/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:33:06,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:33:06,628 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 00:33:06,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:33:06,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:33:06,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:33:06,666 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:33:06,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:33:06,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:33:06,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:33:06,670 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:33:06,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:33:06,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:33:06,672 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:33:06,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:33:06,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:33:06,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:33:06,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:33:06,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:33:06,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:33:06,673 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:33:06,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:33:06,674 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:33:06,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:33:06,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:33:06,675 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:33:06,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:33:06,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:33:06,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:33:06,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:33:06,677 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:33:06,677 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:33:06,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:33:06,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:33:06,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:33:06,678 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:33:06,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:33:06,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:33:06,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:33:06,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:33:06,999 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:33:07,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-27 00:33:08,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:33:08,392 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:33:08,392 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-27 00:33:08,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97321403/73792d89f7064eb5ba88ed103f1d8e53/FLAGf6393c18b [2023-08-27 00:33:08,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97321403/73792d89f7064eb5ba88ed103f1d8e53 [2023-08-27 00:33:08,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:33:08,416 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:33:08,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:33:08,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:33:08,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:33:08,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7101e95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08, skipping insertion in model container [2023-08-27 00:33:08,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,441 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:33:08,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:33:08,579 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:33:08,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:33:08,613 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:33:08,613 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:33:08,619 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:33:08,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08 WrapperNode [2023-08-27 00:33:08,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:33:08,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:33:08,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:33:08,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:33:08,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,687 INFO L138 Inliner]: procedures = 23, calls = 71, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 224 [2023-08-27 00:33:08,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:33:08,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:33:08,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:33:08,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:33:08,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:33:08,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:33:08,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:33:08,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:33:08,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (1/1) ... [2023-08-27 00:33:08,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:33:08,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:33:08,762 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 00:33:08,783 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 00:33:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:33:08,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:33:08,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:33:08,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:33:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:33:08,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:33:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:33:08,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 00:33:08,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 00:33:08,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:33:08,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:33:08,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:33:08,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:33:08,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:33:08,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:33:08,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:33:08,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:33:08,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:33:08,812 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 00:33:08,935 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:33:08,936 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:33:09,223 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:33:09,367 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:33:09,367 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 00:33:09,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:33:09 BoogieIcfgContainer [2023-08-27 00:33:09,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:33:09,371 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:33:09,371 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:33:09,374 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:33:09,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:33:08" (1/3) ... [2023-08-27 00:33:09,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f0af87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:33:09, skipping insertion in model container [2023-08-27 00:33:09,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:33:08" (2/3) ... [2023-08-27 00:33:09,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f0af87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:33:09, skipping insertion in model container [2023-08-27 00:33:09,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:33:09" (3/3) ... [2023-08-27 00:33:09,376 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-08-27 00:33:09,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:33:09,391 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-27 00:33:09,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:33:09,501 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 00:33:09,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 160 transitions, 352 flow [2023-08-27 00:33:09,590 INFO L124 PetriNetUnfolderBase]: 2/156 cut-off events. [2023-08-27 00:33:09,591 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:33:09,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 156 events. 2/156 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2023-08-27 00:33:09,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 160 transitions, 352 flow [2023-08-27 00:33:09,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 143 transitions, 310 flow [2023-08-27 00:33:09,602 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:33:09,611 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 143 transitions, 310 flow [2023-08-27 00:33:09,613 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 143 transitions, 310 flow [2023-08-27 00:33:09,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 143 transitions, 310 flow [2023-08-27 00:33:09,645 INFO L124 PetriNetUnfolderBase]: 2/143 cut-off events. [2023-08-27 00:33:09,645 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:33:09,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 143 events. 2/143 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2023-08-27 00:33:09,648 INFO L119 LiptonReduction]: Number of co-enabled transitions 2622 [2023-08-27 00:33:14,243 INFO L134 LiptonReduction]: Checked pairs total: 16377 [2023-08-27 00:33:14,244 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-27 00:33:14,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:33:14,262 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;@2a4aa66d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:33:14,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-27 00:33:14,264 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:33:14,264 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-08-27 00:33:14,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:33:14,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:14,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:33:14,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:14,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash 654796, now seen corresponding path program 1 times [2023-08-27 00:33:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:14,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077504628] [2023-08-27 00:33:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:14,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:14,630 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 00:33:14,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:14,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077504628] [2023-08-27 00:33:14,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077504628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:14,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:14,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:33:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273550974] [2023-08-27 00:33:14,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:14,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:33:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:14,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:33:14,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:33:14,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 00:33:14,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:14,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:14,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 00:33:14,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:16,695 INFO L124 PetriNetUnfolderBase]: 17952/25211 cut-off events. [2023-08-27 00:33:16,695 INFO L125 PetriNetUnfolderBase]: For 1328/1328 co-relation queries the response was YES. [2023-08-27 00:33:16,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50770 conditions, 25211 events. 17952/25211 cut-off events. For 1328/1328 co-relation queries the response was YES. Maximal size of possible extension queue 1686. Compared 169336 event pairs, 17952 based on Foata normal form. 0/14863 useless extension candidates. Maximal degree in co-relation 44870. Up to 24353 conditions per place. [2023-08-27 00:33:16,872 INFO L140 encePairwiseOnDemand]: 257/262 looper letters, 40 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-27 00:33:16,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 198 flow [2023-08-27 00:33:16,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:33:16,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:33:16,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-27 00:33:16,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076335877862596 [2023-08-27 00:33:16,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-27 00:33:16,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-27 00:33:16,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:16,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-27 00:33:16,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:16,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:16,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:16,898 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 124 flow. Second operand 3 states and 399 transitions. [2023-08-27 00:33:16,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 198 flow [2023-08-27 00:33:16,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 46 transitions, 182 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 00:33:16,919 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 102 flow [2023-08-27 00:33:16,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-08-27 00:33:16,924 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -10 predicate places. [2023-08-27 00:33:16,924 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 102 flow [2023-08-27 00:33:16,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:16,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:16,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:33:16,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:33:16,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:16,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:16,933 INFO L85 PathProgramCache]: Analyzing trace with hash 654797, now seen corresponding path program 1 times [2023-08-27 00:33:16,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:16,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339400990] [2023-08-27 00:33:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:16,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:17,075 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 00:33:17,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:17,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339400990] [2023-08-27 00:33:17,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339400990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:17,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:17,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:33:17,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669691315] [2023-08-27 00:33:17,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:17,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:33:17,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:17,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:33:17,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:33:17,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 00:33:17,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:17,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:17,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 00:33:17,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:18,707 INFO L124 PetriNetUnfolderBase]: 17791/25080 cut-off events. [2023-08-27 00:33:18,708 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2023-08-27 00:33:18,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49613 conditions, 25080 events. 