YES. [2023-08-27 11:26:22,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47053 conditions, 12172 events. 7118/12172 cut-off events. For 70417/70606 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 87697 event pairs, 2458 based on Foata normal form. 1566/13711 useless extension candidates. Maximal degree in co-relation 46927. Up to 7177 conditions per place. [2023-08-27 11:26:22,291 INFO L140 encePairwiseOnDemand]: 396/411 looper letters, 109 selfloop transitions, 17 changer transitions 0/137 dead transitions. [2023-08-27 11:26:22,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 137 transitions, 1556 flow [2023-08-27 11:26:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:26:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:26:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2023-08-27 11:26:22,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47364152473641524 [2023-08-27 11:26:22,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2023-08-27 11:26:22,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2023-08-27 11:26:22,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:22,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2023-08-27 11:26:22,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:22,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:22,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:22,294 INFO L175 Difference]: Start difference. First operand has 114 places, 202 transitions, 2650 flow. Second operand 3 states and 584 transitions. [2023-08-27 11:26:22,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 137 transitions, 1556 flow [2023-08-27 11:26:22,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 137 transitions, 1490 flow, removed 28 selfloop flow, removed 7 redundant places. [2023-08-27 11:26:22,415 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 978 flow [2023-08-27 11:26:22,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=978, PETRI_PLACES=102, PETRI_TRANSITIONS=105} [2023-08-27 11:26:22,415 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 24 predicate places. [2023-08-27 11:26:22,415 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 978 flow [2023-08-27 11:26:22,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:22,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:22,416 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] [2023-08-27 11:26:22,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-27 11:26:22,416 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:22,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1507672089, now seen corresponding path program 1 times [2023-08-27 11:26:22,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:22,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700695636] [2023-08-27 11:26:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:22,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:26:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:22,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700695636] [2023-08-27 11:26:22,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700695636] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:26:22,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123509628] [2023-08-27 11:26:22,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:22,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:26:22,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:26:22,467 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 11:26:22,469 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 11:26:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:22,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:26:22,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:26:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:26:22,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:26:22,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123509628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:22,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:26:22,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-27 11:26:22,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830616773] [2023-08-27 11:26:22,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:22,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:26:22,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:22,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:26:22,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:26:22,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 411 [2023-08-27 11:26:22,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 105 transitions, 978 flow. Second operand has 5 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:22,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:22,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 411 [2023-08-27 11:26:22,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:23,760 INFO L124 PetriNetUnfolderBase]: 8382/14213 cut-off events. [2023-08-27 11:26:23,761 INFO L125 PetriNetUnfolderBase]: For 107204/107456 co-relation queries the response was YES. [2023-08-27 11:26:23,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59522 conditions, 14213 events. 8382/14213 cut-off events. For 107204/107456 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 103319 event pairs, 2039 based on Foata normal form. 743/14945 useless extension candidates. Maximal degree in co-relation 59392. Up to 6145 conditions per place. [2023-08-27 11:26:23,841 INFO L140 encePairwiseOnDemand]: 389/411 looper letters, 193 selfloop transitions, 73 changer transitions 7/281 dead transitions. [2023-08-27 11:26:23,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 281 transitions, 2945 flow [2023-08-27 11:26:23,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:26:23,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:26:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1404 transitions. [2023-08-27 11:26:23,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880083420229406 [2023-08-27 11:26:23,844 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1404 transitions. [2023-08-27 11:26:23,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1404 transitions. [2023-08-27 11:26:23,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:23,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1404 transitions. [2023-08-27 11:26:23,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 200.57142857142858) internal successors, (1404), 7 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:23,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:23,847 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 411.0) internal successors, (3288), 8 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:23,847 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 978 flow. Second operand 7 states and 1404 transitions. [2023-08-27 11:26:23,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 281 transitions, 2945 flow [2023-08-27 11:26:23,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 281 transitions, 2873 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 11:26:23,893 INFO L231 Difference]: Finished difference. Result has 111 places, 163 transitions, 2062 flow [2023-08-27 11:26:23,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2062, PETRI_PLACES=111, PETRI_TRANSITIONS=163} [2023-08-27 11:26:23,893 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 33 predicate places. [2023-08-27 11:26:23,893 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 163 transitions, 2062 flow [2023-08-27 11:26:23,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:23,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:23,894 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] [2023-08-27 11:26:23,900 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 11:26:24,095 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,SelfDestructingSolverStorable47 [2023-08-27 11:26:24,096 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:24,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash -786292186, now seen corresponding path program 1 times [2023-08-27 11:26:24,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:24,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639066494] [2023-08-27 11:26:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:24,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:26:24,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:24,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639066494] [2023-08-27 11:26:24,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639066494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:24,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:24,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:26:24,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203743193] [2023-08-27 11:26:24,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:24,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:26:24,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:24,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:26:24,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:26:24,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 411 [2023-08-27 11:26:24,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 163 transitions, 2062 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:24,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:24,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 411 [2023-08-27 11:26:24,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:25,846 INFO L124 PetriNetUnfolderBase]: 11279/19679 cut-off events. [2023-08-27 11:26:25,846 INFO L125 PetriNetUnfolderBase]: For 178552/178867 co-relation queries the response was YES. [2023-08-27 11:26:25,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89902 conditions, 19679 events. 11279/19679 cut-off events. For 178552/178867 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 160428 event pairs, 4624 based on Foata normal form. 432/20111 useless extension candidates. Maximal degree in co-relation 89761. Up to 13201 conditions per place. [2023-08-27 11:26:25,949 INFO L140 encePairwiseOnDemand]: 399/411 looper letters, 236 selfloop transitions, 26 changer transitions 0/277 dead transitions. [2023-08-27 11:26:25,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 277 transitions, 4031 flow [2023-08-27 11:26:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:26:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:26:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2023-08-27 11:26:25,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47364152473641524 [2023-08-27 11:26:25,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2023-08-27 11:26:25,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2023-08-27 11:26:25,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:25,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2023-08-27 11:26:25,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:25,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:25,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:25,951 INFO L175 Difference]: Start difference. First operand has 111 places, 163 transitions, 2062 flow. Second operand 3 states and 584 transitions. [2023-08-27 11:26:25,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 277 transitions, 4031 flow [2023-08-27 11:26:26,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 277 transitions, 4003 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-08-27 11:26:26,234 INFO L231 Difference]: Finished difference. Result has 114 places, 184 transitions, 2275 flow [2023-08-27 11:26:26,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2275, PETRI_PLACES=114, PETRI_TRANSITIONS=184} [2023-08-27 11:26:26,234 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2023-08-27 11:26:26,235 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 184 transitions, 2275 flow [2023-08-27 11:26:26,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:26,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:26,235 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] [2023-08-27 11:26:26,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-27 11:26:26,235 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:26,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2029675892, now seen corresponding path program 2 times [2023-08-27 11:26:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:26,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397735862] [2023-08-27 11:26:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:26,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:26,283 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 11:26:26,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:26,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397735862] [2023-08-27 11:26:26,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397735862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:26,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:26,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:26:26,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108276609] [2023-08-27 11:26:26,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:26,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:26:26,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:26,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:26:26,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:26:26,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:26:26,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 184 transitions, 2275 flow. Second operand has 7 states, 7 states have (on average 170.28571428571428) internal successors, (1192), 7 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:26,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:26,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:26:26,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:28,292 INFO L124 PetriNetUnfolderBase]: 10721/18774 cut-off events. [2023-08-27 11:26:28,292 INFO L125 PetriNetUnfolderBase]: For 187472/188570 co-relation queries the response was YES. [2023-08-27 11:26:28,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93283 conditions, 18774 events. 10721/18774 cut-off events. For 187472/188570 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 151658 event pairs, 2220 based on Foata normal form. 96/18764 useless extension candidates. Maximal degree in co-relation 93135. Up to 15133 conditions per place. [2023-08-27 11:26:28,397 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 262 selfloop transitions, 39 changer transitions 0/309 dead transitions. [2023-08-27 11:26:28,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 309 transitions, 3740 flow [2023-08-27 11:26:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:26:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:26:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1837 transitions. [2023-08-27 11:26:28,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44695863746958636 [2023-08-27 11:26:28,399 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1837 transitions. [2023-08-27 11:26:28,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1837 transitions. [2023-08-27 11:26:28,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:28,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1837 transitions. [2023-08-27 11:26:28,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 183.7) internal successors, (1837), 10 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 11:26:28,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:28,407 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:28,407 INFO L175 Difference]: Start difference. First operand has 114 places, 184 transitions, 2275 flow. Second operand 10 states and 1837 transitions. [2023-08-27 11:26:28,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 309 transitions, 3740 flow [2023-08-27 11:26:28,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 309 transitions, 3686 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:26:28,598 INFO L231 Difference]: Finished difference. Result has 125 places, 198 transitions, 2622 flow [2023-08-27 11:26:28,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2622, PETRI_PLACES=125, PETRI_TRANSITIONS=198} [2023-08-27 11:26:28,598 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 47 predicate places. [2023-08-27 11:26:28,598 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 198 transitions, 2622 flow [2023-08-27 11:26:28,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.28571428571428) internal successors, (1192), 7 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:28,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:28,599 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] [2023-08-27 11:26:28,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-27 11:26:28,599 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:28,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash 528071918, now seen corresponding path program 1 times [2023-08-27 11:26:28,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:28,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870941985] [2023-08-27 11:26:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:28,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:28,638 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 11:26:28,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:28,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870941985] [2023-08-27 11:26:28,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870941985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:28,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:28,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:26:28,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368318668] [2023-08-27 11:26:28,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:28,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:26:28,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:28,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:26:28,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:26:28,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:26:28,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 198 transitions, 2622 flow. Second operand has 7 states, 7 states have (on average 170.28571428571428) internal successors, (1192), 7 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:28,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:28,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:26:28,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:30,729 INFO L124 PetriNetUnfolderBase]: 10594/18596 cut-off events. [2023-08-27 11:26:30,729 INFO L125 PetriNetUnfolderBase]: For 212875/213382 co-relation queries the response was YES. [2023-08-27 11:26:30,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94037 conditions, 18596 events. 10594/18596 cut-off events. For 212875/213382 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 150450 event pairs, 1941 based on Foata normal form. 99/18643 useless extension candidates. Maximal degree in co-relation 93885. Up to 14687 conditions per place. [2023-08-27 11:26:30,852 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 250 selfloop transitions, 45 changer transitions 0/303 dead transitions. [2023-08-27 11:26:30,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 303 transitions, 3845 flow [2023-08-27 11:26:30,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:26:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:26:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1820 transitions. [2023-08-27 11:26:30,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44282238442822386 [2023-08-27 11:26:30,854 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1820 transitions. [2023-08-27 11:26:30,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1820 transitions. [2023-08-27 11:26:30,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:30,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1820 transitions. [2023-08-27 11:26:30,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 182.0) internal successors, (1820), 10 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:30,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:30,858 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:30,858 INFO L175 Difference]: Start difference. First operand has 125 places, 198 transitions, 2622 flow. Second operand 10 states and 1820 transitions. [2023-08-27 11:26:30,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 303 transitions, 3845 flow [2023-08-27 11:26:31,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 303 transitions, 3803 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-27 11:26:31,108 INFO L231 Difference]: Finished difference. Result has 133 places, 208 transitions, 2870 flow [2023-08-27 11:26:31,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2870, PETRI_PLACES=133, PETRI_TRANSITIONS=208} [2023-08-27 11:26:31,108 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 55 predicate places. [2023-08-27 11:26:31,108 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 208 transitions, 2870 flow [2023-08-27 11:26:31,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.28571428571428) internal successors, (1192), 7 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:31,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:31,109 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] [2023-08-27 11:26:31,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-27 11:26:31,109 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:31,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:31,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1375070649, now seen corresponding path program 1 times [2023-08-27 11:26:31,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:31,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026696584] [2023-08-27 11:26:31,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:31,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:31,152 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 11:26:31,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:31,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026696584] [2023-08-27 11:26:31,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026696584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:31,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:31,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:26:31,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558675871] [2023-08-27 11:26:31,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:31,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:26:31,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:31,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:26:31,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:26:31,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:26:31,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 208 transitions, 2870 flow. Second operand has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:31,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:31,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:26:31,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:33,278 INFO L124 PetriNetUnfolderBase]: 10604/18637 cut-off events. [2023-08-27 11:26:33,279 INFO L125 PetriNetUnfolderBase]: For 234874/235336 co-relation queries the response was YES. [2023-08-27 11:26:33,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95917 conditions, 18637 events. 10604/18637 cut-off events. For 234874/235336 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 151582 event pairs, 1942 based on Foata normal form. 39/18576 useless extension candidates. Maximal degree in co-relation 95755. Up to 13666 conditions per place. [2023-08-27 11:26:33,389 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 270 selfloop transitions, 69 changer transitions 0/347 dead transitions. [2023-08-27 11:26:33,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 347 transitions, 4514 flow [2023-08-27 11:26:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:26:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:26:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2015 transitions. [2023-08-27 11:26:33,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44569785445697857 [2023-08-27 11:26:33,391 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2015 transitions. [2023-08-27 11:26:33,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2015 transitions. [2023-08-27 11:26:33,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:33,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2015 transitions. [2023-08-27 11:26:33,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 183.1818181818182) internal successors, (2015), 11 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:33,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 411.0) internal successors, (4932), 12 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:33,394 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 411.0) internal successors, (4932), 12 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:33,394 INFO L175 Difference]: Start difference. First operand has 133 places, 208 transitions, 2870 flow. Second operand 11 states and 2015 transitions. [2023-08-27 11:26:33,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 347 transitions, 4514 flow [2023-08-27 11:26:33,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 347 transitions, 4448 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-27 11:26:33,708 INFO L231 Difference]: Finished difference. Result has 142 places, 226 transitions, 3305 flow [2023-08-27 11:26:33,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3305, PETRI_PLACES=142, PETRI_TRANSITIONS=226} [2023-08-27 11:26:33,709 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 64 predicate places. [2023-08-27 11:26:33,709 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 226 transitions, 3305 flow [2023-08-27 11:26:33,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:33,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:33,709 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] [2023-08-27 11:26:33,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-27 11:26:33,709 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:33,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1375070648, now seen corresponding path program 1 times [2023-08-27 11:26:33,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:33,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282521068] [2023-08-27 11:26:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:33,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:33,763 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 11:26:33,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:33,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282521068] [2023-08-27 11:26:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282521068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:33,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:33,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:26:33,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462209532] [2023-08-27 11:26:33,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:33,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:26:33,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:26:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:26:33,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:26:33,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 226 transitions, 3305 flow. Second operand has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:33,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:33,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:26:33,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:36,071 INFO L124 PetriNetUnfolderBase]: 10572/18532 cut-off events. [2023-08-27 11:26:36,071 INFO L125 PetriNetUnfolderBase]: For 269962/271162 co-relation queries the response was YES. [2023-08-27 11:26:36,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97444 conditions, 18532 events. 10572/18532 cut-off events. For 269962/271162 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 149796 event pairs, 2124 based on Foata normal form. 135/18603 useless extension candidates. Maximal degree in co-relation 97276. Up to 14968 conditions per place. [2023-08-27 11:26:36,190 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 291 selfloop transitions, 49 changer transitions 0/348 dead transitions. [2023-08-27 11:26:36,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 348 transitions, 4816 flow [2023-08-27 11:26:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:26:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:26:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1834 transitions. [2023-08-27 11:26:36,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462287104622871 [2023-08-27 11:26:36,192 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1834 transitions. [2023-08-27 11:26:36,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1834 transitions. [2023-08-27 11:26:36,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:36,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1834 transitions. [2023-08-27 11:26:36,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 183.4) internal successors, (1834), 10 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:36,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:36,195 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:36,195 INFO L175 Difference]: Start difference. First operand has 142 places, 226 transitions, 3305 flow. Second operand 10 states and 1834 transitions. [2023-08-27 11:26:36,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 348 transitions, 4816 flow [2023-08-27 11:26:36,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 348 transitions, 4650 flow, removed 26 selfloop flow, removed 7 redundant places. [2023-08-27 11:26:36,560 INFO L231 Difference]: Finished difference. Result has 146 places, 234 transitions, 3421 flow [2023-08-27 11:26:36,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=3103, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3421, PETRI_PLACES=146, PETRI_TRANSITIONS=234} [2023-08-27 11:26:36,560 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 68 predicate places. [2023-08-27 11:26:36,560 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 234 transitions, 3421 flow [2023-08-27 11:26:36,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:36,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:36,561 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] [2023-08-27 11:26:36,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-27 11:26:36,561 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:36,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:36,561 INFO L85 PathProgramCache]: Analyzing trace with hash 337981125, now seen corresponding path program 1 times [2023-08-27 11:26:36,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:36,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281442270] [2023-08-27 11:26:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:36,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:36,600 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 11:26:36,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:36,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281442270] [2023-08-27 11:26:36,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281442270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:36,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:36,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:26:36,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483366684] [2023-08-27 11:26:36,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:36,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:26:36,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:36,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:26:36,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:26:36,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:26:36,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 234 transitions, 3421 flow. Second operand has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:36,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:36,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:26:36,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:38,860 INFO L124 PetriNetUnfolderBase]: 10402/18344 cut-off events. [2023-08-27 11:26:38,860 INFO L125 PetriNetUnfolderBase]: For 281230/282097 co-relation queries the response was YES. [2023-08-27 11:26:38,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96070 conditions, 18344 events. 10402/18344 cut-off events. For 281230/282097 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 149111 event pairs, 1911 based on Foata normal form. 162/18418 useless extension candidates. Maximal degree in co-relation 95901. Up to 14279 conditions per place. [2023-08-27 11:26:38,977 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 299 selfloop transitions, 54 changer transitions 0/361 dead transitions. [2023-08-27 11:26:38,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 361 transitions, 5091 flow [2023-08-27 11:26:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:26:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:26:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1843 transitions. [2023-08-27 11:26:38,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484184914841849 [2023-08-27 11:26:38,979 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1843 transitions. [2023-08-27 11:26:38,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1843 transitions. [2023-08-27 11:26:38,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:38,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1843 transitions. [2023-08-27 11:26:38,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 184.3) internal successors, (1843), 10 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:38,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:38,982 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:38,983 INFO L175 Difference]: Start difference. First operand has 146 places, 234 transitions, 3421 flow. Second operand 10 states and 1843 transitions. [2023-08-27 11:26:38,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 361 transitions, 5091 flow [2023-08-27 11:26:39,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 361 transitions, 5071 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 11:26:39,355 INFO L231 Difference]: Finished difference. Result has 155 places, 246 transitions, 3816 flow [2023-08-27 11:26:39,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3816, PETRI_PLACES=155, PETRI_TRANSITIONS=246} [2023-08-27 11:26:39,356 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 77 predicate places. [2023-08-27 11:26:39,356 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 246 transitions, 3816 flow [2023-08-27 11:26:39,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:39,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:39,356 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] [2023-08-27 11:26:39,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-27 11:26:39,357 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:39,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:39,357 INFO L85 PathProgramCache]: Analyzing trace with hash 81038941, now seen corresponding path program 1 times [2023-08-27 11:26:39,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:39,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508776074] [2023-08-27 11:26:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:39,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:39,396 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 11:26:39,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:39,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508776074] [2023-08-27 11:26:39,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508776074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:39,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:39,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:26:39,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047221277] [2023-08-27 11:26:39,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:39,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:26:39,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:39,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:26:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:26:39,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:26:39,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 246 transitions, 3816 flow. Second operand has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:39,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:39,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:26:39,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:41,766 INFO L124 PetriNetUnfolderBase]: 10243/18044 cut-off events. [2023-08-27 11:26:41,766 INFO L125 PetriNetUnfolderBase]: For 305381/306365 co-relation queries the response was YES. [2023-08-27 11:26:41,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96267 conditions, 18044 events. 10243/18044 cut-off events. For 305381/306365 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 146329 event pairs, 1770 based on Foata normal form. 258/18220 useless extension candidates. Maximal degree in co-relation 96095. Up to 13141 conditions per place. [2023-08-27 11:26:41,888 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 293 selfloop transitions, 67 changer transitions 0/368 dead transitions. [2023-08-27 11:26:41,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 368 transitions, 5222 flow [2023-08-27 11:26:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:26:41,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:26:41,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1845 transitions. [2023-08-27 11:26:41,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489051094890511 [2023-08-27 11:26:41,890 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1845 transitions. [2023-08-27 11:26:41,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1845 transitions. [2023-08-27 11:26:41,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:41,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1845 transitions. [2023-08-27 11:26:41,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 184.5) internal successors, (1845), 10 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:41,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:41,893 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:41,893 INFO L175 Difference]: Start difference. First operand has 155 places, 246 transitions, 3816 flow. Second operand 10 states and 1845 transitions. [2023-08-27 11:26:41,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 368 transitions, 5222 flow [2023-08-27 11:26:42,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 368 transitions, 5100 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-08-27 11:26:42,322 INFO L231 Difference]: Finished difference. Result has 162 places, 254 transitions, 3927 flow [2023-08-27 11:26:42,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=3534, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3927, PETRI_PLACES=162, PETRI_TRANSITIONS=254} [2023-08-27 11:26:42,322 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 84 predicate places. [2023-08-27 11:26:42,322 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 254 transitions, 3927 flow [2023-08-27 11:26:42,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:42,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:42,322 INFO L208 CegarLoopForPetriNet]: trace 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 11:26:42,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-27 11:26:42,323 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:42,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:42,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1819979256, now seen corresponding path program 1 times [2023-08-27 11:26:42,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:42,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607719375] [2023-08-27 11:26:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:42,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:26:42,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:42,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607719375] [2023-08-27 11:26:42,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607719375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:42,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:42,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:26:42,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297803117] [2023-08-27 11:26:42,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:42,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:26:42,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:42,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:26:42,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:26:42,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:26:42,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 254 transitions, 3927 flow. Second operand has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:42,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:42,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:26:42,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:44,765 INFO L124 PetriNetUnfolderBase]: 10219/17998 cut-off events. [2023-08-27 11:26:44,765 INFO L125 PetriNetUnfolderBase]: For 306929/307796 co-relation queries the response was YES. [2023-08-27 11:26:44,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97296 conditions, 17998 events. 10219/17998 cut-off events. For 306929/307796 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 145451 event pairs, 1980 based on Foata normal form. 84/17982 useless extension candidates. Maximal degree in co-relation 97121. Up to 14771 conditions per place. [2023-08-27 11:26:44,891 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 303 selfloop transitions, 50 changer transitions 0/361 dead transitions. [2023-08-27 11:26:44,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 361 transitions, 5455 flow [2023-08-27 11:26:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:26:44,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:26:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1657 transitions. [2023-08-27 11:26:44,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479589078129224 [2023-08-27 11:26:44,893 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1657 transitions. [2023-08-27 11:26:44,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1657 transitions. [2023-08-27 11:26:44,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:44,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1657 transitions. [2023-08-27 11:26:44,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 184.11111111111111) internal successors, (1657), 9 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:44,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 411.0) internal successors, (4110), 10 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:44,896 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 411.0) internal successors, (4110), 10 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:44,896 INFO L175 Difference]: Start difference. First operand has 162 places, 254 transitions, 3927 flow. Second operand 9 states and 1657 transitions. [2023-08-27 11:26:44,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 361 transitions, 5455 flow [2023-08-27 11:26:45,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 361 transitions, 5385 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 11:26:45,435 INFO L231 Difference]: Finished difference. Result has 170 places, 262 transitions, 4249 flow [2023-08-27 11:26:45,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=3858, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4249, PETRI_PLACES=170, PETRI_TRANSITIONS=262} [2023-08-27 11:26:45,436 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 92 predicate places. [2023-08-27 11:26:45,436 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 262 transitions, 4249 flow [2023-08-27 11:26:45,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:45,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:45,436 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 11:26:45,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-27 11:26:45,436 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:45,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:45,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1225578561, now seen corresponding path program 1 times [2023-08-27 11:26:45,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:45,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857731882] [2023-08-27 11:26:45,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:45,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:45,485 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 11:26:45,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:45,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857731882] [2023-08-27 11:26:45,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857731882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:45,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:45,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:26:45,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187327999] [2023-08-27 11:26:45,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:45,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:26:45,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:45,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:26:45,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:26:45,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:26:45,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 262 transitions, 4249 flow. Second operand has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:45,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:45,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:26:45,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:48,091 INFO L124 PetriNetUnfolderBase]: 10190/17964 cut-off events. [2023-08-27 11:26:48,091 INFO L125 PetriNetUnfolderBase]: For 320893/321730 co-relation queries the response was YES. [2023-08-27 11:26:48,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98957 conditions, 17964 events. 