/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 INSUFFICIENT_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/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 04:53:25,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 04:53:25,438 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 04:53:25,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 04:53:25,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 04:53:25,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 04:53:25,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 04:53:25,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 04:53:25,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 04:53:25,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 04:53:25,486 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 04:53:25,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 04:53:25,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 04:53:25,488 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 04:53:25,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 04:53:25,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 04:53:25,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 04:53:25,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 04:53:25,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 04:53:25,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 04:53:25,489 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 04:53:25,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 04:53:25,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 04:53:25,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 04:53:25,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 04:53:25,491 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 04:53:25,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 04:53:25,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:53:25,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 04:53:25,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 04:53:25,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 04:53:25,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 04:53:25,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 04:53:25,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 04:53:25,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 04:53:25,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 04:53:25,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 04:53:25,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 04:53:25,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 04:53:25,881 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 04:53:25,882 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 04:53:25,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-27 04:53:27,141 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 04:53:27,427 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 04:53:27,427 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-27 04:53:27,441 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ffaf8fe/827cacd9648b4e2e808eee3df0d28bb1/FLAGcc700adc0 [2023-08-27 04:53:27,455 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ffaf8fe/827cacd9648b4e2e808eee3df0d28bb1 [2023-08-27 04:53:27,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 04:53:27,458 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 04:53:27,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 04:53:27,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 04:53:27,462 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 04:53:27,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:27,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad2c95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27, skipping insertion in model container [2023-08-27 04:53:27,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:27,509 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 04:53:27,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:53:27,891 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 04:53:27,920 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-27 04:53:27,922 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-27 04:53:27,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:53:27,973 INFO L206 MainTranslator]: Completed translation [2023-08-27 04:53:27,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27 WrapperNode [2023-08-27 04:53:27,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 04:53:27,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 04:53:27,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 04:53:27,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 04:53:27,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:28,009 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:28,039 INFO L138 Inliner]: procedures = 165, calls = 36, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 131 [2023-08-27 04:53:28,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 04:53:28,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 04:53:28,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 04:53:28,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 04:53:28,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:28,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:28,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:28,063 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:28,068 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:28,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:28,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:28,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:28,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 04:53:28,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 04:53:28,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 04:53:28,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 04:53:28,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (1/1) ... [2023-08-27 04:53:28,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:53:28,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:28,126 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 04:53:28,151 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 04:53:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 04:53:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-27 04:53:28,165 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-27 04:53:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 04:53:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 04:53:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 04:53:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 04:53:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 04:53:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 04:53:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 04:53:28,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 04:53:28,168 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 04:53:28,310 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 04:53:28,312 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 04:53:28,499 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 04:53:28,506 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 04:53:28,506 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 04:53:28,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:53:28 BoogieIcfgContainer [2023-08-27 04:53:28,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 04:53:28,510 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 04:53:28,510 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 04:53:28,513 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 04:53:28,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:53:27" (1/3) ... [2023-08-27 04:53:28,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44942863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:53:28, skipping insertion in model container [2023-08-27 04:53:28,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:53:27" (2/3) ... [2023-08-27 04:53:28,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44942863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:53:28, skipping insertion in model container [2023-08-27 04:53:28,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:53:28" (3/3) ... [2023-08-27 04:53:28,515 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-27 04:53:28,531 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 04:53:28,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-27 04:53:28,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 04:53:28,608 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 04:53:28,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 149 transitions, 303 flow [2023-08-27 04:53:28,727 INFO L124 PetriNetUnfolderBase]: 12/148 cut-off events. [2023-08-27 04:53:28,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:53:28,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 148 events. 12/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 322 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-27 04:53:28,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 149 transitions, 303 flow [2023-08-27 04:53:28,743 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 148 transitions, 299 flow [2023-08-27 04:53:28,748 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:53:28,761 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 148 transitions, 299 flow [2023-08-27 04:53:28,767 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 148 transitions, 299 flow [2023-08-27 04:53:28,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 148 transitions, 299 flow [2023-08-27 04:53:28,823 INFO L124 PetriNetUnfolderBase]: 12/148 cut-off events. [2023-08-27 04:53:28,823 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:53:28,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 148 events. 12/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 322 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-27 04:53:28,830 INFO L119 LiptonReduction]: Number of co-enabled transitions 5984 [2023-08-27 04:53:32,846 INFO L134 LiptonReduction]: Checked pairs total: 8283 [2023-08-27 04:53:32,847 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-08-27 04:53:32,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 04:53:32,864 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;@37708143, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:53:32,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-27 04:53:32,869 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:53:32,869 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-08-27 04:53:32,869 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:53:32,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:32,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 04:53:32,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:32,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:32,875 INFO L85 PathProgramCache]: Analyzing trace with hash 571140581, now seen corresponding path program 1 times [2023-08-27 04:53:32,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:32,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034863933] [2023-08-27 04:53:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:32,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:33,631 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 04:53:33,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:33,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034863933] [2023-08-27 04:53:33,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034863933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:53:33,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:53:33,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:53:33,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892945839] [2023-08-27 04:53:33,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:33,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:53:33,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:33,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:53:33,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:53:33,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 301 [2023-08-27 04:53:33,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 34 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:33,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:33,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 301 [2023-08-27 04:53:33,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:33,889 INFO L124 PetriNetUnfolderBase]: 227/420 cut-off events. [2023-08-27 04:53:33,889 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:53:33,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 420 events. 227/420 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1591 event pairs, 110 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 831. Up to 348 conditions per place. [2023-08-27 04:53:33,897 INFO L140 encePairwiseOnDemand]: 294/301 looper letters, 50 selfloop transitions, 4 changer transitions 2/58 dead transitions. [2023-08-27 04:53:33,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 58 transitions, 231 flow [2023-08-27 04:53:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:53:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:53:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 498 transitions. [2023-08-27 04:53:33,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41362126245847175 [2023-08-27 04:53:33,920 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 498 transitions. [2023-08-27 04:53:33,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 498 transitions. [2023-08-27 04:53:33,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:33,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 498 transitions. [2023-08-27 04:53:33,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:33,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:33,941 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:33,943 INFO L175 Difference]: Start difference. First operand has 32 places, 34 transitions, 71 flow. Second operand 4 states and 498 transitions. [2023-08-27 04:53:33,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 58 transitions, 231 flow [2023-08-27 04:53:33,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 58 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:53:33,948 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 93 flow [2023-08-27 04:53:33,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2023-08-27 04:53:33,956 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-27 04:53:33,956 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 93 flow [2023-08-27 04:53:33,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:33,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:33,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 04:53:33,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 04:53:33,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:33,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash 575520558, now seen corresponding path program 1 times [2023-08-27 04:53:33,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:33,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805172165] [2023-08-27 04:53:33,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:33,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:34,022 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 04:53:34,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:34,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805172165] [2023-08-27 04:53:34,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805172165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:53:34,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:53:34,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:53:34,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138986421] [2023-08-27 04:53:34,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:34,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:53:34,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:34,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:53:34,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:53:34,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 301 [2023-08-27 04:53:34,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:34,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 301 [2023-08-27 04:53:34,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:34,157 INFO L124 PetriNetUnfolderBase]: 268/498 cut-off events. [2023-08-27 04:53:34,157 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-08-27 04:53:34,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 498 events. 268/498 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1836 event pairs, 97 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 1090. Up to 374 conditions per place. [2023-08-27 04:53:34,160 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 46 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-08-27 04:53:34,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 247 flow [2023-08-27 04:53:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:53:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:53:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-08-27 04:53:34,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363233665559247 [2023-08-27 04:53:34,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-08-27 04:53:34,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-08-27 04:53:34,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:34,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-08-27 04:53:34,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,168 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 93 flow. Second operand 3 states and 394 transitions. [2023-08-27 04:53:34,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 247 flow [2023-08-27 04:53:34,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 247 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 04:53:34,171 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 133 flow [2023-08-27 04:53:34,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-08-27 04:53:34,172 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-08-27 04:53:34,172 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 133 flow [2023-08-27 04:53:34,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:34,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 04:53:34,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 04:53:34,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:34,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:34,179 INFO L85 PathProgramCache]: Analyzing trace with hash 575520557, now seen corresponding path program 1 times [2023-08-27 04:53:34,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:34,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103281653] [2023-08-27 04:53:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:34,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:34,366 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 04:53:34,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:34,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103281653] [2023-08-27 04:53:34,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103281653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:53:34,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:53:34,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:53:34,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888155207] [2023-08-27 04:53:34,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:34,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:53:34,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:34,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:53:34,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:53:34,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 301 [2023-08-27 04:53:34,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:34,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 301 [2023-08-27 04:53:34,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:34,495 INFO L124 PetriNetUnfolderBase]: 253/468 cut-off events. [2023-08-27 04:53:34,495 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-08-27 04:53:34,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190 conditions, 468 events. 