17791/25080 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 1686. Compared 170561 event pairs, 13626 based on Foata normal form. 0/14978 useless extension candidates. Maximal degree in co-relation 49607. Up to 24132 conditions per place. [2023-08-27 00:33:18,830 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 47 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2023-08-27 00:33:18,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 231 flow [2023-08-27 00:33:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:33:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:33:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-08-27 00:33:18,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216284987277354 [2023-08-27 00:33:18,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-08-27 00:33:18,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-08-27 00:33:18,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:18,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-08-27 00:33:18,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:18,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:18,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:18,840 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 102 flow. Second operand 3 states and 410 transitions. [2023-08-27 00:33:18,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 231 flow [2023-08-27 00:33:18,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:33:18,843 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 140 flow [2023-08-27 00:33:18,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-27 00:33:18,844 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-08-27 00:33:18,845 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 140 flow [2023-08-27 00:33:18,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:18,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:18,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:33:18,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:33:18,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:18,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:18,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1963384374, now seen corresponding path program 1 times [2023-08-27 00:33:18,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:18,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064744648] [2023-08-27 00:33:18,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:18,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:18,983 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 00:33:18,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:18,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064744648] [2023-08-27 00:33:18,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064744648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:18,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:18,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:33:18,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612160657] [2023-08-27 00:33:18,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:18,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:33:18,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:18,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:33:18,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:33:18,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 00:33:18,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:18,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:18,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 00:33:18,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:20,610 INFO L124 PetriNetUnfolderBase]: 16537/23462 cut-off events. [2023-08-27 00:33:20,611 INFO L125 PetriNetUnfolderBase]: For 2419/2419 co-relation queries the response was YES. [2023-08-27 00:33:20,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51830 conditions, 23462 events. 16537/23462 cut-off events. For 2419/2419 co-relation queries the response was YES. Maximal size of possible extension queue 1662. Compared 162193 event pairs, 7312 based on Foata normal form. 0/14136 useless extension candidates. Maximal degree in co-relation 51822. Up to 22292 conditions per place. [2023-08-27 00:33:20,711 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 70 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2023-08-27 00:33:20,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 380 flow [2023-08-27 00:33:20,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:33:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:33:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 555 transitions. [2023-08-27 00:33:20,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295801526717557 [2023-08-27 00:33:20,713 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 555 transitions. [2023-08-27 00:33:20,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 555 transitions. [2023-08-27 00:33:20,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:20,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 555 transitions. [2023-08-27 00:33:20,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:20,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:20,718 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:20,718 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 140 flow. Second operand 4 states and 555 transitions. [2023-08-27 00:33:20,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 380 flow [2023-08-27 00:33:20,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:33:20,720 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 193 flow [2023-08-27 00:33:20,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-08-27 00:33:20,721 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-08-27 00:33:20,721 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 193 flow [2023-08-27 00:33:20,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:20,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:20,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:20,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 00:33:20,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:20,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:20,722 INFO L85 PathProgramCache]: Analyzing trace with hash -855846064, now seen corresponding path program 1 times [2023-08-27 00:33:20,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:20,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059023170] [2023-08-27 00:33:20,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:20,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:20,785 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 00:33:20,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059023170] [2023-08-27 00:33:20,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059023170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:20,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:20,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:33:20,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586824099] [2023-08-27 00:33:20,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:20,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:33:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:20,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:33:20,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:33:20,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 00:33:20,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:20,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:20,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 00:33:20,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:21,573 INFO L124 PetriNetUnfolderBase]: 8608/12362 cut-off events. [2023-08-27 00:33:21,573 INFO L125 PetriNetUnfolderBase]: For 4290/4290 co-relation queries the response was YES. [2023-08-27 00:33:21,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31345 conditions, 12362 events. 8608/12362 cut-off events. For 4290/4290 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 78694 event pairs, 7616 based on Foata normal form. 0/8600 useless extension candidates. Maximal degree in co-relation 31335. Up to 11857 conditions per place. [2023-08-27 00:33:21,625 INFO L140 encePairwiseOnDemand]: 257/262 looper letters, 44 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-08-27 00:33:21,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 275 flow [2023-08-27 00:33:21,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:33:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:33:21,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-08-27 00:33:21,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025445292620865 [2023-08-27 00:33:21,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-08-27 00:33:21,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-08-27 00:33:21,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:21,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-08-27 00:33:21,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:21,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:21,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:21,630 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 193 flow. Second operand 3 states and 395 transitions. [2023-08-27 00:33:21,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 275 flow [2023-08-27 00:33:21,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 257 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 00:33:21,633 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 169 flow [2023-08-27 00:33:21,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-08-27 00:33:21,634 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -9 predicate places. [2023-08-27 00:33:21,634 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 169 flow [2023-08-27 00:33:21,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:21,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:21,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:21,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 00:33:21,635 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:21,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:21,635 INFO L85 PathProgramCache]: Analyzing trace with hash -855846063, now seen corresponding path program 1 times [2023-08-27 00:33:21,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:21,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571100965] [2023-08-27 00:33:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:21,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:21,725 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 00:33:21,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571100965] [2023-08-27 00:33:21,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571100965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:21,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:21,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:33:21,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051930965] [2023-08-27 00:33:21,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:21,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:33:21,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:21,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:33:21,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:33:21,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 00:33:21,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:21,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:21,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 00:33:21,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:22,206 INFO L124 PetriNetUnfolderBase]: 5879/8480 cut-off events. [2023-08-27 00:33:22,207 INFO L125 PetriNetUnfolderBase]: For 3476/3476 co-relation queries the response was YES. [2023-08-27 00:33:22,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21812 conditions, 8480 events. 5879/8480 cut-off events. For 3476/3476 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 46924 event pairs, 1590 based on Foata normal form. 0/6241 useless extension candidates. Maximal degree in co-relation 21802. Up to 6830 conditions per place. [2023-08-27 00:33:22,244 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 67 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2023-08-27 00:33:22,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 410 flow [2023-08-27 00:33:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:33:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:33:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-08-27 00:33:22,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318066157760815 [2023-08-27 00:33:22,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-08-27 00:33:22,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-08-27 00:33:22,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:22,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-08-27 00:33:22,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:22,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:22,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:22,250 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 169 flow. Second operand 3 states and 418 transitions. [2023-08-27 00:33:22,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 410 flow [2023-08-27 00:33:22,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:33:22,253 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 207 flow [2023-08-27 00:33:22,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2023-08-27 00:33:22,253 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -7 predicate places. [2023-08-27 00:33:22,254 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 207 flow [2023-08-27 00:33:22,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:22,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:22,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:22,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 00:33:22,254 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:22,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:22,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1579539956, now seen corresponding path program 1 times [2023-08-27 00:33:22,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:22,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159014412] [2023-08-27 00:33:22,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:22,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:22,342 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 00:33:22,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:22,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159014412] [2023-08-27 00:33:22,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159014412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:22,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:22,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:33:22,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936238632] [2023-08-27 00:33:22,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:22,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:33:22,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:22,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:33:22,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:33:22,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 00:33:22,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:22,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:22,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 00:33:22,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:22,769 INFO L124 PetriNetUnfolderBase]: 4421/6712 cut-off events. [2023-08-27 00:33:22,769 INFO L125 PetriNetUnfolderBase]: For 3321/3321 co-relation queries the response was YES. [2023-08-27 00:33:22,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18623 conditions, 6712 events. 