10190/17964 cut-off events. For 320893/321730 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 145449 event pairs, 2025 based on Foata normal form. 141/18032 useless extension candidates. Maximal degree in co-relation 98778. Up to 14350 conditions per place. [2023-08-27 11:26:48,228 INFO L140 encePairwiseOnDemand]: 390/411 looper letters, 336 selfloop transitions, 69 changer transitions 0/413 dead transitions. [2023-08-27 11:26:48,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 413 transitions, 6090 flow [2023-08-27 11:26:48,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:26:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:26:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2628 transitions. [2023-08-27 11:26:48,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42627737226277373 [2023-08-27 11:26:48,230 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2628 transitions. [2023-08-27 11:26:48,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2628 transitions. [2023-08-27 11:26:48,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:48,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2628 transitions. [2023-08-27 11:26:48,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 175.2) internal successors, (2628), 15 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:48,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 411.0) internal successors, (6576), 16 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:48,235 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 411.0) internal successors, (6576), 16 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:48,235 INFO L175 Difference]: Start difference. First operand has 170 places, 262 transitions, 4249 flow. Second operand 15 states and 2628 transitions. [2023-08-27 11:26:48,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 413 transitions, 6090 flow [2023-08-27 11:26:48,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 413 transitions, 6044 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-08-27 11:26:48,955 INFO L231 Difference]: Finished difference. Result has 185 places, 274 transitions, 4597 flow [2023-08-27 11:26:48,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=4203, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4597, PETRI_PLACES=185, PETRI_TRANSITIONS=274} [2023-08-27 11:26:48,956 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 107 predicate places. [2023-08-27 11:26:48,956 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 274 transitions, 4597 flow [2023-08-27 11:26:48,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:48,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:48,956 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 11:26:48,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-27 11:26:48,956 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:48,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:48,957 INFO L85 PathProgramCache]: Analyzing trace with hash 21169441, now seen corresponding path program 2 times [2023-08-27 11:26:48,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:48,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716265728] [2023-08-27 11:26:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:48,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:49,004 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 11:26:49,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:49,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716265728] [2023-08-27 11:26:49,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716265728] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:49,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:49,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:26:49,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142669396] [2023-08-27 11:26:49,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:49,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:26:49,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:49,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:26:49,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:26:49,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:26:49,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 274 transitions, 4597 flow. Second operand has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:49,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:49,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:26:49,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:51,673 INFO L124 PetriNetUnfolderBase]: 10105/17900 cut-off events. [2023-08-27 11:26:51,673 INFO L125 PetriNetUnfolderBase]: For 344186/345035 co-relation queries the response was YES. [2023-08-27 11:26:51,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99770 conditions, 17900 events. 10105/17900 cut-off events. For 344186/345035 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 145834 event pairs, 2010 based on Foata normal form. 132/17944 useless extension candidates. Maximal degree in co-relation 99580. Up to 14262 conditions per place. [2023-08-27 11:26:51,829 INFO L140 encePairwiseOnDemand]: 390/411 looper letters, 326 selfloop transitions, 66 changer transitions 0/400 dead transitions. [2023-08-27 11:26:51,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 400 transitions, 6175 flow [2023-08-27 11:26:51,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:26:51,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:26:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2285 transitions. [2023-08-27 11:26:51,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276623619689313 [2023-08-27 11:26:51,830 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2285 transitions. [2023-08-27 11:26:51,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2285 transitions. [2023-08-27 11:26:51,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:51,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2285 transitions. [2023-08-27 11:26:51,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 175.76923076923077) internal successors, (2285), 13 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:51,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:51,835 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:51,835 INFO L175 Difference]: Start difference. First operand has 185 places, 274 transitions, 4597 flow. Second operand 13 states and 2285 transitions. [2023-08-27 11:26:51,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 400 transitions, 6175 flow [2023-08-27 11:26:52,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 400 transitions, 6072 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-08-27 11:26:52,706 INFO L231 Difference]: Finished difference. Result has 194 places, 279 transitions, 4767 flow [2023-08-27 11:26:52,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=4494, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4767, PETRI_PLACES=194, PETRI_TRANSITIONS=279} [2023-08-27 11:26:52,707 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 116 predicate places. [2023-08-27 11:26:52,707 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 279 transitions, 4767 flow [2023-08-27 11:26:52,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:52,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:52,707 INFO L208 CegarLoopForPetriNet]: trace 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 11:26:52,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-27 11:26:52,707 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:52,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1103085957, now seen corresponding path program 1 times [2023-08-27 11:26:52,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:52,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357876080] [2023-08-27 11:26:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:52,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:26:52,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357876080] [2023-08-27 11:26:52,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357876080] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:26:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295516055] [2023-08-27 11:26:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:52,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:26:52,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:26:52,750 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 11:26:52,752 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 11:26:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:52,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:26:52,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:26:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:26:52,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:26:52,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295516055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:52,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:26:52,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-08-27 11:26:52,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733065018] [2023-08-27 11:26:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:52,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:26:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:52,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:26:52,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-27 11:26:52,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:26:52,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 279 transitions, 4767 flow. Second operand has 6 states, 6 states have (on average 170.83333333333334) internal successors, (1025), 6 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:52,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:52,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:26:52,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:55,887 INFO L124 PetriNetUnfolderBase]: 11262/20029 cut-off events. [2023-08-27 11:26:55,887 INFO L125 PetriNetUnfolderBase]: For 422296/423040 co-relation queries the response was YES. [2023-08-27 11:26:55,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109748 conditions, 20029 events. 11262/20029 cut-off events. For 422296/423040 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 167291 event pairs, 1830 based on Foata normal form. 564/20553 useless extension candidates. Maximal degree in co-relation 109555. Up to 8160 conditions per place. [2023-08-27 11:26:56,038 INFO L140 encePairwiseOnDemand]: 387/411 looper letters, 349 selfloop transitions, 176 changer transitions 24/557 dead transitions. [2023-08-27 11:26:56,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 557 transitions, 8862 flow [2023-08-27 11:26:56,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:26:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:26:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2245 transitions. [2023-08-27 11:26:56,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45519059205190593 [2023-08-27 11:26:56,040 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2245 transitions. [2023-08-27 11:26:56,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2245 transitions. [2023-08-27 11:26:56,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:56,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2245 transitions. [2023-08-27 11:26:56,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 187.08333333333334) internal successors, (2245), 12 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:56,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:56,044 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:56,044 INFO L175 Difference]: Start difference. First operand has 194 places, 279 transitions, 4767 flow. Second operand 12 states and 2245 transitions. [2023-08-27 11:26:56,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 557 transitions, 8862 flow [2023-08-27 11:26:56,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 557 transitions, 8776 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-27 11:26:56,953 INFO L231 Difference]: Finished difference. Result has 204 places, 344 transitions, 6655 flow [2023-08-27 11:26:56,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=4558, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6655, PETRI_PLACES=204, PETRI_TRANSITIONS=344} [2023-08-27 11:26:56,953 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 126 predicate places. [2023-08-27 11:26:56,953 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 344 transitions, 6655 flow [2023-08-27 11:26:56,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.83333333333334) internal successors, (1025), 6 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:56,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:56,954 INFO L208 CegarLoopForPetriNet]: trace 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 11:26:56,958 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 11:26:57,154 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,SelfDestructingSolverStorable58 [2023-08-27 11:26:57,154 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:26:57,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:57,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1113657951, now seen corresponding path program 2 times [2023-08-27 11:26:57,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:57,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964428999] [2023-08-27 11:26:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:57,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:26:57,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:57,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964428999] [2023-08-27 11:26:57,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964428999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:57,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:57,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:26:57,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278330697] [2023-08-27 11:26:57,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:57,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:26:57,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:26:57,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:26:57,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:26:57,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 344 transitions, 6655 flow. Second operand has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:26:57,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:57,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:26:57,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:27:00,569 INFO L124 PetriNetUnfolderBase]: 11171/19781 cut-off events. [2023-08-27 11:27:00,569 INFO L125 PetriNetUnfolderBase]: For 464608/465808 co-relation queries the response was YES. [2023-08-27 11:27:00,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117445 conditions, 19781 events. 11171/19781 cut-off events. For 464608/465808 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 163677 event pairs, 2088 based on Foata normal form. 114/19828 useless extension candidates. Maximal degree in co-relation 117236. Up to 16421 conditions per place. [2023-08-27 11:27:00,722 INFO L140 encePairwiseOnDemand]: 393/411 looper letters, 366 selfloop transitions, 68 changer transitions 0/442 dead transitions. [2023-08-27 11:27:00,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 442 transitions, 8274 flow [2023-08-27 11:27:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:27:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:27:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1656 transitions. [2023-08-27 11:27:00,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44768856447688565 [2023-08-27 11:27:00,724 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1656 transitions. [2023-08-27 11:27:00,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1656 transitions. [2023-08-27 11:27:00,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:27:00,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1656 transitions. [2023-08-27 11:27:00,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:00,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 411.0) internal successors, (4110), 10 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:00,727 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 411.0) internal successors, (4110), 10 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:00,727 INFO L175 Difference]: Start difference. First operand has 204 places, 344 transitions, 6655 flow. Second operand 9 states and 1656 transitions. [2023-08-27 11:27:00,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 442 transitions, 8274 flow [2023-08-27 11:27:02,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 442 transitions, 8017 flow, removed 99 selfloop flow, removed 1 redundant places. [2023-08-27 11:27:02,472 INFO L231 Difference]: Finished difference. Result has 215 places, 352 transitions, 6853 flow [2023-08-27 11:27:02,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=6407, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6853, PETRI_PLACES=215, PETRI_TRANSITIONS=352} [2023-08-27 11:27:02,473 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 137 predicate places. [2023-08-27 11:27:02,473 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 352 transitions, 6853 flow [2023-08-27 11:27:02,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:02,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:27:02,473 INFO L208 CegarLoopForPetriNet]: trace 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 11:27:02,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-27 11:27:02,473 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:27:02,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:27:02,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1938978331, now seen corresponding path program 1 times [2023-08-27 11:27:02,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:27:02,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979438654] [2023-08-27 11:27:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:27:02,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:27:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:27:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:27:02,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:27:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979438654] [2023-08-27 11:27:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979438654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:27:02,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:27:02,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:27:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687424620] [2023-08-27 11:27:02,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:27:02,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:27:02,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:27:02,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:27:02,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:27:02,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:27:02,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 352 transitions, 6853 flow. Second operand has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:02,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:27:02,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:27:02,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:27:05,667 INFO L124 PetriNetUnfolderBase]: 11029/19591 cut-off events. [2023-08-27 11:27:05,668 INFO L125 PetriNetUnfolderBase]: For 472052/472817 co-relation queries the response was YES. [2023-08-27 11:27:05,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116258 conditions, 19591 events. 11029/19591 cut-off events. For 472052/472817 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 162489 event pairs, 1953 based on Foata normal form. 159/19704 useless extension candidates. Maximal degree in co-relation 116044. Up to 15965 conditions per place. [2023-08-27 11:27:05,831 INFO L140 encePairwiseOnDemand]: 394/411 looper letters, 347 selfloop transitions, 73 changer transitions 0/428 dead transitions. [2023-08-27 11:27:05,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 428 transitions, 8318 flow [2023-08-27 11:27:05,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:27:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:27:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1470 transitions. [2023-08-27 11:27:05,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470802919708029 [2023-08-27 11:27:05,832 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1470 transitions. [2023-08-27 11:27:05,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1470 transitions. [2023-08-27 11:27:05,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:27:05,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1470 transitions. [2023-08-27 11:27:05,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 183.75) internal successors, (1470), 8 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:05,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 411.0) internal successors, (3699), 9 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:05,835 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 411.0) internal successors, (3699), 9 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:05,835 INFO L175 Difference]: Start difference. First operand has 215 places, 352 transitions, 6853 flow. Second operand 8 states and 1470 transitions. [2023-08-27 11:27:05,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 428 transitions, 8318 flow [2023-08-27 11:27:07,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 428 transitions, 8240 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-08-27 11:27:07,604 INFO L231 Difference]: Finished difference. Result has 221 places, 358 transitions, 7193 flow [2023-08-27 11:27:07,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=6713, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7193, PETRI_PLACES=221, PETRI_TRANSITIONS=358} [2023-08-27 11:27:07,604 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 143 predicate places. [2023-08-27 11:27:07,605 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 358 transitions, 7193 flow [2023-08-27 11:27:07,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:07,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:27:07,605 INFO L208 CegarLoopForPetriNet]: trace 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 11:27:07,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-27 11:27:07,605 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:27:07,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:27:07,605 INFO L85 PathProgramCache]: Analyzing trace with hash 832767299, now seen corresponding path program 1 times [2023-08-27 11:27:07,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:27:07,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812947131] [2023-08-27 11:27:07,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:27:07,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:27:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:27:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:27:07,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:27:07,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812947131] [2023-08-27 11:27:07,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812947131] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:27:07,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:27:07,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:27:07,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315272610] [2023-08-27 11:27:07,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:27:07,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:27:07,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:27:07,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:27:07,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:27:07,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:27:07,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 358 transitions, 7193 flow. Second operand has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:07,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:27:07,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:27:07,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:27:10,810 INFO L124 PetriNetUnfolderBase]: 10868/19262 cut-off events. [2023-08-27 11:27:10,810 INFO L125 PetriNetUnfolderBase]: For 499672/500602 co-relation queries the response was YES. [2023-08-27 11:27:10,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114138 conditions, 19262 events. 10868/19262 cut-off events. For 499672/500602 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 158870 event pairs, 1788 based on Foata normal form. 264/19489 useless extension candidates. Maximal degree in co-relation 113920. Up to 14807 conditions per place. [2023-08-27 11:27:10,976 INFO L140 encePairwiseOnDemand]: 394/411 looper letters, 377 selfloop transitions, 73 changer transitions 0/458 dead transitions. [2023-08-27 11:27:10,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 458 transitions, 8678 flow [2023-08-27 11:27:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:27:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:27:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1668 transitions. [2023-08-27 11:27:10,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45093268450932683 [2023-08-27 11:27:10,978 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1668 transitions. [2023-08-27 11:27:10,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1668 transitions. [2023-08-27 11:27:10,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:27:10,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1668 transitions. [2023-08-27 11:27:10,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 185.33333333333334) internal successors, (1668), 9 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:10,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 411.0) internal successors, (4110), 10 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:10,981 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 411.0) internal successors, (4110), 10 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:10,981 INFO L175 Difference]: Start difference. First operand has 221 places, 358 transitions, 7193 flow. Second operand 9 states and 1668 transitions. [2023-08-27 11:27:10,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 458 transitions, 8678 flow [2023-08-27 11:27:12,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 458 transitions, 8530 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-08-27 11:27:12,897 INFO L231 Difference]: Finished difference. Result has 227 places, 353 transitions, 6998 flow [2023-08-27 11:27:12,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=6674, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6998, PETRI_PLACES=227, PETRI_TRANSITIONS=353} [2023-08-27 11:27:12,897 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 149 predicate places. [2023-08-27 11:27:12,898 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 353 transitions, 6998 flow [2023-08-27 11:27:12,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:12,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:27:12,898 INFO L208 CegarLoopForPetriNet]: trace 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 11:27:12,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-27 11:27:12,898 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:27:12,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:27:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash 83091466, now seen corresponding path program 2 times [2023-08-27 11:27:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:27:12,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031653182] [2023-08-27 11:27:12,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:27:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:27:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:27:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:27:12,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:27:12,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031653182] [2023-08-27 11:27:12,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031653182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:27:12,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477716919] [2023-08-27 11:27:12,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:27:12,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:27:12,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:27:12,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:27:12,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 11:27:13,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 11:27:13,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:27:13,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:27:13,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:27:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:27:13,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:27:13,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477716919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:27:13,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:27:13,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-08-27 11:27:13,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443102666] [2023-08-27 11:27:13,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:27:13,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:27:13,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:27:13,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:27:13,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-27 11:27:13,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:27:13,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 353 transitions, 6998 flow. Second operand has 6 states, 6 states have (on average 170.5) internal successors, (1023), 6 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:13,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:27:13,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:27:13,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:27:16,522 INFO L124 PetriNetUnfolderBase]: 11650/20782 cut-off events. [2023-08-27 11:27:16,522 INFO L125 PetriNetUnfolderBase]: For 539789/540368 co-relation queries the response was YES. [2023-08-27 11:27:16,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122163 conditions, 20782 events. 11650/20782 cut-off events. For 539789/540368 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 174934 event pairs, 1954 based on Foata normal form. 246/20997 useless extension candidates. Maximal degree in co-relation 121943. Up to 7405 conditions per place. [2023-08-27 11:27:16,713 INFO L140 encePairwiseOnDemand]: 388/411 looper letters, 378 selfloop transitions, 244 changer transitions 12/642 dead transitions. [2023-08-27 11:27:16,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 642 transitions, 11514 flow [2023-08-27 11:27:16,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:27:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:27:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2250 transitions. [2023-08-27 11:27:16,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562043795620438 [2023-08-27 11:27:16,715 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2250 transitions. [2023-08-27 11:27:16,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2250 transitions. [2023-08-27 11:27:16,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:27:16,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2250 transitions. [2023-08-27 11:27:16,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 187.5) internal successors, (2250), 12 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:16,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:16,719 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:16,719 INFO L175 Difference]: Start difference. First operand has 227 places, 353 transitions, 6998 flow. Second operand 12 states and 2250 transitions. [2023-08-27 11:27:16,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 642 transitions, 11514 flow [2023-08-27 11:27:18,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 642 transitions, 11393 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-27 11:27:18,977 INFO L231 Difference]: Finished difference. Result has 243 places, 433 transitions, 9417 flow [2023-08-27 11:27:18,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=6835, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9417, PETRI_PLACES=243, PETRI_TRANSITIONS=433} [2023-08-27 11:27:18,977 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 165 predicate places. [2023-08-27 11:27:18,977 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 433 transitions, 9417 flow [2023-08-27 11:27:18,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.5) internal successors, (1023), 6 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:18,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:27:18,977 INFO L208 CegarLoopForPetriNet]: trace 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 11:27:18,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 11:27:19,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:27:19,178 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:27:19,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:27:19,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1819979255, now seen corresponding path program 1 times [2023-08-27 11:27:19,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:27:19,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132457215] [2023-08-27 11:27:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:27:19,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:27:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:27:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:27:19,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:27:19,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132457215] [2023-08-27 11:27:19,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132457215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:27:19,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:27:19,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:27:19,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591298166] [2023-08-27 11:27:19,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:27:19,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:27:19,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:27:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:27:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:27:19,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:27:19,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 433 transitions, 9417 flow. Second operand has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:19,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:27:19,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:27:19,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:27:23,274 INFO L124 PetriNetUnfolderBase]: 11531/20442 cut-off events. [2023-08-27 11:27:23,275 INFO L125 PetriNetUnfolderBase]: For 575802/576948 co-relation queries the response was YES. [2023-08-27 11:27:23,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129888 conditions, 20442 events. 11531/20442 cut-off events. For 575802/576948 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 170604 event pairs, 1879 based on Foata normal form. 285/20690 useless extension candidates. Maximal degree in co-relation 129655. Up to 16030 conditions per place. [2023-08-27 11:27:23,473 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 429 selfloop transitions, 88 changer transitions 0/525 dead transitions. [2023-08-27 11:27:23,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 525 transitions, 10929 flow [2023-08-27 11:27:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:27:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:27:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1823 transitions. [2023-08-27 11:27:23,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435523114355231 [2023-08-27 11:27:23,475 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1823 transitions. [2023-08-27 11:27:23,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1823 transitions. [2023-08-27 11:27:23,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:27:23,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1823 transitions. [2023-08-27 11:27:23,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 182.3) internal successors, (1823), 10 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:23,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:23,478 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:23,478 INFO L175 Difference]: Start difference. First operand has 243 places, 433 transitions, 9417 flow. Second operand 10 states and 1823 transitions. [2023-08-27 11:27:23,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 525 transitions, 10929 flow [2023-08-27 11:27:26,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 525 transitions, 10676 flow, removed 95 selfloop flow, removed 1 redundant places. [2023-08-27 11:27:26,800 INFO L231 Difference]: Finished difference. Result has 251 places, 430 transitions, 9194 flow [2023-08-27 11:27:26,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=9018, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9194, PETRI_PLACES=251, PETRI_TRANSITIONS=430} [2023-08-27 11:27:26,801 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 173 predicate places. [2023-08-27 11:27:26,801 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 430 transitions, 9194 flow [2023-08-27 11:27:26,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.14285714285714) internal successors, (1191), 7 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:26,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:27:26,801 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 11:27:26,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-27 11:27:26,802 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:27:26,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:27:26,802 INFO L85 PathProgramCache]: Analyzing trace with hash 604533122, now seen corresponding path program 1 times [2023-08-27 11:27:26,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:27:26,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955012202] [2023-08-27 11:27:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:27:26,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:27:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:27:26,848 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 11:27:26,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:27:26,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955012202] [2023-08-27 11:27:26,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955012202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:27:26,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:27:26,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:27:26,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452701034] [2023-08-27 11:27:26,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:27:26,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:27:26,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:27:26,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:27:26,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:27:26,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:27:26,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 430 transitions, 9194 flow. Second operand has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:26,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:27:26,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:27:26,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:27:30,783 INFO L124 PetriNetUnfolderBase]: 11620/20625 cut-off events. [2023-08-27 11:27:30,783 INFO L125 PetriNetUnfolderBase]: For 611995/612418 co-relation queries the response was YES. [2023-08-27 11:27:30,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129078 conditions, 20625 events. 11620/20625 cut-off events. For 611995/612418 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 172815 event pairs, 1567 based on Foata normal form. 234/20846 useless extension candidates. Maximal degree in co-relation 128843. Up to 14685 conditions per place. [2023-08-27 11:27:30,980 INFO L140 encePairwiseOnDemand]: 389/411 looper letters, 498 selfloop transitions, 137 changer transitions 1/644 dead transitions. [2023-08-27 11:27:30,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 644 transitions, 12014 flow [2023-08-27 11:27:30,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:27:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:27:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2850 transitions. [2023-08-27 11:27:30,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4333941605839416 [2023-08-27 11:27:30,983 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2850 transitions. [2023-08-27 11:27:30,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2850 transitions. [2023-08-27 11:27:30,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:27:30,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2850 transitions. [2023-08-27 11:27:30,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 178.125) internal successors, (2850), 16 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:30,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 411.0) internal successors, (6987), 17 states have internal predecessors, (6987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:30,988 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 411.0) internal successors, (6987), 17 states have internal predecessors, (6987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:30,988 INFO L175 Difference]: Start difference. First operand has 251 places, 430 transitions, 9194 flow. Second operand 16 states and 2850 transitions. [2023-08-27 11:27:30,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 644 transitions, 12014 flow [2023-08-27 11:27:34,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 644 transitions, 11832 flow, removed 50 selfloop flow, removed 4 redundant places. [2023-08-27 11:27:34,061 INFO L231 Difference]: Finished difference. Result has 268 places, 456 transitions, 9793 flow [2023-08-27 11:27:34,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=8601, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9793, PETRI_PLACES=268, PETRI_TRANSITIONS=456} [2023-08-27 11:27:34,061 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 190 predicate places. [2023-08-27 11:27:34,061 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 456 transitions, 9793 flow [2023-08-27 11:27:34,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:34,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:27:34,061 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 11:27:34,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-08-27 11:27:34,062 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:27:34,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:27:34,062 INFO L85 PathProgramCache]: Analyzing trace with hash 604533121, now seen corresponding path program 3 times [2023-08-27 11:27:34,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:27:34,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968237809] [2023-08-27 11:27:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:27:34,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:27:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:27:34,177 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 11:27:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:27:34,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968237809] [2023-08-27 11:27:34,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968237809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:27:34,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:27:34,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:27:34,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630194027] [2023-08-27 11:27:34,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:27:34,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:27:34,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:27:34,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:27:34,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:27:34,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:27:34,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 456 transitions, 9793 flow. Second operand has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:34,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:27:34,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:27:34,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:27:38,153 INFO L124 PetriNetUnfolderBase]: 11467/20355 cut-off events. [2023-08-27 11:27:38,153 INFO L125 PetriNetUnfolderBase]: For 596215/596851 co-relation queries the response was YES. [2023-08-27 11:27:38,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128870 conditions, 20355 events. 