253/468 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1644 event pairs, 125 based on Foata normal form. 6/386 useless extension candidates. Maximal degree in co-relation 1176. Up to 430 conditions per place. [2023-08-27 04:53:34,499 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 40 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2023-08-27 04:53:34,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 249 flow [2023-08-27 04:53:34,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:53:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:53:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 483 transitions. [2023-08-27 04:53:34,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4011627906976744 [2023-08-27 04:53:34,502 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 483 transitions. [2023-08-27 04:53:34,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 483 transitions. [2023-08-27 04:53:34,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:34,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 483 transitions. [2023-08-27 04:53:34,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,507 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,507 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 133 flow. Second operand 4 states and 483 transitions. [2023-08-27 04:53:34,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 249 flow [2023-08-27 04:53:34,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:53:34,511 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 142 flow [2023-08-27 04:53:34,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-27 04:53:34,513 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-08-27 04:53:34,515 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 142 flow [2023-08-27 04:53:34,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:34,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:34,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 04:53:34,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:34,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:34,518 INFO L85 PathProgramCache]: Analyzing trace with hash -177309611, now seen corresponding path program 1 times [2023-08-27 04:53:34,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:34,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429571364] [2023-08-27 04:53:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:34,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:34,577 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 04:53:34,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:34,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429571364] [2023-08-27 04:53:34,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429571364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:53:34,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:53:34,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:53:34,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917151407] [2023-08-27 04:53:34,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:34,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:53:34,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:34,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:53:34,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:53:34,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-27 04:53:34,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:34,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-27 04:53:34,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:34,718 INFO L124 PetriNetUnfolderBase]: 301/555 cut-off events. [2023-08-27 04:53:34,719 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-08-27 04:53:34,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 555 events. 301/555 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2258 event pairs, 52 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 1372. Up to 482 conditions per place. [2023-08-27 04:53:34,722 INFO L140 encePairwiseOnDemand]: 295/301 looper letters, 70 selfloop transitions, 3 changer transitions 1/75 dead transitions. [2023-08-27 04:53:34,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 75 transitions, 384 flow [2023-08-27 04:53:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:53:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:53:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 574 transitions. [2023-08-27 04:53:34,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2023-08-27 04:53:34,725 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 574 transitions. [2023-08-27 04:53:34,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 574 transitions. [2023-08-27 04:53:34,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:34,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 574 transitions. [2023-08-27 04:53:34,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,730 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,730 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 142 flow. Second operand 4 states and 574 transitions. [2023-08-27 04:53:34,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 75 transitions, 384 flow [2023-08-27 04:53:34,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 75 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:53:34,733 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 163 flow [2023-08-27 04:53:34,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=4, PETRI_FLOW=163, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-27 04:53:34,734 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2023-08-27 04:53:34,734 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 163 flow [2023-08-27 04:53:34,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:34,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:34,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 04:53:34,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:34,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:34,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1905790980, now seen corresponding path program 1 times [2023-08-27 04:53:34,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:34,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665434242] [2023-08-27 04:53:34,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:34,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:34,911 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 04:53:34,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:34,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665434242] [2023-08-27 04:53:34,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665434242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:53:34,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:53:34,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:53:34,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445301073] [2023-08-27 04:53:34,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:34,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:53:34,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:34,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:53:34,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:53:34,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 301 [2023-08-27 04:53:34,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:34,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:34,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 301 [2023-08-27 04:53:34,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:35,069 INFO L124 PetriNetUnfolderBase]: 387/731 cut-off events. [2023-08-27 04:53:35,069 INFO L125 PetriNetUnfolderBase]: For 396/397 co-relation queries the response was YES. [2023-08-27 04:53:35,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 731 events. 387/731 cut-off events. For 396/397 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3193 event pairs, 69 based on Foata normal form. 16/626 useless extension candidates. Maximal degree in co-relation 1956. Up to 528 conditions per place. [2023-08-27 04:53:35,074 INFO L140 encePairwiseOnDemand]: 295/301 looper letters, 58 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2023-08-27 04:53:35,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 67 transitions, 379 flow [2023-08-27 04:53:35,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:53:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:53:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-27 04:53:35,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440753045404208 [2023-08-27 04:53:35,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-27 04:53:35,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-27 04:53:35,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:35,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-27 04:53:35,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,081 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 163 flow. Second operand 3 states and 401 transitions. [2023-08-27 04:53:35,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 67 transitions, 379 flow [2023-08-27 04:53:35,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:53:35,085 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 212 flow [2023-08-27 04:53:35,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-08-27 04:53:35,085 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2023-08-27 04:53:35,086 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 212 flow [2023-08-27 04:53:35,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:35,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:35,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 04:53:35,086 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:35,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:35,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1712181160, now seen corresponding path program 2 times [2023-08-27 04:53:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:35,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203014525] [2023-08-27 04:53:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:35,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:35,264 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 04:53:35,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:35,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203014525] [2023-08-27 04:53:35,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203014525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:53:35,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:53:35,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:53:35,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805107605] [2023-08-27 04:53:35,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:35,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:53:35,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:53:35,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:53:35,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 301 [2023-08-27 04:53:35,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:35,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 301 [2023-08-27 04:53:35,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:35,328 INFO L124 PetriNetUnfolderBase]: 75/171 cut-off events. [2023-08-27 04:53:35,328 INFO L125 PetriNetUnfolderBase]: For 177/189 co-relation queries the response was YES. [2023-08-27 04:53:35,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 171 events. 75/171 cut-off events. For 177/189 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 563 event pairs, 4 based on Foata normal form. 14/150 useless extension candidates. Maximal degree in co-relation 485. Up to 126 conditions per place. [2023-08-27 04:53:35,330 INFO L140 encePairwiseOnDemand]: 297/301 looper letters, 34 selfloop transitions, 3 changer transitions 2/41 dead transitions. [2023-08-27 04:53:35,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 255 flow [2023-08-27 04:53:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:53:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:53:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-08-27 04:53:35,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130675526024363 [2023-08-27 04:53:35,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-08-27 04:53:35,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-08-27 04:53:35,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:35,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-08-27 04:53:35,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,336 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 212 flow. Second operand 3 states and 373 transitions. [2023-08-27 04:53:35,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 255 flow [2023-08-27 04:53:35,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 231 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 04:53:35,338 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 138 flow [2023-08-27 04:53:35,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-08-27 04:53:35,341 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2023-08-27 04:53:35,341 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 138 flow [2023-08-27 04:53:35,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:35,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:35,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 04:53:35,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:35,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash 582650950, now seen corresponding path program 1 times [2023-08-27 04:53:35,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307514797] [2023-08-27 04:53:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:35,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:35,728 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 04:53:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:35,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307514797] [2023-08-27 04:53:35,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307514797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:53:35,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:53:35,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 04:53:35,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432887511] [2023-08-27 04:53:35,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:35,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 04:53:35,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 04:53:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 04:53:35,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 301 [2023-08-27 04:53:35,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 138 flow. Second operand has 8 states, 8 states have (on average 100.375) internal successors, (803), 8 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:35,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 301 [2023-08-27 04:53:35,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:35,877 INFO L124 PetriNetUnfolderBase]: 85/200 cut-off events. [2023-08-27 04:53:35,878 INFO L125 PetriNetUnfolderBase]: For 149/161 co-relation queries the response was YES. [2023-08-27 04:53:35,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 200 events. 