4421/6712 cut-off events. For 3321/3321 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 41218 event pairs, 786 based on Foata normal form. 0/5294 useless extension candidates. Maximal degree in co-relation 18611. Up to 5606 conditions per place. [2023-08-27 00:33:22,794 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 85 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2023-08-27 00:33:22,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 103 transitions, 566 flow [2023-08-27 00:33:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:33:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:33:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2023-08-27 00:33:22,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221374045801527 [2023-08-27 00:33:22,796 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2023-08-27 00:33:22,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2023-08-27 00:33:22,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:22,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2023-08-27 00:33:22,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:22,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:22,802 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:22,802 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 207 flow. Second operand 5 states and 684 transitions. [2023-08-27 00:33:22,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 103 transitions, 566 flow [2023-08-27 00:33:22,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:33:22,807 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 276 flow [2023-08-27 00:33:22,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-08-27 00:33:22,808 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-08-27 00:33:22,808 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 276 flow [2023-08-27 00:33:22,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:22,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:22,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:22,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 00:33:22,809 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:22,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:22,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1596062011, now seen corresponding path program 1 times [2023-08-27 00:33:22,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:22,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651614143] [2023-08-27 00:33:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:22,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:22,891 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 00:33:22,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:22,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651614143] [2023-08-27 00:33:22,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651614143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:22,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:22,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 00:33:22,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638316674] [2023-08-27 00:33:22,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:22,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:33:22,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:22,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:33:22,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:33:22,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 00:33:22,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:22,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:22,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 00:33:22,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:23,227 INFO L124 PetriNetUnfolderBase]: 3275/5072 cut-off events. [2023-08-27 00:33:23,227 INFO L125 PetriNetUnfolderBase]: For 5442/5442 co-relation queries the response was YES. [2023-08-27 00:33:23,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14885 conditions, 5072 events. 3275/5072 cut-off events. For 5442/5442 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 30209 event pairs, 26 based on Foata normal form. 0/4348 useless extension candidates. Maximal degree in co-relation 14871. Up to 2194 conditions per place. [2023-08-27 00:33:23,246 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 100 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2023-08-27 00:33:23,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 122 transitions, 682 flow [2023-08-27 00:33:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:33:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:33:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 817 transitions. [2023-08-27 00:33:23,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197201017811705 [2023-08-27 00:33:23,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 817 transitions. [2023-08-27 00:33:23,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 817 transitions. [2023-08-27 00:33:23,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:23,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 817 transitions. [2023-08-27 00:33:23,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:23,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:23,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:23,255 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 276 flow. Second operand 6 states and 817 transitions. [2023-08-27 00:33:23,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 122 transitions, 682 flow [2023-08-27 00:33:23,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 122 transitions, 648 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 00:33:23,262 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 244 flow [2023-08-27 00:33:23,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-08-27 00:33:23,263 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-08-27 00:33:23,263 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 244 flow [2023-08-27 00:33:23,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:23,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:23,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:23,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 00:33:23,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:23,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1552013878, now seen corresponding path program 1 times [2023-08-27 00:33:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:23,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165243543] [2023-08-27 00:33:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:23,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:23,373 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 00:33:23,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:23,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165243543] [2023-08-27 00:33:23,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165243543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:23,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:23,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:33:23,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328986781] [2023-08-27 00:33:23,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:23,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:33:23,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:23,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:33:23,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:33:23,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 00:33:23,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:23,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:23,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 00:33:23,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:23,694 INFO L124 PetriNetUnfolderBase]: 2225/3331 cut-off events. [2023-08-27 00:33:23,694 INFO L125 PetriNetUnfolderBase]: For 5068/5068 co-relation queries the response was YES. [2023-08-27 00:33:23,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9993 conditions, 3331 events. 2225/3331 cut-off events. For 5068/5068 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15808 event pairs, 400 based on Foata normal form. 0/3134 useless extension candidates. Maximal degree in co-relation 9979. Up to 1380 conditions per place. [2023-08-27 00:33:23,711 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 86 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2023-08-27 00:33:23,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 660 flow [2023-08-27 00:33:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:33:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:33:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 547 transitions. [2023-08-27 00:33:23,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219465648854962 [2023-08-27 00:33:23,716 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 547 transitions. [2023-08-27 00:33:23,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 547 transitions. [2023-08-27 00:33:23,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:23,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 547 transitions. [2023-08-27 00:33:23,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:23,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:23,721 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:23,721 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 244 flow. Second operand 4 states and 547 transitions. [2023-08-27 00:33:23,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 660 flow [2023-08-27 00:33:23,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 100 transitions, 501 flow, removed 36 selfloop flow, removed 7 redundant places. [2023-08-27 00:33:23,730 INFO L231 Difference]: Finished difference. Result has 55 places, 58 transitions, 231 flow [2023-08-27 00:33:23,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=55, PETRI_TRANSITIONS=58} [2023-08-27 00:33:23,732 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-08-27 00:33:23,732 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 58 transitions, 231 flow [2023-08-27 00:33:23,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:23,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:23,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:23,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 00:33:23,733 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:23,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1462622383, now seen corresponding path program 1 times [2023-08-27 00:33:23,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:23,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079893099] [2023-08-27 00:33:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:23,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:23,891 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 00:33:23,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:23,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079893099] [2023-08-27 00:33:23,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079893099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:23,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:23,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:33:23,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156893743] [2023-08-27 00:33:23,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:23,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:33:23,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:23,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:33:23,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:33:23,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 00:33:23,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 58 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:23,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:23,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 00:33:23,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:24,170 INFO L124 PetriNetUnfolderBase]: 1981/2941 cut-off events. [2023-08-27 00:33:24,170 INFO L125 PetriNetUnfolderBase]: For 2600/2600 co-relation queries the response was YES. [2023-08-27 00:33:24,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8174 conditions, 2941 events. 1981/2941 cut-off events. For 2600/2600 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 13445 event pairs, 324 based on Foata normal form. 0/2910 useless extension candidates. Maximal degree in co-relation 8162. Up to 1134 conditions per place. [2023-08-27 00:33:24,184 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 101 selfloop transitions, 13 changer transitions 0/119 dead transitions. [2023-08-27 00:33:24,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 119 transitions, 642 flow [2023-08-27 00:33:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:33:24,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:33:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2023-08-27 00:33:24,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221374045801527 [2023-08-27 00:33:24,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2023-08-27 00:33:24,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2023-08-27 00:33:24,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:24,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2023-08-27 00:33:24,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:24,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:24,192 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:24,192 INFO L175 Difference]: Start difference. First operand has 55 places, 58 transitions, 231 flow. Second operand 5 states and 684 transitions. [2023-08-27 00:33:24,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 119 transitions, 642 flow [2023-08-27 00:33:24,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 119 transitions, 624 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 00:33:24,197 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 287 flow [2023-08-27 00:33:24,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2023-08-27 00:33:24,198 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-08-27 00:33:24,198 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 287 flow [2023-08-27 00:33:24,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:24,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:24,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:24,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 00:33:24,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:24,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:24,199 INFO L85 PathProgramCache]: Analyzing trace with hash -84300853, now seen corresponding path program 1 times [2023-08-27 00:33:24,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:24,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304021154] [2023-08-27 00:33:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:24,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:24,317 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 00:33:24,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:24,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304021154] [2023-08-27 00:33:24,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304021154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:24,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:24,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 00:33:24,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105014069] [2023-08-27 00:33:24,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:24,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:33:24,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:24,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:33:24,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:33:24,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 00:33:24,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:24,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:24,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 00:33:24,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:24,610 INFO L124 PetriNetUnfolderBase]: 1965/2905 cut-off events. [2023-08-27 00:33:24,610 INFO L125 PetriNetUnfolderBase]: For 3168/3168 co-relation queries the response was YES. [2023-08-27 00:33:24,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8309 conditions, 2905 events. 