11467/20355 cut-off events. For 596215/596851 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 169854 event pairs, 1789 based on Foata normal form. 159/20489 useless extension candidates. Maximal degree in co-relation 128619. Up to 15782 conditions per place. [2023-08-27 11:27:38,357 INFO L140 encePairwiseOnDemand]: 390/411 looper letters, 468 selfloop transitions, 118 changer transitions 2/596 dead transitions. [2023-08-27 11:27:38,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 596 transitions, 11624 flow [2023-08-27 11:27:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:27:38,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:27:38,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2797 transitions. [2023-08-27 11:27:38,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4253345498783455 [2023-08-27 11:27:38,359 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2797 transitions. [2023-08-27 11:27:38,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2797 transitions. [2023-08-27 11:27:38,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:27:38,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2797 transitions. [2023-08-27 11:27:38,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 174.8125) internal successors, (2797), 16 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:38,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 411.0) internal successors, (6987), 17 states have internal predecessors, (6987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:38,364 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 411.0) internal successors, (6987), 17 states have internal predecessors, (6987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:38,364 INFO L175 Difference]: Start difference. First operand has 268 places, 456 transitions, 9793 flow. Second operand 16 states and 2797 transitions. [2023-08-27 11:27:38,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 596 transitions, 11624 flow [2023-08-27 11:27:41,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 596 transitions, 11468 flow, removed 73 selfloop flow, removed 4 redundant places. [2023-08-27 11:27:41,811 INFO L231 Difference]: Finished difference. Result has 279 places, 448 transitions, 9625 flow [2023-08-27 11:27:41,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=9411, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9625, PETRI_PLACES=279, PETRI_TRANSITIONS=448} [2023-08-27 11:27:41,812 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 201 predicate places. [2023-08-27 11:27:41,812 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 448 transitions, 9625 flow [2023-08-27 11:27:41,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:41,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:27:41,812 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 11:27:41,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-08-27 11:27:41,812 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:27:41,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:27:41,813 INFO L85 PathProgramCache]: Analyzing trace with hash 700139408, now seen corresponding path program 1 times [2023-08-27 11:27:41,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:27:41,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114673339] [2023-08-27 11:27:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:27:41,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:27:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:27:41,859 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 11:27:41,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:27:41,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114673339] [2023-08-27 11:27:41,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114673339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:27:41,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:27:41,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:27:41,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190896511] [2023-08-27 11:27:41,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:27:41,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:27:41,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:27:41,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:27:41,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:27:41,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:27:41,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 448 transitions, 9625 flow. Second operand has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:41,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:27:41,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:27:41,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:27:45,983 INFO L124 PetriNetUnfolderBase]: 11614/20591 cut-off events. [2023-08-27 11:27:45,983 INFO L125 PetriNetUnfolderBase]: For 616546/617224 co-relation queries the response was YES. [2023-08-27 11:27:46,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131130 conditions, 20591 events. 11614/20591 cut-off events. For 616546/617224 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 171959 event pairs, 2082 based on Foata normal form. 120/20674 useless extension candidates. Maximal degree in co-relation 130875. Up to 17055 conditions per place. [2023-08-27 11:27:46,169 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 505 selfloop transitions, 77 changer transitions 0/590 dead transitions. [2023-08-27 11:27:46,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 590 transitions, 11897 flow [2023-08-27 11:27:46,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:27:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:27:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2290 transitions. [2023-08-27 11:27:46,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4285981658244432 [2023-08-27 11:27:46,171 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2290 transitions. [2023-08-27 11:27:46,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2290 transitions. [2023-08-27 11:27:46,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:27:46,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2290 transitions. [2023-08-27 11:27:46,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 176.15384615384616) internal successors, (2290), 13 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:46,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:46,175 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:46,175 INFO L175 Difference]: Start difference. First operand has 279 places, 448 transitions, 9625 flow. Second operand 13 states and 2290 transitions. [2023-08-27 11:27:46,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 590 transitions, 11897 flow [2023-08-27 11:27:49,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 590 transitions, 11730 flow, removed 21 selfloop flow, removed 8 redundant places. [2023-08-27 11:27:49,755 INFO L231 Difference]: Finished difference. Result has 286 places, 456 transitions, 9877 flow [2023-08-27 11:27:49,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=9464, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9877, PETRI_PLACES=286, PETRI_TRANSITIONS=456} [2023-08-27 11:27:49,756 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 208 predicate places. [2023-08-27 11:27:49,756 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 456 transitions, 9877 flow [2023-08-27 11:27:49,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:49,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:27:49,756 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 11:27:49,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-08-27 11:27:49,756 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:27:49,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:27:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash 261539568, now seen corresponding path program 2 times [2023-08-27 11:27:49,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:27:49,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558424453] [2023-08-27 11:27:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:27:49,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:27:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:27:49,802 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 11:27:49,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:27:49,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558424453] [2023-08-27 11:27:49,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558424453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:27:49,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:27:49,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:27:49,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574342029] [2023-08-27 11:27:49,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:27:49,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:27:49,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:27:49,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:27:49,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:27:49,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:27:49,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 456 transitions, 9877 flow. Second operand has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:49,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:27:49,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:27:49,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:27:54,086 INFO L124 PetriNetUnfolderBase]: 11760/20822 cut-off events. [2023-08-27 11:27:54,086 INFO L125 PetriNetUnfolderBase]: For 621806/622406 co-relation queries the response was YES. [2023-08-27 11:27:54,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133624 conditions, 20822 events. 11760/20822 cut-off events. For 621806/622406 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 173755 event pairs, 1942 based on Foata normal form. 204/20995 useless extension candidates. Maximal degree in co-relation 133366. Up to 15874 conditions per place. [2023-08-27 11:27:54,305 INFO L140 encePairwiseOnDemand]: 390/411 looper letters, 515 selfloop transitions, 122 changer transitions 5/650 dead transitions. [2023-08-27 11:27:54,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 650 transitions, 12759 flow [2023-08-27 11:27:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:27:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:27:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2818 transitions. [2023-08-27 11:27:54,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4285279805352798 [2023-08-27 11:27:54,307 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2818 transitions. [2023-08-27 11:27:54,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2818 transitions. [2023-08-27 11:27:54,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:27:54,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2818 transitions. [2023-08-27 11:27:54,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 176.125) internal successors, (2818), 16 states have internal predecessors, (2818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:54,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 411.0) internal successors, (6987), 17 states have internal predecessors, (6987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:54,312 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 411.0) internal successors, (6987), 17 states have internal predecessors, (6987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:54,312 INFO L175 Difference]: Start difference. First operand has 286 places, 456 transitions, 9877 flow. Second operand 16 states and 2818 transitions. [2023-08-27 11:27:54,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 650 transitions, 12759 flow [2023-08-27 11:27:58,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 650 transitions, 12614 flow, removed 59 selfloop flow, removed 6 redundant places. [2023-08-27 11:27:58,125 INFO L231 Difference]: Finished difference. Result has 300 places, 480 transitions, 10558 flow [2023-08-27 11:27:58,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=9648, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10558, PETRI_PLACES=300, PETRI_TRANSITIONS=480} [2023-08-27 11:27:58,125 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 222 predicate places. [2023-08-27 11:27:58,125 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 480 transitions, 10558 flow [2023-08-27 11:27:58,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:58,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:27:58,126 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:27:58,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-27 11:27:58,126 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:27:58,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:27:58,126 INFO L85 PathProgramCache]: Analyzing trace with hash 780922593, now seen corresponding path program 1 times [2023-08-27 11:27:58,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:27:58,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017026620] [2023-08-27 11:27:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:27:58,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:27:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:27:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:27:58,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:27:58,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017026620] [2023-08-27 11:27:58,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017026620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:27:58,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:27:58,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:27:58,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548728992] [2023-08-27 11:27:58,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:27:58,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:27:58,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:27:58,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:27:58,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:27:58,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:27:58,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 480 transitions, 10558 flow. Second operand has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:27:58,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:27:58,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:27:58,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:28:02,461 INFO L124 PetriNetUnfolderBase]: 11556/20521 cut-off events. [2023-08-27 11:28:02,461 INFO L125 PetriNetUnfolderBase]: For 646151/646781 co-relation queries the response was YES. [2023-08-27 11:28:02,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135816 conditions, 20521 events. 11556/20521 cut-off events. For 646151/646781 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 171499 event pairs, 1891 based on Foata normal form. 159/20652 useless extension candidates. Maximal degree in co-relation 135549. Up to 16353 conditions per place. [2023-08-27 11:28:02,660 INFO L140 encePairwiseOnDemand]: 394/411 looper letters, 477 selfloop transitions, 89 changer transitions 0/574 dead transitions. [2023-08-27 11:28:02,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 574 transitions, 12453 flow [2023-08-27 11:28:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:28:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:28:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1812 transitions. [2023-08-27 11:28:02,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4408759124087591 [2023-08-27 11:28:02,661 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1812 transitions. [2023-08-27 11:28:02,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1812 transitions. [2023-08-27 11:28:02,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:28:02,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1812 transitions. [2023-08-27 11:28:02,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 181.2) internal successors, (1812), 10 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:02,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:02,665 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 411.0) internal successors, (4521), 11 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:02,665 INFO L175 Difference]: Start difference. First operand has 300 places, 480 transitions, 10558 flow. Second operand 10 states and 1812 transitions. [2023-08-27 11:28:02,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 574 transitions, 12453 flow [2023-08-27 11:28:06,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 574 transitions, 12269 flow, removed 50 selfloop flow, removed 6 redundant places. [2023-08-27 11:28:06,600 INFO L231 Difference]: Finished difference. Result has 306 places, 489 transitions, 10835 flow [2023-08-27 11:28:06,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=10326, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10835, PETRI_PLACES=306, PETRI_TRANSITIONS=489} [2023-08-27 11:28:06,600 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 228 predicate places. [2023-08-27 11:28:06,600 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 489 transitions, 10835 flow [2023-08-27 11:28:06,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:06,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:28:06,600 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:28:06,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-08-27 11:28:06,601 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:28:06,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:28:06,601 INFO L85 PathProgramCache]: Analyzing trace with hash 856560959, now seen corresponding path program 2 times [2023-08-27 11:28:06,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:28:06,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111383217] [2023-08-27 11:28:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:28:06,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:28:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:28:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:28:06,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:28:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111383217] [2023-08-27 11:28:06,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111383217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:28:06,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:28:06,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:28:06,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356592335] [2023-08-27 11:28:06,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:28:06,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:28:06,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:28:06,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:28:06,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:28:06,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:28:06,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 489 transitions, 10835 flow. Second operand has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:06,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:28:06,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:28:06,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:28:11,040 INFO L124 PetriNetUnfolderBase]: 11558/20571 cut-off events. [2023-08-27 11:28:11,040 INFO L125 PetriNetUnfolderBase]: For 679212/679500 co-relation queries the response was YES. [2023-08-27 11:28:11,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136334 conditions, 20571 events. 11558/20571 cut-off events. For 679212/679500 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 172667 event pairs, 1885 based on Foata normal form. 51/20594 useless extension candidates. Maximal degree in co-relation 136059. Up to 16456 conditions per place. [2023-08-27 11:28:11,267 INFO L140 encePairwiseOnDemand]: 394/411 looper letters, 480 selfloop transitions, 82 changer transitions 0/570 dead transitions. [2023-08-27 11:28:11,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 570 transitions, 12514 flow [2023-08-27 11:28:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:28:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:28:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1640 transitions. [2023-08-27 11:28:11,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433630711002974 [2023-08-27 11:28:11,269 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1640 transitions. [2023-08-27 11:28:11,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1640 transitions. [2023-08-27 11:28:11,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:28:11,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1640 transitions. [2023-08-27 11:28:11,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.22222222222223) internal successors, (1640), 9 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:11,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 411.0) internal successors, (4110), 10 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:11,272 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 411.0) internal successors, (4110), 10 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:11,272 INFO L175 Difference]: Start difference. First operand has 306 places, 489 transitions, 10835 flow. Second operand 9 states and 1640 transitions. [2023-08-27 11:28:11,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 570 transitions, 12514 flow [2023-08-27 11:28:15,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 570 transitions, 12450 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-08-27 11:28:15,379 INFO L231 Difference]: Finished difference. Result has 314 places, 491 transitions, 11038 flow [2023-08-27 11:28:15,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=10722, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11038, PETRI_PLACES=314, PETRI_TRANSITIONS=491} [2023-08-27 11:28:15,379 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 236 predicate places. [2023-08-27 11:28:15,379 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 491 transitions, 11038 flow [2023-08-27 11:28:15,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:15,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:28:15,380 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:28:15,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-08-27 11:28:15,380 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:28:15,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:28:15,380 INFO L85 PathProgramCache]: Analyzing trace with hash -306052609, now seen corresponding path program 1 times [2023-08-27 11:28:15,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:28:15,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336769787] [2023-08-27 11:28:15,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:28:15,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:28:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:28:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:28:15,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:28:15,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336769787] [2023-08-27 11:28:15,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336769787] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:28:15,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547101907] [2023-08-27 11:28:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:28:15,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:28:15,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:28:15,422 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:28:15,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 11:28:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:28:15,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 11:28:15,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:28:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:28:15,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:28:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:28:15,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547101907] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:28:15,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:28:15,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 11:28:15,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85187502] [2023-08-27 11:28:15,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:28:15,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:28:15,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:28:15,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:28:15,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:28:15,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:28:15,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 491 transitions, 11038 flow. Second operand has 14 states, 14 states have (on average 171.07142857142858) internal successors, (2395), 14 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:15,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:28:15,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:28:15,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:28:20,139 INFO L124 PetriNetUnfolderBase]: 11589/20564 cut-off events. [2023-08-27 11:28:20,139 INFO L125 PetriNetUnfolderBase]: For 723020/723572 co-relation queries the response was YES. [2023-08-27 11:28:20,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138241 conditions, 20564 events. 11589/20564 cut-off events. For 723020/723572 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 171921 event pairs, 1783 based on Foata normal form. 138/20671 useless extension candidates. Maximal degree in co-relation 137958. Up to 15516 conditions per place. [2023-08-27 11:28:20,363 INFO L140 encePairwiseOnDemand]: 393/411 looper letters, 519 selfloop transitions, 132 changer transitions 0/659 dead transitions. [2023-08-27 11:28:20,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 659 transitions, 13447 flow [2023-08-27 11:28:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 11:28:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 11:28:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3579 transitions. [2023-08-27 11:28:20,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43540145985401457 [2023-08-27 11:28:20,365 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3579 transitions. [2023-08-27 11:28:20,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3579 transitions. [2023-08-27 11:28:20,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:28:20,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3579 transitions. [2023-08-27 11:28:20,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 178.95) internal successors, (3579), 20 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:20,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 411.0) internal successors, (8631), 21 states have internal predecessors, (8631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:20,371 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 411.0) internal successors, (8631), 21 states have internal predecessors, (8631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:20,372 INFO L175 Difference]: Start difference. First operand has 314 places, 491 transitions, 11038 flow. Second operand 20 states and 3579 transitions. [2023-08-27 11:28:20,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 659 transitions, 13447 flow [2023-08-27 11:28:24,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 659 transitions, 13319 flow, removed 32 selfloop flow, removed 5 redundant places. [2023-08-27 11:28:24,859 INFO L231 Difference]: Finished difference. Result has 329 places, 493 transitions, 11232 flow [2023-08-27 11:28:24,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=10865, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11232, PETRI_PLACES=329, PETRI_TRANSITIONS=493} [2023-08-27 11:28:24,859 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 251 predicate places. [2023-08-27 11:28:24,859 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 493 transitions, 11232 flow [2023-08-27 11:28:24,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 171.07142857142858) internal successors, (2395), 14 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:24,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:28:24,860 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:28:24,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 11:28:25,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:28:25,060 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:28:25,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:28:25,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2109947530, now seen corresponding path program 1 times [2023-08-27 11:28:25,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:28:25,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406306583] [2023-08-27 11:28:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:28:25,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:28:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:28:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:28:25,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:28:25,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406306583] [2023-08-27 11:28:25,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406306583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:28:25,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:28:25,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:28:25,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088772024] [2023-08-27 11:28:25,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:28:25,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:28:25,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:28:25,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:28:25,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:28:25,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 411 [2023-08-27 11:28:25,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 493 transitions, 11232 flow. Second operand has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:25,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:28:25,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 411 [2023-08-27 11:28:25,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:28:29,564 INFO L124 PetriNetUnfolderBase]: 11585/20607 cut-off events. [2023-08-27 11:28:29,564 INFO L125 PetriNetUnfolderBase]: For 747984/748737 co-relation queries the response was YES. [2023-08-27 11:28:29,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139405 conditions, 20607 events. 11585/20607 cut-off events. For 747984/748737 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 172808 event pairs, 1897 based on Foata normal form. 192/20765 useless extension candidates. Maximal degree in co-relation 139119. Up to 16539 conditions per place. [2023-08-27 11:28:29,779 INFO L140 encePairwiseOnDemand]: 394/411 looper letters, 476 selfloop transitions, 83 changer transitions 0/567 dead transitions. [2023-08-27 11:28:29,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 567 transitions, 12857 flow [2023-08-27 11:28:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:28:29,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:28:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1636 transitions. [2023-08-27 11:28:29,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44228169775615034 [2023-08-27 11:28:29,780 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1636 transitions. [2023-08-27 11:28:29,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1636 transitions. [2023-08-27 11:28:29,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:28:29,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1636 transitions. [2023-08-27 11:28:29,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 181.77777777777777) internal successors, (1636), 9 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:29,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 411.0) internal successors, (4110), 10 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:29,783 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 411.0) internal successors, (4110), 10 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:29,783 INFO L175 Difference]: Start difference. First operand has 329 places, 493 transitions, 11232 flow. Second operand 9 states and 1636 transitions. [2023-08-27 11:28:29,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 567 transitions, 12857 flow [2023-08-27 11:28:33,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 567 transitions, 12330 flow, removed 51 selfloop flow, removed 17 redundant places. [2023-08-27 11:28:33,899 INFO L231 Difference]: Finished difference. Result has 322 places, 495 transitions, 10967 flow [2023-08-27 11:28:33,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=10659, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10967, PETRI_PLACES=322, PETRI_TRANSITIONS=495} [2023-08-27 11:28:33,900 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 244 predicate places. [2023-08-27 11:28:33,900 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 495 transitions, 10967 flow [2023-08-27 11:28:33,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:33,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:28:33,900 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 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 11:28:33,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-08-27 11:28:33,900 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:28:33,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:28:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1752541200, now seen corresponding path program 1 times [2023-08-27 11:28:33,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:28:33,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341362655] [2023-08-27 11:28:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:28:33,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:28:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:28:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:28:33,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:28:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341362655] [2023-08-27 11:28:33,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341362655] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:28:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545035060] [2023-08-27 11:28:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:28:33,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:28:33,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:28:33,956 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:28:33,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 11:28:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:28:34,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 11:28:34,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:28:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:28:34,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:28:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:28:34,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545035060] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:28:34,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:28:34,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-08-27 11:28:34,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768189400] [2023-08-27 11:28:34,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:28:34,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:28:34,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:28:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:28:34,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:28:34,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:28:34,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 495 transitions, 10967 flow. Second operand has 14 states, 14 states have (on average 166.71428571428572) internal successors, (2334), 14 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:34,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:28:34,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:28:34,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:28:39,404 INFO L124 PetriNetUnfolderBase]: 11752/20885 cut-off events. [2023-08-27 11:28:39,405 INFO L125 PetriNetUnfolderBase]: For 811438/811750 co-relation queries the response was YES. [2023-08-27 11:28:39,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134584 conditions, 20885 events. 11752/20885 cut-off events. For 811438/811750 co-relation queries the response was YES. Maximal size of possible extension queue 1036. Compared 174772 event pairs, 1012 based on Foata normal form. 459/21325 useless extension candidates. Maximal degree in co-relation 134300. Up to 6444 conditions per place. [2023-08-27 11:28:39,613 INFO L140 encePairwiseOnDemand]: 387/411 looper letters, 505 selfloop transitions, 299 changer transitions 73/885 dead transitions. [2023-08-27 11:28:39,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 885 transitions, 15598 flow [2023-08-27 11:28:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-27 11:28:39,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-27 11:28:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6592 transitions. [2023-08-27 11:28:39,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4220770905365604 [2023-08-27 11:28:39,617 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6592 transitions. [2023-08-27 11:28:39,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6592 transitions. [2023-08-27 11:28:39,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:28:39,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6592 transitions. [2023-08-27 11:28:39,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 173.47368421052633) internal successors, (6592), 38 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:39,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 411.0) internal successors, (16029), 39 states have internal predecessors, (16029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:39,627 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 411.0) internal successors, (16029), 39 states have internal predecessors, (16029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:39,627 INFO L175 Difference]: Start difference. First operand has 322 places, 495 transitions, 10967 flow. Second operand 38 states and 6592 transitions. [2023-08-27 11:28:39,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 885 transitions, 15598 flow [2023-08-27 11:28:43,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 885 transitions, 15412 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-08-27 11:28:43,724 INFO L231 Difference]: Finished difference. Result has 358 places, 505 transitions, 11803 flow [2023-08-27 11:28:43,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=9991, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=11803, PETRI_PLACES=358, PETRI_TRANSITIONS=505} [2023-08-27 11:28:43,724 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 280 predicate places. [2023-08-27 11:28:43,724 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 505 transitions, 11803 flow [2023-08-27 11:28:43,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 166.71428571428572) internal successors, (2334), 14 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:43,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:28:43,725 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 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 11:28:43,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 11:28:43,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:28:43,926 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:28:43,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:28:43,926 INFO L85 PathProgramCache]: Analyzing trace with hash 979379246, now seen corresponding path program 1 times [2023-08-27 11:28:43,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:28:43,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657999868] [2023-08-27 11:28:43,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:28:43,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:28:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:28:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:28:43,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:28:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657999868] [2023-08-27 11:28:43,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657999868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:28:43,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:28:43,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:28:43,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306787237] [2023-08-27 11:28:43,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:28:43,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:28:43,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:28:43,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:28:43,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:28:43,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:28:43,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 505 transitions, 11803 flow. Second operand has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:43,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:28:43,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:28:43,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:28:48,827 INFO L124 PetriNetUnfolderBase]: 11571/20584 cut-off events. [2023-08-27 11:28:48,827 INFO L125 PetriNetUnfolderBase]: For 799628/800153 co-relation queries the response was YES. [2023-08-27 11:28:48,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141920 conditions, 20584 events. 11571/20584 cut-off events. For 799628/800153 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 172566 event pairs, 2076 based on Foata normal form. 141/20694 useless extension candidates. Maximal degree in co-relation 141622. Up to 17210 conditions per place. [2023-08-27 11:28:49,046 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 527 selfloop transitions, 77 changer transitions 0/612 dead transitions. [2023-08-27 11:28:49,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 612 transitions, 13917 flow [2023-08-27 11:28:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:28:49,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:28:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2103 transitions. [2023-08-27 11:28:49,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263990267639903 [2023-08-27 11:28:49,048 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2103 transitions. [2023-08-27 11:28:49,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2103 transitions. [2023-08-27 11:28:49,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:28:49,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2103 transitions. [2023-08-27 11:28:49,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 175.25) internal successors, (2103), 12 states have internal predecessors, (2103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:49,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:49,052 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:49,052 INFO L175 Difference]: Start difference. First operand has 358 places, 505 transitions, 11803 flow. Second operand 12 states and 2103 transitions. [2023-08-27 11:28:49,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 612 transitions, 13917 flow [2023-08-27 11:28:54,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 612 transitions, 13363 flow, removed 208 selfloop flow, removed 13 redundant places. [2023-08-27 11:28:54,866 INFO L231 Difference]: Finished difference. Result has 357 places, 512 transitions, 11694 flow [2023-08-27 11:28:54,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=11265, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11694, PETRI_PLACES=357, PETRI_TRANSITIONS=512} [2023-08-27 11:28:54,866 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 279 predicate places. [2023-08-27 11:28:54,867 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 512 transitions, 11694 flow [2023-08-27 11:28:54,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:54,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:28:54,867 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 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 11:28:54,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-08-27 11:28:54,867 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:28:54,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:28:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash 670863888, now seen corresponding path program 2 times [2023-08-27 11:28:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:28:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397166867] [2023-08-27 11:28:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:28:54,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:28:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:28:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:28:54,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:28:54,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397166867] [2023-08-27 11:28:54,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397166867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:28:54,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:28:54,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:28:54,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246069033] [2023-08-27 11:28:54,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:28:54,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:28:54,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:28:54,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:28:54,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:28:54,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:28:54,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 512 transitions, 11694 flow. Second operand has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:54,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:28:54,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:28:54,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:28:59,682 INFO L124 PetriNetUnfolderBase]: 11651/20715 cut-off events. [2023-08-27 11:28:59,682 INFO L125 PetriNetUnfolderBase]: For 799269/799515 co-relation queries the response was YES. [2023-08-27 11:28:59,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139313 conditions, 20715 events. 