85/200 cut-off events. For 149/161 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 684 event pairs, 34 based on Foata normal form. 5/168 useless extension candidates. Maximal degree in co-relation 562. Up to 155 conditions per place. [2023-08-27 04:53:35,879 INFO L140 encePairwiseOnDemand]: 289/301 looper letters, 43 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2023-08-27 04:53:35,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 296 flow [2023-08-27 04:53:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 04:53:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 04:53:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 748 transitions. [2023-08-27 04:53:35,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35500711912672045 [2023-08-27 04:53:35,883 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 748 transitions. [2023-08-27 04:53:35,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 748 transitions. [2023-08-27 04:53:35,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:35,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 748 transitions. [2023-08-27 04:53:35,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 301.0) internal successors, (2408), 8 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,888 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 301.0) internal successors, (2408), 8 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,888 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 138 flow. Second operand 7 states and 748 transitions. [2023-08-27 04:53:35,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 296 flow [2023-08-27 04:53:35,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 278 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 04:53:35,892 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 180 flow [2023-08-27 04:53:35,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=180, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-08-27 04:53:35,894 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2023-08-27 04:53:35,894 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 180 flow [2023-08-27 04:53:35,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 100.375) internal successors, (803), 8 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:35,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:35,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 04:53:35,895 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:35,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash 882307724, now seen corresponding path program 1 times [2023-08-27 04:53:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:35,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161807321] [2023-08-27 04:53:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:35,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:35,959 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 04:53:35,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:35,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161807321] [2023-08-27 04:53:35,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161807321] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:53:35,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:53:35,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:53:35,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093332920] [2023-08-27 04:53:35,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:35,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:53:35,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:53:35,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:53:35,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 301 [2023-08-27 04:53:35,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:35,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:35,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 301 [2023-08-27 04:53:35,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:36,077 INFO L124 PetriNetUnfolderBase]: 102/231 cut-off events. [2023-08-27 04:53:36,077 INFO L125 PetriNetUnfolderBase]: For 204/219 co-relation queries the response was YES. [2023-08-27 04:53:36,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 231 events. 102/231 cut-off events. For 204/219 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 817 event pairs, 8 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 685. Up to 97 conditions per place. [2023-08-27 04:53:36,079 INFO L140 encePairwiseOnDemand]: 293/301 looper letters, 60 selfloop transitions, 10 changer transitions 0/72 dead transitions. [2023-08-27 04:53:36,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 469 flow [2023-08-27 04:53:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 04:53:36,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 04:53:36,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 610 transitions. [2023-08-27 04:53:36,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053156146179402 [2023-08-27 04:53:36,082 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 610 transitions. [2023-08-27 04:53:36,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 610 transitions. [2023-08-27 04:53:36,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:36,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 610 transitions. [2023-08-27 04:53:36,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:36,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:36,086 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:36,086 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 180 flow. Second operand 5 states and 610 transitions. [2023-08-27 04:53:36,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 469 flow [2023-08-27 04:53:36,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 458 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 04:53:36,089 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 231 flow [2023-08-27 04:53:36,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-08-27 04:53:36,090 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-08-27 04:53:36,090 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 231 flow [2023-08-27 04:53:36,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:36,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:36,090 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 04:53:36,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 04:53:36,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:36,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash 873519923, now seen corresponding path program 1 times [2023-08-27 04:53:36,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:36,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118924570] [2023-08-27 04:53:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:36,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:36,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:36,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118924570] [2023-08-27 04:53:36,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118924570] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:36,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454873404] [2023-08-27 04:53:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:36,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:36,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:36,197 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 04:53:36,201 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 04:53:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:36,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 04:53:36,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:53:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:36,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:53:36,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454873404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:53:36,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 04:53:36,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-27 04:53:36,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524832199] [2023-08-27 04:53:36,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:36,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:53:36,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:36,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:53:36,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-27 04:53:36,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-27 04:53:36,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 128.5) internal successors, (771), 6 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:36,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:36,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-27 04:53:36,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:36,569 INFO L124 PetriNetUnfolderBase]: 102/229 cut-off events. [2023-08-27 04:53:36,569 INFO L125 PetriNetUnfolderBase]: For 327/327 co-relation queries the response was YES. [2023-08-27 04:53:36,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 229 events. 102/229 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 856 event pairs, 15 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 775. Up to 85 conditions per place. [2023-08-27 04:53:36,572 INFO L140 encePairwiseOnDemand]: 295/301 looper letters, 95 selfloop transitions, 7 changer transitions 0/103 dead transitions. [2023-08-27 04:53:36,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 103 transitions, 745 flow [2023-08-27 04:53:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 04:53:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 04:53:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 833 transitions. [2023-08-27 04:53:36,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2023-08-27 04:53:36,575 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 833 transitions. [2023-08-27 04:53:36,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 833 transitions. [2023-08-27 04:53:36,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:36,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 833 transitions. [2023-08-27 04:53:36,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.83333333333334) internal successors, (833), 6 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:36,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 301.0) internal successors, (2107), 7 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:36,582 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 301.0) internal successors, (2107), 7 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:36,582 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 231 flow. Second operand 6 states and 833 transitions. [2023-08-27 04:53:36,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 103 transitions, 745 flow [2023-08-27 04:53:36,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 103 transitions, 735 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-27 04:53:36,587 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 237 flow [2023-08-27 04:53:36,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-08-27 04:53:36,588 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2023-08-27 04:53:36,588 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 237 flow [2023-08-27 04:53:36,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.5) internal successors, (771), 6 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:36,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:36,589 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 04:53:36,601 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 04:53:36,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:36,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:36,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:36,796 INFO L85 PathProgramCache]: Analyzing trace with hash 873520124, now seen corresponding path program 1 times [2023-08-27 04:53:36,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:36,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068746387] [2023-08-27 04:53:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:36,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:36,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:36,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068746387] [2023-08-27 04:53:36,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068746387] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:36,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153369400] [2023-08-27 04:53:36,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:36,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:36,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:36,868 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 04:53:36,871 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 04:53:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:36,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 04:53:36,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:53:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:36,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:53:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:37,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153369400] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:53:37,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:53:37,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 04:53:37,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437682195] [2023-08-27 04:53:37,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:53:37,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 04:53:37,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:37,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 04:53:37,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-27 04:53:37,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-27 04:53:37,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 237 flow. Second operand has 12 states, 12 states have (on average 128.91666666666666) internal successors, (1547), 12 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:37,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:37,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-27 04:53:37,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:37,334 INFO L124 PetriNetUnfolderBase]: 238/509 cut-off events. [2023-08-27 04:53:37,335 INFO L125 PetriNetUnfolderBase]: For 924/924 co-relation queries the response was YES. [2023-08-27 04:53:37,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1920 conditions, 509 events. 238/509 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2034 event pairs, 16 based on Foata normal form. 51/549 useless extension candidates. Maximal degree in co-relation 1896. Up to 237 conditions per place. [2023-08-27 04:53:37,339 INFO L140 encePairwiseOnDemand]: 295/301 looper letters, 194 selfloop transitions, 15 changer transitions 0/210 dead transitions. [2023-08-27 04:53:37,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 210 transitions, 1524 flow [2023-08-27 04:53:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 04:53:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 04:53:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1425 transitions. [2023-08-27 04:53:37,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473421926910299 [2023-08-27 04:53:37,343 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1425 transitions. [2023-08-27 04:53:37,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1425 transitions. [2023-08-27 04:53:37,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:37,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1425 transitions. [2023-08-27 04:53:37,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.5) internal successors, (1425), 10 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:37,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:37,352 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:37,352 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 237 flow. Second operand 10 states and 1425 transitions. [2023-08-27 04:53:37,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 210 transitions, 1524 flow [2023-08-27 04:53:37,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 210 transitions, 1497 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-27 04:53:37,359 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 335 flow [2023-08-27 04:53:37,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=335, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2023-08-27 04:53:37,360 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-08-27 04:53:37,360 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 335 flow [2023-08-27 04:53:37,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 128.91666666666666) internal successors, (1547), 12 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:37,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:37,361 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:37,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 04:53:37,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 04:53:37,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:37,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:37,572 INFO L85 PathProgramCache]: Analyzing trace with hash -171322200, now seen corresponding path program 1 times [2023-08-27 04:53:37,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:37,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669004432] [2023-08-27 04:53:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:37,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:38,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669004432] [2023-08-27 04:53:38,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669004432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:38,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541859279] [2023-08-27 04:53:38,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:38,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:38,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:38,110 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 04:53:38,112 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 04:53:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:38,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-27 04:53:38,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:53:38,277 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-27 04:53:38,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 04:53:38,285 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 04:53:38,395 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 04:53:38,505 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 04:53:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:38,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:53:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541859279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:53:38,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 04:53:38,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-08-27 04:53:38,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176661518] [2023-08-27 04:53:38,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:38,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 04:53:38,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:38,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 04:53:38,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-08-27 04:53:38,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 301 [2023-08-27 04:53:38,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 335 flow. Second operand has 10 states, 10 states have (on average 100.7) internal successors, (1007), 10 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:38,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:38,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 301 [2023-08-27 04:53:38,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:38,853 INFO L124 PetriNetUnfolderBase]: 244/539 cut-off events. [2023-08-27 04:53:38,853 INFO L125 PetriNetUnfolderBase]: For 1340/1340 co-relation queries the response was YES. [2023-08-27 04:53:38,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2162 conditions, 539 events. 244/539 cut-off events. For 1340/1340 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2047 event pairs, 58 based on Foata normal form. 21/549 useless extension candidates. Maximal degree in co-relation 2136. Up to 368 conditions per place. [2023-08-27 04:53:38,858 INFO L140 encePairwiseOnDemand]: 291/301 looper letters, 84 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2023-08-27 04:53:38,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 96 transitions, 784 flow [2023-08-27 04:53:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 04:53:38,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 04:53:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1059 transitions. [2023-08-27 04:53:38,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3518272425249169 [2023-08-27 04:53:38,862 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1059 transitions. [2023-08-27 04:53:38,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1059 transitions. [2023-08-27 04:53:38,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:38,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1059 transitions. [2023-08-27 04:53:38,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.9) internal successors, (1059), 10 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:38,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:38,869 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:38,869 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 335 flow. Second operand 10 states and 1059 transitions. [2023-08-27 04:53:38,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 96 transitions, 784 flow [2023-08-27 04:53:38,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 757 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-27 04:53:38,876 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 391 flow [2023-08-27 04:53:38,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=391, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2023-08-27 04:53:38,876 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2023-08-27 04:53:38,877 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 391 flow [2023-08-27 04:53:38,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 100.7) internal successors, (1007), 10 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:38,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:38,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:38,886 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 04:53:39,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:39,087 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:39,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash 48542092, now seen corresponding path program 1 times [2023-08-27 04:53:39,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:39,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796538967] [2023-08-27 04:53:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:39,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:39,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:39,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796538967] [2023-08-27 04:53:39,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796538967] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:39,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146647638] [2023-08-27 04:53:39,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:39,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:39,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:39,839 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 04:53:39,864 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 04:53:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:39,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-27 04:53:39,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:53:39,966 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-27 04:53:39,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 04:53:39,973 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 04:53:40,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-08-27 04:53:40,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-08-27 04:53:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:40,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:53:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:40,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146647638] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:40,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 04:53:40,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 8] total 30 [2023-08-27 04:53:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901698275] [2023-08-27 04:53:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:40,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 04:53:40,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 04:53:40,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2023-08-27 04:53:40,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 301 [2023-08-27 04:53:40,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 391 flow. Second operand has 12 states, 12 states have (on average 90.5) internal successors, (1086), 12 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:40,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:40,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 301 [2023-08-27 04:53:40,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:41,634 INFO L124 PetriNetUnfolderBase]: 551/1183 cut-off events. [2023-08-27 04:53:41,635 INFO L125 PetriNetUnfolderBase]: For 3496/3496 co-relation queries the response was YES. [2023-08-27 04:53:41,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 1183 events. 551/1183 cut-off events. For 3496/3496 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6014 event pairs, 73 based on Foata normal form. 90/1273 useless extension candidates. Maximal degree in co-relation 4787. Up to 318 conditions per place. [2023-08-27 04:53:41,644 INFO L140 encePairwiseOnDemand]: 285/301 looper letters, 206 selfloop transitions, 50 changer transitions 51/308 dead transitions. [2023-08-27 04:53:41,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 308 transitions, 2634 flow [2023-08-27 04:53:41,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 04:53:41,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 04:53:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2223 transitions. [2023-08-27 04:53:41,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3211035678174202 [2023-08-27 04:53:41,651 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2223 transitions. [2023-08-27 04:53:41,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2223 transitions. [2023-08-27 04:53:41,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:41,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2223 transitions. [2023-08-27 04:53:41,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 96.65217391304348) internal successors, (2223), 23 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:41,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 301.0) internal successors, (7224), 24 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:41,667 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 301.0) internal successors, (7224), 24 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:41,667 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 391 flow. Second operand 23 states and 2223 transitions. [2023-08-27 04:53:41,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 308 transitions, 2634 flow [2023-08-27 04:53:41,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 308 transitions, 2602 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-27 04:53:41,682 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 841 flow [2023-08-27 04:53:41,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=841, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2023-08-27 04:53:41,682 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 69 predicate places. [2023-08-27 04:53:41,682 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 841 flow [2023-08-27 04:53:41,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 90.5) internal successors, (1086), 12 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:41,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:41,683 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:41,689 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 04:53:41,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:41,889 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:41,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:41,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1544275307, now seen corresponding path program 1 times [2023-08-27 04:53:41,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:41,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982828422] [2023-08-27 04:53:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:41,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:42,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:42,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:42,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982828422] [2023-08-27 04:53:42,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982828422] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:42,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73326649] [2023-08-27 04:53:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:42,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:42,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:42,232 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 04:53:42,251 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 04:53:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:42,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 04:53:42,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:53:42,485 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 04:53:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:42,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:53:42,656 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 04:53:42,656 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2023-08-27 04:53:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:42,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73326649] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:42,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 04:53:42,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 6] total 20 [2023-08-27 04:53:42,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860055056] [2023-08-27 04:53:42,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:42,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 04:53:42,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:42,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 04:53:42,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-08-27 04:53:42,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 301 [2023-08-27 04:53:42,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 841 flow. Second operand has 7 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:42,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:42,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 301 [2023-08-27 04:53:42,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:43,062 INFO L124 PetriNetUnfolderBase]: 541/1151 cut-off events. [2023-08-27 04:53:43,062 INFO L125 PetriNetUnfolderBase]: For 5069/5069 co-relation queries the response was YES. [2023-08-27 04:53:43,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5465 conditions, 1151 events. 541/1151 cut-off events. For 5069/5069 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5687 event pairs, 120 based on Foata normal form. 16/1167 useless extension candidates. Maximal degree in co-relation 5425. Up to 909 conditions per place. [2023-08-27 04:53:43,074 INFO L140 encePairwiseOnDemand]: 291/301 looper letters, 108 selfloop transitions, 21 changer transitions 0/130 dead transitions. [2023-08-27 04:53:43,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 130 transitions, 1301 flow [2023-08-27 04:53:43,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 04:53:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 04:53:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 839 transitions. [2023-08-27 04:53:43,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.348421926910299 [2023-08-27 04:53:43,077 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 839 transitions. [2023-08-27 04:53:43,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 839 transitions. [2023-08-27 04:53:43,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:43,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 839 transitions. [2023-08-27 04:53:43,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:43,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 301.0) internal successors, (2709), 9 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:43,084 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 301.0) internal successors, (2709), 9 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:43,084 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 841 flow. Second operand 8 states and 839 transitions. [2023-08-27 04:53:43,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 130 transitions, 1301 flow [2023-08-27 04:53:43,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 130 transitions, 1203 flow, removed 49 selfloop flow, removed 0 redundant places. [2023-08-27 04:53:43,107 INFO L231 Difference]: Finished difference. Result has 107 places, 93 transitions, 732 flow [2023-08-27 04:53:43,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=732, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2023-08-27 04:53:43,108 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2023-08-27 04:53:43,108 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 732 flow [2023-08-27 04:53:43,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:43,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:43,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:43,118 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 04:53:43,315 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,SelfDestructingSolverStorable12 [2023-08-27 04:53:43,316 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:43,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1431954735, now seen corresponding path program 1 times [2023-08-27 04:53:43,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:43,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373773306] [2023-08-27 04:53:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:43,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 04:53:43,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:43,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373773306] [2023-08-27 04:53:43,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373773306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:53:43,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:53:43,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 04:53:43,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483481085] [2023-08-27 04:53:43,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:53:43,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 04:53:43,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:43,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 04:53:43,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-27 04:53:43,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 301 [2023-08-27 04:53:43,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 732 flow. Second operand has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:43,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:43,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 301 [2023-08-27 04:53:43,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:43,955 INFO L124 PetriNetUnfolderBase]: 668/1422 cut-off events. [2023-08-27 04:53:43,955 INFO L125 PetriNetUnfolderBase]: For 5161/5161 co-relation queries the response was YES. [2023-08-27 04:53:43,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6646 conditions, 1422 events. 668/1422 cut-off events. For 5161/5161 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7459 event pairs, 10 based on Foata normal form. 16/1438 useless extension candidates. Maximal degree in co-relation 6603. Up to 793 conditions per place. [2023-08-27 04:53:43,969 INFO L140 encePairwiseOnDemand]: 293/301 looper letters, 115 selfloop transitions, 33 changer transitions 0/149 dead transitions. [2023-08-27 04:53:43,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 149 transitions, 1447 flow [2023-08-27 04:53:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 04:53:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 04:53:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1049 transitions. [2023-08-27 04:53:43,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34850498338870434 [2023-08-27 04:53:43,972 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1049 transitions. [2023-08-27 04:53:43,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1049 transitions. [2023-08-27 04:53:43,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:43,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1049 transitions. [2023-08-27 04:53:43,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.9) internal successors, (1049), 10 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:43,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:43,992 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:43,992 INFO L175 Difference]: Start difference. First operand has 107 places, 93 transitions, 732 flow. Second operand 10 states and 1049 transitions. [2023-08-27 04:53:43,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 149 transitions, 1447 flow [2023-08-27 04:53:44,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 149 transitions, 1399 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-27 04:53:44,017 INFO L231 Difference]: Finished difference. Result has 111 places, 101 transitions, 862 flow [2023-08-27 04:53:44,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=862, PETRI_PLACES=111, PETRI_TRANSITIONS=101} [2023-08-27 04:53:44,018 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 79 predicate places. [2023-08-27 04:53:44,018 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 101 transitions, 862 flow [2023-08-27 04:53:44,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:44,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:44,019 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:44,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 04:53:44,019 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:44,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1983408406, now seen corresponding path program 1 times [2023-08-27 04:53:44,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:44,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863628438] [2023-08-27 04:53:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:44,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:44,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863628438] [2023-08-27 04:53:44,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863628438] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:44,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953728269] [2023-08-27 04:53:44,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:44,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:44,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:44,840 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 04:53:44,860 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 04:53:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:44,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-27 04:53:44,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:53:45,174 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 04:53:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 04:53:45,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:53:45,497 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 04:53:45,497 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 55 [2023-08-27 04:53:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 04:53:45,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953728269] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:53:45,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:53:45,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 31 [2023-08-27 04:53:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317951969] [2023-08-27 04:53:45,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:53:45,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-27 04:53:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:45,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-27 04:53:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2023-08-27 04:53:45,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 301 [2023-08-27 04:53:45,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 862 flow. Second operand has 31 states, 31 states have (on average 91.0) internal successors, (2821), 31 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:45,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:45,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 301 [2023-08-27 04:53:45,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:46,801 INFO L124 PetriNetUnfolderBase]: 525/1147 cut-off events. [2023-08-27 04:53:46,801 INFO L125 PetriNetUnfolderBase]: For 4758/4758 co-relation queries the response was YES. [2023-08-27 04:53:46,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5338 conditions, 1147 events. 525/1147 cut-off events. For 4758/4758 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5878 event pairs, 53 based on Foata normal form. 83/1230 useless extension candidates. Maximal degree in co-relation 5295. Up to 290 conditions per place. [2023-08-27 04:53:46,813 INFO L140 encePairwiseOnDemand]: 285/301 looper letters, 150 selfloop transitions, 43 changer transitions 8/202 dead transitions. [2023-08-27 04:53:46,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 202 transitions, 1941 flow [2023-08-27 04:53:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 04:53:46,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 04:53:46,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2167 transitions. [2023-08-27 04:53:46,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31301458905098944 [2023-08-27 04:53:46,822 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2167 transitions. [2023-08-27 04:53:46,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2167 transitions. [2023-08-27 04:53:46,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:46,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2167 transitions. [2023-08-27 04:53:46,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 94.21739130434783) internal successors, (2167), 23 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:46,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 301.0) internal successors, (7224), 24 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:46,838 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 301.0) internal successors, (7224), 24 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:46,838 INFO L175 Difference]: Start difference. First operand has 111 places, 101 transitions, 862 flow. Second operand 23 states and 2167 transitions. [2023-08-27 04:53:46,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 202 transitions, 1941 flow [2023-08-27 04:53:46,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 202 transitions, 1855 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-08-27 04:53:46,861 INFO L231 Difference]: Finished difference. Result has 125 places, 94 transitions, 874 flow [2023-08-27 04:53:46,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=874, PETRI_PLACES=125, PETRI_TRANSITIONS=94} [2023-08-27 04:53:46,862 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 93 predicate places. [2023-08-27 04:53:46,862 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 94 transitions, 874 flow [2023-08-27 04:53:46,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 91.0) internal successors, (2821), 31 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:46,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:46,863 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:46,876 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 04:53:47,069 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,SelfDestructingSolverStorable14 [2023-08-27 04:53:47,069 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:47,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:47,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1414248570, now seen corresponding path program 2 times [2023-08-27 04:53:47,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:47,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484590996] [2023-08-27 04:53:47,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:47,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:47,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484590996] [2023-08-27 04:53:47,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484590996] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781408551] [2023-08-27 04:53:47,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 04:53:47,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:47,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:47,802 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 04:53:47,825 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 04:53:47,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 04:53:47,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:53:47,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 04:53:47,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:53:48,118 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 04:53:48,228 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 04:53:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:48,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:53:48,506 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 04:53:48,506 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2023-08-27 04:53:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:48,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781408551] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:53:48,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:53:48,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 33 [2023-08-27 04:53:48,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124627043] [2023-08-27 04:53:48,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:53:48,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 04:53:48,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:48,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 04:53:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2023-08-27 04:53:48,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 301 [2023-08-27 04:53:48,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 94 transitions, 874 flow. Second operand has 33 states, 33 states have (on average 95.12121212121212) internal successors, (3139), 33 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:48,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:48,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 301 [2023-08-27 04:53:48,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:49,556 INFO L124 PetriNetUnfolderBase]: 352/812 cut-off events. [2023-08-27 04:53:49,556 INFO L125 PetriNetUnfolderBase]: For 4046/4046 co-relation queries the response was YES. [2023-08-27 04:53:49,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4110 conditions, 812 events. 352/812 cut-off events. For 4046/4046 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3242 event pairs, 65 based on Foata normal form. 30/842 useless extension candidates. Maximal degree in co-relation 4064. Up to 299 conditions per place. [2023-08-27 04:53:49,564 INFO L140 encePairwiseOnDemand]: 290/301 looper letters, 112 selfloop transitions, 38 changer transitions 9/160 dead transitions. [2023-08-27 04:53:49,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 160 transitions, 1621 flow [2023-08-27 04:53:49,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 04:53:49,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 04:53:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1856 transitions. [2023-08-27 04:53:49,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32453226088477005 [2023-08-27 04:53:49,567 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1856 transitions. [2023-08-27 04:53:49,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1856 transitions. [2023-08-27 04:53:49,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:49,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1856 transitions. [2023-08-27 04:53:49,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.6842105263158) internal successors, (1856), 19 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:49,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 301.0) internal successors, (6020), 20 states have internal predecessors, (6020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:49,577 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 301.0) internal successors, (6020), 20 states have internal predecessors, (6020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:49,577 INFO L175 Difference]: Start difference. First operand has 125 places, 94 transitions, 874 flow. Second operand 19 states and 1856 transitions. [2023-08-27 04:53:49,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 160 transitions, 1621 flow [2023-08-27 04:53:49,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 160 transitions, 1503 flow, removed 28 selfloop flow, removed 17 redundant places. [2023-08-27 04:53:49,592 INFO L231 Difference]: Finished difference. Result has 116 places, 84 transitions, 782 flow [2023-08-27 04:53:49,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=782, PETRI_PLACES=116, PETRI_TRANSITIONS=84} [2023-08-27 04:53:49,592 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 84 predicate places. [2023-08-27 04:53:49,592 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 84 transitions, 782 flow [2023-08-27 04:53:49,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 95.12121212121212) internal successors, (3139), 33 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:49,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:49,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:53:49,603 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 04:53:49,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:49,800 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:49,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1305870829, now seen corresponding path program 1 times [2023-08-27 04:53:49,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:49,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247697282] [2023-08-27 04:53:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:49,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 04:53:50,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:50,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247697282] [2023-08-27 04:53:50,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247697282] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:50,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011692307] [2023-08-27 04:53:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:50,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:50,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:50,073 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 04:53:50,076 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 04:53:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:50,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 04:53:50,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:53:50,285 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 04:53:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 04:53:50,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:53:50,357 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 04:53:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 04:53:50,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011692307] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:53:50,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:53:50,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2023-08-27 04:53:50,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564256058] [2023-08-27 04:53:50,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:53:50,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 04:53:50,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:50,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 04:53:50,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-27 04:53:50,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 301 [2023-08-27 04:53:50,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 84 transitions, 782 flow. Second operand has 15 states, 15 states have (on average 113.2) internal successors, (1698), 15 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:50,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:50,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 301 [2023-08-27 04:53:50,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:50,606 INFO L124 PetriNetUnfolderBase]: 344/795 cut-off events. [2023-08-27 04:53:50,606 INFO L125 PetriNetUnfolderBase]: For 3744/3744 co-relation queries the response was YES. [2023-08-27 04:53:50,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3964 conditions, 795 events. 344/795 cut-off events. For 3744/3744 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3145 event pairs, 90 based on Foata normal form. 9/804 useless extension candidates. Maximal degree in co-relation 3924. Up to 753 conditions per place. [2023-08-27 04:53:50,613 INFO L140 encePairwiseOnDemand]: 298/301 looper letters, 90 selfloop transitions, 4 changer transitions 6/101 dead transitions. [2023-08-27 04:53:50,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 101 transitions, 1099 flow [2023-08-27 04:53:50,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:53:50,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:53:50,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 470 transitions. [2023-08-27 04:53:50,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903654485049834 [2023-08-27 04:53:50,614 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 470 transitions. [2023-08-27 04:53:50,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 470 transitions. [2023-08-27 04:53:50,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:50,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 470 transitions. [2023-08-27 04:53:50,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:50,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:50,617 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:50,617 INFO L175 Difference]: Start difference. First operand has 116 places, 84 transitions, 782 flow. Second operand 4 states and 470 transitions. [2023-08-27 04:53:50,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 101 transitions, 1099 flow [2023-08-27 04:53:50,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 101 transitions, 1006 flow, removed 20 selfloop flow, removed 12 redundant places. [2023-08-27 04:53:50,628 INFO L231 Difference]: Finished difference. Result has 105 places, 80 transitions, 672 flow [2023-08-27 04:53:50,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=672, PETRI_PLACES=105, PETRI_TRANSITIONS=80} [2023-08-27 04:53:50,629 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2023-08-27 04:53:50,629 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 80 transitions, 672 flow [2023-08-27 04:53:50,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.2) internal successors, (1698), 15 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:50,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:50,630 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2023-08-27 04:53:50,638 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 04:53:50,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 04:53:50,836 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:50,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:50,837 INFO L85 PathProgramCache]: Analyzing trace with hash 290749534, now seen corresponding path program 1 times [2023-08-27 04:53:50,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:50,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792790162] [2023-08-27 04:53:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:50,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:50,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:50,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792790162] [2023-08-27 04:53:50,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792790162] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:50,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411306415] [2023-08-27 04:53:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:50,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:50,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:50,971 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 04:53:50,974 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 04:53:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:51,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 04:53:51,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:53:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:51,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:53:51,261 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:51,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411306415] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:53:51,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:53:51,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-27 04:53:51,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476754225] [2023-08-27 04:53:51,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:53:51,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 04:53:51,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:51,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 04:53:51,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-08-27 04:53:51,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-27 04:53:51,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 80 transitions, 672 flow. Second operand has 24 states, 24 states have (on average 128.625) internal successors, (3087), 24 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:51,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:51,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-27 04:53:51,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:51,968 INFO L124 PetriNetUnfolderBase]: 548/1576 cut-off events. [2023-08-27 04:53:51,968 INFO L125 PetriNetUnfolderBase]: For 10552/10552 co-relation queries the response was YES. [2023-08-27 04:53:51,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7913 conditions, 1576 events. 548/1576 cut-off events. For 10552/10552 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7580 event pairs, 33 based on Foata normal form. 228/1804 useless extension candidates. Maximal degree in co-relation 7874. Up to 385 conditions per place. [2023-08-27 04:53:51,985 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 558 selfloop transitions, 29 changer transitions 110/698 dead transitions. [2023-08-27 04:53:51,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 698 transitions, 7498 flow [2023-08-27 04:53:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-27 04:53:51,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-27 04:53:51,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3046 transitions. [2023-08-27 04:53:51,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599818785865297 [2023-08-27 04:53:51,990 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3046 transitions. [2023-08-27 04:53:51,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3046 transitions. [2023-08-27 04:53:51,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:51,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3046 transitions. [2023-08-27 04:53:51,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 138.45454545454547) internal successors, (3046), 22 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:52,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 301.0) internal successors, (6923), 23 states have internal predecessors, (6923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:52,001 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 301.0) internal successors, (6923), 23 states have internal predecessors, (6923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:52,001 INFO L175 Difference]: Start difference. First operand has 105 places, 80 transitions, 672 flow. Second operand 22 states and 3046 transitions. [2023-08-27 04:53:52,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 698 transitions, 7498 flow [2023-08-27 04:53:52,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 698 transitions, 7476 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:53:52,041 INFO L231 Difference]: Finished difference. Result has 129 places, 98 transitions, 893 flow [2023-08-27 04:53:52,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=893, PETRI_PLACES=129, PETRI_TRANSITIONS=98} [2023-08-27 04:53:52,044 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2023-08-27 04:53:52,044 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 98 transitions, 893 flow [2023-08-27 04:53:52,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 128.625) internal successors, (3087), 24 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:52,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:52,045 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-27 04:53:52,055 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 04:53:52,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 04:53:52,251 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:52,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:52,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1400309654, now seen corresponding path program 2 times [2023-08-27 04:53:52,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:52,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138639971] [2023-08-27 04:53:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:52,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:52,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:52,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138639971] [2023-08-27 04:53:52,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138639971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:52,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693044951] [2023-08-27 04:53:52,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 04:53:52,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:52,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:52,644 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 04:53:52,646 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 04:53:52,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 04:53:52,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:53:52,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 04:53:52,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:53:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:52,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:53:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:53,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693044951] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:53:53,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:53:53,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2023-08-27 04:53:53,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582620221] [2023-08-27 04:53:53,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:53:53,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-27 04:53:53,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-27 04:53:53,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2023-08-27 04:53:53,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-27 04:53:53,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 98 transitions, 893 flow. Second operand has 48 states, 48 states have (on average 128.3125) internal successors, (6159), 48 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:53,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:53,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-27 04:53:53,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:53:55,102 INFO L124 PetriNetUnfolderBase]: 1172/3448 cut-off events. [2023-08-27 04:53:55,102 INFO L125 PetriNetUnfolderBase]: For 47653/47653 co-relation queries the response was YES. [2023-08-27 04:53:55,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18675 conditions, 3448 events. 1172/3448 cut-off events. For 47653/47653 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 17283 event pairs, 33 based on Foata normal form. 456/3904 useless extension candidates. Maximal degree in co-relation 18631. Up to 894 conditions per place. [2023-08-27 04:53:55,135 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 1266 selfloop transitions, 65 changer transitions 254/1586 dead transitions. [2023-08-27 04:53:55,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1586 transitions, 17290 flow [2023-08-27 04:53:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-27 04:53:55,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-27 04:53:55,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 6388 transitions. [2023-08-27 04:53:55,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136068178535317 [2023-08-27 04:53:55,142 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 6388 transitions. [2023-08-27 04:53:55,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 6388 transitions. [2023-08-27 04:53:55,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:53:55,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 6388 transitions. [2023-08-27 04:53:55,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 138.8695652173913) internal successors, (6388), 46 states have internal predecessors, (6388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:55,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 301.0) internal successors, (14147), 47 states have internal predecessors, (14147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:55,168 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 301.0) internal successors, (14147), 47 states have internal predecessors, (14147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:55,168 INFO L175 Difference]: Start difference. First operand has 129 places, 98 transitions, 893 flow. Second operand 46 states and 6388 transitions. [2023-08-27 04:53:55,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1586 transitions, 17290 flow [2023-08-27 04:53:55,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 1586 transitions, 17142 flow, removed 63 selfloop flow, removed 9 redundant places. [2023-08-27 04:53:55,246 INFO L231 Difference]: Finished difference. Result has 177 places, 134 transitions, 1277 flow [2023-08-27 04:53:55,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1277, PETRI_PLACES=177, PETRI_TRANSITIONS=134} [2023-08-27 04:53:55,247 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 145 predicate places. [2023-08-27 04:53:55,247 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 134 transitions, 1277 flow [2023-08-27 04:53:55,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 128.3125) internal successors, (6159), 48 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:55,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:53:55,248 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-27 04:53:55,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 04:53:55,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:55,455 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:53:55,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:53:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash 126665858, now seen corresponding path program 3 times [2023-08-27 04:53:55,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:53:55,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175687778] [2023-08-27 04:53:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:53:55,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:53:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:53:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 0 proven. 958 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:53:56,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:53:56,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175687778] [2023-08-27 04:53:56,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175687778] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:53:56,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832145323] [2023-08-27 04:53:56,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 04:53:56,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:53:56,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:53:56,753 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 04:53:56,777 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 04:53:56,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-27 04:53:56,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:53:56,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 82 conjunts are in the unsatisfiable core [2023-08-27 04:53:56,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:53:56,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-27 04:53:56,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 04:53:56,999 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 04:53:57,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 04:53:57,282 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 04:53:57,405 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 04:53:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 140 proven. 168 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-08-27 04:53:57,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:53:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 122 proven. 186 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-08-27 04:53:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832145323] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:53:58,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:53:58,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 12, 12] total 70 [2023-08-27 04:53:58,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087352463] [2023-08-27 04:53:58,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:53:58,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-08-27 04:53:58,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:53:58,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-08-27 04:53:58,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=4027, Unknown=0, NotChecked=0, Total=4830 [2023-08-27 04:53:58,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 301 [2023-08-27 04:53:58,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 134 transitions, 1277 flow. Second operand has 70 states, 70 states have (on average 94.25714285714285) internal successors, (6598), 70 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:53:58,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:53:58,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 301 [2023-08-27 04:53:58,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:54:01,697 INFO L124 PetriNetUnfolderBase]: 1220/3596 cut-off events. [2023-08-27 04:54:01,697 INFO L125 PetriNetUnfolderBase]: For 40407/40407 co-relation queries the response was YES. [2023-08-27 04:54:01,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20144 conditions, 3596 events. 1220/3596 cut-off events. For 40407/40407 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 17910 event pairs, 33 based on Foata normal form. 42/3638 useless extension candidates. Maximal degree in co-relation 20088. Up to 879 conditions per place. [2023-08-27 04:54:01,725 INFO L140 encePairwiseOnDemand]: 289/301 looper letters, 1132 selfloop transitions, 301 changer transitions 266/1700 dead transitions. [2023-08-27 04:54:01,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 1700 transitions, 18469 flow [2023-08-27 04:54:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-08-27 04:54:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2023-08-27 04:54:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 9816 transitions. [2023-08-27 04:54:01,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3294070270814457 [2023-08-27 04:54:01,737 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 9816 transitions. [2023-08-27 04:54:01,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 9816 transitions. [2023-08-27 04:54:01,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:54:01,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 9816 transitions. [2023-08-27 04:54:01,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 99.15151515151516) internal successors, (9816), 99 states have internal predecessors, (9816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:01,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 301.0) internal successors, (30100), 100 states have internal predecessors, (30100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:01,778 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 301.0) internal successors, (30100), 100 states have internal predecessors, (30100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:01,779 INFO L175 Difference]: Start difference. First operand has 177 places, 134 transitions, 1277 flow. Second operand 99 states and 9816 transitions. [2023-08-27 04:54:01,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 1700 transitions, 18469 flow [2023-08-27 04:54:01,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 1700 transitions, 18281 flow, removed 54 selfloop flow, removed 21 redundant places. [2023-08-27 04:54:01,890 INFO L231 Difference]: Finished difference. Result has 267 places, 358 transitions, 3511 flow [2023-08-27 04:54:01,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=3511, PETRI_PLACES=267, PETRI_TRANSITIONS=358} [2023-08-27 04:54:01,891 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 235 predicate places. [2023-08-27 04:54:01,891 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 358 transitions, 3511 flow [2023-08-27 04:54:01,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 94.25714285714285) internal successors, (6598), 70 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:01,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:54:01,893 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 22, 22, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:54:01,899 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 04:54:02,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:54:02,100 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:54:02,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:54:02,100 INFO L85 PathProgramCache]: Analyzing trace with hash 58371100, now seen corresponding path program 1 times [2023-08-27 04:54:02,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:54:02,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055913004] [2023-08-27 04:54:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:54:02,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:54:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:54:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 1062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:54:03,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:54:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055913004] [2023-08-27 04:54:03,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055913004] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:54:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181981118] [2023-08-27 04:54:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:54:03,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:54:03,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:54:03,399 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 04:54:03,401 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 04:54:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:54:03,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-27 04:54:03,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:54:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 1062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:54:03,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:54:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 1062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:54:05,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181981118] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:54:05,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:54:05,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 99 [2023-08-27 04:54:05,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543773703] [2023-08-27 04:54:05,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:54:05,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-08-27 04:54:05,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:54:05,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-08-27 04:54:05,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2023-08-27 04:54:05,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-27 04:54:05,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 358 transitions, 3511 flow. Second operand has 100 states, 100 states have (on average 128.25) internal successors, (12825), 100 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:05,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:54:05,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-27 04:54:05,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:54:11,060 INFO L124 PetriNetUnfolderBase]: 2520/7496 cut-off events. [2023-08-27 04:54:11,060 INFO L125 PetriNetUnfolderBase]: For 328096/328096 co-relation queries the response was YES. [2023-08-27 04:54:11,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43272 conditions, 7496 events. 2520/7496 cut-off events. For 328096/328096 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 38027 event pairs, 33 based on Foata normal form. 950/8446 useless extension candidates. Maximal degree in co-relation 43202. Up to 1829 conditions per place. [2023-08-27 04:54:11,137 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 2807 selfloop transitions, 154 changer transitions 566/3528 dead transitions. [2023-08-27 04:54:11,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 3528 transitions, 41751 flow [2023-08-27 04:54:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-08-27 04:54:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2023-08-27 04:54:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 13629 transitions. [2023-08-27 04:54:11,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46203132415757 [2023-08-27 04:54:11,154 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 13629 transitions. [2023-08-27 04:54:11,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 13629 transitions. [2023-08-27 04:54:11,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:54:11,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 13629 transitions. [2023-08-27 04:54:11,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 139.07142857142858) internal successors, (13629), 98 states have internal predecessors, (13629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:11,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 301.0) internal successors, (29799), 99 states have internal predecessors, (29799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:11,384 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 301.0) internal successors, (29799), 99 states have internal predecessors, (29799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:11,384 INFO L175 Difference]: Start difference. First operand has 267 places, 358 transitions, 3511 flow. Second operand 98 states and 13629 transitions. [2023-08-27 04:54:11,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 3528 transitions, 41751 flow [2023-08-27 04:54:11,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 3528 transitions, 41487 flow, removed 52 selfloop flow, removed 49 redundant places. [2023-08-27 04:54:11,797 INFO L231 Difference]: Finished difference. Result has 340 places, 433 transitions, 4436 flow [2023-08-27 04:54:11,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=4436, PETRI_PLACES=340, PETRI_TRANSITIONS=433} [2023-08-27 04:54:11,798 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 308 predicate places. [2023-08-27 04:54:11,798 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 433 transitions, 4436 flow [2023-08-27 04:54:11,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 128.25) internal successors, (12825), 100 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:11,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:54:11,800 INFO L208 CegarLoopForPetriNet]: trace histogram [49, 48, 47, 47, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:54:11,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 04:54:12,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-27 04:54:12,000 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:54:12,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:54:12,001 INFO L85 PathProgramCache]: Analyzing trace with hash -46271666, now seen corresponding path program 2 times [2023-08-27 04:54:12,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:54:12,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922214762] [2023-08-27 04:54:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:54:12,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:54:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:54:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4612 backedges. 0 proven. 4612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:54:16,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:54:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922214762] [2023-08-27 04:54:16,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922214762] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:54:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161455365] [2023-08-27 04:54:16,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 04:54:16,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:54:16,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:54:16,591 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 04:54:16,593 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 04:54:16,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 04:54:16,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:54:16,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 99 conjunts are in the unsatisfiable core [2023-08-27 04:54:16,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:54:17,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4612 backedges. 0 proven. 4612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:54:17,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:54:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4612 backedges. 0 proven. 4612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:54:23,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161455365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:54:23,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:54:23,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 199 [2023-08-27 04:54:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201287929] [2023-08-27 04:54:23,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:54:23,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2023-08-27 04:54:23,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:54:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2023-08-27 04:54:23,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10099, Invalid=29701, Unknown=0, NotChecked=0, Total=39800 [2023-08-27 04:54:23,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-27 04:54:23,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 433 transitions, 4436 flow. Second operand has 200 states, 200 states have (on average 128.125) internal successors, (25625), 200 states have internal predecessors, (25625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:23,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:54:23,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-27 04:54:23,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:54:49,610 INFO L124 PetriNetUnfolderBase]: 5120/15296 cut-off events. [2023-08-27 04:54:49,610 INFO L125 PetriNetUnfolderBase]: For 2404701/2404701 co-relation queries the response was YES. [2023-08-27 04:54:49,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92765 conditions, 15296 events. 5120/15296 cut-off events. For 2404701/2404701 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 78953 event pairs, 33 based on Foata normal form. 1900/17196 useless extension candidates. Maximal degree in co-relation 92671. Up to 3729 conditions per place. [2023-08-27 04:54:49,812 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 5757 selfloop transitions, 304 changer transitions 1166/7228 dead transitions. [2023-08-27 04:54:49,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 7228 transitions, 86126 flow [2023-08-27 04:54:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-08-27 04:54:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2023-08-27 04:54:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 27554 transitions. [2023-08-27 04:54:49,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46233095070304375 [2023-08-27 04:54:49,844 INFO L72 ComplementDD]: Start complementDD. Operand 198 states and 27554 transitions. [2023-08-27 04:54:49,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 198 states and 27554 transitions. [2023-08-27 04:54:49,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:54:49,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 198 states and 27554 transitions. [2023-08-27 04:54:49,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 199 states, 198 states have (on average 139.16161616161617) internal successors, (27554), 198 states have internal predecessors, (27554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:49,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 199 states, 199 states have (on average 301.0) internal successors, (59899), 199 states have internal predecessors, (59899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:49,958 INFO L81 ComplementDD]: Finished complementDD. Result has 199 states, 199 states have (on average 301.0) internal successors, (59899), 199 states have internal predecessors, (59899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:49,958 INFO L175 Difference]: Start difference. First operand has 340 places, 433 transitions, 4436 flow. Second operand 198 states and 27554 transitions. [2023-08-27 04:54:49,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 7228 transitions, 86126 flow [2023-08-27 04:54:51,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 7228 transitions, 85096 flow, removed 430 selfloop flow, removed 48 redundant places. [2023-08-27 04:54:51,201 INFO L231 Difference]: Finished difference. Result has 539 places, 583 transitions, 5970 flow [2023-08-27 04:54:51,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=3906, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=198, PETRI_FLOW=5970, PETRI_PLACES=539, PETRI_TRANSITIONS=583} [2023-08-27 04:54:51,202 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2023-08-27 04:54:51,203 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 583 transitions, 5970 flow [2023-08-27 04:54:51,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 200 states have (on average 128.125) internal successors, (25625), 200 states have internal predecessors, (25625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:54:51,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:54:51,207 INFO L208 CegarLoopForPetriNet]: trace histogram [99, 98, 97, 97, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:54:51,216 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 04:54:51,411 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,SelfDestructingSolverStorable21 [2023-08-27 04:54:51,411 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:54:51,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:54:51,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1196393010, now seen corresponding path program 3 times [2023-08-27 04:54:51,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:54:51,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756162914] [2023-08-27 04:54:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:54:51,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:54:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:55:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 19212 backedges. 0 proven. 19212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:55:09,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:55:09,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756162914] [2023-08-27 04:55:09,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756162914] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:55:09,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866696274] [2023-08-27 04:55:09,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 04:55:09,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:55:09,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:55:09,397 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 04:55:09,399 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 04:55:09,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 04:55:09,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:55:09,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-27 04:55:09,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:55:10,186 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 04:55:10,509 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 04:55:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 19212 backedges. 1064 proven. 190 refuted. 0 times theorem prover too weak. 17958 trivial. 0 not checked. [2023-08-27 04:55:12,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:55:13,684 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 04:55:13,685 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2023-08-27 04:55:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 19212 backedges. 968 proven. 286 refuted. 0 times theorem prover too weak. 17958 trivial. 0 not checked. [2023-08-27 04:55:13,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866696274] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:55:13,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:55:13,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [199, 9, 10] total 216 [2023-08-27 04:55:13,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022353365] [2023-08-27 04:55:13,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:55:13,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2023-08-27 04:55:13,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:55:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2023-08-27 04:55:13,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10178, Invalid=36262, Unknown=0, NotChecked=0, Total=46440 [2023-08-27 04:55:13,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 301 [2023-08-27 04:55:13,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 583 transitions, 5970 flow. Second operand has 216 states, 216 states have (on average 83.17129629629629) internal successors, (17965), 216 states have internal predecessors, (17965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:55:13,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:55:13,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 301 [2023-08-27 04:55:13,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:58:28,305 INFO L124 PetriNetUnfolderBase]: 4190/12712 cut-off events. [2023-08-27 04:58:28,305 INFO L125 PetriNetUnfolderBase]: For 416911/416911 co-relation queries the response was YES. [2023-08-27 04:58:28,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78152 conditions, 12712 events. 4190/12712 cut-off events. For 416911/416911 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 55491 event pairs, 11 based on Foata normal form. 132/12844 useless extension candidates. Maximal degree in co-relation 78009. Up to 3277 conditions per place. [2023-08-27 04:58:28,444 INFO L140 encePairwiseOnDemand]: 287/301 looper letters, 3163 selfloop transitions, 3646 changer transitions 1178/7988 dead transitions. [2023-08-27 04:58:28,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1830 places, 7988 transitions, 94867 flow [2023-08-27 04:58:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1292 states. [2023-08-27 04:58:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2023-08-27 04:58:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 109989 transitions. [2023-08-27 04:58:28,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2828265945301009 [2023-08-27 04:58:28,540 INFO L72 ComplementDD]: Start complementDD. Operand 1292 states and 109989 transitions. [2023-08-27 04:58:28,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1292 states and 109989 transitions. [2023-08-27 04:58:28,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:58:28,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 1292 states and 109989 transitions. [2023-08-27 04:58:28,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 1293 states, 1292 states have (on average 85.13080495356037) internal successors, (109989), 1292 states have internal predecessors, (109989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:58:29,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 1293 states, 1293 states have (on average 301.0) internal successors, (389193), 1293 states have internal predecessors, (389193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:58:29,233 INFO L81 ComplementDD]: Finished complementDD. Result has 1293 states, 1293 states have (on average 301.0) internal successors, (389193), 1293 states have internal predecessors, (389193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:58:29,233 INFO L175 Difference]: Start difference. First operand has 539 places, 583 transitions, 5970 flow. Second operand 1292 states and 109989 transitions. [2023-08-27 04:58:29,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1830 places, 7988 transitions, 94867 flow [2023-08-27 04:58:31,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1733 places, 7988 transitions, 91875 flow, removed 1065 selfloop flow, removed 97 redundant places. [2023-08-27 04:58:31,253 INFO L231 Difference]: Finished difference. Result has 1740 places, 3703 transitions, 44367 flow [2023-08-27 04:58:31,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=4636, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=480, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=1292, PETRI_FLOW=44367, PETRI_PLACES=1740, PETRI_TRANSITIONS=3703} [2023-08-27 04:58:31,254 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1708 predicate places. [2023-08-27 04:58:31,254 INFO L495 AbstractCegarLoop]: Abstraction has has 1740 places, 3703 transitions, 44367 flow [2023-08-27 04:58:31,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 216 states have (on average 83.17129629629629) internal successors, (17965), 216 states have internal predecessors, (17965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:58:31,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:58:31,257 INFO L208 CegarLoopForPetriNet]: trace histogram [100, 99, 97, 97, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:58:31,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-27 04:58:31,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:58:31,457 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 04:58:31,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:58:31,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1235489766, now seen corresponding path program 4 times [2023-08-27 04:58:31,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:58:31,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982855909] [2023-08-27 04:58:31,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:58:31,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:58:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:58:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 19515 backedges. 0 proven. 19515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:58:49,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:58:49,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982855909] [2023-08-27 04:58:49,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982855909] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 04:58:49,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26882609] [2023-08-27 04:58:49,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 04:58:49,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:58:49,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:58:49,033 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 04:58:49,035 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 04:58:50,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 04:58:50,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:58:50,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 3390 conjuncts, 201 conjunts are in the unsatisfiable core [2023-08-27 04:58:50,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:58:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 19515 backedges. 0 proven. 19515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:58:51,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:59:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 19515 backedges. 0 proven. 19515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:59:17,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26882609] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:59:17,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 04:59:17,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [201, 201, 201] total 403 [2023-08-27 04:59:17,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533130717] [2023-08-27 04:59:17,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 04:59:17,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 404 states [2023-08-27 04:59:17,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:59:17,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 404 interpolants. [2023-08-27 04:59:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41005, Invalid=121807, Unknown=0, NotChecked=0, Total=162812 [2023-08-27 04:59:17,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-27 04:59:17,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1740 places, 3703 transitions, 44367 flow. Second operand has 404 states, 404 states have (on average 128.07178217821783) internal successors, (51741), 404 states have internal predecessors, (51741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:59:17,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:59:17,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-27 04:59:17,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:03:12,342 INFO L124 PetriNetUnfolderBase]: 8432/25640 cut-off events. [2023-08-27 05:03:12,343 INFO L125 PetriNetUnfolderBase]: For 18309047/18309047 co-relation queries the response was YES. [2023-08-27 05:03:12,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171205 conditions, 25640 events. 8432/25640 cut-off events. For 18309047/18309047 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 116739 event pairs, 30 based on Foata normal form. 3333/28973 useless extension candidates. Maximal degree in co-relation 171054. Up to 6610 conditions per place. [2023-08-27 05:03:12,731 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 10582 selfloop transitions, 1193 changer transitions 2390/14166 dead transitions. [2023-08-27 05:03:12,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2141 places, 14166 transitions, 179500 flow [2023-08-27 05:03:12,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 402 states. [2023-08-27 05:03:12,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2023-08-27 05:03:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 55959 transitions. [2023-08-27 05:03:12,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46246343035652304 [2023-08-27 05:03:12,773 INFO L72 ComplementDD]: Start complementDD. Operand 402 states and 55959 transitions. [2023-08-27 05:03:12,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 402 states and 55959 transitions. [2023-08-27 05:03:12,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:03:12,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 402 states and 55959 transitions. [2023-08-27 05:03:12,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 403 states, 402 states have (on average 139.20149253731344) internal successors, (55959), 402 states have internal predecessors, (55959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:03:12,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 403 states, 403 states have (on average 301.0) internal successors, (121303), 403 states have internal predecessors, (121303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:03:12,946 INFO L81 ComplementDD]: Finished complementDD. Result has 403 states, 403 states have (on average 301.0) internal successors, (121303), 403 states have internal predecessors, (121303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:03:12,946 INFO L175 Difference]: Start difference. First operand has 1740 places, 3703 transitions, 44367 flow. Second operand 402 states and 55959 transitions. [2023-08-27 05:03:12,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2141 places, 14166 transitions, 179500 flow [2023-08-27 05:03:20,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1926 places, 14166 transitions, 159792 flow, removed 4898 selfloop flow, removed 215 redundant places. [2023-08-27 05:03:20,464 INFO L231 Difference]: Finished difference. Result has 2027 places, 4006 transitions, 41740 flow [2023-08-27 05:03:20,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=34601, PETRI_DIFFERENCE_MINUEND_PLACES=1525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=893, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=402, PETRI_FLOW=41740, PETRI_PLACES=2027, PETRI_TRANSITIONS=4006} [2023-08-27 05:03:20,469 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1995 predicate places. [2023-08-27 05:03:20,469 INFO L495 AbstractCegarLoop]: Abstraction has has 2027 places, 4006 transitions, 41740 flow [2023-08-27 05:03:20,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 404 states, 404 states have (on average 128.07178217821783) internal successors, (51741), 404 states have internal predecessors, (51741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:03:20,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:03:20,477 INFO L208 CegarLoopForPetriNet]: trace histogram [201, 200, 198, 198, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:03:20,495 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 05:03:20,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 05:03:20,692 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 05:03:20,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:03:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1826773936, now seen corresponding path program 5 times [2023-08-27 05:03:20,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:03:20,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950218780] [2023-08-27 05:03:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:03:20,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:03:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:04:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 79812 backedges. 0 proven. 79812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 05:04:43,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:04:43,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950218780] [2023-08-27 05:04:43,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950218780] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 05:04:43,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809726511] [2023-08-27 05:04:43,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 05:04:43,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 05:04:43,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:04:43,131 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 05:04:43,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process Received shutdown request... [2023-08-27 05:06:07,802 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 05:06:07,803 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 05:06:08,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-27 05:06:09,012 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2023-08-27 05:06:09,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 137 [2023-08-27 05:06:09,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 05:06:09,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-27 05:06:09,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [403] total 403 [2023-08-27 05:06:09,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505454163] [2023-08-27 05:06:09,022 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-27 05:06:09,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 404 states [2023-08-27 05:06:09,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:06:09,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 404 interpolants. [2023-08-27 05:06:09,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41005, Invalid=121807, Unknown=0, NotChecked=0, Total=162812 [2023-08-27 05:06:09,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-27 05:06:09,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2027 places, 4006 transitions, 41740 flow. Second operand has 404 states, 404 states have (on average 128.02970297029702) internal successors, (51724), 404 states have internal predecessors, (51724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:06:09,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:06:09,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-27 05:06:09,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:06:09,083 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-08-27 05:06:09,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 05:06:09,083 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-27 05:06:09,084 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-27 05:06:09,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-27 05:06:09,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-27 05:06:09,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-27 05:06:09,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr1ASSERT_VIOLATIONASSERT (7 of 13 remaining) [2023-08-27 05:06:09,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONASSERT (6 of 13 remaining) [2023-08-27 05:06:09,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-27 05:06:09,086 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-27 05:06:09,086 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr1ASSERT_VIOLATIONASSERT (3 of 13 remaining) [2023-08-27 05:06:09,086 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONASSERT (2 of 13 remaining) [2023-08-27 05:06:09,086 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-27 05:06:09,086 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-27 05:06:09,087 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:06:09,091 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 05:06:09,091 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 05:06:09,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:06:09 BasicIcfg [2023-08-27 05:06:09,094 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 05:06:09,094 INFO L158 Benchmark]: Toolchain (without parser) took 761635.94ms. Allocated memory was 335.5MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 310.7MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-08-27 05:06:09,094 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 335.5MB. Free memory is still 311.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 05:06:09,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.52ms. Allocated memory is still 335.5MB. Free memory was 310.7MB in the beginning and 290.8MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 05:06:09,095 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.19ms. Allocated memory is still 335.5MB. Free memory was 290.8MB in the beginning and 288.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 05:06:09,095 INFO L158 Benchmark]: Boogie Preprocessor took 47.36ms. Allocated memory is still 335.5MB. Free memory was 288.3MB in the beginning and 286.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 05:06:09,095 INFO L158 Benchmark]: RCFGBuilder took 420.23ms. Allocated memory is still 335.5MB. Free memory was 286.7MB in the beginning and 269.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 05:06:09,095 INFO L158 Benchmark]: TraceAbstraction took 760583.56ms. Allocated memory was 335.5MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 269.4MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2023-08-27 05:06:09,104 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 335.5MB. Free memory is still 311.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 514.52ms. Allocated memory is still 335.5MB. Free memory was 310.7MB in the beginning and 290.8MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 65.19ms. Allocated memory is still 335.5MB. Free memory was 290.8MB in the beginning and 288.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.36ms. Allocated memory is still 335.5MB. Free memory was 288.3MB in the beginning and 286.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 420.23ms. Allocated memory is still 335.5MB. Free memory was 286.7MB in the beginning and 269.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 760583.56ms. Allocated memory was 335.5MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 269.4MB in the beginning and 2.9GB in the end (delta: -2.6GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 140 PlacesBefore, 32 PlacesAfterwards, 148 TransitionsBefore, 34 TransitionsAfterwards, 5984 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 87 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 6 ChoiceCompositions, 152 TotalNumberOfCompositions, 8283 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5961, independent: 5779, independent conditional: 0, independent unconditional: 5779, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3546, independent: 3493, independent conditional: 0, independent unconditional: 3493, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5961, independent: 2286, independent conditional: 0, independent unconditional: 2286, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 3546, unknown conditional: 0, unknown unconditional: 3546] , Statistics on independence cache: Total cache size (in pairs): 156, Positive cache size: 136, Positive conditional cache size: 0, Positive unconditional cache size: 136, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 749]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 715]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 715]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 749]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 748]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 728]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 728]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 199 locations, 13 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: 760.4s, OverallIterations: 25, TraceHistogramMax: 201, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 487.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58756 SdHoareTripleChecker+Valid, 22.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58756 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 17.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 3019 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26103 IncrementalHoareTripleChecker+Invalid, 29123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3019 mSolverCounterUnsat, 1 mSDtfsCounter, 26103 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6595 GetRequests, 3151 SyntacticMatches, 2 SemanticMatches, 3442 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184327 ImplicationChecksByTransitivity, 270.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44367occurred in iteration=23, InterpolantAutomatonStates: 2303, 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: 0.7s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 173.3s InterpolantComputationTime, 3909 NumberOfCodeBlocks, 3469 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 5320 ConstructedInterpolants, 32 QuantifiedInterpolants, 27395 SizeOfPredicates, 343 NumberOfNonLiveVariables, 9431 ConjunctsInSsa, 805 ConjunctsInUnsatCore, 53 InterpolantComputations, 13 PerfectInterpolantSequences, 39578/216747 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