1965/2905 cut-off events. For 3168/3168 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 13217 event pairs, 320 based on Foata normal form. 0/2894 useless extension candidates. Maximal degree in co-relation 8296. Up to 1134 conditions per place. [2023-08-27 00:33:24,622 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 100 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2023-08-27 00:33:24,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 122 transitions, 665 flow [2023-08-27 00:33:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:33:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:33:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 805 transitions. [2023-08-27 00:33:24,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120865139949109 [2023-08-27 00:33:24,624 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 805 transitions. [2023-08-27 00:33:24,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 805 transitions. [2023-08-27 00:33:24,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:24,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 805 transitions. [2023-08-27 00:33:24,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:24,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:24,630 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:24,630 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 287 flow. Second operand 6 states and 805 transitions. [2023-08-27 00:33:24,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 122 transitions, 665 flow [2023-08-27 00:33:24,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 631 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 00:33:24,659 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 255 flow [2023-08-27 00:33:24,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-08-27 00:33:24,660 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -7 predicate places. [2023-08-27 00:33:24,660 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 255 flow [2023-08-27 00:33:24,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:24,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:24,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:24,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 00:33:24,665 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:24,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:24,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1755169302, now seen corresponding path program 1 times [2023-08-27 00:33:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:24,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601872952] [2023-08-27 00:33:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:24,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:24,975 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 00:33:24,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:24,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601872952] [2023-08-27 00:33:24,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601872952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:24,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:24,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 00:33:24,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489355469] [2023-08-27 00:33:24,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:24,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:33:24,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:24,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:33:24,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:33:24,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:24,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:24,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:24,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:24,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:25,441 INFO L124 PetriNetUnfolderBase]: 3724/6079 cut-off events. [2023-08-27 00:33:25,442 INFO L125 PetriNetUnfolderBase]: For 7858/7858 co-relation queries the response was YES. [2023-08-27 00:33:25,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16539 conditions, 6079 events. 3724/6079 cut-off events. For 7858/7858 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 38152 event pairs, 715 based on Foata normal form. 164/6225 useless extension candidates. Maximal degree in co-relation 16526. Up to 2180 conditions per place. [2023-08-27 00:33:25,473 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 95 selfloop transitions, 57 changer transitions 0/157 dead transitions. [2023-08-27 00:33:25,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 157 transitions, 981 flow [2023-08-27 00:33:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:33:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:33:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 666 transitions. [2023-08-27 00:33:25,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083969465648855 [2023-08-27 00:33:25,476 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 666 transitions. [2023-08-27 00:33:25,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 666 transitions. [2023-08-27 00:33:25,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:25,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 666 transitions. [2023-08-27 00:33:25,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:25,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:25,480 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:25,480 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 255 flow. Second operand 5 states and 666 transitions. [2023-08-27 00:33:25,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 157 transitions, 981 flow [2023-08-27 00:33:25,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 157 transitions, 792 flow, removed 36 selfloop flow, removed 7 redundant places. [2023-08-27 00:33:25,504 INFO L231 Difference]: Finished difference. Result has 55 places, 101 transitions, 563 flow [2023-08-27 00:33:25,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=563, PETRI_PLACES=55, PETRI_TRANSITIONS=101} [2023-08-27 00:33:25,505 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-08-27 00:33:25,505 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 101 transitions, 563 flow [2023-08-27 00:33:25,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:25,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:25,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:25,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 00:33:25,506 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:25,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1298576594, now seen corresponding path program 2 times [2023-08-27 00:33:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:25,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519378691] [2023-08-27 00:33:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:25,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:25,691 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 00:33:25,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:25,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519378691] [2023-08-27 00:33:25,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519378691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:25,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:25,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 00:33:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540371431] [2023-08-27 00:33:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:25,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:33:25,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:25,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:33:25,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:33:25,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:25,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 101 transitions, 563 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:25,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:25,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:25,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:26,440 INFO L124 PetriNetUnfolderBase]: 4579/8038 cut-off events. [2023-08-27 00:33:26,440 INFO L125 PetriNetUnfolderBase]: For 10782/11032 co-relation queries the response was YES. [2023-08-27 00:33:26,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22885 conditions, 8038 events. 4579/8038 cut-off events. For 10782/11032 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 58501 event pairs, 512 based on Foata normal form. 502/8502 useless extension candidates. Maximal degree in co-relation 22873. Up to 2564 conditions per place. [2023-08-27 00:33:26,491 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 116 selfloop transitions, 152 changer transitions 0/273 dead transitions. [2023-08-27 00:33:26,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 273 transitions, 1906 flow [2023-08-27 00:33:26,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:33:26,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:33:26,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1059 transitions. [2023-08-27 00:33:26,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052480916030534 [2023-08-27 00:33:26,495 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1059 transitions. [2023-08-27 00:33:26,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1059 transitions. [2023-08-27 00:33:26,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:26,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1059 transitions. [2023-08-27 00:33:26,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.375) internal successors, (1059), 8 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 00:33:26,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:26,501 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:26,502 INFO L175 Difference]: Start difference. First operand has 55 places, 101 transitions, 563 flow. Second operand 8 states and 1059 transitions. [2023-08-27 00:33:26,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 273 transitions, 1906 flow [2023-08-27 00:33:26,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 273 transitions, 1906 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 00:33:26,511 INFO L231 Difference]: Finished difference. Result has 67 places, 189 transitions, 1722 flow [2023-08-27 00:33:26,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1722, PETRI_PLACES=67, PETRI_TRANSITIONS=189} [2023-08-27 00:33:26,512 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2023-08-27 00:33:26,512 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 189 transitions, 1722 flow [2023-08-27 00:33:26,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:26,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:26,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:26,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 00:33:26,513 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:26,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash 506857082, now seen corresponding path program 3 times [2023-08-27 00:33:26,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:26,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461245215] [2023-08-27 00:33:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:26,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:26,715 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 00:33:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461245215] [2023-08-27 00:33:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461245215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:26,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:26,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 00:33:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624855685] [2023-08-27 00:33:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:33:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:33:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:33:26,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:26,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 189 transitions, 1722 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:26,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:26,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:26,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:27,585 INFO L124 PetriNetUnfolderBase]: 4680/8333 cut-off events. [2023-08-27 00:33:27,586 INFO L125 PetriNetUnfolderBase]: For 30149/30713 co-relation queries the response was YES. [2023-08-27 00:33:27,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30902 conditions, 8333 events. 4680/8333 cut-off events. For 30149/30713 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 61856 event pairs, 427 based on Foata normal form. 276/8581 useless extension candidates. Maximal degree in co-relation 30883. Up to 2528 conditions per place. [2023-08-27 00:33:27,634 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 92 selfloop transitions, 223 changer transitions 0/320 dead transitions. [2023-08-27 00:33:27,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 320 transitions, 3170 flow [2023-08-27 00:33:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:33:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:33:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1044 transitions. [2023-08-27 00:33:27,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49809160305343514 [2023-08-27 00:33:27,638 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1044 transitions. [2023-08-27 00:33:27,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1044 transitions. [2023-08-27 00:33:27,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:27,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1044 transitions. [2023-08-27 00:33:27,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.5) internal successors, (1044), 8 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:27,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:27,645 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:27,645 INFO L175 Difference]: Start difference. First operand has 67 places, 189 transitions, 1722 flow. Second operand 8 states and 1044 transitions. [2023-08-27 00:33:27,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 320 transitions, 3170 flow [2023-08-27 00:33:27,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 320 transitions, 3152 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-27 00:33:27,688 INFO L231 Difference]: Finished difference. Result has 76 places, 253 transitions, 2934 flow [2023-08-27 00:33:27,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2934, PETRI_PLACES=76, PETRI_TRANSITIONS=253} [2023-08-27 00:33:27,689 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2023-08-27 00:33:27,689 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 253 transitions, 2934 flow [2023-08-27 00:33:27,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:27,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:27,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:27,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 00:33:27,690 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:27,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1828387914, now seen corresponding path program 4 times [2023-08-27 00:33:27,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:27,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384586759] [2023-08-27 00:33:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:27,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:28,126 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 00:33:28,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:28,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384586759] [2023-08-27 00:33:28,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384586759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:28,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:28,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 00:33:28,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464910541] [2023-08-27 00:33:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:28,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:33:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:33:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:33:28,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 262 [2023-08-27 00:33:28,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 253 transitions, 2934 flow. Second operand has 6 states, 6 states have (on average 115.66666666666667) internal successors, (694), 6 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:28,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:28,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 262 [2023-08-27 00:33:28,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:30,230 INFO L124 PetriNetUnfolderBase]: 16031/24466 cut-off events. [2023-08-27 00:33:30,231 INFO L125 PetriNetUnfolderBase]: For 123281/123281 co-relation queries the response was YES. [2023-08-27 00:33:30,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101080 conditions, 24466 events. 