11651/20715 cut-off events. For 799269/799515 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 173630 event pairs, 1951 based on Foata normal form. 192/20876 useless extension candidates. Maximal degree in co-relation 139016. Up to 16149 conditions per place. [2023-08-27 11:28:59,908 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 527 selfloop transitions, 116 changer transitions 2/653 dead transitions. [2023-08-27 11:28:59,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 653 transitions, 14235 flow [2023-08-27 11:28:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:28:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:28:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2298 transitions. [2023-08-27 11:28:59,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300954519932622 [2023-08-27 11:28:59,910 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2298 transitions. [2023-08-27 11:28:59,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2298 transitions. [2023-08-27 11:28:59,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:28:59,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2298 transitions. [2023-08-27 11:28:59,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 176.76923076923077) internal successors, (2298), 13 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:59,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:59,914 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:28:59,915 INFO L175 Difference]: Start difference. First operand has 357 places, 512 transitions, 11694 flow. Second operand 13 states and 2298 transitions. [2023-08-27 11:28:59,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 653 transitions, 14235 flow [2023-08-27 11:29:05,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 653 transitions, 14108 flow, removed 19 selfloop flow, removed 9 redundant places. [2023-08-27 11:29:05,531 INFO L231 Difference]: Finished difference. Result has 359 places, 516 transitions, 12156 flow [2023-08-27 11:29:05,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=11129, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12156, PETRI_PLACES=359, PETRI_TRANSITIONS=516} [2023-08-27 11:29:05,532 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 281 predicate places. [2023-08-27 11:29:05,532 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 516 transitions, 12156 flow [2023-08-27 11:29:05,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:05,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:05,532 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 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 11:29:05,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-08-27 11:29:05,533 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:29:05,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:05,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1521367292, now seen corresponding path program 1 times [2023-08-27 11:29:05,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:05,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374637415] [2023-08-27 11:29:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:05,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:29:05,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:05,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374637415] [2023-08-27 11:29:05,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374637415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:29:05,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624754806] [2023-08-27 11:29:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:05,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:29:05,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:29:05,585 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:29:05,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 11:29:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:05,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 11:29:05,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:29:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:29:05,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:29:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:29:05,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624754806] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:29:05,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:29:05,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-27 11:29:05,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865353534] [2023-08-27 11:29:05,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:29:05,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 11:29:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 11:29:05,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-27 11:29:05,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:29:05,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 516 transitions, 12156 flow. Second operand has 16 states, 16 states have (on average 165.9375) internal successors, (2655), 16 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:05,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:05,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:29:05,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:11,424 INFO L124 PetriNetUnfolderBase]: 12445/22100 cut-off events. [2023-08-27 11:29:11,424 INFO L125 PetriNetUnfolderBase]: For 927118/927403 co-relation queries the response was YES. [2023-08-27 11:29:11,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151911 conditions, 22100 events. 12445/22100 cut-off events. For 927118/927403 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 187297 event pairs, 1315 based on Foata normal form. 318/22390 useless extension candidates. Maximal degree in co-relation 151609. Up to 10633 conditions per place. [2023-08-27 11:29:11,659 INFO L140 encePairwiseOnDemand]: 388/411 looper letters, 541 selfloop transitions, 306 changer transitions 10/865 dead transitions. [2023-08-27 11:29:11,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 865 transitions, 17433 flow [2023-08-27 11:29:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-27 11:29:11,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-27 11:29:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5559 transitions. [2023-08-27 11:29:11,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226733576642336 [2023-08-27 11:29:11,662 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5559 transitions. [2023-08-27 11:29:11,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5559 transitions. [2023-08-27 11:29:11,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:11,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5559 transitions. [2023-08-27 11:29:11,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 173.71875) internal successors, (5559), 32 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:11,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 411.0) internal successors, (13563), 33 states have internal predecessors, (13563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:11,672 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 411.0) internal successors, (13563), 33 states have internal predecessors, (13563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:11,672 INFO L175 Difference]: Start difference. First operand has 359 places, 516 transitions, 12156 flow. Second operand 32 states and 5559 transitions. [2023-08-27 11:29:11,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 865 transitions, 17433 flow [2023-08-27 11:29:17,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 865 transitions, 17259 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-08-27 11:29:17,974 INFO L231 Difference]: Finished difference. Result has 395 places, 577 transitions, 14646 flow [2023-08-27 11:29:17,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=12000, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=14646, PETRI_PLACES=395, PETRI_TRANSITIONS=577} [2023-08-27 11:29:17,974 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 317 predicate places. [2023-08-27 11:29:17,975 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 577 transitions, 14646 flow [2023-08-27 11:29:17,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 165.9375) internal successors, (2655), 16 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:17,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:17,975 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 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 11:29:17,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-27 11:29:18,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-08-27 11:29:18,179 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:29:18,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1425946349, now seen corresponding path program 1 times [2023-08-27 11:29:18,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:18,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151106756] [2023-08-27 11:29:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:18,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:29:18,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:18,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151106756] [2023-08-27 11:29:18,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151106756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:29:18,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:29:18,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:29:18,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852829792] [2023-08-27 11:29:18,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:29:18,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:29:18,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:18,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:29:18,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:29:18,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:29:18,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 577 transitions, 14646 flow. Second operand has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:18,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:18,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:29:18,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:23,947 INFO L124 PetriNetUnfolderBase]: 12525/22213 cut-off events. [2023-08-27 11:29:23,948 INFO L125 PetriNetUnfolderBase]: For 989987/990386 co-relation queries the response was YES. [2023-08-27 11:29:24,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161585 conditions, 22213 events. 12525/22213 cut-off events. For 989987/990386 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 188058 event pairs, 2220 based on Foata normal form. 156/22335 useless extension candidates. Maximal degree in co-relation 161271. Up to 18664 conditions per place. [2023-08-27 11:29:24,213 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 573 selfloop transitions, 89 changer transitions 0/670 dead transitions. [2023-08-27 11:29:24,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 670 transitions, 16740 flow [2023-08-27 11:29:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:29:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:29:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2097 transitions. [2023-08-27 11:29:24,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4251824817518248 [2023-08-27 11:29:24,214 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2097 transitions. [2023-08-27 11:29:24,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2097 transitions. [2023-08-27 11:29:24,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:24,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2097 transitions. [2023-08-27 11:29:24,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 174.75) internal successors, (2097), 12 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,218 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,218 INFO L175 Difference]: Start difference. First operand has 395 places, 577 transitions, 14646 flow. Second operand 12 states and 2097 transitions. [2023-08-27 11:29:24,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 670 transitions, 16740 flow [2023-08-27 11:29:31,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 670 transitions, 16354 flow, removed 139 selfloop flow, removed 11 redundant places. [2023-08-27 11:29:31,776 INFO L231 Difference]: Finished difference. Result has 396 places, 581 transitions, 14610 flow [2023-08-27 11:29:31,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=14260, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14610, PETRI_PLACES=396, PETRI_TRANSITIONS=581} [2023-08-27 11:29:31,776 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 318 predicate places. [2023-08-27 11:29:31,776 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 581 transitions, 14610 flow [2023-08-27 11:29:31,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:31,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:31,777 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 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 11:29:31,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-08-27 11:29:31,777 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:29:31,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:31,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2032193978, now seen corresponding path program 1 times [2023-08-27 11:29:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:31,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875940861] [2023-08-27 11:29:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:31,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:29:31,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:31,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875940861] [2023-08-27 11:29:31,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875940861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:29:31,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:29:31,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:29:31,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101340399] [2023-08-27 11:29:31,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:29:31,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:29:31,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:31,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:29:31,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:29:31,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:29:31,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 581 transitions, 14610 flow. Second operand has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:31,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:31,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:29:31,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:37,537 INFO L124 PetriNetUnfolderBase]: 12596/22308 cut-off events. [2023-08-27 11:29:37,537 INFO L125 PetriNetUnfolderBase]: For 1023330/1023723 co-relation queries the response was YES. [2023-08-27 11:29:37,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159262 conditions, 22308 events. 12596/22308 cut-off events. For 1023330/1023723 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 188477 event pairs, 1987 based on Foata normal form. 210/22493 useless extension candidates. Maximal degree in co-relation 158947. Up to 17698 conditions per place. [2023-08-27 11:29:37,808 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 622 selfloop transitions, 94 changer transitions 0/724 dead transitions. [2023-08-27 11:29:37,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 724 transitions, 17077 flow [2023-08-27 11:29:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:29:37,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:29:37,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2314 transitions. [2023-08-27 11:29:37,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43309002433090027 [2023-08-27 11:29:37,810 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2314 transitions. [2023-08-27 11:29:37,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2314 transitions. [2023-08-27 11:29:37,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:37,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2314 transitions. [2023-08-27 11:29:37,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:37,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:37,814 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:37,814 INFO L175 Difference]: Start difference. First operand has 396 places, 581 transitions, 14610 flow. Second operand 13 states and 2314 transitions. [2023-08-27 11:29:37,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 724 transitions, 17077 flow [2023-08-27 11:29:45,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 724 transitions, 16931 flow, removed 29 selfloop flow, removed 7 redundant places. [2023-08-27 11:29:45,418 INFO L231 Difference]: Finished difference. Result has 405 places, 586 transitions, 14654 flow [2023-08-27 11:29:45,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13735, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14654, PETRI_PLACES=405, PETRI_TRANSITIONS=586} [2023-08-27 11:29:45,418 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 327 predicate places. [2023-08-27 11:29:45,419 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 586 transitions, 14654 flow [2023-08-27 11:29:45,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:45,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:45,419 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 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 11:29:45,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-08-27 11:29:45,419 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:29:45,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash -148013103, now seen corresponding path program 2 times [2023-08-27 11:29:45,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:45,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361420672] [2023-08-27 11:29:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:45,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:29:45,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:45,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361420672] [2023-08-27 11:29:45,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361420672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:29:45,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:29:45,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:29:45,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236689709] [2023-08-27 11:29:45,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:29:45,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:29:45,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:45,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:29:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:29:45,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:29:45,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 586 transitions, 14654 flow. Second operand has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:45,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:45,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:29:45,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:51,057 INFO L124 PetriNetUnfolderBase]: 12342/21853 cut-off events. [2023-08-27 11:29:51,057 INFO L125 PetriNetUnfolderBase]: For 951053/951446 co-relation queries the response was YES. [2023-08-27 11:29:51,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155655 conditions, 21853 events. 12342/21853 cut-off events. For 951053/951446 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 183600 event pairs, 2074 based on Foata normal form. 243/22071 useless extension candidates. Maximal degree in co-relation 155337. Up to 17311 conditions per place. [2023-08-27 11:29:51,322 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 571 selfloop transitions, 116 changer transitions 5/700 dead transitions. [2023-08-27 11:29:51,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 700 transitions, 16561 flow [2023-08-27 11:29:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:29:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:29:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2292 transitions. [2023-08-27 11:29:51,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42897248736664795 [2023-08-27 11:29:51,324 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2292 transitions. [2023-08-27 11:29:51,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2292 transitions. [2023-08-27 11:29:51,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:51,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2292 transitions. [2023-08-27 11:29:51,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 176.30769230769232) internal successors, (2292), 13 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:51,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:51,328 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:51,328 INFO L175 Difference]: Start difference. First operand has 405 places, 586 transitions, 14654 flow. Second operand 13 states and 2292 transitions. [2023-08-27 11:29:51,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 700 transitions, 16561 flow [2023-08-27 11:29:59,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 700 transitions, 16307 flow, removed 79 selfloop flow, removed 8 redundant places. [2023-08-27 11:29:59,337 INFO L231 Difference]: Finished difference. Result has 409 places, 570 transitions, 14215 flow [2023-08-27 11:29:59,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13778, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14215, PETRI_PLACES=409, PETRI_TRANSITIONS=570} [2023-08-27 11:29:59,340 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 331 predicate places. [2023-08-27 11:29:59,340 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 570 transitions, 14215 flow [2023-08-27 11:29:59,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:59,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:59,341 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 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 11:29:59,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-08-27 11:29:59,341 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:29:59,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:59,341 INFO L85 PathProgramCache]: Analyzing trace with hash -910292478, now seen corresponding path program 2 times [2023-08-27 11:29:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:59,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935671368] [2023-08-27 11:29:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:59,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:29:59,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:59,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935671368] [2023-08-27 11:29:59,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935671368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:29:59,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:29:59,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:29:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750547470] [2023-08-27 11:29:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:29:59,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:29:59,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:29:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:29:59,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:29:59,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 570 transitions, 14215 flow. Second operand has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:59,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:59,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:29:59,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:30:04,913 INFO L124 PetriNetUnfolderBase]: 12157/21517 cut-off events. [2023-08-27 11:30:04,913 INFO L125 PetriNetUnfolderBase]: For 910483/910888 co-relation queries the response was YES. [2023-08-27 11:30:05,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152882 conditions, 21517 events. 12157/21517 cut-off events. For 910483/910888 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 180337 event pairs, 2193 based on Foata normal form. 135/21618 useless extension candidates. Maximal degree in co-relation 152563. Up to 18070 conditions per place. [2023-08-27 11:30:05,220 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 566 selfloop transitions, 91 changer transitions 2/667 dead transitions. [2023-08-27 11:30:05,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 667 transitions, 16155 flow [2023-08-27 11:30:05,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:30:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:30:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2105 transitions. [2023-08-27 11:30:05,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42680454176804544 [2023-08-27 11:30:05,221 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2105 transitions. [2023-08-27 11:30:05,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2105 transitions. [2023-08-27 11:30:05,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:30:05,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2105 transitions. [2023-08-27 11:30:05,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 175.41666666666666) internal successors, (2105), 12 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:05,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:05,225 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:05,225 INFO L175 Difference]: Start difference. First operand has 409 places, 570 transitions, 14215 flow. Second operand 12 states and 2105 transitions. [2023-08-27 11:30:05,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 667 transitions, 16155 flow [2023-08-27 11:30:12,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 667 transitions, 15897 flow, removed 50 selfloop flow, removed 7 redundant places. [2023-08-27 11:30:12,753 INFO L231 Difference]: Finished difference. Result has 416 places, 569 transitions, 14197 flow [2023-08-27 11:30:12,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13798, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14197, PETRI_PLACES=416, PETRI_TRANSITIONS=569} [2023-08-27 11:30:12,754 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 338 predicate places. [2023-08-27 11:30:12,754 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 569 transitions, 14197 flow [2023-08-27 11:30:12,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.375) internal successors, (1323), 8 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:12,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:30:12,754 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:30:12,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-08-27 11:30:12,754 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:30:12,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:30:12,754 INFO L85 PathProgramCache]: Analyzing trace with hash 324449251, now seen corresponding path program 1 times [2023-08-27 11:30:12,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:30:12,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248517196] [2023-08-27 11:30:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:30:12,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:30:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:30:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:30:12,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:30:12,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248517196] [2023-08-27 11:30:12,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248517196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:30:12,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321200358] [2023-08-27 11:30:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:30:12,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:30:12,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:30:12,806 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:30:12,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 11:30:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:30:12,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 11:30:12,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:30:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:30:12,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:30:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:30:13,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321200358] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:30:13,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:30:13,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-08-27 11:30:13,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477334393] [2023-08-27 11:30:13,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:30:13,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:30:13,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:30:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:30:13,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:30:13,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:30:13,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 569 transitions, 14197 flow. Second operand has 14 states, 14 states have (on average 166.5) internal successors, (2331), 14 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:13,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:30:13,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:30:13,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:30:18,605 INFO L124 PetriNetUnfolderBase]: 11870/21073 cut-off events. [2023-08-27 11:30:18,605 INFO L125 PetriNetUnfolderBase]: For 871341/871539 co-relation queries the response was YES. [2023-08-27 11:30:18,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148909 conditions, 21073 events. 11870/21073 cut-off events. For 871341/871539 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 176901 event pairs, 1696 based on Foata normal form. 135/21177 useless extension candidates. Maximal degree in co-relation 148591. Up to 15239 conditions per place. [2023-08-27 11:30:18,848 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 610 selfloop transitions, 142 changer transitions 4/764 dead transitions. [2023-08-27 11:30:18,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 764 transitions, 16453 flow [2023-08-27 11:30:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 11:30:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 11:30:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3998 transitions. [2023-08-27 11:30:18,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42293451814238864 [2023-08-27 11:30:18,850 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3998 transitions. [2023-08-27 11:30:18,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3998 transitions. [2023-08-27 11:30:18,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:30:18,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3998 transitions. [2023-08-27 11:30:18,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 173.82608695652175) internal successors, (3998), 23 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:18,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 411.0) internal successors, (9864), 24 states have internal predecessors, (9864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:18,857 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 411.0) internal successors, (9864), 24 states have internal predecessors, (9864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:18,857 INFO L175 Difference]: Start difference. First operand has 416 places, 569 transitions, 14197 flow. Second operand 23 states and 3998 transitions. [2023-08-27 11:30:18,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 764 transitions, 16453 flow [2023-08-27 11:30:25,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 764 transitions, 16296 flow, removed 33 selfloop flow, removed 7 redundant places. [2023-08-27 11:30:25,571 INFO L231 Difference]: Finished difference. Result has 424 places, 553 transitions, 13699 flow [2023-08-27 11:30:25,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13415, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13699, PETRI_PLACES=424, PETRI_TRANSITIONS=553} [2023-08-27 11:30:25,572 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 346 predicate places. [2023-08-27 11:30:25,572 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 553 transitions, 13699 flow [2023-08-27 11:30:25,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 166.5) internal successors, (2331), 14 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:25,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:30:25,572 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:30:25,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 11:30:25,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:30:25,773 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:30:25,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:30:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash 891968858, now seen corresponding path program 1 times [2023-08-27 11:30:25,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:30:25,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043115689] [2023-08-27 11:30:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:30:25,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:30:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:30:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:30:25,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:30:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043115689] [2023-08-27 11:30:25,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043115689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:30:25,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:30:25,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:30:25,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029797929] [2023-08-27 11:30:25,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:30:25,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:30:25,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:30:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:30:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:30:25,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:30:25,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 553 transitions, 13699 flow. Second operand has 8 states, 8 states have (on average 165.5) internal successors, (1324), 8 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:25,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:30:25,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:30:25,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:30:31,204 INFO L124 PetriNetUnfolderBase]: 11851/21083 cut-off events. [2023-08-27 11:30:31,205 INFO L125 PetriNetUnfolderBase]: For 841930/842293 co-relation queries the response was YES. [2023-08-27 11:30:31,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148636 conditions, 21083 events. 11851/21083 cut-off events. For 841930/842293 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 177283 event pairs, 1873 based on Foata normal form. 150/21208 useless extension candidates. Maximal degree in co-relation 148313. Up to 16673 conditions per place. [2023-08-27 11:30:31,451 INFO L140 encePairwiseOnDemand]: 393/411 looper letters, 584 selfloop transitions, 67 changer transitions 2/661 dead transitions. [2023-08-27 11:30:31,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 661 transitions, 15654 flow [2023-08-27 11:30:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:30:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:30:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2278 transitions. [2023-08-27 11:30:31,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263522365712147 [2023-08-27 11:30:31,453 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2278 transitions. [2023-08-27 11:30:31,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2278 transitions. [2023-08-27 11:30:31,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:30:31,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2278 transitions. [2023-08-27 11:30:31,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 175.23076923076923) internal successors, (2278), 13 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:31,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:31,457 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:31,457 INFO L175 Difference]: Start difference. First operand has 424 places, 553 transitions, 13699 flow. Second operand 13 states and 2278 transitions. [2023-08-27 11:30:31,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 661 transitions, 15654 flow [2023-08-27 11:30:37,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 661 transitions, 15376 flow, removed 20 selfloop flow, removed 14 redundant places. [2023-08-27 11:30:37,706 INFO L231 Difference]: Finished difference. Result has 424 places, 552 transitions, 13457 flow [2023-08-27 11:30:37,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13255, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13457, PETRI_PLACES=424, PETRI_TRANSITIONS=552} [2023-08-27 11:30:37,707 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 346 predicate places. [2023-08-27 11:30:37,707 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 552 transitions, 13457 flow [2023-08-27 11:30:37,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.5) internal successors, (1324), 8 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:37,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:30:37,707 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:30:37,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-08-27 11:30:37,707 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:30:37,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:30:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash 434925232, now seen corresponding path program 1 times [2023-08-27 11:30:37,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:30:37,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706459814] [2023-08-27 11:30:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:30:37,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:30:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:30:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:30:37,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:30:37,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706459814] [2023-08-27 11:30:37,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706459814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:30:37,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:30:37,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 11:30:37,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775171642] [2023-08-27 11:30:37,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:30:37,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:30:37,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:30:37,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:30:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:30:37,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:30:37,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 552 transitions, 13457 flow. Second operand has 9 states, 9 states have (on average 165.33333333333334) internal successors, (1488), 9 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:37,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:30:37,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:30:37,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:30:43,094 INFO L124 PetriNetUnfolderBase]: 11854/21066 cut-off events. [2023-08-27 11:30:43,094 INFO L125 PetriNetUnfolderBase]: For 772513/772786 co-relation queries the response was YES. [2023-08-27 11:30:43,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148333 conditions, 21066 events. 11854/21066 cut-off events. For 772513/772786 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 176932 event pairs, 2060 based on Foata normal form. 69/21104 useless extension candidates. Maximal degree in co-relation 148014. Up to 17791 conditions per place. [2023-08-27 11:30:43,331 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 583 selfloop transitions, 71 changer transitions 0/662 dead transitions. [2023-08-27 11:30:43,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 662 transitions, 15661 flow [2023-08-27 11:30:43,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:30:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:30:43,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2440 transitions. [2023-08-27 11:30:43,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4240528328119569 [2023-08-27 11:30:43,333 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2440 transitions. [2023-08-27 11:30:43,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2440 transitions. [2023-08-27 11:30:43,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:30:43,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2440 transitions. [2023-08-27 11:30:43,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 174.28571428571428) internal successors, (2440), 14 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:43,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:43,337 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:43,337 INFO L175 Difference]: Start difference. First operand has 424 places, 552 transitions, 13457 flow. Second operand 14 states and 2440 transitions. [2023-08-27 11:30:43,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 662 transitions, 15661 flow [2023-08-27 11:30:49,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 662 transitions, 15584 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-27 11:30:49,479 INFO L231 Difference]: Finished difference. Result has 435 places, 560 transitions, 13831 flow [2023-08-27 11:30:49,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13383, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13831, PETRI_PLACES=435, PETRI_TRANSITIONS=560} [2023-08-27 11:30:49,480 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 357 predicate places. [2023-08-27 11:30:49,480 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 560 transitions, 13831 flow [2023-08-27 11:30:49,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 165.33333333333334) internal successors, (1488), 9 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:49,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:30:49,480 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:30:49,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-08-27 11:30:49,480 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:30:49,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:30:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1272017776, now seen corresponding path program 1 times [2023-08-27 11:30:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:30:49,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210558731] [2023-08-27 11:30:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:30:49,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:30:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:30:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:30:49,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:30:49,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210558731] [2023-08-27 11:30:49,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210558731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:30:49,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:30:49,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:30:49,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121162823] [2023-08-27 11:30:49,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:30:49,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:30:49,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:30:49,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:30:49,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:30:49,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:30:49,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 560 transitions, 13831 flow. Second operand has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:49,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:30:49,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:30:49,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:30:54,812 INFO L124 PetriNetUnfolderBase]: 11763/20980 cut-off events. [2023-08-27 11:30:54,812 INFO L125 PetriNetUnfolderBase]: For 773258/773462 co-relation queries the response was YES. [2023-08-27 11:30:55,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147396 conditions, 20980 events. 11763/20980 cut-off events. For 773258/773462 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 176814 event pairs, 1882 based on Foata normal form. 102/21060 useless extension candidates. Maximal degree in co-relation 147070. Up to 16690 conditions per place. [2023-08-27 11:30:55,076 INFO L140 encePairwiseOnDemand]: 394/411 looper letters, 583 selfloop transitions, 95 changer transitions 0/686 dead transitions. [2023-08-27 11:30:55,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 686 transitions, 16127 flow [2023-08-27 11:30:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:30:55,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:30:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2293 transitions. [2023-08-27 11:30:55,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4291596481377503 [2023-08-27 11:30:55,078 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2293 transitions. [2023-08-27 11:30:55,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2293 transitions. [2023-08-27 11:30:55,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:30:55,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2293 transitions. [2023-08-27 11:30:55,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 176.3846153846154) internal successors, (2293), 13 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:55,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:55,082 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:30:55,082 INFO L175 Difference]: Start difference. First operand has 435 places, 560 transitions, 13831 flow. Second operand 13 states and 2293 transitions. [2023-08-27 11:30:55,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 686 transitions, 16127 flow [2023-08-27 11:31:01,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 686 transitions, 16015 flow, removed 16 selfloop flow, removed 11 redundant places. [2023-08-27 11:31:01,092 INFO L231 Difference]: Finished difference. Result has 436 places, 556 transitions, 13676 flow [2023-08-27 11:31:01,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13428, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13676, PETRI_PLACES=436, PETRI_TRANSITIONS=556} [2023-08-27 11:31:01,092 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 358 predicate places. [2023-08-27 11:31:01,093 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 556 transitions, 13676 flow [2023-08-27 11:31:01,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:01,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:01,093 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:01,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-08-27 11:31:01,093 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:31:01,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:01,093 INFO L85 PathProgramCache]: Analyzing trace with hash 258014349, now seen corresponding path program 1 times [2023-08-27 11:31:01,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:01,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442962423] [2023-08-27 11:31:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:01,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:31:01,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:01,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442962423] [2023-08-27 11:31:01,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442962423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:31:01,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:31:01,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:31:01,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81468357] [2023-08-27 11:31:01,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:31:01,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:31:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:01,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:31:01,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:31:01,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:31:01,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 556 transitions, 13676 flow. Second operand has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:01,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:01,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:31:01,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:06,364 INFO L124 PetriNetUnfolderBase]: 11775/21022 cut-off events. [2023-08-27 11:31:06,364 INFO L125 PetriNetUnfolderBase]: For 748991/749297 co-relation queries the response was YES. [2023-08-27 11:31:06,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148081 conditions, 21022 events. 11775/21022 cut-off events. For 748991/749297 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 177594 event pairs, 1915 based on Foata normal form. 105/21102 useless extension candidates. Maximal degree in co-relation 147757. Up to 16714 conditions per place. [2023-08-27 11:31:06,626 INFO L140 encePairwiseOnDemand]: 394/411 looper letters, 581 selfloop transitions, 89 changer transitions 0/678 dead transitions. [2023-08-27 11:31:06,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 678 transitions, 15967 flow [2023-08-27 11:31:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:31:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:31:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2292 transitions. [2023-08-27 11:31:06,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42897248736664795 [2023-08-27 11:31:06,628 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2292 transitions. [2023-08-27 11:31:06,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2292 transitions. [2023-08-27 11:31:06,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:06,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2292 transitions. [2023-08-27 11:31:06,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 176.30769230769232) internal successors, (2292), 13 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:06,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:06,632 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:06,632 INFO L175 Difference]: Start difference. First operand has 436 places, 556 transitions, 13676 flow. Second operand 13 states and 2292 transitions. [2023-08-27 11:31:06,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 678 transitions, 15967 flow [2023-08-27 11:31:12,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 678 transitions, 15883 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-08-27 11:31:12,758 INFO L231 Difference]: Finished difference. Result has 444 places, 555 transitions, 13722 flow [2023-08-27 11:31:12,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13544, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13722, PETRI_PLACES=444, PETRI_TRANSITIONS=555} [2023-08-27 11:31:12,759 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 366 predicate places. [2023-08-27 11:31:12,759 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 555 transitions, 13722 flow [2023-08-27 11:31:12,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:12,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:12,759 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:12,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-08-27 11:31:12,760 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:31:12,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:12,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2098615374, now seen corresponding path program 1 times [2023-08-27 11:31:12,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:12,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689521422] [2023-08-27 11:31:12,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:12,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:31:12,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:12,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689521422] [2023-08-27 11:31:12,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689521422] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:31:12,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753409328] [2023-08-27 11:31:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:12,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:31:12,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:31:12,816 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:31:12,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 11:31:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:12,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 11:31:12,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:31:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:31:12,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:31:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:31:13,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753409328] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:31:13,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:31:13,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-08-27 11:31:13,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454603738] [2023-08-27 11:31:13,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:31:13,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:31:13,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:31:13,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:31:13,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:31:13,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 555 transitions, 13722 flow. Second operand has 14 states, 14 states have (on average 166.71428571428572) internal successors, (2334), 14 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:13,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:13,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:31:13,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:18,505 INFO L124 PetriNetUnfolderBase]: 11781/21022 cut-off events. [2023-08-27 11:31:18,506 INFO L125 PetriNetUnfolderBase]: For 754904/755138 co-relation queries the response was YES. [2023-08-27 11:31:18,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148415 conditions, 21022 events. 11781/21022 cut-off events. For 754904/755138 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 177325 event pairs, 1699 based on Foata normal form. 90/21084 useless extension candidates. Maximal degree in co-relation 148090. Up to 15873 conditions per place. [2023-08-27 11:31:18,764 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 603 selfloop transitions, 133 changer transitions 4/748 dead transitions. [2023-08-27 11:31:18,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 748 transitions, 16671 flow [2023-08-27 11:31:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 11:31:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 11:31:18,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3985 transitions. [2023-08-27 11:31:18,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215592933460277 [2023-08-27 11:31:18,766 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3985 transitions. [2023-08-27 11:31:18,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3985 transitions. [2023-08-27 11:31:18,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:18,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3985 transitions. [2023-08-27 11:31:18,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 173.2608695652174) internal successors, (3985), 23 states have internal predecessors, (3985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:18,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 411.0) internal successors, (9864), 24 states have internal predecessors, (9864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:18,773 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 411.0) internal successors, (9864), 24 states have internal predecessors, (9864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:18,773 INFO L175 Difference]: Start difference. First operand has 444 places, 555 transitions, 13722 flow. Second operand 23 states and 3985 transitions. [2023-08-27 11:31:18,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 748 transitions, 16671 flow [2023-08-27 11:31:24,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 748 transitions, 16433 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-08-27 11:31:24,509 INFO L231 Difference]: Finished difference. Result has 459 places, 564 transitions, 13976 flow [2023-08-27 11:31:24,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13254, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13976, PETRI_PLACES=459, PETRI_TRANSITIONS=564} [2023-08-27 11:31:24,510 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 381 predicate places. [2023-08-27 11:31:24,510 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 564 transitions, 13976 flow [2023-08-27 11:31:24,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 166.71428571428572) internal successors, (2334), 14 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:24,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:24,510 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:24,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 11:31:24,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:31:24,711 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:31:24,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:24,711 INFO L85 PathProgramCache]: Analyzing trace with hash 365581220, now seen corresponding path program 1 times [2023-08-27 11:31:24,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:24,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555495606] [2023-08-27 11:31:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:24,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:31:24,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:24,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555495606] [2023-08-27 11:31:24,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555495606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:31:24,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:31:24,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:31:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45187936] [2023-08-27 11:31:24,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:31:24,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:31:24,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:24,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:31:24,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:31:24,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:31:24,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 564 transitions, 13976 flow. Second operand has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:24,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:24,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:31:24,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:30,127 INFO L124 PetriNetUnfolderBase]: 11759/20914 cut-off events. [2023-08-27 11:31:30,127 INFO L125 PetriNetUnfolderBase]: For 743811/744015 co-relation queries the response was YES. [2023-08-27 11:31:30,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149333 conditions, 20914 events. 11759/20914 cut-off events. For 743811/744015 co-relation queries the response was YES. Maximal size of possible extension queue 1034. Compared 175697 event pairs, 1789 based on Foata normal form. 75/20973 useless extension candidates. Maximal degree in co-relation 148999. Up to 16455 conditions per place. [2023-08-27 11:31:30,380 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 587 selfloop transitions, 98 changer transitions 0/693 dead transitions. [2023-08-27 11:31:30,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 693 transitions, 16050 flow [2023-08-27 11:31:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:31:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:31:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2462 transitions. [2023-08-27 11:31:30,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4278762599930483 [2023-08-27 11:31:30,382 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2462 transitions. [2023-08-27 11:31:30,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2462 transitions. [2023-08-27 11:31:30,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:30,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2462 transitions. [2023-08-27 11:31:30,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 175.85714285714286) internal successors, (2462), 14 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:30,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:30,387 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:30,387 INFO L175 Difference]: Start difference. First operand has 459 places, 564 transitions, 13976 flow. Second operand 14 states and 2462 transitions. [2023-08-27 11:31:30,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 693 transitions, 16050 flow [2023-08-27 11:31:36,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 693 transitions, 15790 flow, removed 40 selfloop flow, removed 15 redundant places. [2023-08-27 11:31:36,343 INFO L231 Difference]: Finished difference. Result has 451 places, 558 transitions, 13705 flow [2023-08-27 11:31:36,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13509, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13705, PETRI_PLACES=451, PETRI_TRANSITIONS=558} [2023-08-27 11:31:36,343 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 373 predicate places. [2023-08-27 11:31:36,343 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 558 transitions, 13705 flow [2023-08-27 11:31:36,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:36,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:36,344 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:36,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-08-27 11:31:36,344 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:31:36,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash 706224594, now seen corresponding path program 1 times [2023-08-27 11:31:36,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:36,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436228387] [2023-08-27 11:31:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:36,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:31:36,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:36,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436228387] [2023-08-27 11:31:36,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436228387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:31:36,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:31:36,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 11:31:36,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792493406] [2023-08-27 11:31:36,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:31:36,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:31:36,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:36,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:31:36,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:31:36,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:31:36,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 558 transitions, 13705 flow. Second operand has 9 states, 9 states have (on average 165.22222222222223) internal successors, (1487), 9 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:36,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:36,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:31:36,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:41,545 INFO L124 PetriNetUnfolderBase]: 11725/20871 cut-off events. [2023-08-27 11:31:41,545 INFO L125 PetriNetUnfolderBase]: For 715018/715204 co-relation queries the response was YES. [2023-08-27 11:31:41,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148575 conditions, 20871 events. 11725/20871 cut-off events. For 715018/715204 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 175297 event pairs, 2054 based on Foata normal form. 57/20897 useless extension candidates. Maximal degree in co-relation 148248. Up to 17562 conditions per place. [2023-08-27 11:31:42,003 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 575 selfloop transitions, 74 changer transitions 0/657 dead transitions. [2023-08-27 11:31:42,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 657 transitions, 15641 flow [2023-08-27 11:31:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:31:42,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:31:42,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2434 transitions. [2023-08-27 11:31:42,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230100799443865 [2023-08-27 11:31:42,006 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2434 transitions. [2023-08-27 11:31:42,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2434 transitions. [2023-08-27 11:31:42,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:42,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2434 transitions. [2023-08-27 11:31:42,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 173.85714285714286) internal successors, (2434), 14 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:42,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:42,010 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:42,010 INFO L175 Difference]: Start difference. First operand has 451 places, 558 transitions, 13705 flow. Second operand 14 states and 2434 transitions. [2023-08-27 11:31:42,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 657 transitions, 15641 flow [2023-08-27 11:31:47,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 657 transitions, 15589 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-27 11:31:47,550 INFO L231 Difference]: Finished difference. Result has 461 places, 562 transitions, 13908 flow [2023-08-27 11:31:47,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13588, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13908, PETRI_PLACES=461, PETRI_TRANSITIONS=562} [2023-08-27 11:31:47,551 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 383 predicate places. [2023-08-27 11:31:47,551 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 562 transitions, 13908 flow [2023-08-27 11:31:47,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 165.22222222222223) internal successors, (1487), 9 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:47,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:47,551 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:47,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-08-27 11:31:47,551 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:31:47,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:47,552 INFO L85 PathProgramCache]: Analyzing trace with hash 588105968, now seen corresponding path program 2 times [2023-08-27 11:31:47,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:47,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274756559] [2023-08-27 11:31:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:47,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:31:47,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:47,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274756559] [2023-08-27 11:31:47,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274756559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:31:47,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:31:47,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:31:47,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308804111] [2023-08-27 11:31:47,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:31:47,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:31:47,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:47,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:31:47,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:31:47,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:31:47,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 562 transitions, 13908 flow. Second operand has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:47,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:47,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:31:47,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:52,818 INFO L124 PetriNetUnfolderBase]: 11696/20802 cut-off events. [2023-08-27 11:31:52,818 INFO L125 PetriNetUnfolderBase]: For 730245/730455 co-relation queries the response was YES. [2023-08-27 11:31:53,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148025 conditions, 20802 events. 11696/20802 cut-off events. For 730245/730455 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 174408 event pairs, 1837 based on Foata normal form. 93/20873 useless extension candidates. Maximal degree in co-relation 147692. Up to 17082 conditions per place. [2023-08-27 11:31:53,078 INFO L140 encePairwiseOnDemand]: 394/411 looper letters, 570 selfloop transitions, 70 changer transitions 0/648 dead transitions. [2023-08-27 11:31:53,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 648 transitions, 15647 flow [2023-08-27 11:31:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:31:53,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:31:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2102 transitions. [2023-08-27 11:31:53,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261962692619627 [2023-08-27 11:31:53,080 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2102 transitions. [2023-08-27 11:31:53,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2102 transitions. [2023-08-27 11:31:53,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:53,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2102 transitions. [2023-08-27 11:31:53,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 175.16666666666666) internal successors, (2102), 12 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:53,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:53,083 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:53,083 INFO L175 Difference]: Start difference. First operand has 461 places, 562 transitions, 13908 flow. Second operand 12 states and 2102 transitions. [2023-08-27 11:31:53,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 648 transitions, 15647 flow [2023-08-27 11:31:59,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 648 transitions, 15550 flow, removed 6 selfloop flow, removed 13 redundant places. [2023-08-27 11:31:59,087 INFO L231 Difference]: Finished difference. Result has 451 places, 555 transitions, 13677 flow [2023-08-27 11:31:59,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13537, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13677, PETRI_PLACES=451, PETRI_TRANSITIONS=555} [2023-08-27 11:31:59,087 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 373 predicate places. [2023-08-27 11:31:59,087 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 555 transitions, 13677 flow [2023-08-27 11:31:59,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:59,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:59,088 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:59,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-08-27 11:31:59,088 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:31:59,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:59,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1425637647, now seen corresponding path program 2 times [2023-08-27 11:31:59,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:59,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725974491] [2023-08-27 11:31:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:59,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:31:59,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:59,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725974491] [2023-08-27 11:31:59,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725974491] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:31:59,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127955378] [2023-08-27 11:31:59,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:31:59,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:31:59,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:31:59,139 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:31:59,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 11:31:59,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 11:31:59,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:31:59,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 11:31:59,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:31:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:31:59,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:31:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:31:59,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127955378] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:31:59,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:31:59,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-27 11:31:59,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770061948] [2023-08-27 11:31:59,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:31:59,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 11:31:59,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:59,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 11:31:59,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-27 11:31:59,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:31:59,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 555 transitions, 13677 flow. Second operand has 16 states, 16 states have (on average 166.1875) internal successors, (2659), 16 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:59,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:59,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:31:59,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:05,020 INFO L124 PetriNetUnfolderBase]: 11862/21121 cut-off events. [2023-08-27 11:32:05,020 INFO L125 PetriNetUnfolderBase]: For 769535/769709 co-relation queries the response was YES. [2023-08-27 11:32:05,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149551 conditions, 21121 events. 11862/21121 cut-off events. For 769535/769709 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 177270 event pairs, 1246 based on Foata normal form. 159/21252 useless extension candidates. Maximal degree in co-relation 149217. Up to 10315 conditions per place. [2023-08-27 11:32:05,279 INFO L140 encePairwiseOnDemand]: 393/411 looper letters, 534 selfloop transitions, 255 changer transitions 17/814 dead transitions. [2023-08-27 11:32:05,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 814 transitions, 17815 flow [2023-08-27 11:32:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-27 11:32:05,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-27 11:32:05,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4689 transitions. [2023-08-27 11:32:05,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42254663422546634 [2023-08-27 11:32:05,282 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4689 transitions. [2023-08-27 11:32:05,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4689 transitions. [2023-08-27 11:32:05,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:05,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4689 transitions. [2023-08-27 11:32:05,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 173.66666666666666) internal successors, (4689), 27 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:05,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 411.0) internal successors, (11508), 28 states have internal predecessors, (11508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:05,289 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 411.0) internal successors, (11508), 28 states have internal predecessors, (11508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:05,289 INFO L175 Difference]: Start difference. First operand has 451 places, 555 transitions, 13677 flow. Second operand 27 states and 4689 transitions. [2023-08-27 11:32:05,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 814 transitions, 17815 flow [2023-08-27 11:32:10,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 814 transitions, 17705 flow, removed 20 selfloop flow, removed 10 redundant places. [2023-08-27 11:32:10,867 INFO L231 Difference]: Finished difference. Result has 464 places, 560 transitions, 14446 flow [2023-08-27 11:32:10,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13236, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14446, PETRI_PLACES=464, PETRI_TRANSITIONS=560} [2023-08-27 11:32:10,867 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 386 predicate places. [2023-08-27 11:32:10,867 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 560 transitions, 14446 flow [2023-08-27 11:32:10,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 166.1875) internal successors, (2659), 16 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:10,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:10,868 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:10,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 11:32:11,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-08-27 11:32:11,069 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:32:11,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:11,069 INFO L85 PathProgramCache]: Analyzing trace with hash -984316761, now seen corresponding path program 1 times [2023-08-27 11:32:11,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:11,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545851848] [2023-08-27 11:32:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:11,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:32:11,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545851848] [2023-08-27 11:32:11,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545851848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:11,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:11,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 11:32:11,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386822446] [2023-08-27 11:32:11,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:11,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:32:11,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:11,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:32:11,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:32:11,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:32:11,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 560 transitions, 14446 flow. Second operand has 9 states, 9 states have (on average 165.33333333333334) internal successors, (1488), 9 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:11,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:11,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:32:11,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:16,665 INFO L124 PetriNetUnfolderBase]: 11802/21009 cut-off events. [2023-08-27 11:32:16,665 INFO L125 PetriNetUnfolderBase]: For 754790/754961 co-relation queries the response was YES. [2023-08-27 11:32:16,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153195 conditions, 21009 events. 11802/21009 cut-off events. For 754790/754961 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 176245 event pairs, 2232 based on Foata normal form. 36/21017 useless extension candidates. Maximal degree in co-relation 152861. Up to 18696 conditions per place. [2023-08-27 11:32:16,919 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 575 selfloop transitions, 48 changer transitions 0/631 dead transitions. [2023-08-27 11:32:16,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 631 transitions, 16229 flow [2023-08-27 11:32:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:32:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:32:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2084 transitions. [2023-08-27 11:32:16,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42254663422546634 [2023-08-27 11:32:16,921 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2084 transitions. [2023-08-27 11:32:16,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2084 transitions. [2023-08-27 11:32:16,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:16,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2084 transitions. [2023-08-27 11:32:16,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 173.66666666666666) internal successors, (2084), 12 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,925 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,925 INFO L175 Difference]: Start difference. First operand has 464 places, 560 transitions, 14446 flow. Second operand 12 states and 2084 transitions. [2023-08-27 11:32:16,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 631 transitions, 16229 flow [2023-08-27 11:32:22,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 631 transitions, 15851 flow, removed 82 selfloop flow, removed 14 redundant places. [2023-08-27 11:32:22,776 INFO L231 Difference]: Finished difference. Result has 464 places, 565 transitions, 14355 flow [2023-08-27 11:32:22,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=14072, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14355, PETRI_PLACES=464, PETRI_TRANSITIONS=565} [2023-08-27 11:32:22,776 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 386 predicate places. [2023-08-27 11:32:22,777 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 565 transitions, 14355 flow [2023-08-27 11:32:22,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 165.33333333333334) internal successors, (1488), 9 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:22,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:22,777 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:22,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-08-27 11:32:22,777 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:32:22,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:22,777 INFO L85 PathProgramCache]: Analyzing trace with hash 434925159, now seen corresponding path program 2 times [2023-08-27 11:32:22,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:22,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331194930] [2023-08-27 11:32:22,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:22,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:32:22,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:22,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331194930] [2023-08-27 11:32:22,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331194930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:22,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:22,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 11:32:22,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904620769] [2023-08-27 11:32:22,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:22,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:32:22,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:22,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:32:22,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:32:22,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:32:22,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 565 transitions, 14355 flow. Second operand has 9 states, 9 states have (on average 165.33333333333334) internal successors, (1488), 9 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:22,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:22,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:32:22,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:28,530 INFO L124 PetriNetUnfolderBase]: 11796/20991 cut-off events. [2023-08-27 11:32:28,531 INFO L125 PetriNetUnfolderBase]: For 745256/745427 co-relation queries the response was YES. [2023-08-27 11:32:28,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150814 conditions, 20991 events. 11796/20991 cut-off events. For 745256/745427 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 175958 event pairs, 2235 based on Foata normal form. 36/20999 useless extension candidates. Maximal degree in co-relation 150478. Up to 18673 conditions per place. [2023-08-27 11:32:28,779 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 575 selfloop transitions, 48 changer transitions 0/631 dead transitions. [2023-08-27 11:32:28,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 631 transitions, 15888 flow [2023-08-27 11:32:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:32:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:32:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2249 transitions. [2023-08-27 11:32:28,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209245742092457 [2023-08-27 11:32:28,781 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2249 transitions. [2023-08-27 11:32:28,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2249 transitions. [2023-08-27 11:32:28,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:28,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2249 transitions. [2023-08-27 11:32:28,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:28,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:28,785 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:28,785 INFO L175 Difference]: Start difference. First operand has 464 places, 565 transitions, 14355 flow. Second operand 13 states and 2249 transitions. [2023-08-27 11:32:28,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 631 transitions, 15888 flow [2023-08-27 11:32:34,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 631 transitions, 15834 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-08-27 11:32:34,368 INFO L231 Difference]: Finished difference. Result has 470 places, 562 transitions, 14258 flow [2023-08-27 11:32:34,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=14162, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14258, PETRI_PLACES=470, PETRI_TRANSITIONS=562} [2023-08-27 11:32:34,368 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 392 predicate places. [2023-08-27 11:32:34,368 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 562 transitions, 14258 flow [2023-08-27 11:32:34,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 165.33333333333334) internal successors, (1488), 9 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:34,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:34,369 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:34,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2023-08-27 11:32:34,369 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:32:34,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1383340352, now seen corresponding path program 2 times [2023-08-27 11:32:34,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:34,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004181473] [2023-08-27 11:32:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:34,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:32:34,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:34,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004181473] [2023-08-27 11:32:34,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004181473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:34,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:34,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:32:34,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191474791] [2023-08-27 11:32:34,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:34,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:32:34,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:34,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:32:34,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:32:34,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:32:34,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 562 transitions, 14258 flow. Second operand has 8 states, 8 states have (on average 165.5) internal successors, (1324), 8 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:34,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:34,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:32:34,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:39,693 INFO L124 PetriNetUnfolderBase]: 11775/20938 cut-off events. [2023-08-27 11:32:39,693 INFO L125 PetriNetUnfolderBase]: For 751622/751796 co-relation queries the response was YES. [2023-08-27 11:32:39,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150209 conditions, 20938 events. 11775/20938 cut-off events. For 751622/751796 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 175334 event pairs, 1936 based on Foata normal form. 60/20979 useless extension candidates. Maximal degree in co-relation 149871. Up to 17028 conditions per place. [2023-08-27 11:32:39,964 INFO L140 encePairwiseOnDemand]: 393/411 looper letters, 581 selfloop transitions, 66 changer transitions 0/655 dead transitions. [2023-08-27 11:32:39,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 655 transitions, 15956 flow [2023-08-27 11:32:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:32:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:32:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2106 transitions. [2023-08-27 11:32:39,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42700729927007297 [2023-08-27 11:32:39,966 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2106 transitions. [2023-08-27 11:32:39,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2106 transitions. [2023-08-27 11:32:39,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:39,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2106 transitions. [2023-08-27 11:32:39,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 175.5) internal successors, (2106), 12 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:39,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:39,970 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:39,970 INFO L175 Difference]: Start difference. First operand has 470 places, 562 transitions, 14258 flow. Second operand 12 states and 2106 transitions. [2023-08-27 11:32:39,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 655 transitions, 15956 flow [2023-08-27 11:32:45,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 655 transitions, 15841 flow, removed 31 selfloop flow, removed 11 redundant places. [2023-08-27 11:32:45,656 INFO L231 Difference]: Finished difference. Result has 465 places, 557 transitions, 14023 flow [2023-08-27 11:32:45,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=13891, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14023, PETRI_PLACES=465, PETRI_TRANSITIONS=557} [2023-08-27 11:32:45,656 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 387 predicate places. [2023-08-27 11:32:45,656 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 557 transitions, 14023 flow [2023-08-27 11:32:45,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.5) internal successors, (1324), 8 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:45,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:45,657 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:45,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-08-27 11:32:45,657 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:32:45,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:45,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2020309917, now seen corresponding path program 1 times [2023-08-27 11:32:45,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:45,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032041275] [2023-08-27 11:32:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:45,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:32:45,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:45,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032041275] [2023-08-27 11:32:45,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032041275] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:45,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230125252] [2023-08-27 11:32:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:45,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:45,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:45,721 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:32:45,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 11:32:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:45,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 11:32:45,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:32:45,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:32:45,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230125252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:45,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:32:45,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-08-27 11:32:45,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000292866] [2023-08-27 11:32:45,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:45,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:32:45,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:32:45,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:32:45,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 411 [2023-08-27 11:32:45,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 557 transitions, 14023 flow. Second operand has 7 states, 7 states have (on average 166.42857142857142) internal successors, (1165), 7 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 11:32:45,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:45,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 411 [2023-08-27 11:32:45,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:51,262 INFO L124 PetriNetUnfolderBase]: 11523/20438 cut-off events. [2023-08-27 11:32:51,262 INFO L125 PetriNetUnfolderBase]: For 743522/743666 co-relation queries the response was YES. [2023-08-27 11:32:51,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142397 conditions, 20438 events. 