16031/24466 cut-off events. For 123281/123281 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 163109 event pairs, 4246 based on Foata normal form. 4/24470 useless extension candidates. Maximal degree in co-relation 101057. Up to 12311 conditions per place. [2023-08-27 00:33:30,363 INFO L140 encePairwiseOnDemand]: 255/262 looper letters, 413 selfloop transitions, 12 changer transitions 175/600 dead transitions. [2023-08-27 00:33:30,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 600 transitions, 7926 flow [2023-08-27 00:33:30,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:33:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:33:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 775 transitions. [2023-08-27 00:33:30,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49300254452926207 [2023-08-27 00:33:30,367 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 775 transitions. [2023-08-27 00:33:30,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 775 transitions. [2023-08-27 00:33:30,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:30,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 775 transitions. [2023-08-27 00:33:30,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 129.16666666666666) internal successors, (775), 6 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:30,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:30,372 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:30,372 INFO L175 Difference]: Start difference. First operand has 76 places, 253 transitions, 2934 flow. Second operand 6 states and 775 transitions. [2023-08-27 00:33:30,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 600 transitions, 7926 flow [2023-08-27 00:33:30,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 600 transitions, 7781 flow, removed 68 selfloop flow, removed 1 redundant places. [2023-08-27 00:33:30,705 INFO L231 Difference]: Finished difference. Result has 83 places, 238 transitions, 2611 flow [2023-08-27 00:33:30,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2611, PETRI_PLACES=83, PETRI_TRANSITIONS=238} [2023-08-27 00:33:30,705 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 20 predicate places. [2023-08-27 00:33:30,706 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 238 transitions, 2611 flow [2023-08-27 00:33:30,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.66666666666667) internal successors, (694), 6 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:30,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:30,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:30,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 00:33:30,706 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:30,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:30,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1731738668, now seen corresponding path program 5 times [2023-08-27 00:33:30,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:30,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700050663] [2023-08-27 00:33:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:30,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:30,891 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 00:33:30,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:30,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700050663] [2023-08-27 00:33:30,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700050663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:30,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:30,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 00:33:30,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399288681] [2023-08-27 00:33:30,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:30,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:33:30,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:30,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:33:30,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:33:30,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:30,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 238 transitions, 2611 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:30,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:30,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:30,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:31,942 INFO L124 PetriNetUnfolderBase]: 4485/8273 cut-off events. [2023-08-27 00:33:31,942 INFO L125 PetriNetUnfolderBase]: For 44920/45970 co-relation queries the response was YES. [2023-08-27 00:33:31,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37006 conditions, 8273 events. 4485/8273 cut-off events. For 44920/45970 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 64330 event pairs, 475 based on Foata normal form. 802/8924 useless extension candidates. Maximal degree in co-relation 36979. Up to 2516 conditions per place. [2023-08-27 00:33:31,986 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 85 selfloop transitions, 228 changer transitions 7/338 dead transitions. [2023-08-27 00:33:31,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 338 transitions, 3929 flow [2023-08-27 00:33:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:33:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:33:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1041 transitions. [2023-08-27 00:33:31,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49666030534351147 [2023-08-27 00:33:31,989 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1041 transitions. [2023-08-27 00:33:31,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1041 transitions. [2023-08-27 00:33:31,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:31,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1041 transitions. [2023-08-27 00:33:31,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.125) internal successors, (1041), 8 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:31,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:31,994 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:31,994 INFO L175 Difference]: Start difference. First operand has 83 places, 238 transitions, 2611 flow. Second operand 8 states and 1041 transitions. [2023-08-27 00:33:31,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 338 transitions, 3929 flow [2023-08-27 00:33:32,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 338 transitions, 3921 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 00:33:32,069 INFO L231 Difference]: Finished difference. Result has 91 places, 270 transitions, 3541 flow [2023-08-27 00:33:32,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3541, PETRI_PLACES=91, PETRI_TRANSITIONS=270} [2023-08-27 00:33:32,070 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 28 predicate places. [2023-08-27 00:33:32,070 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 270 transitions, 3541 flow [2023-08-27 00:33:32,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:32,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:32,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:32,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 00:33:32,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:32,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash 199188454, now seen corresponding path program 6 times [2023-08-27 00:33:32,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:32,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770138353] [2023-08-27 00:33:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:32,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:32,259 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 00:33:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770138353] [2023-08-27 00:33:32,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770138353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:32,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:33:32,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754125463] [2023-08-27 00:33:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:32,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 00:33:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 00:33:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:33:32,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:32,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 270 transitions, 3541 flow. Second operand has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:32,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:32,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:32,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:33,294 INFO L124 PetriNetUnfolderBase]: 4491/8257 cut-off events. [2023-08-27 00:33:33,294 INFO L125 PetriNetUnfolderBase]: For 60269/61781 co-relation queries the response was YES. [2023-08-27 00:33:33,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41064 conditions, 8257 events. 4491/8257 cut-off events. For 60269/61781 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 64057 event pairs, 535 based on Foata normal form. 706/8815 useless extension candidates. Maximal degree in co-relation 41034. Up to 2738 conditions per place. [2023-08-27 00:33:33,334 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 89 selfloop transitions, 249 changer transitions 1/357 dead transitions. [2023-08-27 00:33:33,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 357 transitions, 4812 flow [2023-08-27 00:33:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 00:33:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 00:33:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1154 transitions. [2023-08-27 00:33:33,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893977947413062 [2023-08-27 00:33:33,337 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1154 transitions. [2023-08-27 00:33:33,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1154 transitions. [2023-08-27 00:33:33,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:33,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1154 transitions. [2023-08-27 00:33:33,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.22222222222223) internal successors, (1154), 9 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:33,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:33,343 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:33,343 INFO L175 Difference]: Start difference. First operand has 91 places, 270 transitions, 3541 flow. Second operand 9 states and 1154 transitions. [2023-08-27 00:33:33,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 357 transitions, 4812 flow [2023-08-27 00:33:33,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 357 transitions, 4591 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 00:33:33,443 INFO L231 Difference]: Finished difference. Result has 97 places, 291 transitions, 4177 flow [2023-08-27 00:33:33,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3325, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4177, PETRI_PLACES=97, PETRI_TRANSITIONS=291} [2023-08-27 00:33:33,444 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 34 predicate places. [2023-08-27 00:33:33,444 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 291 transitions, 4177 flow [2023-08-27 00:33:33,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:33,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:33,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:33,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 00:33:33,445 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:33,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash -378146148, now seen corresponding path program 7 times [2023-08-27 00:33:33,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:33,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214770986] [2023-08-27 00:33:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:33,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:33,579 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 00:33:33,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:33,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214770986] [2023-08-27 00:33:33,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214770986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:33,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:33,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 00:33:33,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153891184] [2023-08-27 00:33:33,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:33,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:33:33,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:33,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:33:33,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:33:33,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:33,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 291 transitions, 4177 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:33,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:33,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:33,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:34,187 INFO L124 PetriNetUnfolderBase]: 2636/5313 cut-off events. [2023-08-27 00:33:34,187 INFO L125 PetriNetUnfolderBase]: For 46351/46967 co-relation queries the response was YES. [2023-08-27 00:33:34,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27084 conditions, 5313 events. 2636/5313 cut-off events. For 46351/46967 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 40686 event pairs, 589 based on Foata normal form. 536/5767 useless extension candidates. Maximal degree in co-relation 27053. Up to 1586 conditions per place. [2023-08-27 00:33:34,231 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 127 selfloop transitions, 146 changer transitions 27/314 dead transitions. [2023-08-27 00:33:34,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 314 transitions, 4723 flow [2023-08-27 00:33:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:33:34,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:33:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 656 transitions. [2023-08-27 00:33:34,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.500763358778626 [2023-08-27 00:33:34,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 656 transitions. [2023-08-27 00:33:34,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 656 transitions. [2023-08-27 00:33:34,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:34,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 656 transitions. [2023-08-27 00:33:34,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.2) internal successors, (656), 5 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:34,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:34,238 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:34,238 INFO L175 Difference]: Start difference. First operand has 97 places, 291 transitions, 4177 flow. Second operand 5 states and 656 transitions. [2023-08-27 00:33:34,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 314 transitions, 4723 flow [2023-08-27 00:33:34,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 314 transitions, 4512 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 00:33:34,334 INFO L231 Difference]: Finished difference. Result has 98 places, 249 transitions, 3750 flow [2023-08-27 00:33:34,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3750, PETRI_PLACES=98, PETRI_TRANSITIONS=249} [2023-08-27 00:33:34,334 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 35 predicate places. [2023-08-27 00:33:34,335 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 249 transitions, 3750 flow [2023-08-27 00:33:34,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:34,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:34,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:34,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 00:33:34,335 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:34,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1666904420, now seen corresponding path program 8 times [2023-08-27 00:33:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:34,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23409079] [2023-08-27 00:33:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:34,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:34,531 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 00:33:34,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:34,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23409079] [2023-08-27 00:33:34,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23409079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:34,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:34,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 00:33:34,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31313666] [2023-08-27 00:33:34,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:34,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:33:34,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:34,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:33:34,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:33:34,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:34,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 249 transitions, 3750 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:34,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:34,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:34,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:35,264 INFO L124 PetriNetUnfolderBase]: 2463/4967 cut-off events. [2023-08-27 00:33:35,264 INFO L125 PetriNetUnfolderBase]: For 47872/48861 co-relation queries the response was YES. [2023-08-27 00:33:35,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26558 conditions, 4967 events. 2463/4967 cut-off events. For 47872/48861 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 37543 event pairs, 278 based on Foata normal form. 473/5332 useless extension candidates. Maximal degree in co-relation 26526. Up to 1359 conditions per place. [2023-08-27 00:33:35,288 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 113 selfloop transitions, 198 changer transitions 9/334 dead transitions. [2023-08-27 00:33:35,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 334 transitions, 4986 flow [2023-08-27 00:33:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:33:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:33:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1047 transitions. [2023-08-27 00:33:35,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49952290076335876 [2023-08-27 00:33:35,292 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1047 transitions. [2023-08-27 00:33:35,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1047 transitions. [2023-08-27 00:33:35,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:35,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1047 transitions. [2023-08-27 00:33:35,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.875) internal successors, (1047), 8 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:35,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:35,297 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:35,297 INFO L175 Difference]: Start difference. First operand has 98 places, 249 transitions, 3750 flow. Second operand 8 states and 1047 transitions. [2023-08-27 00:33:35,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 334 transitions, 4986 flow [2023-08-27 00:33:35,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 334 transitions, 4800 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:33:35,363 INFO L231 Difference]: Finished difference. Result has 105 places, 259 transitions, 4202 flow [2023-08-27 00:33:35,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3585, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4202, PETRI_PLACES=105, PETRI_TRANSITIONS=259} [2023-08-27 00:33:35,364 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-08-27 00:33:35,364 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 259 transitions, 4202 flow [2023-08-27 00:33:35,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:35,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:35,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:35,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 00:33:35,364 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:35,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:35,365 INFO L85 PathProgramCache]: Analyzing trace with hash -528857634, now seen corresponding path program 9 times [2023-08-27 00:33:35,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:35,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297006137] [2023-08-27 00:33:35,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:35,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:35,524 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 00:33:35,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:35,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297006137] [2023-08-27 00:33:35,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297006137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:35,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:35,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 00:33:35,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215435923] [2023-08-27 00:33:35,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:35,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:33:35,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:35,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:33:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:33:35,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:35,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 259 transitions, 4202 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:35,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:35,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:35,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:36,096 INFO L124 PetriNetUnfolderBase]: 1722/3631 cut-off events. [2023-08-27 00:33:36,097 INFO L125 PetriNetUnfolderBase]: For 36414/37274 co-relation queries the response was YES. [2023-08-27 00:33:36,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20646 conditions, 3631 events. 1722/3631 cut-off events. For 36414/37274 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 26692 event pairs, 180 based on Foata normal form. 532/4123 useless extension candidates. Maximal degree in co-relation 20612. Up to 900 conditions per place. [2023-08-27 00:33:36,115 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 102 selfloop transitions, 170 changer transitions 59/344 dead transitions. [2023-08-27 00:33:36,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 344 transitions, 5678 flow [2023-08-27 00:33:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:33:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:33:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1041 transitions. [2023-08-27 00:33:36,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49666030534351147 [2023-08-27 00:33:36,122 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1041 transitions. [2023-08-27 00:33:36,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1041 transitions. [2023-08-27 00:33:36,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:36,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1041 transitions. [2023-08-27 00:33:36,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.125) internal successors, (1041), 8 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:36,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:36,127 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:36,127 INFO L175 Difference]: Start difference. First operand has 105 places, 259 transitions, 4202 flow. Second operand 8 states and 1041 transitions. [2023-08-27 00:33:36,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 344 transitions, 5678 flow [2023-08-27 00:33:36,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 344 transitions, 5565 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-27 00:33:36,200 INFO L231 Difference]: Finished difference. Result has 111 places, 225 transitions, 3956 flow [2023-08-27 00:33:36,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3927, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3956, PETRI_PLACES=111, PETRI_TRANSITIONS=225} [2023-08-27 00:33:36,201 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 48 predicate places. [2023-08-27 00:33:36,201 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 225 transitions, 3956 flow [2023-08-27 00:33:36,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:36,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:36,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:36,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 00:33:36,202 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:36,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:36,202 INFO L85 PathProgramCache]: Analyzing trace with hash -100376462, now seen corresponding path program 10 times [2023-08-27 00:33:36,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:36,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876540243] [2023-08-27 00:33:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:36,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:36,386 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 00:33:36,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:36,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876540243] [2023-08-27 00:33:36,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876540243] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:36,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:36,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:33:36,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34361336] [2023-08-27 00:33:36,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:36,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 00:33:36,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:36,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 00:33:36,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:33:36,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:36,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 225 transitions, 3956 flow. Second operand has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:36,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:36,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:36,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:36,926 INFO L124 PetriNetUnfolderBase]: 1367/2932 cut-off events. [2023-08-27 00:33:36,926 INFO L125 PetriNetUnfolderBase]: For 33931/34405 co-relation queries the response was YES. [2023-08-27 00:33:36,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17016 conditions, 2932 events. 1367/2932 cut-off events. For 33931/34405 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 20832 event pairs, 136 based on Foata normal form. 274/3158 useless extension candidates. Maximal degree in co-relation 16981. Up to 744 conditions per place. [2023-08-27 00:33:36,940 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 81 selfloop transitions, 170 changer transitions 31/295 dead transitions. [2023-08-27 00:33:36,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 295 transitions, 5002 flow [2023-08-27 00:33:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 00:33:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 00:33:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1152 transitions. [2023-08-27 00:33:36,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48854961832061067 [2023-08-27 00:33:36,942 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1152 transitions. [2023-08-27 00:33:36,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1152 transitions. [2023-08-27 00:33:36,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:36,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1152 transitions. [2023-08-27 00:33:36,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:36,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:36,947 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:36,947 INFO L175 Difference]: Start difference. First operand has 111 places, 225 transitions, 3956 flow. Second operand 9 states and 1152 transitions. [2023-08-27 00:33:36,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 295 transitions, 5002 flow [2023-08-27 00:33:36,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 295 transitions, 4842 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:33:36,987 INFO L231 Difference]: Finished difference. Result has 117 places, 207 transitions, 3782 flow [2023-08-27 00:33:36,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3803, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3782, PETRI_PLACES=117, PETRI_TRANSITIONS=207} [2023-08-27 00:33:36,988 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 54 predicate places. [2023-08-27 00:33:36,988 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 207 transitions, 3782 flow [2023-08-27 00:33:36,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:36,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:36,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:36,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 00:33:36,988 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:36,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:36,989 INFO L85 PathProgramCache]: Analyzing trace with hash 312242054, now seen corresponding path program 11 times [2023-08-27 00:33:36,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:36,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003117340] [2023-08-27 00:33:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:36,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:37,161 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 00:33:37,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:37,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003117340] [2023-08-27 00:33:37,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003117340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:37,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:37,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 00:33:37,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713324607] [2023-08-27 00:33:37,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:37,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 00:33:37,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:37,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 00:33:37,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-27 00:33:37,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:37,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 207 transitions, 3782 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:37,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:37,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:37,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:37,737 INFO L124 PetriNetUnfolderBase]: 1228/2679 cut-off events. [2023-08-27 00:33:37,737 INFO L125 PetriNetUnfolderBase]: For 35091/35467 co-relation queries the response was YES. [2023-08-27 00:33:37,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15872 conditions, 2679 events. 1228/2679 cut-off events. For 35091/35467 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 18740 event pairs, 133 based on Foata normal form. 226/2862 useless extension candidates. Maximal degree in co-relation 15837. Up to 679 conditions per place. [2023-08-27 00:33:37,755 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 90 selfloop transitions, 164 changer transitions 17/284 dead transitions. [2023-08-27 00:33:37,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 284 transitions, 4785 flow [2023-08-27 00:33:37,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:33:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:33:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1514 transitions. [2023-08-27 00:33:37,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4815521628498728 [2023-08-27 00:33:37,758 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1514 transitions. [2023-08-27 00:33:37,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1514 transitions. [2023-08-27 00:33:37,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:37,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1514 transitions. [2023-08-27 00:33:37,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 126.16666666666667) internal successors, (1514), 12 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:37,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:37,763 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:37,764 INFO L175 Difference]: Start difference. First operand has 117 places, 207 transitions, 3782 flow. Second operand 12 states and 1514 transitions. [2023-08-27 00:33:37,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 284 transitions, 4785 flow [2023-08-27 00:33:37,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 284 transitions, 4562 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-08-27 00:33:37,809 INFO L231 Difference]: Finished difference. Result has 125 places, 201 transitions, 3769 flow [2023-08-27 00:33:37,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3590, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3769, PETRI_PLACES=125, PETRI_TRANSITIONS=201} [2023-08-27 00:33:37,809 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 62 predicate places. [2023-08-27 00:33:37,809 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 201 transitions, 3769 flow [2023-08-27 00:33:37,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:37,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:37,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:37,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 00:33:37,810 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:37,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:37,810 INFO L85 PathProgramCache]: Analyzing trace with hash -177051734, now seen corresponding path program 12 times [2023-08-27 00:33:37,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:37,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187938532] [2023-08-27 00:33:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:37,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:37,983 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 00:33:37,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:37,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187938532] [2023-08-27 00:33:37,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187938532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:37,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:37,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 00:33:37,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622678228] [2023-08-27 00:33:37,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:37,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 00:33:37,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:37,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 00:33:37,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-27 00:33:37,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:37,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 201 transitions, 3769 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:37,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:37,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:37,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:38,576 INFO L124 PetriNetUnfolderBase]: 1227/2691 cut-off events. [2023-08-27 00:33:38,576 INFO L125 PetriNetUnfolderBase]: For 40994/41476 co-relation queries the response was YES. [2023-08-27 00:33:38,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16319 conditions, 2691 events. 1227/2691 cut-off events. For 40994/41476 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 18993 event pairs, 144 based on Foata normal form. 266/2910 useless extension candidates. Maximal degree in co-relation 16283. Up to 683 conditions per place. [2023-08-27 00:33:38,594 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 75 selfloop transitions, 153 changer transitions 44/285 dead transitions. [2023-08-27 00:33:38,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 285 transitions, 4983 flow [2023-08-27 00:33:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:33:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:33:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1513 transitions. [2023-08-27 00:33:38,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481234096692112 [2023-08-27 00:33:38,597 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1513 transitions. [2023-08-27 00:33:38,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1513 transitions. [2023-08-27 00:33:38,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:38,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1513 transitions. [2023-08-27 00:33:38,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 126.08333333333333) internal successors, (1513), 12 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:38,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:38,603 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:38,603 INFO L175 Difference]: Start difference. First operand has 125 places, 201 transitions, 3769 flow. Second operand 12 states and 1513 transitions. [2023-08-27 00:33:38,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 285 transitions, 4983 flow [2023-08-27 00:33:38,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 285 transitions, 4594 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-27 00:33:38,662 INFO L231 Difference]: Finished difference. Result has 128 places, 189 transitions, 3496 flow [2023-08-27 00:33:38,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3496, PETRI_PLACES=128, PETRI_TRANSITIONS=189} [2023-08-27 00:33:38,664 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 65 predicate places. [2023-08-27 00:33:38,664 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 189 transitions, 3496 flow [2023-08-27 00:33:38,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:38,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:38,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:38,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 00:33:38,665 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:38,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1957289118, now seen corresponding path program 13 times [2023-08-27 00:33:38,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:38,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815565216] [2023-08-27 00:33:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:38,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:38,828 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 00:33:38,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:38,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815565216] [2023-08-27 00:33:38,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815565216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:38,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:38,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 00:33:38,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395440719] [2023-08-27 00:33:38,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:38,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 00:33:38,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:38,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 00:33:38,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-27 00:33:38,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:38,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 189 transitions, 3496 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:38,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:38,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:38,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:39,422 INFO L124 PetriNetUnfolderBase]: 1143/2527 cut-off events. [2023-08-27 00:33:39,422 INFO L125 PetriNetUnfolderBase]: For 38375/38843 co-relation queries the response was YES. [2023-08-27 00:33:39,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15269 conditions, 2527 events. 1143/2527 cut-off events. For 38375/38843 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17713 event pairs, 138 based on Foata normal form. 256/2739 useless extension candidates. Maximal degree in co-relation 15233. Up to 680 conditions per place. [2023-08-27 00:33:39,439 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 82 selfloop transitions, 149 changer transitions 27/270 dead transitions. [2023-08-27 00:33:39,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 270 transitions, 4518 flow [2023-08-27 00:33:39,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:33:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:33:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1514 transitions. [2023-08-27 00:33:39,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4815521628498728 [2023-08-27 00:33:39,442 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1514 transitions. [2023-08-27 00:33:39,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1514 transitions. [2023-08-27 00:33:39,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:39,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1514 transitions. [2023-08-27 00:33:39,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 126.16666666666667) internal successors, (1514), 12 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:39,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:39,447 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:39,447 INFO L175 Difference]: Start difference. First operand has 128 places, 189 transitions, 3496 flow. Second operand 12 states and 1514 transitions. [2023-08-27 00:33:39,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 270 transitions, 4518 flow [2023-08-27 00:33:39,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 270 transitions, 4180 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-08-27 00:33:39,505 INFO L231 Difference]: Finished difference. Result has 129 places, 183 transitions, 3355 flow [2023-08-27 00:33:39,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3188, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3355, PETRI_PLACES=129, PETRI_TRANSITIONS=183} [2023-08-27 00:33:39,506 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 66 predicate places. [2023-08-27 00:33:39,506 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 183 transitions, 3355 flow [2023-08-27 00:33:39,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:39,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:39,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:39,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 00:33:39,506 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:39,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:39,507 INFO L85 PathProgramCache]: Analyzing trace with hash -589712180, now seen corresponding path program 14 times [2023-08-27 00:33:39,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:39,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899039523] [2023-08-27 00:33:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:39,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:39,656 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 00:33:39,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:39,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899039523] [2023-08-27 00:33:39,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899039523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:39,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:39,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 00:33:39,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721675907] [2023-08-27 00:33:39,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:39,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:33:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:39,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:33:39,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:33:39,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:39,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 183 transitions, 3355 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:39,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:39,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:39,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:39,906 INFO L124 PetriNetUnfolderBase]: 305/748 cut-off events. [2023-08-27 00:33:39,907 INFO L125 PetriNetUnfolderBase]: For 10594/10778 co-relation queries the response was YES. [2023-08-27 00:33:39,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5116 conditions, 748 events. 305/748 cut-off events. For 10594/10778 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4221 event pairs, 21 based on Foata normal form. 170/918 useless extension candidates. Maximal degree in co-relation 5079. Up to 183 conditions per place. [2023-08-27 00:33:39,910 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 44 selfloop transitions, 26 changer transitions 56/134 dead transitions. [2023-08-27 00:33:39,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 2236 flow [2023-08-27 00:33:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:33:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:33:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1000 transitions. [2023-08-27 00:33:39,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4770992366412214 [2023-08-27 00:33:39,912 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1000 transitions. [2023-08-27 00:33:39,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1000 transitions. [2023-08-27 00:33:39,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:39,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1000 transitions. [2023-08-27 00:33:39,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:39,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:39,915 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:39,915 INFO L175 Difference]: Start difference. First operand has 129 places, 183 transitions, 3355 flow. Second operand 8 states and 1000 transitions. [2023-08-27 00:33:39,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 2236 flow [2023-08-27 00:33:39,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 134 transitions, 1936 flow, removed 14 selfloop flow, removed 15 redundant places. [2023-08-27 00:33:39,934 INFO L231 Difference]: Finished difference. Result has 121 places, 58 transitions, 660 flow [2023-08-27 00:33:39,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=660, PETRI_PLACES=121, PETRI_TRANSITIONS=58} [2023-08-27 00:33:39,934 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 58 predicate places. [2023-08-27 00:33:39,935 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 58 transitions, 660 flow [2023-08-27 00:33:39,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:39,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:39,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:39,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 00:33:39,935 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:39,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:39,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1287176328, now seen corresponding path program 15 times [2023-08-27 00:33:39,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:39,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983934222] [2023-08-27 00:33:39,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:39,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:40,086 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 00:33:40,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:40,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983934222] [2023-08-27 00:33:40,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983934222] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:40,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:40,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 00:33:40,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661501062] [2023-08-27 00:33:40,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:40,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 00:33:40,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:40,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 00:33:40,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:33:40,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:40,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 58 transitions, 660 flow. Second operand has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:40,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:40,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:40,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:40,246 INFO L124 PetriNetUnfolderBase]: 79/218 cut-off events. [2023-08-27 00:33:40,246 INFO L125 PetriNetUnfolderBase]: For 2570/2584 co-relation queries the response was YES. [2023-08-27 00:33:40,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 218 events. 79/218 cut-off events. For 2570/2584 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 720 event pairs, 6 based on Foata normal form. 20/238 useless extension candidates. Maximal degree in co-relation 1244. Up to 44 conditions per place. [2023-08-27 00:33:40,248 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 38 selfloop transitions, 16 changer transitions 10/72 dead transitions. [2023-08-27 00:33:40,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 72 transitions, 822 flow [2023-08-27 00:33:40,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:33:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:33:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 974 transitions. [2023-08-27 00:33:40,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46469465648854963 [2023-08-27 00:33:40,249 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 974 transitions. [2023-08-27 00:33:40,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 974 transitions. [2023-08-27 00:33:40,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:40,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 974 transitions. [2023-08-27 00:33:40,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 121.75) internal successors, (974), 8 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:40,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:40,253 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:40,253 INFO L175 Difference]: Start difference. First operand has 121 places, 58 transitions, 660 flow. Second operand 8 states and 974 transitions. [2023-08-27 00:33:40,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 72 transitions, 822 flow [2023-08-27 00:33:40,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 493 flow, removed 35 selfloop flow, removed 41 redundant places. [2023-08-27 00:33:40,258 INFO L231 Difference]: Finished difference. Result has 77 places, 44 transitions, 258 flow [2023-08-27 00:33:40,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=258, PETRI_PLACES=77, PETRI_TRANSITIONS=44} [2023-08-27 00:33:40,258 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2023-08-27 00:33:40,258 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 44 transitions, 258 flow [2023-08-27 00:33:40,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:40,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:33:40,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:40,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 00:33:40,259 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:33:40,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:33:40,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1420940912, now seen corresponding path program 16 times [2023-08-27 00:33:40,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:33:40,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826415607] [2023-08-27 00:33:40,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:33:40,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:33:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:33:40,407 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 00:33:40,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:33:40,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826415607] [2023-08-27 00:33:40,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826415607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:33:40,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:33:40,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 00:33:40,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240071783] [2023-08-27 00:33:40,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:33:40,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 00:33:40,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:33:40,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 00:33:40,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-27 00:33:40,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 00:33:40,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 44 transitions, 258 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:40,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:33:40,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 00:33:40,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:33:40,524 INFO L124 PetriNetUnfolderBase]: 40/109 cut-off events. [2023-08-27 00:33:40,524 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2023-08-27 00:33:40,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 109 events. 40/109 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 297 event pairs, 0 based on Foata normal form. 4/113 useless extension candidates. Maximal degree in co-relation 432. Up to 25 conditions per place. [2023-08-27 00:33:40,524 INFO L140 encePairwiseOnDemand]: 254/262 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-27 00:33:40,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 44 transitions, 323 flow [2023-08-27 00:33:40,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 00:33:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 00:33:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1065 transitions. [2023-08-27 00:33:40,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45165394402035625 [2023-08-27 00:33:40,526 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1065 transitions. [2023-08-27 00:33:40,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1065 transitions. [2023-08-27 00:33:40,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:33:40,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1065 transitions. [2023-08-27 00:33:40,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.33333333333333) internal successors, (1065), 9 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:40,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:40,530 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:40,530 INFO L175 Difference]: Start difference. First operand has 77 places, 44 transitions, 258 flow. Second operand 9 states and 1065 transitions. [2023-08-27 00:33:40,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 44 transitions, 323 flow [2023-08-27 00:33:40,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 252 flow, removed 2 selfloop flow, removed 19 redundant places. [2023-08-27 00:33:40,531 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-08-27 00:33:40,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-08-27 00:33:40,532 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -12 predicate places. [2023-08-27 00:33:40,532 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-08-27 00:33:40,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:33:40,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 37 remaining) [2023-08-27 00:33:40,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 37 remaining) [2023-08-27 00:33:40,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 37 remaining) [2023-08-27 00:33:40,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 37 remaining) [2023-08-27 00:33:40,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 37 remaining) [2023-08-27 00:33:40,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 37 remaining) [2023-08-27 00:33:40,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 37 remaining) [2023-08-27 00:33:40,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 37 remaining) [2023-08-27 00:33:40,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 37 remaining) [2023-08-27 00:33:40,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 37 remaining) [2023-08-27 00:33:40,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 37 remaining) [2023-08-27 00:33:40,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 37 remaining) [2023-08-27 00:33:40,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (24 of 37 remaining) [2023-08-27 00:33:40,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 37 remaining) [2023-08-27 00:33:40,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 37 remaining) [2023-08-27 00:33:40,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 37 remaining) [2023-08-27 00:33:40,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 37 remaining) [2023-08-27 00:33:40,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 37 remaining) [2023-08-27 00:33:40,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 37 remaining) [2023-08-27 00:33:40,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 37 remaining) [2023-08-27 00:33:40,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 37 remaining) [2023-08-27 00:33:40,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 37 remaining) [2023-08-27 00:33:40,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 37 remaining) [2023-08-27 00:33:40,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 37 remaining) [2023-08-27 00:33:40,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 37 remaining) [2023-08-27 00:33:40,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 37 remaining) [2023-08-27 00:33:40,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 37 remaining) [2023-08-27 00:33:40,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 37 remaining) [2023-08-27 00:33:40,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 37 remaining) [2023-08-27 00:33:40,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 37 remaining) [2023-08-27 00:33:40,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 37 remaining) [2023-08-27 00:33:40,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 37 remaining) [2023-08-27 00:33:40,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 37 remaining) [2023-08-27 00:33:40,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 37 remaining) [2023-08-27 00:33:40,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 37 remaining) [2023-08-27 00:33:40,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 37 remaining) [2023-08-27 00:33:40,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 37 remaining) [2023-08-27 00:33:40,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 00:33:40,540 INFO L445 BasicCegarLoop]: Path program histogram: [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:33:40,544 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 00:33:40,544 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 00:33:40,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:33:40 BasicIcfg [2023-08-27 00:33:40,547 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 00:33:40,548 INFO L158 Benchmark]: Toolchain (without parser) took 32131.33ms. Allocated memory was 350.2MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 307.5MB in the beginning and 6.1GB in the end (delta: -5.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2023-08-27 00:33:40,548 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory was 327.9MB in the beginning and 327.8MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 00:33:40,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.80ms. Allocated memory is still 350.2MB. Free memory was 307.2MB in the beginning and 295.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 00:33:40,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.50ms. Allocated memory is still 350.2MB. Free memory was 295.6MB in the beginning and 293.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:33:40,548 INFO L158 Benchmark]: Boogie Preprocessor took 35.64ms. Allocated memory is still 350.2MB. Free memory was 293.5MB in the beginning and 291.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:33:40,549 INFO L158 Benchmark]: RCFGBuilder took 645.03ms. Allocated memory is still 350.2MB. Free memory was 291.4MB in the beginning and 260.0MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-27 00:33:40,549 INFO L158 Benchmark]: TraceAbstraction took 31175.95ms. Allocated memory was 350.2MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 260.0MB in the beginning and 6.1GB in the end (delta: -5.9GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2023-08-27 00:33:40,550 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory was 327.9MB in the beginning and 327.8MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 202.80ms. Allocated memory is still 350.2MB. Free memory was 307.2MB in the beginning and 295.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 66.50ms. Allocated memory is still 350.2MB. Free memory was 295.6MB in the beginning and 293.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.64ms. Allocated memory is still 350.2MB. Free memory was 293.5MB in the beginning and 291.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 645.03ms. Allocated memory is still 350.2MB. Free memory was 291.4MB in the beginning and 260.0MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * TraceAbstraction took 31175.95ms. Allocated memory was 350.2MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 260.0MB in the beginning and 6.1GB in the end (delta: -5.9GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 154 PlacesBefore, 63 PlacesAfterwards, 143 TransitionsBefore, 50 TransitionsAfterwards, 2622 CoEnabledTransitionPairs, 8 FixpointIterations, 70 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 102 TotalNumberOfCompositions, 16377 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5062, independent: 4652, independent conditional: 0, independent unconditional: 4652, dependent: 410, dependent conditional: 0, dependent unconditional: 410, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1035, independent: 985, independent conditional: 0, independent unconditional: 985, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5062, independent: 3667, independent conditional: 0, independent unconditional: 3667, dependent: 360, dependent conditional: 0, dependent unconditional: 360, unknown: 1035, unknown conditional: 0, unknown unconditional: 1035] , Statistics on independence cache: Total cache size (in pairs): 296, Positive cache size: 273, Positive conditional cache size: 0, Positive unconditional cache size: 273, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 208 locations, 37 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: 31.0s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 21.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1357 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1357 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 445 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5376 IncrementalHoareTripleChecker+Invalid, 5821 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 445 mSolverCounterUnsat, 4 mSDtfsCounter, 5376 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4202occurred in iteration=18, InterpolantAutomatonStates: 177, 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: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 622 ConstructedInterpolants, 0 QuantifiedInterpolants, 1826 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 00:33:40,566 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 Received shutdown request...