11523/20438 cut-off events. For 743522/743666 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 169989 event pairs, 4547 based on Foata normal form. 258/20647 useless extension candidates. Maximal degree in co-relation 142141. Up to 11755 conditions per place. [2023-08-27 11:32:51,518 INFO L140 encePairwiseOnDemand]: 391/411 looper letters, 375 selfloop transitions, 283 changer transitions 16/682 dead transitions. [2023-08-27 11:32:51,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 682 transitions, 15089 flow [2023-08-27 11:32:51,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:32:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:32:51,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2630 transitions. [2023-08-27 11:32:51,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42660178426601786 [2023-08-27 11:32:51,520 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2630 transitions. [2023-08-27 11:32:51,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2630 transitions. [2023-08-27 11:32:51,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:51,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2630 transitions. [2023-08-27 11:32:51,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 175.33333333333334) internal successors, (2630), 15 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 411.0) internal successors, (6576), 16 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,525 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 411.0) internal successors, (6576), 16 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,525 INFO L175 Difference]: Start difference. First operand has 465 places, 557 transitions, 14023 flow. Second operand 15 states and 2630 transitions. [2023-08-27 11:32:51,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 682 transitions, 15089 flow [2023-08-27 11:32:56,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 682 transitions, 14372 flow, removed 132 selfloop flow, removed 39 redundant places. [2023-08-27 11:32:56,223 INFO L231 Difference]: Finished difference. Result has 420 places, 540 transitions, 12373 flow [2023-08-27 11:32:56,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=11487, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=12373, PETRI_PLACES=420, PETRI_TRANSITIONS=540} [2023-08-27 11:32:56,224 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 342 predicate places. [2023-08-27 11:32:56,224 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 540 transitions, 12373 flow [2023-08-27 11:32:56,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.42857142857142) internal successors, (1165), 7 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 11:32:56,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:56,224 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:56,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 11:32:56,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:56,429 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:32:56,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:56,429 INFO L85 PathProgramCache]: Analyzing trace with hash -637512586, now seen corresponding path program 1 times [2023-08-27 11:32:56,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:56,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419029698] [2023-08-27 11:32:56,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:56,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:32:56,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:56,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419029698] [2023-08-27 11:32:56,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419029698] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:56,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290530269] [2023-08-27 11:32:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:56,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:56,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:56,503 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:32:56,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 11:32:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:56,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 11:32:56,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:32:56,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:32:56,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290530269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:56,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:32:56,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2023-08-27 11:32:56,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540303004] [2023-08-27 11:32:56,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:56,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:32:56,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:56,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:32:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:32:56,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:32:56,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 540 transitions, 12373 flow. Second operand has 10 states, 10 states have (on average 160.5) internal successors, (1605), 10 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:56,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:56,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:32:56,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:01,557 INFO L124 PetriNetUnfolderBase]: 11376/20197 cut-off events. [2023-08-27 11:33:01,557 INFO L125 PetriNetUnfolderBase]: For 590693/590837 co-relation queries the response was YES. [2023-08-27 11:33:01,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138856 conditions, 20197 events. 11376/20197 cut-off events. For 590693/590837 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 167974 event pairs, 2214 based on Foata normal form. 51/20226 useless extension candidates. Maximal degree in co-relation 138541. Up to 18203 conditions per place. [2023-08-27 11:33:01,796 INFO L140 encePairwiseOnDemand]: 394/411 looper letters, 596 selfloop transitions, 23 changer transitions 0/627 dead transitions. [2023-08-27 11:33:01,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 627 transitions, 14259 flow [2023-08-27 11:33:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:33:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:33:01,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2335 transitions. [2023-08-27 11:33:01,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40580465762947515 [2023-08-27 11:33:01,798 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2335 transitions. [2023-08-27 11:33:01,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2335 transitions. [2023-08-27 11:33:01,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:01,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2335 transitions. [2023-08-27 11:33:01,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.78571428571428) internal successors, (2335), 14 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:01,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:01,803 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:01,803 INFO L175 Difference]: Start difference. First operand has 420 places, 540 transitions, 12373 flow. Second operand 14 states and 2335 transitions. [2023-08-27 11:33:01,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 627 transitions, 14259 flow [2023-08-27 11:33:05,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 627 transitions, 14103 flow, removed 69 selfloop flow, removed 3 redundant places. [2023-08-27 11:33:05,668 INFO L231 Difference]: Finished difference. Result has 433 places, 547 transitions, 12490 flow [2023-08-27 11:33:05,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=12227, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12490, PETRI_PLACES=433, PETRI_TRANSITIONS=547} [2023-08-27 11:33:05,669 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 355 predicate places. [2023-08-27 11:33:05,669 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 547 transitions, 12490 flow [2023-08-27 11:33:05,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.5) internal successors, (1605), 10 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:05,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:05,669 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:33:05,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 11:33:05,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:33:05,871 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:33:05,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:05,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1454595034, now seen corresponding path program 1 times [2023-08-27 11:33:05,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:05,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37939226] [2023-08-27 11:33:05,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:05,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:33:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37939226] [2023-08-27 11:33:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37939226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:05,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:33:05,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:33:05,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649772787] [2023-08-27 11:33:05,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:05,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:33:05,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:05,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:33:05,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:33:05,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:33:05,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 547 transitions, 12490 flow. Second operand has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:05,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:05,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:33:05,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:10,926 INFO L124 PetriNetUnfolderBase]: 11448/20326 cut-off events. [2023-08-27 11:33:10,926 INFO L125 PetriNetUnfolderBase]: For 597980/598124 co-relation queries the response was YES. [2023-08-27 11:33:11,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139541 conditions, 20326 events. 11448/20326 cut-off events. For 597980/598124 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 169254 event pairs, 2262 based on Foata normal form. 51/20355 useless extension candidates. Maximal degree in co-relation 139218. Up to 18343 conditions per place. [2023-08-27 11:33:11,169 INFO L140 encePairwiseOnDemand]: 393/411 looper letters, 593 selfloop transitions, 24 changer transitions 0/625 dead transitions. [2023-08-27 11:33:11,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 625 transitions, 14240 flow [2023-08-27 11:33:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:33:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:33:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2335 transitions. [2023-08-27 11:33:11,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40580465762947515 [2023-08-27 11:33:11,171 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2335 transitions. [2023-08-27 11:33:11,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2335 transitions. [2023-08-27 11:33:11,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:11,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2335 transitions. [2023-08-27 11:33:11,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.78571428571428) internal successors, (2335), 14 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:11,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:11,176 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:11,176 INFO L175 Difference]: Start difference. First operand has 433 places, 547 transitions, 12490 flow. Second operand 14 states and 2335 transitions. [2023-08-27 11:33:11,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 625 transitions, 14240 flow [2023-08-27 11:33:14,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 625 transitions, 14152 flow, removed 34 selfloop flow, removed 7 redundant places. [2023-08-27 11:33:14,973 INFO L231 Difference]: Finished difference. Result has 441 places, 550 transitions, 12550 flow [2023-08-27 11:33:14,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=12402, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12550, PETRI_PLACES=441, PETRI_TRANSITIONS=550} [2023-08-27 11:33:14,973 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 363 predicate places. [2023-08-27 11:33:14,974 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 550 transitions, 12550 flow [2023-08-27 11:33:14,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:14,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:14,974 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:33:14,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-08-27 11:33:14,974 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:33:14,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:14,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1013192294, now seen corresponding path program 1 times [2023-08-27 11:33:14,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:14,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351678020] [2023-08-27 11:33:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:14,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:33:15,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:15,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351678020] [2023-08-27 11:33:15,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351678020] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:33:15,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662029484] [2023-08-27 11:33:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:15,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:33:15,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:33:15,042 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:33:15,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 11:33:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:15,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 11:33:15,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:33:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:33:15,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:33:15,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662029484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:15,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:33:15,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2023-08-27 11:33:15,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298643367] [2023-08-27 11:33:15,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:15,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:33:15,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:15,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:33:15,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-08-27 11:33:15,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:33:15,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 550 transitions, 12550 flow. Second operand has 9 states, 9 states have (on average 160.66666666666666) internal successors, (1446), 9 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:15,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:15,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:33:15,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:20,648 INFO L124 PetriNetUnfolderBase]: 11865/21159 cut-off events. [2023-08-27 11:33:20,648 INFO L125 PetriNetUnfolderBase]: For 671255/671378 co-relation queries the response was YES. [2023-08-27 11:33:20,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145072 conditions, 21159 events. 11865/21159 cut-off events. For 671255/671378 co-relation queries the response was YES. Maximal size of possible extension queue 1051. Compared 178406 event pairs, 1218 based on Foata normal form. 141/21287 useless extension candidates. Maximal degree in co-relation 144745. Up to 6185 conditions per place. [2023-08-27 11:33:20,913 INFO L140 encePairwiseOnDemand]: 393/411 looper letters, 404 selfloop transitions, 389 changer transitions 33/834 dead transitions. [2023-08-27 11:33:20,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 834 transitions, 16805 flow [2023-08-27 11:33:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 11:33:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 11:33:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3591 transitions. [2023-08-27 11:33:20,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41605839416058393 [2023-08-27 11:33:20,915 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3591 transitions. [2023-08-27 11:33:20,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3591 transitions. [2023-08-27 11:33:20,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:20,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3591 transitions. [2023-08-27 11:33:20,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.0) internal successors, (3591), 21 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:20,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 411.0) internal successors, (9042), 22 states have internal predecessors, (9042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:20,921 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 411.0) internal successors, (9042), 22 states have internal predecessors, (9042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:20,921 INFO L175 Difference]: Start difference. First operand has 441 places, 550 transitions, 12550 flow. Second operand 21 states and 3591 transitions. [2023-08-27 11:33:20,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 834 transitions, 16805 flow [2023-08-27 11:33:25,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 834 transitions, 16733 flow, removed 24 selfloop flow, removed 7 redundant places. [2023-08-27 11:33:25,313 INFO L231 Difference]: Finished difference. Result has 458 places, 590 transitions, 14497 flow [2023-08-27 11:33:25,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=12421, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14497, PETRI_PLACES=458, PETRI_TRANSITIONS=590} [2023-08-27 11:33:25,313 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 380 predicate places. [2023-08-27 11:33:25,313 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 590 transitions, 14497 flow [2023-08-27 11:33:25,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 160.66666666666666) internal successors, (1446), 9 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:25,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:25,313 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:33:25,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 11:33:25,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:33:25,514 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:33:25,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:25,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1519809404, now seen corresponding path program 2 times [2023-08-27 11:33:25,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:25,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682308289] [2023-08-27 11:33:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:25,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:33:25,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:25,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682308289] [2023-08-27 11:33:25,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682308289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:25,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:33:25,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:33:25,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616701011] [2023-08-27 11:33:25,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:25,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:33:25,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:25,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:33:25,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:33:25,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:33:25,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 590 transitions, 14497 flow. Second operand has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:25,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:25,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:33:25,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:30,821 INFO L124 PetriNetUnfolderBase]: 11585/20672 cut-off events. [2023-08-27 11:33:30,822 INFO L125 PetriNetUnfolderBase]: For 653895/654087 co-relation queries the response was YES. [2023-08-27 11:33:31,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149025 conditions, 20672 events. 11585/20672 cut-off events. For 653895/654087 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 173757 event pairs, 2259 based on Foata normal form. 57/20707 useless extension candidates. Maximal degree in co-relation 148689. Up to 18694 conditions per place. [2023-08-27 11:33:31,087 INFO L140 encePairwiseOnDemand]: 393/411 looper letters, 625 selfloop transitions, 24 changer transitions 1/658 dead transitions. [2023-08-27 11:33:31,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 658 transitions, 16292 flow [2023-08-27 11:33:31,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:33:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:33:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2330 transitions. [2023-08-27 11:33:31,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40493569690649983 [2023-08-27 11:33:31,089 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2330 transitions. [2023-08-27 11:33:31,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2330 transitions. [2023-08-27 11:33:31,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:31,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2330 transitions. [2023-08-27 11:33:31,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.42857142857142) internal successors, (2330), 14 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:31,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:31,093 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:31,094 INFO L175 Difference]: Start difference. First operand has 458 places, 590 transitions, 14497 flow. Second operand 14 states and 2330 transitions. [2023-08-27 11:33:31,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 658 transitions, 16292 flow [2023-08-27 11:33:36,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 658 transitions, 16076 flow, removed 83 selfloop flow, removed 8 redundant places. [2023-08-27 11:33:36,435 INFO L231 Difference]: Finished difference. Result has 464 places, 593 transitions, 14436 flow [2023-08-27 11:33:36,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=14281, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14436, PETRI_PLACES=464, PETRI_TRANSITIONS=593} [2023-08-27 11:33:36,436 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 386 predicate places. [2023-08-27 11:33:36,436 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 593 transitions, 14436 flow [2023-08-27 11:33:36,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:36,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:36,436 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:33:36,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-08-27 11:33:36,436 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:33:36,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:36,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1854775066, now seen corresponding path program 2 times [2023-08-27 11:33:36,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:36,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612989564] [2023-08-27 11:33:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:36,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:33:36,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:36,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612989564] [2023-08-27 11:33:36,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612989564] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:33:36,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682811575] [2023-08-27 11:33:36,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:33:36,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:33:36,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:33:36,506 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:33:36,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 11:33:36,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 11:33:36,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:33:36,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 11:33:36,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:33:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:33:36,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:33:36,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682811575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:36,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:33:36,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2023-08-27 11:33:36,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263772203] [2023-08-27 11:33:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:36,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:33:36,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:33:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-08-27 11:33:36,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:33:36,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 593 transitions, 14436 flow. Second operand has 9 states, 9 states have (on average 160.77777777777777) internal successors, (1447), 9 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:36,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:36,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:33:36,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:42,367 INFO L124 PetriNetUnfolderBase]: 11936/21296 cut-off events. [2023-08-27 11:33:42,367 INFO L125 PetriNetUnfolderBase]: For 681358/681490 co-relation queries the response was YES. [2023-08-27 11:33:42,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152818 conditions, 21296 events. 11936/21296 cut-off events. For 681358/681490 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 180041 event pairs, 1275 based on Foata normal form. 117/21399 useless extension candidates. Maximal degree in co-relation 152481. Up to 7714 conditions per place. [2023-08-27 11:33:42,645 INFO L140 encePairwiseOnDemand]: 393/411 looper letters, 429 selfloop transitions, 364 changer transitions 22/823 dead transitions. [2023-08-27 11:33:42,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 823 transitions, 17949 flow [2023-08-27 11:33:42,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 11:33:42,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 11:33:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3255 transitions. [2023-08-27 11:33:42,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4168267383787937 [2023-08-27 11:33:42,648 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3255 transitions. [2023-08-27 11:33:42,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3255 transitions. [2023-08-27 11:33:42,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:42,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3255 transitions. [2023-08-27 11:33:42,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 171.31578947368422) internal successors, (3255), 19 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:42,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 411.0) internal successors, (8220), 20 states have internal predecessors, (8220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:42,653 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 411.0) internal successors, (8220), 20 states have internal predecessors, (8220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:42,653 INFO L175 Difference]: Start difference. First operand has 464 places, 593 transitions, 14436 flow. Second operand 19 states and 3255 transitions. [2023-08-27 11:33:42,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 823 transitions, 17949 flow [2023-08-27 11:33:47,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 823 transitions, 17875 flow, removed 19 selfloop flow, removed 9 redundant places. [2023-08-27 11:33:47,868 INFO L231 Difference]: Finished difference. Result has 480 places, 611 transitions, 15887 flow [2023-08-27 11:33:47,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=14362, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=15887, PETRI_PLACES=480, PETRI_TRANSITIONS=611} [2023-08-27 11:33:47,868 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 402 predicate places. [2023-08-27 11:33:47,868 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 611 transitions, 15887 flow [2023-08-27 11:33:47,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 160.77777777777777) internal successors, (1447), 9 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:47,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:47,869 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:33:47,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 11:33:48,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:33:48,069 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:33:48,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1773082532, now seen corresponding path program 2 times [2023-08-27 11:33:48,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:48,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526879733] [2023-08-27 11:33:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:48,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:33:48,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:48,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526879733] [2023-08-27 11:33:48,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526879733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:48,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:33:48,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:33:48,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273193363] [2023-08-27 11:33:48,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:48,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:33:48,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:48,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:33:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:33:48,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:33:48,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 611 transitions, 15887 flow. Second operand has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:48,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:48,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:33:48,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:53,839 INFO L124 PetriNetUnfolderBase]: 11801/21092 cut-off events. [2023-08-27 11:33:53,839 INFO L125 PetriNetUnfolderBase]: For 696579/696759 co-relation queries the response was YES. [2023-08-27 11:33:54,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157567 conditions, 21092 events. 11801/21092 cut-off events. For 696579/696759 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 178498 event pairs, 2295 based on Foata normal form. 51/21121 useless extension candidates. Maximal degree in co-relation 157348. Up to 19104 conditions per place. [2023-08-27 11:33:54,114 INFO L140 encePairwiseOnDemand]: 394/411 looper letters, 643 selfloop transitions, 23 changer transitions 1/675 dead transitions. [2023-08-27 11:33:54,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 675 transitions, 17691 flow [2023-08-27 11:33:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:33:54,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:33:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2011 transitions. [2023-08-27 11:33:54,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077453365774534 [2023-08-27 11:33:54,116 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2011 transitions. [2023-08-27 11:33:54,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2011 transitions. [2023-08-27 11:33:54,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:54,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2011 transitions. [2023-08-27 11:33:54,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 167.58333333333334) internal successors, (2011), 12 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:54,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:54,119 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 411.0) internal successors, (5343), 13 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:54,119 INFO L175 Difference]: Start difference. First operand has 480 places, 611 transitions, 15887 flow. Second operand 12 states and 2011 transitions. [2023-08-27 11:33:54,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 675 transitions, 17691 flow [2023-08-27 11:33:59,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 675 transitions, 17397 flow, removed 34 selfloop flow, removed 10 redundant places. [2023-08-27 11:33:59,915 INFO L231 Difference]: Finished difference. Result has 481 places, 612 transitions, 15695 flow [2023-08-27 11:33:59,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=15593, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15695, PETRI_PLACES=481, PETRI_TRANSITIONS=612} [2023-08-27 11:33:59,916 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 403 predicate places. [2023-08-27 11:33:59,916 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 612 transitions, 15695 flow [2023-08-27 11:33:59,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:59,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:59,916 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:33:59,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2023-08-27 11:33:59,916 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:33:59,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:59,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1534803241, now seen corresponding path program 1 times [2023-08-27 11:33:59,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:59,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593552970] [2023-08-27 11:33:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:59,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:33:59,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:59,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593552970] [2023-08-27 11:33:59,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593552970] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:33:59,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247286126] [2023-08-27 11:33:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:59,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:33:59,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:33:59,979 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:33:59,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 11:34:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:00,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 11:34:00,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:34:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:34:00,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:34:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:34:00,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247286126] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:34:00,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:34:00,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-08-27 11:34:00,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479911947] [2023-08-27 11:34:00,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:34:00,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 11:34:00,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:34:00,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 11:34:00,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-08-27 11:34:00,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:34:00,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 612 transitions, 15695 flow. Second operand has 16 states, 16 states have (on average 161.625) internal successors, (2586), 16 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:00,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:34:00,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:34:00,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:34:07,115 INFO L124 PetriNetUnfolderBase]: 12278/21955 cut-off events. [2023-08-27 11:34:07,116 INFO L125 PetriNetUnfolderBase]: For 738757/738856 co-relation queries the response was YES. [2023-08-27 11:34:07,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161982 conditions, 21955 events. 12278/21955 cut-off events. For 738757/738856 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 186979 event pairs, 739 based on Foata normal form. 177/22125 useless extension candidates. Maximal degree in co-relation 161631. Up to 5824 conditions per place. [2023-08-27 11:34:07,419 INFO L140 encePairwiseOnDemand]: 389/411 looper letters, 531 selfloop transitions, 526 changer transitions 99/1164 dead transitions. [2023-08-27 11:34:07,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1164 transitions, 24186 flow [2023-08-27 11:34:07,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-27 11:34:07,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-27 11:34:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8727 transitions. [2023-08-27 11:34:07,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083380123526109 [2023-08-27 11:34:07,423 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8727 transitions. [2023-08-27 11:34:07,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8727 transitions. [2023-08-27 11:34:07,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:34:07,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8727 transitions. [2023-08-27 11:34:07,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 167.82692307692307) internal successors, (8727), 52 states have internal predecessors, (8727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:07,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 411.0) internal successors, (21783), 53 states have internal predecessors, (21783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:07,438 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 411.0) internal successors, (21783), 53 states have internal predecessors, (21783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:07,439 INFO L175 Difference]: Start difference. First operand has 481 places, 612 transitions, 15695 flow. Second operand 52 states and 8727 transitions. [2023-08-27 11:34:07,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 1164 transitions, 24186 flow [2023-08-27 11:34:13,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 1164 transitions, 23878 flow, removed 53 selfloop flow, removed 22 redundant places. [2023-08-27 11:34:13,960 INFO L231 Difference]: Finished difference. Result has 512 places, 680 transitions, 18925 flow [2023-08-27 11:34:13,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=15303, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=452, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=18925, PETRI_PLACES=512, PETRI_TRANSITIONS=680} [2023-08-27 11:34:13,961 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 434 predicate places. [2023-08-27 11:34:13,961 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 680 transitions, 18925 flow [2023-08-27 11:34:13,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 161.625) internal successors, (2586), 16 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:13,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:34:13,961 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:34:13,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-27 11:34:14,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:34:14,171 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:34:14,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:34:14,171 INFO L85 PathProgramCache]: Analyzing trace with hash 12265080, now seen corresponding path program 1 times [2023-08-27 11:34:14,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:34:14,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833894580] [2023-08-27 11:34:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:34:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:34:14,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:34:14,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833894580] [2023-08-27 11:34:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833894580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:34:14,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:34:14,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 11:34:14,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810223650] [2023-08-27 11:34:14,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:34:14,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:34:14,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:34:14,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:34:14,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:34:14,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:34:14,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 680 transitions, 18925 flow. Second operand has 9 states, 9 states have (on average 160.77777777777777) internal successors, (1447), 9 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:14,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:34:14,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:34:14,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:34:20,399 INFO L124 PetriNetUnfolderBase]: 12120/21856 cut-off events. [2023-08-27 11:34:20,399 INFO L125 PetriNetUnfolderBase]: For 757472/757592 co-relation queries the response was YES. [2023-08-27 11:34:20,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168497 conditions, 21856 events. 12120/21856 cut-off events. For 757472/757592 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 188095 event pairs, 1726 based on Foata normal form. 84/21918 useless extension candidates. Maximal degree in co-relation 168145. Up to 17624 conditions per place. [2023-08-27 11:34:20,710 INFO L140 encePairwiseOnDemand]: 396/411 looper letters, 717 selfloop transitions, 62 changer transitions 25/812 dead transitions. [2023-08-27 11:34:20,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 812 transitions, 21844 flow [2023-08-27 11:34:20,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:34:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:34:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2524 transitions. [2023-08-27 11:34:20,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094079480940795 [2023-08-27 11:34:20,713 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2524 transitions. [2023-08-27 11:34:20,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2524 transitions. [2023-08-27 11:34:20,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:34:20,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2524 transitions. [2023-08-27 11:34:20,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 168.26666666666668) internal successors, (2524), 15 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:20,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 411.0) internal successors, (6576), 16 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:20,718 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 411.0) internal successors, (6576), 16 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:20,718 INFO L175 Difference]: Start difference. First operand has 512 places, 680 transitions, 18925 flow. Second operand 15 states and 2524 transitions. [2023-08-27 11:34:20,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 812 transitions, 21844 flow [2023-08-27 11:34:29,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 812 transitions, 21039 flow, removed 310 selfloop flow, removed 18 redundant places. [2023-08-27 11:34:29,219 INFO L231 Difference]: Finished difference. Result has 510 places, 681 transitions, 18432 flow [2023-08-27 11:34:29,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=18158, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=18432, PETRI_PLACES=510, PETRI_TRANSITIONS=681} [2023-08-27 11:34:29,219 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 432 predicate places. [2023-08-27 11:34:29,220 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 681 transitions, 18432 flow [2023-08-27 11:34:29,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 160.77777777777777) internal successors, (1447), 9 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:29,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:34:29,220 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:34:29,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2023-08-27 11:34:29,220 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:34:29,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:34:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2130790296, now seen corresponding path program 3 times [2023-08-27 11:34:29,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:34:29,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628756832] [2023-08-27 11:34:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:29,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:34:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:34:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:34:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628756832] [2023-08-27 11:34:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628756832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:34:29,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:34:29,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 11:34:29,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594141704] [2023-08-27 11:34:29,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:34:29,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:34:29,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:34:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:34:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:34:29,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:34:29,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 681 transitions, 18432 flow. Second operand has 9 states, 9 states have (on average 160.66666666666666) internal successors, (1446), 9 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:29,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:34:29,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:34:29,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:34:35,539 INFO L124 PetriNetUnfolderBase]: 12463/22433 cut-off events. [2023-08-27 11:34:35,539 INFO L125 PetriNetUnfolderBase]: For 686134/686263 co-relation queries the response was YES. [2023-08-27 11:34:35,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167870 conditions, 22433 events. 12463/22433 cut-off events. For 686134/686263 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 193741 event pairs, 2337 based on Foata normal form. 87/22507 useless extension candidates. Maximal degree in co-relation 167515. Up to 19228 conditions per place. [2023-08-27 11:34:36,046 INFO L140 encePairwiseOnDemand]: 395/411 looper letters, 726 selfloop transitions, 71 changer transitions 9/814 dead transitions. [2023-08-27 11:34:36,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 814 transitions, 21469 flow [2023-08-27 11:34:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:34:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:34:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2358 transitions. [2023-08-27 11:34:36,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4098018769551616 [2023-08-27 11:34:36,048 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2358 transitions. [2023-08-27 11:34:36,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2358 transitions. [2023-08-27 11:34:36,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:34:36,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2358 transitions. [2023-08-27 11:34:36,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.42857142857142) internal successors, (2358), 14 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:36,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:36,052 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:36,052 INFO L175 Difference]: Start difference. First operand has 510 places, 681 transitions, 18432 flow. Second operand 14 states and 2358 transitions. [2023-08-27 11:34:36,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 814 transitions, 21469 flow [2023-08-27 11:34:43,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 814 transitions, 21289 flow, removed 25 selfloop flow, removed 11 redundant places. [2023-08-27 11:34:43,197 INFO L231 Difference]: Finished difference. Result has 516 places, 708 transitions, 19268 flow [2023-08-27 11:34:43,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=18260, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=19268, PETRI_PLACES=516, PETRI_TRANSITIONS=708} [2023-08-27 11:34:43,198 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 438 predicate places. [2023-08-27 11:34:43,198 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 708 transitions, 19268 flow [2023-08-27 11:34:43,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 160.66666666666666) internal successors, (1446), 9 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:43,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:34:43,198 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:34:43,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2023-08-27 11:34:43,198 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:34:43,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:34:43,199 INFO L85 PathProgramCache]: Analyzing trace with hash -164933941, now seen corresponding path program 1 times [2023-08-27 11:34:43,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:34:43,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479437195] [2023-08-27 11:34:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:43,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:34:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:34:43,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:34:43,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479437195] [2023-08-27 11:34:43,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479437195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:34:43,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:34:43,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:34:43,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700139092] [2023-08-27 11:34:43,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:34:43,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:34:43,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:34:43,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:34:43,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:34:43,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:34:43,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 708 transitions, 19268 flow. Second operand has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:43,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:34:43,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:34:43,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:34:49,753 INFO L124 PetriNetUnfolderBase]: 12435/22384 cut-off events. [2023-08-27 11:34:49,753 INFO L125 PetriNetUnfolderBase]: For 665807/665936 co-relation queries the response was YES. [2023-08-27 11:34:49,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168294 conditions, 22384 events. 12435/22384 cut-off events. For 665807/665936 co-relation queries the response was YES. Maximal size of possible extension queue 1191. Compared 193378 event pairs, 2418 based on Foata normal form. 33/22401 useless extension candidates. Maximal degree in co-relation 167935. Up to 20449 conditions per place. [2023-08-27 11:34:50,074 INFO L140 encePairwiseOnDemand]: 395/411 looper letters, 743 selfloop transitions, 22 changer transitions 0/773 dead transitions. [2023-08-27 11:34:50,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 773 transitions, 21239 flow [2023-08-27 11:34:50,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:34:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:34:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2170 transitions. [2023-08-27 11:34:50,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.406138873292158 [2023-08-27 11:34:50,076 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2170 transitions. [2023-08-27 11:34:50,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2170 transitions. [2023-08-27 11:34:50,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:34:50,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2170 transitions. [2023-08-27 11:34:50,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.92307692307693) internal successors, (2170), 13 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:50,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:50,080 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:50,080 INFO L175 Difference]: Start difference. First operand has 516 places, 708 transitions, 19268 flow. Second operand 13 states and 2170 transitions. [2023-08-27 11:34:50,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 773 transitions, 21239 flow [2023-08-27 11:34:57,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 773 transitions, 21120 flow, removed 38 selfloop flow, removed 7 redundant places. [2023-08-27 11:34:57,500 INFO L231 Difference]: Finished difference. Result has 524 places, 712 transitions, 19342 flow [2023-08-27 11:34:57,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=19149, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=19342, PETRI_PLACES=524, PETRI_TRANSITIONS=712} [2023-08-27 11:34:57,500 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 446 predicate places. [2023-08-27 11:34:57,500 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 712 transitions, 19342 flow [2023-08-27 11:34:57,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:57,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:34:57,501 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:34:57,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2023-08-27 11:34:57,501 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:34:57,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:34:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash -423324414, now seen corresponding path program 3 times [2023-08-27 11:34:57,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:34:57,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278244226] [2023-08-27 11:34:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:57,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:34:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:34:57,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:34:57,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278244226] [2023-08-27 11:34:57,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278244226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:34:57,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:34:57,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 11:34:57,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106050703] [2023-08-27 11:34:57,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:34:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:34:57,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:34:57,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:34:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:34:57,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:34:57,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 712 transitions, 19342 flow. Second operand has 9 states, 9 states have (on average 160.66666666666666) internal successors, (1446), 9 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:57,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:34:57,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:34:57,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:35:04,174 INFO L124 PetriNetUnfolderBase]: 12721/22928 cut-off events. [2023-08-27 11:35:04,175 INFO L125 PetriNetUnfolderBase]: For 705373/705502 co-relation queries the response was YES. [2023-08-27 11:35:04,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172763 conditions, 22928 events. 12721/22928 cut-off events. For 705373/705502 co-relation queries the response was YES. Maximal size of possible extension queue 1258. Compared 199124 event pairs, 2322 based on Foata normal form. 81/22993 useless extension candidates. Maximal degree in co-relation 172403. Up to 20157 conditions per place. [2023-08-27 11:35:04,500 INFO L140 encePairwiseOnDemand]: 396/411 looper letters, 752 selfloop transitions, 61 changer transitions 10/831 dead transitions. [2023-08-27 11:35:04,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 831 transitions, 22473 flow [2023-08-27 11:35:04,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:35:04,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:35:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2188 transitions. [2023-08-27 11:35:04,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40950776717200077 [2023-08-27 11:35:04,502 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2188 transitions. [2023-08-27 11:35:04,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2188 transitions. [2023-08-27 11:35:04,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:35:04,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2188 transitions. [2023-08-27 11:35:04,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 168.30769230769232) internal successors, (2188), 13 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:04,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:04,506 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:04,506 INFO L175 Difference]: Start difference. First operand has 524 places, 712 transitions, 19342 flow. Second operand 13 states and 2188 transitions. [2023-08-27 11:35:04,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 831 transitions, 22473 flow [2023-08-27 11:35:12,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 831 transitions, 22394 flow, removed 25 selfloop flow, removed 8 redundant places. [2023-08-27 11:35:12,302 INFO L231 Difference]: Finished difference. Result has 532 places, 737 transitions, 20218 flow [2023-08-27 11:35:12,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=19263, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20218, PETRI_PLACES=532, PETRI_TRANSITIONS=737} [2023-08-27 11:35:12,302 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 454 predicate places. [2023-08-27 11:35:12,302 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 737 transitions, 20218 flow [2023-08-27 11:35:12,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 160.66666666666666) internal successors, (1446), 9 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:12,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:35:12,303 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:35:12,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2023-08-27 11:35:12,303 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:35:12,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:35:12,303 INFO L85 PathProgramCache]: Analyzing trace with hash 929156427, now seen corresponding path program 2 times [2023-08-27 11:35:12,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:35:12,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865339653] [2023-08-27 11:35:12,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:35:12,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:35:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:35:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:35:12,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:35:12,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865339653] [2023-08-27 11:35:12,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865339653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:35:12,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:35:12,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:35:12,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30343952] [2023-08-27 11:35:12,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:35:12,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:35:12,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:35:12,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:35:12,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:35:12,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:35:12,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 737 transitions, 20218 flow. Second operand has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:12,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:35:12,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:35:12,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:35:19,092 INFO L124 PetriNetUnfolderBase]: 12736/22928 cut-off events. [2023-08-27 11:35:19,092 INFO L125 PetriNetUnfolderBase]: For 697075/697204 co-relation queries the response was YES. [2023-08-27 11:35:19,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174144 conditions, 22928 events. 12736/22928 cut-off events. For 697075/697204 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 198895 event pairs, 2451 based on Foata normal form. 33/22945 useless extension candidates. Maximal degree in co-relation 173779. Up to 20986 conditions per place. [2023-08-27 11:35:19,429 INFO L140 encePairwiseOnDemand]: 395/411 looper letters, 766 selfloop transitions, 22 changer transitions 0/796 dead transitions. [2023-08-27 11:35:19,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 796 transitions, 22210 flow [2023-08-27 11:35:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:35:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:35:19,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2165 transitions. [2023-08-27 11:35:19,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052030694366461 [2023-08-27 11:35:19,430 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2165 transitions. [2023-08-27 11:35:19,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2165 transitions. [2023-08-27 11:35:19,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:35:19,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2165 transitions. [2023-08-27 11:35:19,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.53846153846155) internal successors, (2165), 13 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:19,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:19,435 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:19,435 INFO L175 Difference]: Start difference. First operand has 532 places, 737 transitions, 20218 flow. Second operand 13 states and 2165 transitions. [2023-08-27 11:35:19,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 796 transitions, 22210 flow [2023-08-27 11:35:27,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 796 transitions, 22122 flow, removed 25 selfloop flow, removed 6 redundant places. [2023-08-27 11:35:27,494 INFO L231 Difference]: Finished difference. Result has 541 places, 741 transitions, 20331 flow [2023-08-27 11:35:27,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=20130, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20331, PETRI_PLACES=541, PETRI_TRANSITIONS=741} [2023-08-27 11:35:27,494 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 463 predicate places. [2023-08-27 11:35:27,494 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 741 transitions, 20331 flow [2023-08-27 11:35:27,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:27,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:35:27,495 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:35:27,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2023-08-27 11:35:27,495 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:35:27,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:35:27,495 INFO L85 PathProgramCache]: Analyzing trace with hash 715430968, now seen corresponding path program 2 times [2023-08-27 11:35:27,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:35:27,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300186937] [2023-08-27 11:35:27,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:35:27,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:35:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:35:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:35:27,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:35:27,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300186937] [2023-08-27 11:35:27,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300186937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:35:27,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:35:27,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:35:27,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150308265] [2023-08-27 11:35:27,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:35:27,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:35:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:35:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:35:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:35:27,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:35:27,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 741 transitions, 20331 flow. Second operand has 10 states, 10 states have (on average 160.5) internal successors, (1605), 10 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:27,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:35:27,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:35:27,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:35:34,563 INFO L124 PetriNetUnfolderBase]: 12971/23352 cut-off events. [2023-08-27 11:35:34,564 INFO L125 PetriNetUnfolderBase]: For 721452/721581 co-relation queries the response was YES. [2023-08-27 11:35:34,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177145 conditions, 23352 events. 12971/23352 cut-off events. For 721452/721581 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 203381 event pairs, 2427 based on Foata normal form. 69/23405 useless extension candidates. Maximal degree in co-relation 176776. Up to 20515 conditions per place. [2023-08-27 11:35:34,891 INFO L140 encePairwiseOnDemand]: 397/411 looper letters, 774 selfloop transitions, 25 changer transitions 22/829 dead transitions. [2023-08-27 11:35:34,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 829 transitions, 22626 flow [2023-08-27 11:35:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:35:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:35:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2340 transitions. [2023-08-27 11:35:34,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40667361835245047 [2023-08-27 11:35:34,893 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2340 transitions. [2023-08-27 11:35:34,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2340 transitions. [2023-08-27 11:35:34,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:35:34,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2340 transitions. [2023-08-27 11:35:34,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 167.14285714285714) internal successors, (2340), 14 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:34,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:34,897 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 411.0) internal successors, (6165), 15 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:34,897 INFO L175 Difference]: Start difference. First operand has 541 places, 741 transitions, 20331 flow. Second operand 14 states and 2340 transitions. [2023-08-27 11:35:34,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 829 transitions, 22626 flow [2023-08-27 11:35:42,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 829 transitions, 22545 flow, removed 26 selfloop flow, removed 8 redundant places. [2023-08-27 11:35:42,861 INFO L231 Difference]: Finished difference. Result has 548 places, 731 transitions, 20046 flow [2023-08-27 11:35:42,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=20250, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=716, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=20046, PETRI_PLACES=548, PETRI_TRANSITIONS=731} [2023-08-27 11:35:42,861 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 470 predicate places. [2023-08-27 11:35:42,861 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 731 transitions, 20046 flow [2023-08-27 11:35:42,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.5) internal successors, (1605), 10 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:42,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:35:42,862 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:35:42,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2023-08-27 11:35:42,862 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:35:42,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:35:42,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1532666003, now seen corresponding path program 1 times [2023-08-27 11:35:42,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:35:42,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3856660] [2023-08-27 11:35:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:35:42,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:35:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:35:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:35:42,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:35:42,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3856660] [2023-08-27 11:35:42,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3856660] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:35:42,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977256034] [2023-08-27 11:35:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:35:42,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:35:42,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:35:42,957 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:35:42,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 11:35:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:35:43,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 11:35:43,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:35:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:35:43,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:35:43,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:35:43,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977256034] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:35:43,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:35:43,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-08-27 11:35:43,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265902070] [2023-08-27 11:35:43,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:35:43,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 11:35:43,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:35:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 11:35:43,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-08-27 11:35:43,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:35:43,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 731 transitions, 20046 flow. Second operand has 16 states, 16 states have (on average 161.5625) internal successors, (2585), 16 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:43,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:35:43,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:35:43,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:35:50,925 INFO L124 PetriNetUnfolderBase]: 13283/24033 cut-off events. [2023-08-27 11:35:50,926 INFO L125 PetriNetUnfolderBase]: For 750321/750378 co-relation queries the response was YES. [2023-08-27 11:35:51,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180615 conditions, 24033 events. 13283/24033 cut-off events. For 750321/750378 co-relation queries the response was YES. Maximal size of possible extension queue 1339. Compared 211127 event pairs, 868 based on Foata normal form. 183/24203 useless extension candidates. Maximal degree in co-relation 180243. Up to 6445 conditions per place. [2023-08-27 11:35:51,289 INFO L140 encePairwiseOnDemand]: 392/411 looper letters, 546 selfloop transitions, 481 changer transitions 101/1136 dead transitions. [2023-08-27 11:35:51,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 1136 transitions, 26762 flow [2023-08-27 11:35:51,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-27 11:35:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-27 11:35:51,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6716 transitions. [2023-08-27 11:35:51,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40851581508515816 [2023-08-27 11:35:51,293 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6716 transitions. [2023-08-27 11:35:51,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6716 transitions. [2023-08-27 11:35:51,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:35:51,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6716 transitions. [2023-08-27 11:35:51,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 167.9) internal successors, (6716), 40 states have internal predecessors, (6716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:51,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 411.0) internal successors, (16851), 41 states have internal predecessors, (16851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:51,305 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 411.0) internal successors, (16851), 41 states have internal predecessors, (16851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:51,305 INFO L175 Difference]: Start difference. First operand has 548 places, 731 transitions, 20046 flow. Second operand 40 states and 6716 transitions. [2023-08-27 11:35:51,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 1136 transitions, 26762 flow [2023-08-27 11:35:59,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 1136 transitions, 26347 flow, removed 21 selfloop flow, removed 12 redundant places. [2023-08-27 11:35:59,579 INFO L231 Difference]: Finished difference. Result has 572 places, 748 transitions, 21338 flow [2023-08-27 11:35:59,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=19594, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=21338, PETRI_PLACES=572, PETRI_TRANSITIONS=748} [2023-08-27 11:35:59,579 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 494 predicate places. [2023-08-27 11:35:59,579 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 748 transitions, 21338 flow [2023-08-27 11:35:59,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 161.5625) internal successors, (2585), 16 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:59,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:35:59,580 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:35:59,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-27 11:35:59,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:35:59,780 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:35:59,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:35:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1923754928, now seen corresponding path program 4 times [2023-08-27 11:35:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:35:59,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549556076] [2023-08-27 11:35:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:35:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:35:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:35:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:35:59,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:35:59,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549556076] [2023-08-27 11:35:59,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549556076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:35:59,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:35:59,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:35:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710714798] [2023-08-27 11:35:59,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:35:59,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:35:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:35:59,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:35:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:35:59,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:35:59,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 748 transitions, 21338 flow. Second operand has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:59,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:35:59,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:35:59,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:06,656 INFO L124 PetriNetUnfolderBase]: 12582/22786 cut-off events. [2023-08-27 11:36:06,656 INFO L125 PetriNetUnfolderBase]: For 713519/713693 co-relation queries the response was YES. [2023-08-27 11:36:07,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177454 conditions, 22786 events. 12582/22786 cut-off events. For 713519/713693 co-relation queries the response was YES. Maximal size of possible extension queue 1257. Compared 198840 event pairs, 2457 based on Foata normal form. 45/22812 useless extension candidates. Maximal degree in co-relation 177082. Up to 20834 conditions per place. [2023-08-27 11:36:07,224 INFO L140 encePairwiseOnDemand]: 395/411 looper letters, 774 selfloop transitions, 22 changer transitions 2/806 dead transitions. [2023-08-27 11:36:07,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 806 transitions, 23448 flow [2023-08-27 11:36:07,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:36:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:36:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2160 transitions. [2023-08-27 11:36:07,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042672655811342 [2023-08-27 11:36:07,226 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2160 transitions. [2023-08-27 11:36:07,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2160 transitions. [2023-08-27 11:36:07,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:07,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2160 transitions. [2023-08-27 11:36:07,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.15384615384616) internal successors, (2160), 13 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:07,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:07,230 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:07,230 INFO L175 Difference]: Start difference. First operand has 572 places, 748 transitions, 21338 flow. Second operand 13 states and 2160 transitions. [2023-08-27 11:36:07,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 806 transitions, 23448 flow [2023-08-27 11:36:15,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 806 transitions, 22559 flow, removed 101 selfloop flow, removed 31 redundant places. [2023-08-27 11:36:15,507 INFO L231 Difference]: Finished difference. Result has 555 places, 754 transitions, 20735 flow [2023-08-27 11:36:15,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=20459, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20735, PETRI_PLACES=555, PETRI_TRANSITIONS=754} [2023-08-27 11:36:15,507 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 477 predicate places. [2023-08-27 11:36:15,507 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 754 transitions, 20735 flow [2023-08-27 11:36:15,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:15,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:15,508 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:15,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2023-08-27 11:36:15,508 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:36:15,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:15,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1891802134, now seen corresponding path program 5 times [2023-08-27 11:36:15,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:15,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704110779] [2023-08-27 11:36:15,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:15,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:36:15,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:15,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704110779] [2023-08-27 11:36:15,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704110779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:15,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:15,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:36:15,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684384919] [2023-08-27 11:36:15,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:15,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:36:15,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:15,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:36:15,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:36:15,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:36:15,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 754 transitions, 20735 flow. Second operand has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:15,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:15,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:36:15,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:22,299 INFO L124 PetriNetUnfolderBase]: 12568/22784 cut-off events. [2023-08-27 11:36:22,299 INFO L125 PetriNetUnfolderBase]: For 663916/664090 co-relation queries the response was YES. [2023-08-27 11:36:22,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172683 conditions, 22784 events. 12568/22784 cut-off events. For 663916/664090 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 199163 event pairs, 2442 based on Foata normal form. 45/22810 useless extension candidates. Maximal degree in co-relation 172321. Up to 20798 conditions per place. [2023-08-27 11:36:22,634 INFO L140 encePairwiseOnDemand]: 395/411 looper letters, 784 selfloop transitions, 22 changer transitions 0/814 dead transitions. [2023-08-27 11:36:22,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 814 transitions, 22769 flow [2023-08-27 11:36:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:36:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:36:22,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2165 transitions. [2023-08-27 11:36:22,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052030694366461 [2023-08-27 11:36:22,636 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2165 transitions. [2023-08-27 11:36:22,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2165 transitions. [2023-08-27 11:36:22,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:22,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2165 transitions. [2023-08-27 11:36:22,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.53846153846155) internal successors, (2165), 13 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,640 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,640 INFO L175 Difference]: Start difference. First operand has 555 places, 754 transitions, 20735 flow. Second operand 13 states and 2165 transitions. [2023-08-27 11:36:22,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 814 transitions, 22769 flow [2023-08-27 11:36:30,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 814 transitions, 22456 flow, removed 35 selfloop flow, removed 9 redundant places. [2023-08-27 11:36:30,240 INFO L231 Difference]: Finished difference. Result has 561 places, 758 transitions, 20637 flow [2023-08-27 11:36:30,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=20424, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=732, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20637, PETRI_PLACES=561, PETRI_TRANSITIONS=758} [2023-08-27 11:36:30,240 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 483 predicate places. [2023-08-27 11:36:30,240 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 758 transitions, 20637 flow [2023-08-27 11:36:30,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:30,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:30,241 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:30,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2023-08-27 11:36:30,241 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:36:30,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash 556738111, now seen corresponding path program 1 times [2023-08-27 11:36:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:30,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765026953] [2023-08-27 11:36:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:36:30,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:30,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765026953] [2023-08-27 11:36:30,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765026953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:30,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:30,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:36:30,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001739872] [2023-08-27 11:36:30,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:30,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:36:30,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:36:30,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:36:30,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:36:30,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 758 transitions, 20637 flow. Second operand has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:30,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:30,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:36:30,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:37,089 INFO L124 PetriNetUnfolderBase]: 12640/22910 cut-off events. [2023-08-27 11:36:37,089 INFO L125 PetriNetUnfolderBase]: For 654658/654796 co-relation queries the response was YES. [2023-08-27 11:36:37,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172939 conditions, 22910 events. 12640/22910 cut-off events. For 654658/654796 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 200542 event pairs, 2457 based on Foata normal form. 24/22915 useless extension candidates. Maximal degree in co-relation 172577. Up to 20913 conditions per place. [2023-08-27 11:36:37,416 INFO L140 encePairwiseOnDemand]: 395/411 looper letters, 787 selfloop transitions, 22 changer transitions 0/817 dead transitions. [2023-08-27 11:36:37,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 817 transitions, 22674 flow [2023-08-27 11:36:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:36:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:36:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2165 transitions. [2023-08-27 11:36:37,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052030694366461 [2023-08-27 11:36:37,418 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2165 transitions. [2023-08-27 11:36:37,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2165 transitions. [2023-08-27 11:36:37,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:37,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2165 transitions. [2023-08-27 11:36:37,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.53846153846155) internal successors, (2165), 13 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:37,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:37,422 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:37,422 INFO L175 Difference]: Start difference. First operand has 561 places, 758 transitions, 20637 flow. Second operand 13 states and 2165 transitions. [2023-08-27 11:36:37,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 817 transitions, 22674 flow [2023-08-27 11:36:44,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 817 transitions, 22605 flow, removed 21 selfloop flow, removed 7 redundant places. [2023-08-27 11:36:44,713 INFO L231 Difference]: Finished difference. Result has 569 places, 762 transitions, 20774 flow [2023-08-27 11:36:44,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=20568, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=736, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20774, PETRI_PLACES=569, PETRI_TRANSITIONS=762} [2023-08-27 11:36:44,713 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 491 predicate places. [2023-08-27 11:36:44,714 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 762 transitions, 20774 flow [2023-08-27 11:36:44,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:44,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:44,714 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:44,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2023-08-27 11:36:44,714 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:36:44,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:44,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1398315775, now seen corresponding path program 2 times [2023-08-27 11:36:44,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:44,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612309197] [2023-08-27 11:36:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:44,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:36:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:44,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612309197] [2023-08-27 11:36:44,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612309197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:44,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:44,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:36:44,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172318138] [2023-08-27 11:36:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:36:44,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:36:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:36:44,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:36:44,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 762 transitions, 20774 flow. Second operand has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:44,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:44,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:36:44,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:51,572 INFO L124 PetriNetUnfolderBase]: 12712/23033 cut-off events. [2023-08-27 11:36:51,573 INFO L125 PetriNetUnfolderBase]: For 664735/664873 co-relation queries the response was YES. [2023-08-27 11:36:51,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174427 conditions, 23033 events. 12712/23033 cut-off events. For 664735/664873 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 201766 event pairs, 2472 based on Foata normal form. 24/23038 useless extension candidates. Maximal degree in co-relation 174062. Up to 21064 conditions per place. [2023-08-27 11:36:51,920 INFO L140 encePairwiseOnDemand]: 395/411 looper letters, 786 selfloop transitions, 22 changer transitions 1/817 dead transitions. [2023-08-27 11:36:51,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 817 transitions, 22820 flow [2023-08-27 11:36:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:36:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:36:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2163 transitions. [2023-08-27 11:36:51,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40482874789444134 [2023-08-27 11:36:51,922 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2163 transitions. [2023-08-27 11:36:51,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2163 transitions. [2023-08-27 11:36:51,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:51,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2163 transitions. [2023-08-27 11:36:51,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.3846153846154) internal successors, (2163), 13 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:51,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:51,926 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:51,926 INFO L175 Difference]: Start difference. First operand has 569 places, 762 transitions, 20774 flow. Second operand 13 states and 2163 transitions. [2023-08-27 11:36:51,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 817 transitions, 22820 flow [2023-08-27 11:36:59,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 817 transitions, 22741 flow, removed 25 selfloop flow, removed 8 redundant places. [2023-08-27 11:36:59,187 INFO L231 Difference]: Finished difference. Result has 576 places, 766 transitions, 20916 flow [2023-08-27 11:36:59,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=20695, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20916, PETRI_PLACES=576, PETRI_TRANSITIONS=766} [2023-08-27 11:36:59,187 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 498 predicate places. [2023-08-27 11:36:59,188 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 766 transitions, 20916 flow [2023-08-27 11:36:59,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:59,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:59,188 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:59,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2023-08-27 11:36:59,188 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:36:59,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:59,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1795056204, now seen corresponding path program 3 times [2023-08-27 11:36:59,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:59,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751713733] [2023-08-27 11:36:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:59,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:36:59,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:59,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751713733] [2023-08-27 11:36:59,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751713733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:59,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:59,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 11:36:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384599812] [2023-08-27 11:36:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:59,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:36:59,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:59,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:36:59,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:36:59,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:36:59,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 766 transitions, 20916 flow. Second operand has 9 states, 9 states have (on average 160.77777777777777) internal successors, (1447), 9 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:59,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:59,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:36:59,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:06,171 INFO L124 PetriNetUnfolderBase]: 12934/23429 cut-off events. [2023-08-27 11:37:06,171 INFO L125 PetriNetUnfolderBase]: For 695764/695902 co-relation queries the response was YES. [2023-08-27 11:37:06,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178054 conditions, 23429 events. 12934/23429 cut-off events. For 695764/695902 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 205712 event pairs, 2460 based on Foata normal form. 51/23461 useless extension candidates. Maximal degree in co-relation 177686. Up to 20686 conditions per place. [2023-08-27 11:37:06,521 INFO L140 encePairwiseOnDemand]: 396/411 looper letters, 799 selfloop transitions, 48 changer transitions 14/869 dead transitions. [2023-08-27 11:37:06,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 869 transitions, 23685 flow [2023-08-27 11:37:06,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:37:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:37:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2181 transitions. [2023-08-27 11:37:06,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40819764177428414 [2023-08-27 11:37:06,523 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2181 transitions. [2023-08-27 11:37:06,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2181 transitions. [2023-08-27 11:37:06,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:06,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2181 transitions. [2023-08-27 11:37:06,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.76923076923077) internal successors, (2181), 13 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:06,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:06,527 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:06,527 INFO L175 Difference]: Start difference. First operand has 576 places, 766 transitions, 20916 flow. Second operand 13 states and 2181 transitions. [2023-08-27 11:37:06,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 869 transitions, 23685 flow [2023-08-27 11:37:14,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 869 transitions, 23584 flow, removed 36 selfloop flow, removed 8 redundant places. [2023-08-27 11:37:14,194 INFO L231 Difference]: Finished difference. Result has 584 places, 779 transitions, 21293 flow [2023-08-27 11:37:14,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=20815, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=21293, PETRI_PLACES=584, PETRI_TRANSITIONS=779} [2023-08-27 11:37:14,195 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 506 predicate places. [2023-08-27 11:37:14,195 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 779 transitions, 21293 flow [2023-08-27 11:37:14,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 160.77777777777777) internal successors, (1447), 9 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:14,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:14,195 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:14,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2023-08-27 11:37:14,195 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:37:14,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:14,195 INFO L85 PathProgramCache]: Analyzing trace with hash 898763964, now seen corresponding path program 6 times [2023-08-27 11:37:14,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:14,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480011005] [2023-08-27 11:37:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:14,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:14,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:37:14,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:14,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480011005] [2023-08-27 11:37:14,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480011005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:14,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:14,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 11:37:14,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473829521] [2023-08-27 11:37:14,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:14,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:37:14,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:14,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:37:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:37:14,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:37:14,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 779 transitions, 21293 flow. Second operand has 9 states, 9 states have (on average 160.66666666666666) internal successors, (1446), 9 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:14,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:14,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:37:14,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:21,415 INFO L124 PetriNetUnfolderBase]: 12749/23114 cut-off events. [2023-08-27 11:37:21,415 INFO L125 PetriNetUnfolderBase]: For 674211/674343 co-relation queries the response was YES. [2023-08-27 11:37:21,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174597 conditions, 23114 events. 12749/23114 cut-off events. For 674211/674343 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 202652 event pairs, 2370 based on Foata normal form. 75/23170 useless extension candidates. Maximal degree in co-relation 174225. Up to 20292 conditions per place. [2023-08-27 11:37:21,778 INFO L140 encePairwiseOnDemand]: 395/411 looper letters, 752 selfloop transitions, 65 changer transitions 11/836 dead transitions. [2023-08-27 11:37:21,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 836 transitions, 22903 flow [2023-08-27 11:37:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:37:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:37:21,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2180 transitions. [2023-08-27 11:37:21,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080104810031817 [2023-08-27 11:37:21,779 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2180 transitions. [2023-08-27 11:37:21,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2180 transitions. [2023-08-27 11:37:21,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:21,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2180 transitions. [2023-08-27 11:37:21,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.69230769230768) internal successors, (2180), 13 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:21,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:21,783 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:21,783 INFO L175 Difference]: Start difference. First operand has 584 places, 779 transitions, 21293 flow. Second operand 13 states and 2180 transitions. [2023-08-27 11:37:21,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 836 transitions, 22903 flow [2023-08-27 11:37:29,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 836 transitions, 22772 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-08-27 11:37:29,260 INFO L231 Difference]: Finished difference. Result has 591 places, 762 transitions, 20789 flow [2023-08-27 11:37:29,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=20304, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20789, PETRI_PLACES=591, PETRI_TRANSITIONS=762} [2023-08-27 11:37:29,261 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 513 predicate places. [2023-08-27 11:37:29,261 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 762 transitions, 20789 flow [2023-08-27 11:37:29,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 160.66666666666666) internal successors, (1446), 9 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:29,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:29,261 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:29,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2023-08-27 11:37:29,261 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:37:29,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1795913502, now seen corresponding path program 1 times [2023-08-27 11:37:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473003349] [2023-08-27 11:37:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:29,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:37:29,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:29,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473003349] [2023-08-27 11:37:29,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473003349] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:29,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:29,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:37:29,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319349386] [2023-08-27 11:37:29,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:29,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:37:29,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:29,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:37:29,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:37:29,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:37:29,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 762 transitions, 20789 flow. Second operand has 10 states, 10 states have (on average 160.5) internal successors, (1605), 10 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:29,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:29,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:37:29,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:36,452 INFO L124 PetriNetUnfolderBase]: 12859/23303 cut-off events. [2023-08-27 11:37:36,452 INFO L125 PetriNetUnfolderBase]: For 691318/691426 co-relation queries the response was YES. [2023-08-27 11:37:36,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175651 conditions, 23303 events. 12859/23303 cut-off events. For 691318/691426 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 204545 event pairs, 2212 based on Foata normal form. 135/23419 useless extension candidates. Maximal degree in co-relation 175274. Up to 18763 conditions per place. [2023-08-27 11:37:36,845 INFO L140 encePairwiseOnDemand]: 396/411 looper letters, 757 selfloop transitions, 138 changer transitions 23/926 dead transitions. [2023-08-27 11:37:36,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 926 transitions, 24219 flow [2023-08-27 11:37:36,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 11:37:36,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 11:37:36,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3204 transitions. [2023-08-27 11:37:36,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41029581252401076 [2023-08-27 11:37:36,847 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3204 transitions. [2023-08-27 11:37:36,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3204 transitions. [2023-08-27 11:37:36,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:36,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3204 transitions. [2023-08-27 11:37:36,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 168.6315789473684) internal successors, (3204), 19 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:36,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 411.0) internal successors, (8220), 20 states have internal predecessors, (8220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:36,853 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 411.0) internal successors, (8220), 20 states have internal predecessors, (8220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:36,853 INFO L175 Difference]: Start difference. First operand has 591 places, 762 transitions, 20789 flow. Second operand 19 states and 3204 transitions. [2023-08-27 11:37:36,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 926 transitions, 24219 flow [2023-08-27 11:37:44,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 926 transitions, 23783 flow, removed 65 selfloop flow, removed 12 redundant places. [2023-08-27 11:37:44,562 INFO L231 Difference]: Finished difference. Result has 602 places, 770 transitions, 20948 flow [2023-08-27 11:37:44,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=19714, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=20948, PETRI_PLACES=602, PETRI_TRANSITIONS=770} [2023-08-27 11:37:44,563 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 524 predicate places. [2023-08-27 11:37:44,563 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 770 transitions, 20948 flow [2023-08-27 11:37:44,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.5) internal successors, (1605), 10 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:44,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:44,563 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:44,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2023-08-27 11:37:44,563 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:37:44,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:44,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1399158622, now seen corresponding path program 4 times [2023-08-27 11:37:44,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:44,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455669020] [2023-08-27 11:37:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:44,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:37:44,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:44,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455669020] [2023-08-27 11:37:44,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455669020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:44,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:44,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 11:37:44,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912683423] [2023-08-27 11:37:44,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:44,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 11:37:44,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:44,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 11:37:44,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:37:44,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:37:44,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 770 transitions, 20948 flow. Second operand has 9 states, 9 states have (on average 160.66666666666666) internal successors, (1446), 9 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:44,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:44,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:37:44,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:51,640 INFO L124 PetriNetUnfolderBase]: 12624/22920 cut-off events. [2023-08-27 11:37:51,641 INFO L125 PetriNetUnfolderBase]: For 617360/617486 co-relation queries the response was YES. [2023-08-27 11:37:51,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171430 conditions, 22920 events. 12624/22920 cut-off events. For 617360/617486 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 201064 event pairs, 2385 based on Foata normal form. 51/22952 useless extension candidates. Maximal degree in co-relation 171120. Up to 19681 conditions per place. [2023-08-27 11:37:51,999 INFO L140 encePairwiseOnDemand]: 396/411 looper letters, 745 selfloop transitions, 78 changer transitions 11/842 dead transitions. [2023-08-27 11:37:51,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 842 transitions, 22892 flow [2023-08-27 11:37:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:37:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:37:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2189 transitions. [2023-08-27 11:37:52,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40969492794310314 [2023-08-27 11:37:52,001 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2189 transitions. [2023-08-27 11:37:52,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2189 transitions. [2023-08-27 11:37:52,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:52,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2189 transitions. [2023-08-27 11:37:52,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 168.3846153846154) internal successors, (2189), 13 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:52,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:52,005 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:52,005 INFO L175 Difference]: Start difference. First operand has 602 places, 770 transitions, 20948 flow. Second operand 13 states and 2189 transitions. [2023-08-27 11:37:52,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 842 transitions, 22892 flow [2023-08-27 11:37:59,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 842 transitions, 22438 flow, removed 60 selfloop flow, removed 11 redundant places. [2023-08-27 11:37:59,091 INFO L231 Difference]: Finished difference. Result has 595 places, 749 transitions, 20118 flow [2023-08-27 11:37:59,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=19916, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20118, PETRI_PLACES=595, PETRI_TRANSITIONS=749} [2023-08-27 11:37:59,092 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 517 predicate places. [2023-08-27 11:37:59,092 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 749 transitions, 20118 flow [2023-08-27 11:37:59,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 160.66666666666666) internal successors, (1446), 9 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:59,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:59,092 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:59,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2023-08-27 11:37:59,092 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:37:59,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:59,092 INFO L85 PathProgramCache]: Analyzing trace with hash 994370251, now seen corresponding path program 3 times [2023-08-27 11:37:59,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:59,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684662006] [2023-08-27 11:37:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:59,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:37:59,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:59,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684662006] [2023-08-27 11:37:59,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684662006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:59,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:59,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:37:59,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485225420] [2023-08-27 11:37:59,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:59,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:37:59,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:59,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:37:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:37:59,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:37:59,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 749 transitions, 20118 flow. Second operand has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:59,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:59,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:37:59,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:06,009 INFO L124 PetriNetUnfolderBase]: 12488/22700 cut-off events. [2023-08-27 11:38:06,010 INFO L125 PetriNetUnfolderBase]: For 575022/575160 co-relation queries the response was YES. [2023-08-27 11:38:06,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168112 conditions, 22700 events. 12488/22700 cut-off events. For 575022/575160 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 199589 event pairs, 2391 based on Foata normal form. 24/22705 useless extension candidates. Maximal degree in co-relation 167833. Up to 20718 conditions per place. [2023-08-27 11:38:06,349 INFO L140 encePairwiseOnDemand]: 395/411 looper letters, 767 selfloop transitions, 22 changer transitions 0/797 dead transitions. [2023-08-27 11:38:06,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 797 transitions, 22063 flow [2023-08-27 11:38:06,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:38:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:38:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2158 transitions. [2023-08-27 11:38:06,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40389294403892945 [2023-08-27 11:38:06,350 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2158 transitions. [2023-08-27 11:38:06,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2158 transitions. [2023-08-27 11:38:06,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:06,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2158 transitions. [2023-08-27 11:38:06,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:06,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:06,354 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:06,354 INFO L175 Difference]: Start difference. First operand has 595 places, 749 transitions, 20118 flow. Second operand 13 states and 2158 transitions. [2023-08-27 11:38:06,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 797 transitions, 22063 flow [2023-08-27 11:38:12,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 797 transitions, 21807 flow, removed 54 selfloop flow, removed 10 redundant places. [2023-08-27 11:38:12,635 INFO L231 Difference]: Finished difference. Result has 600 places, 753 transitions, 20078 flow [2023-08-27 11:38:12,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=19862, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=727, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20078, PETRI_PLACES=600, PETRI_TRANSITIONS=753} [2023-08-27 11:38:12,635 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 522 predicate places. [2023-08-27 11:38:12,635 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 753 transitions, 20078 flow [2023-08-27 11:38:12,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:12,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:12,635 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:12,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2023-08-27 11:38:12,636 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:38:12,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:12,636 INFO L85 PathProgramCache]: Analyzing trace with hash 741857547, now seen corresponding path program 4 times [2023-08-27 11:38:12,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:12,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385364311] [2023-08-27 11:38:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:12,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:38:12,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:12,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385364311] [2023-08-27 11:38:12,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385364311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:12,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:12,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 11:38:12,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685049127] [2023-08-27 11:38:12,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:12,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:38:12,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:38:12,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:38:12,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:38:12,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 753 transitions, 20078 flow. Second operand has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:12,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:12,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:38:12,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:38:19,364 INFO L124 PetriNetUnfolderBase]: 12439/22600 cut-off events. [2023-08-27 11:38:19,364 INFO L125 PetriNetUnfolderBase]: For 554113/554251 co-relation queries the response was YES. [2023-08-27 11:38:19,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166351 conditions, 22600 events. 12439/22600 cut-off events. For 554113/554251 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 198481 event pairs, 2379 based on Foata normal form. 24/22605 useless extension candidates. Maximal degree in co-relation 166074. Up to 20626 conditions per place. [2023-08-27 11:38:19,717 INFO L140 encePairwiseOnDemand]: 395/411 looper letters, 763 selfloop transitions, 22 changer transitions 2/795 dead transitions. [2023-08-27 11:38:19,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 795 transitions, 21810 flow [2023-08-27 11:38:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:38:19,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:38:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2161 transitions. [2023-08-27 11:38:19,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40445442635223655 [2023-08-27 11:38:19,719 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2161 transitions. [2023-08-27 11:38:19,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2161 transitions. [2023-08-27 11:38:19,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:38:19,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2161 transitions. [2023-08-27 11:38:19,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.23076923076923) internal successors, (2161), 13 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:19,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:19,723 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 411.0) internal successors, (5754), 14 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:19,723 INFO L175 Difference]: Start difference. First operand has 600 places, 753 transitions, 20078 flow. Second operand 13 states and 2161 transitions. [2023-08-27 11:38:19,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 795 transitions, 21810 flow [2023-08-27 11:38:26,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 795 transitions, 21631 flow, removed 41 selfloop flow, removed 12 redundant places. [2023-08-27 11:38:26,082 INFO L231 Difference]: Finished difference. Result has 594 places, 748 transitions, 19792 flow [2023-08-27 11:38:26,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=19673, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=724, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=19792, PETRI_PLACES=594, PETRI_TRANSITIONS=748} [2023-08-27 11:38:26,082 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 516 predicate places. [2023-08-27 11:38:26,082 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 748 transitions, 19792 flow [2023-08-27 11:38:26,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.4) internal successors, (1604), 10 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:26,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:26,083 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:26,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2023-08-27 11:38:26,083 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:38:26,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1735115925, now seen corresponding path program 1 times [2023-08-27 11:38:26,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:26,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813532662] [2023-08-27 11:38:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:26,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:38:26,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:26,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813532662] [2023-08-27 11:38:26,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813532662] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:38:26,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345128376] [2023-08-27 11:38:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:26,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:38:26,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:38:26,149 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:38:26,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 11:38:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:26,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 11:38:26,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:38:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:38:26,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:38:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:38:26,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345128376] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:38:26,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:38:26,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-08-27 11:38:26,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176434506] [2023-08-27 11:38:26,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:38:26,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 11:38:26,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:26,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 11:38:26,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-08-27 11:38:26,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 411 [2023-08-27 11:38:26,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 748 transitions, 19792 flow. Second operand has 16 states, 16 states have (on average 162.125) internal successors, (2594), 16 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:26,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:26,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 411 [2023-08-27 11:38:26,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-27 11:38:27,690 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 11:38:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:38:27,700 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2023-08-27 11:38:27,702 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 11:38:27,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 11:38:27,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2023-08-27 11:38:27,900 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). [2023-08-27 11:38:27,900 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-27 11:38:27,900 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (19 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-27 11:38:27,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-08-27 11:38:27,902 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-27 11:38:27,902 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-27 11:38:27,902 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-27 11:38:27,902 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-27 11:38:27,902 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:38:27,902 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2023-08-27 11:38:27,903 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2023-08-27 11:38:27,903 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:38:27,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:38:27 BasicIcfg [2023-08-27 11:38:27,906 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:38:27,906 INFO L158 Benchmark]: Toolchain (without parser) took 795981.20ms. Allocated memory was 337.6MB in the beginning and 15.9GB in the end (delta: 15.6GB). Free memory was 310.9MB in the beginning and 11.3GB in the end (delta: -10.9GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-08-27 11:38:27,906 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 337.6MB. Free memory is still 315.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:38:27,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.41ms. Allocated memory is still 337.6MB. Free memory was 310.9MB in the beginning and 282.5MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 11:38:27,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.09ms. Allocated memory is still 337.6MB. Free memory was 282.5MB in the beginning and 279.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:38:27,906 INFO L158 Benchmark]: Boogie Preprocessor took 37.35ms. Allocated memory is still 337.6MB. Free memory was 279.8MB in the beginning and 278.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:38:27,907 INFO L158 Benchmark]: RCFGBuilder took 347.59ms. Allocated memory is still 337.6MB. Free memory was 278.3MB in the beginning and 260.9MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 11:38:27,907 INFO L158 Benchmark]: TraceAbstraction took 795054.75ms. Allocated memory was 337.6MB in the beginning and 15.9GB in the end (delta: 15.6GB). Free memory was 260.2MB in the beginning and 11.3GB in the end (delta: -11.0GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-08-27 11:38:27,907 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 337.6MB. Free memory is still 315.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 481.41ms. Allocated memory is still 337.6MB. Free memory was 310.9MB in the beginning and 282.5MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.09ms. Allocated memory is still 337.6MB. Free memory was 282.5MB in the beginning and 279.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.35ms. Allocated memory is still 337.6MB. Free memory was 279.8MB in the beginning and 278.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 347.59ms. Allocated memory is still 337.6MB. Free memory was 278.3MB in the beginning and 260.9MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 795054.75ms. Allocated memory was 337.6MB in the beginning and 15.9GB in the end (delta: 15.6GB). Free memory was 260.2MB in the beginning and 11.3GB in the end (delta: -11.0GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 119]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [119] - GenericResultAtLocation [Line: 481]: Unsoundness Warning unspecified type, defaulting to int C: short [481] - GenericResultAtLocation [Line: 481]: Unsoundness Warning unspecified type, defaulting to int C: short [481] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 132 PlacesBefore, 38 PlacesAfterwards, 144 TransitionsBefore, 45 TransitionsAfterwards, 4464 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 5 ChoiceCompositions, 144 TotalNumberOfCompositions, 6988 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4726, independent: 4606, independent conditional: 0, independent unconditional: 4606, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2589, independent: 2554, independent conditional: 0, independent unconditional: 2554, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4726, independent: 2052, independent conditional: 0, independent unconditional: 2052, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 2589, unknown conditional: 0, unknown unconditional: 2589] , Statistics on independence cache: Total cache size (in pairs): 119, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 126 PlacesBefore, 35 PlacesAfterwards, 138 TransitionsBefore, 42 TransitionsAfterwards, 4464 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 5 ChoiceCompositions, 140 TotalNumberOfCompositions, 7315 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4688, independent: 4546, independent conditional: 0, independent unconditional: 4546, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2582, independent: 2545, independent conditional: 0, independent unconditional: 2545, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4688, independent: 2001, independent conditional: 0, independent unconditional: 2001, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 2582, unknown conditional: 0, unknown unconditional: 2582] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 167 PlacesBefore, 60 PlacesAfterwards, 185 TransitionsBefore, 73 TransitionsAfterwards, 12888 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 95 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 5 ChoiceCompositions, 162 TotalNumberOfCompositions, 29922 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14734, independent: 14392, independent conditional: 0, independent unconditional: 14392, dependent: 342, dependent conditional: 0, dependent unconditional: 342, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7193, independent: 7117, independent conditional: 0, independent unconditional: 7117, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14734, independent: 7275, independent conditional: 0, independent unconditional: 7275, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 7193, unknown conditional: 0, unknown unconditional: 7193] , Statistics on independence cache: Total cache size (in pairs): 539, Positive cache size: 502, Positive conditional cache size: 0, Positive unconditional cache size: 502, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 167 PlacesBefore, 60 PlacesAfterwards, 185 TransitionsBefore, 73 TransitionsAfterwards, 12888 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 95 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 5 ChoiceCompositions, 162 TotalNumberOfCompositions, 30068 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12942, independent: 12602, independent conditional: 0, independent unconditional: 12602, dependent: 340, dependent conditional: 0, dependent unconditional: 340, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6985, independent: 6912, independent conditional: 0, independent unconditional: 6912, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12942, independent: 5690, independent conditional: 0, independent unconditional: 5690, dependent: 267, dependent conditional: 0, dependent unconditional: 267, unknown: 6985, unknown conditional: 0, unknown unconditional: 6985] , Statistics on independence cache: Total cache size (in pairs): 297, Positive cache size: 263, Positive conditional cache size: 0, Positive unconditional cache size: 263, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 200 PlacesBefore, 78 PlacesAfterwards, 223 TransitionsBefore, 96 TransitionsAfterwards, 23544 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 119 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 5 ChoiceCompositions, 188 TotalNumberOfCompositions, 57523 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22117, independent: 21648, independent conditional: 0, independent unconditional: 21648, dependent: 469, dependent conditional: 0, dependent unconditional: 469, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12079, independent: 11993, independent conditional: 0, independent unconditional: 11993, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 22117, independent: 9655, independent conditional: 0, independent unconditional: 9655, dependent: 383, dependent conditional: 0, dependent unconditional: 383, unknown: 12079, unknown conditional: 0, unknown unconditional: 12079] , Statistics on independence cache: Total cache size (in pairs): 426, Positive cache size: 378, Positive conditional cache size: 0, Positive unconditional cache size: 378, Negative cache size: 48, Negative conditional cache size: 0, Negative unconditional cache size: 48, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 939]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). - TimeoutResultAtElement [Line: 939]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). - TimeoutResultAtElement [Line: 949]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). - TimeoutResultAtElement [Line: 927]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). - TimeoutResultAtElement [Line: 945]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). - TimeoutResultAtElement [Line: 952]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). - TimeoutResultAtElement [Line: 939]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). - TimeoutResultAtElement [Line: 939]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). - TimeoutResultAtElement [Line: 949]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). - TimeoutResultAtElement [Line: 952]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). - TimeoutResultAtElement [Line: 945]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 158/411 universal loopers) in iteration 83,while PetriNetUnfolder was constructing finite prefix that currently has 23319 conditions, 3735 events (1850/3734 cut-off events. For 77305/77325 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 31394 event pairs, 328 based on Foata normal form. 2/4311 useless extension candidates. Maximal degree in co-relation 23151. Up to 1934 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 163 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 90 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 143 IncrementalHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 0 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 194 locations, 20 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.4s, OverallIterations: 29, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2068 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2068 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 147 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7376 IncrementalHoareTripleChecker+Invalid, 7523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 147 mSolverCounterUnsat, 0 mSDtfsCounter, 7376 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=994occurred in iteration=12, InterpolantAutomatonStates: 295, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 554 NumberOfCodeBlocks, 554 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 529 ConstructedInterpolants, 0 QuantifiedInterpolants, 1587 SizeOfPredicates, 0 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 31 InterpolantComputations, 28 PerfectInterpolantSequences, 50/53 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 225 locations, 24 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 772.6s, OverallIterations: 83, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 758.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9141 SdHoareTripleChecker+Valid, 17.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9141 mSDsluCounter, 291 SdHoareTripleChecker+Invalid, 14.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 200 mSDsCounter, 978 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46738 IncrementalHoareTripleChecker+Invalid, 47716 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 978 mSolverCounterUnsat, 91 mSDtfsCounter, 46738 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1953 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 1161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3895 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21338occurred in iteration=72, InterpolantAutomatonStates: 1106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2797 NumberOfCodeBlocks, 2773 NumberOfCodeBlocksAsserted, 101 NumberOfCheckSat, 2979 ConstructedInterpolants, 0 QuantifiedInterpolants, 9131 SizeOfPredicates, 79 NumberOfNonLiveVariables, 3872 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 111 InterpolantComputations, 73 PerfectInterpolantSequences, 645/719 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 163 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 194 locations, 20 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown