/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/pthread-ext/09_fmaxsym.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 20:54:44,806 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 20:54:44,893 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 [2023-08-26 20:54:44,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 20:54:44,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 20:54:44,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 20:54:44,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 20:54:44,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 20:54:44,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 20:54:44,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 20:54:44,934 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 20:54:44,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 20:54:44,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 20:54:44,935 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 20:54:44,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 20:54:44,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 20:54:44,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 20:54:44,936 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 20:54:44,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 20:54:44,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 20:54:44,937 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 20:54:44,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 20:54:44,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 20:54:44,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 20:54:44,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 20:54:44,939 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 20:54:44,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 20:54:44,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:54:44,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 20:54:44,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 20:54:44,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 20:54:44,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 20:54:44,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 20:54:44,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 20:54:44,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 20:54:44,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 20:54:45,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 20:54:45,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 20:54:45,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 20:54:45,284 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 20:54:45,284 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 20:54:45,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/09_fmaxsym.i [2023-08-26 20:54:46,496 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 20:54:46,748 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 20:54:46,749 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/09_fmaxsym.i [2023-08-26 20:54:46,761 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c921568bb/4a32d35885a84295a95845b7d7fd3800/FLAG052dc8db0 [2023-08-26 20:54:46,773 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c921568bb/4a32d35885a84295a95845b7d7fd3800 [2023-08-26 20:54:46,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 20:54:46,776 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 20:54:46,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 20:54:46,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 20:54:46,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 20:54:46,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:54:46" (1/1) ... [2023-08-26 20:54:46,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b2f29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:46, skipping insertion in model container [2023-08-26 20:54:46,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:54:46" (1/1) ... [2023-08-26 20:54:46,814 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 20:54:47,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:54:47,061 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 20:54:47,095 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-26 20:54:47,096 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-26 20:54:47,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:54:47,163 INFO L206 MainTranslator]: Completed translation [2023-08-26 20:54:47,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47 WrapperNode [2023-08-26 20:54:47,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 20:54:47,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 20:54:47,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 20:54:47,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 20:54:47,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (1/1) ... [2023-08-26 20:54:47,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (1/1) ... [2023-08-26 20:54:47,223 INFO L138 Inliner]: procedures = 171, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 85 [2023-08-26 20:54:47,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 20:54:47,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 20:54:47,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 20:54:47,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 20:54:47,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (1/1) ... [2023-08-26 20:54:47,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (1/1) ... [2023-08-26 20:54:47,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (1/1) ... [2023-08-26 20:54:47,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (1/1) ... [2023-08-26 20:54:47,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (1/1) ... [2023-08-26 20:54:47,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (1/1) ... [2023-08-26 20:54:47,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (1/1) ... [2023-08-26 20:54:47,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (1/1) ... [2023-08-26 20:54:47,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 20:54:47,260 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 20:54:47,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 20:54:47,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 20:54:47,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (1/1) ... [2023-08-26 20:54:47,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:54:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:54:47,294 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) [2023-08-26 20:54:47,306 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 [2023-08-26 20:54:47,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 20:54:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-26 20:54:47,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-26 20:54:47,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 20:54:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 20:54:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 20:54:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 20:54:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 20:54:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 20:54:47,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 20:54:47,341 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 20:54:47,488 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 20:54:47,490 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 20:54:47,655 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 20:54:47,681 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 20:54:47,681 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 20:54:47,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:54:47 BoogieIcfgContainer [2023-08-26 20:54:47,684 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 20:54:47,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 20:54:47,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 20:54:47,688 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 20:54:47,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:54:46" (1/3) ... [2023-08-26 20:54:47,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a97e78b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:54:47, skipping insertion in model container [2023-08-26 20:54:47,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:54:47" (2/3) ... [2023-08-26 20:54:47,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a97e78b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:54:47, skipping insertion in model container [2023-08-26 20:54:47,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:54:47" (3/3) ... [2023-08-26 20:54:47,691 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2023-08-26 20:54:47,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 20:54:47,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 20:54:47,708 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 20:54:47,758 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 20:54:47,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 84 transitions, 173 flow [2023-08-26 20:54:47,840 INFO L124 PetriNetUnfolderBase]: 8/94 cut-off events. [2023-08-26 20:54:47,841 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 20:54:47,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 94 events. 8/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2023-08-26 20:54:47,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 84 transitions, 173 flow [2023-08-26 20:54:47,851 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 173 flow [2023-08-26 20:54:47,855 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 20:54:47,868 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 84 transitions, 173 flow [2023-08-26 20:54:47,871 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 84 transitions, 173 flow [2023-08-26 20:54:47,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 84 transitions, 173 flow [2023-08-26 20:54:47,893 INFO L124 PetriNetUnfolderBase]: 8/94 cut-off events. [2023-08-26 20:54:47,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 20:54:47,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 94 events. 8/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2023-08-26 20:54:47,895 INFO L119 LiptonReduction]: Number of co-enabled transitions 1300 [2023-08-26 20:54:51,403 INFO L134 LiptonReduction]: Checked pairs total: 1488 [2023-08-26 20:54:51,404 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-26 20:54:51,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 20:54:51,421 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;@40d8521c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 20:54:51,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-26 20:54:51,431 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 20:54:51,431 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-08-26 20:54:51,431 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 20:54:51,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:51,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 20:54:51,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-26 20:54:51,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash 396303390, now seen corresponding path program 1 times [2023-08-26 20:54:51,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:51,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131379968] [2023-08-26 20:54:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:51,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:54:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:54:51,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:54:51,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131379968] [2023-08-26 20:54:51,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131379968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:54:51,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:54:51,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:54:51,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777874753] [2023-08-26 20:54:51,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:54:51,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:54:51,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:54:51,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:54:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:54:51,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 183 [2023-08-26 20:54:51,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 14 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:51,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:54:51,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 183 [2023-08-26 20:54:51,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:54:51,838 INFO L124 PetriNetUnfolderBase]: 11/29 cut-off events. [2023-08-26 20:54:51,838 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 20:54:51,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 29 events. 11/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 57 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 50. Up to 23 conditions per place. [2023-08-26 20:54:51,841 INFO L140 encePairwiseOnDemand]: 178/183 looper letters, 10 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2023-08-26 20:54:51,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 12 transitions, 51 flow [2023-08-26 20:54:51,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:54:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:54:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2023-08-26 20:54:51,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3843351548269581 [2023-08-26 20:54:51,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2023-08-26 20:54:51,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2023-08-26 20:54:51,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:54:51,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2023-08-26 20:54:51,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:51,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:51,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:51,892 INFO L175 Difference]: Start difference. First operand has 16 places, 14 transitions, 33 flow. Second operand 3 states and 211 transitions. [2023-08-26 20:54:51,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 12 transitions, 51 flow [2023-08-26 20:54:51,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 51 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 20:54:51,895 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 27 flow [2023-08-26 20:54:51,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2023-08-26 20:54:51,900 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -2 predicate places. [2023-08-26 20:54:51,900 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 27 flow [2023-08-26 20:54:51,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:51,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:51,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 20:54:51,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 20:54:51,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-26 20:54:51,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:51,902 INFO L85 PathProgramCache]: Analyzing trace with hash 396303452, now seen corresponding path program 1 times [2023-08-26 20:54:51,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:51,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233414226] [2023-08-26 20:54:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:51,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:54:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:54:52,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:54:52,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233414226] [2023-08-26 20:54:52,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233414226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:54:52,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:54:52,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:54:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951617693] [2023-08-26 20:54:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:54:52,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:54:52,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:54:52,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:54:52,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:54:52,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 183 [2023-08-26 20:54:52,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 10 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:52,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:54:52,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 183 [2023-08-26 20:54:52,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:54:52,075 INFO L124 PetriNetUnfolderBase]: 9/24 cut-off events. [2023-08-26 20:54:52,075 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:54:52,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 24 events. 9/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 38 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 43. Up to 18 conditions per place. [2023-08-26 20:54:52,076 INFO L140 encePairwiseOnDemand]: 181/183 looper letters, 9 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-08-26 20:54:52,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 11 transitions, 49 flow [2023-08-26 20:54:52,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:54:52,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:54:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2023-08-26 20:54:52,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37522768670309653 [2023-08-26 20:54:52,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 206 transitions. [2023-08-26 20:54:52,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 206 transitions. [2023-08-26 20:54:52,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:54:52,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 206 transitions. [2023-08-26 20:54:52,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:52,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:52,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:52,086 INFO L175 Difference]: Start difference. First operand has 14 places, 10 transitions, 27 flow. Second operand 3 states and 206 transitions. [2023-08-26 20:54:52,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 11 transitions, 49 flow [2023-08-26 20:54:52,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 48 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:54:52,087 INFO L231 Difference]: Finished difference. Result has 14 places, 9 transitions, 26 flow [2023-08-26 20:54:52,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=14, PETRI_TRANSITIONS=9} [2023-08-26 20:54:52,088 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -2 predicate places. [2023-08-26 20:54:52,088 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 9 transitions, 26 flow [2023-08-26 20:54:52,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:52,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:52,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 20:54:52,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 20:54:52,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-26 20:54:52,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash 396303522, now seen corresponding path program 1 times [2023-08-26 20:54:52,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:52,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711838056] [2023-08-26 20:54:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:54:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:54:52,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:54:52,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711838056] [2023-08-26 20:54:52,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711838056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:54:52,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:54:52,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:54:52,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489899728] [2023-08-26 20:54:52,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:54:52,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:54:52,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:54:52,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:54:52,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:54:52,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 183 [2023-08-26 20:54:52,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 9 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:52,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:54:52,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 183 [2023-08-26 20:54:52,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:54:52,276 INFO L124 PetriNetUnfolderBase]: 11/29 cut-off events. [2023-08-26 20:54:52,276 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:54:52,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 29 events. 11/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 6 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 56. Up to 24 conditions per place. [2023-08-26 20:54:52,276 INFO L140 encePairwiseOnDemand]: 179/183 looper letters, 9 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2023-08-26 20:54:52,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 54 flow [2023-08-26 20:54:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:54:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:54:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2023-08-26 20:54:52,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3570127504553734 [2023-08-26 20:54:52,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2023-08-26 20:54:52,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2023-08-26 20:54:52,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:54:52,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2023-08-26 20:54:52,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:52,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:52,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:52,281 INFO L175 Difference]: Start difference. First operand has 14 places, 9 transitions, 26 flow. Second operand 3 states and 196 transitions. [2023-08-26 20:54:52,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 54 flow [2023-08-26 20:54:52,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 53 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:54:52,282 INFO L231 Difference]: Finished difference. Result has 16 places, 10 transitions, 39 flow [2023-08-26 20:54:52,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2023-08-26 20:54:52,283 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 0 predicate places. [2023-08-26 20:54:52,283 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 39 flow [2023-08-26 20:54:52,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:52,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:52,284 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 20:54:52,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 20:54:52,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-26 20:54:52,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash -599554664, now seen corresponding path program 1 times [2023-08-26 20:54:52,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:52,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465679166] [2023-08-26 20:54:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:52,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 20:54:52,306 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 20:54:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 20:54:52,332 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 20:54:52,332 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 20:54:52,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-26 20:54:52,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-26 20:54:52,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-26 20:54:52,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-26 20:54:52,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (6 of 11 remaining) [2023-08-26 20:54:52,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-08-26 20:54:52,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-08-26 20:54:52,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-26 20:54:52,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-26 20:54:52,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (1 of 11 remaining) [2023-08-26 20:54:52,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-26 20:54:52,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 20:54:52,339 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-26 20:54:52,342 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 20:54:52,342 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 20:54:52,378 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 20:54:52,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 135 transitions, 282 flow [2023-08-26 20:54:52,406 INFO L124 PetriNetUnfolderBase]: 15/157 cut-off events. [2023-08-26 20:54:52,407 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:54:52,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 157 events. 15/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 290 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2023-08-26 20:54:52,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 135 transitions, 282 flow [2023-08-26 20:54:52,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 135 transitions, 282 flow [2023-08-26 20:54:52,410 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 20:54:52,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 135 transitions, 282 flow [2023-08-26 20:54:52,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 135 transitions, 282 flow [2023-08-26 20:54:52,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 135 transitions, 282 flow [2023-08-26 20:54:52,427 INFO L124 PetriNetUnfolderBase]: 15/157 cut-off events. [2023-08-26 20:54:52,428 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:54:52,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 157 events. 15/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 290 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2023-08-26 20:54:52,434 INFO L119 LiptonReduction]: Number of co-enabled transitions 7700 [2023-08-26 20:54:55,042 INFO L134 LiptonReduction]: Checked pairs total: 12376 [2023-08-26 20:54:55,042 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-26 20:54:55,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 20:54:55,044 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;@40d8521c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 20:54:55,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-26 20:54:55,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 20:54:55,046 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 20:54:55,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 20:54:55,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:55,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 20:54:55,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 20:54:55,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:55,047 INFO L85 PathProgramCache]: Analyzing trace with hash 703642665, now seen corresponding path program 1 times [2023-08-26 20:54:55,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:55,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998934076] [2023-08-26 20:54:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:55,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:54:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:54:55,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:54:55,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998934076] [2023-08-26 20:54:55,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998934076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:54:55,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:54:55,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:54:55,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006972241] [2023-08-26 20:54:55,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:54:55,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:54:55,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:54:55,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:54:55,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:54:55,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 270 [2023-08-26 20:54:55,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:54:55,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 270 [2023-08-26 20:54:55,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:54:55,191 INFO L124 PetriNetUnfolderBase]: 345/622 cut-off events. [2023-08-26 20:54:55,191 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-26 20:54:55,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 622 events. 345/622 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3500 event pairs, 9 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 1070. Up to 508 conditions per place. [2023-08-26 20:54:55,197 INFO L140 encePairwiseOnDemand]: 267/270 looper letters, 35 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-26 20:54:55,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 181 flow [2023-08-26 20:54:55,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:54:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:54:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-08-26 20:54:55,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2023-08-26 20:54:55,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-08-26 20:54:55,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-08-26 20:54:55,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:54:55,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-08-26 20:54:55,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,202 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 84 flow. Second operand 3 states and 363 transitions. [2023-08-26 20:54:55,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 181 flow [2023-08-26 20:54:55,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 179 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-26 20:54:55,203 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 80 flow [2023-08-26 20:54:55,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2023-08-26 20:54:55,204 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-26 20:54:55,204 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 80 flow [2023-08-26 20:54:55,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:55,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 20:54:55,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 20:54:55,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 20:54:55,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:55,206 INFO L85 PathProgramCache]: Analyzing trace with hash 703642701, now seen corresponding path program 1 times [2023-08-26 20:54:55,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:55,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687744600] [2023-08-26 20:54:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:55,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:54:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:54:55,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:54:55,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687744600] [2023-08-26 20:54:55,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687744600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:54:55,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:54:55,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:54:55,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115028504] [2023-08-26 20:54:55,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:54:55,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:54:55,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:54:55,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:54:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:54:55,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 270 [2023-08-26 20:54:55,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:54:55,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 270 [2023-08-26 20:54:55,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:54:55,330 INFO L124 PetriNetUnfolderBase]: 305/544 cut-off events. [2023-08-26 20:54:55,331 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-26 20:54:55,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 544 events. 305/544 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2758 event pairs, 65 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 968. Up to 454 conditions per place. [2023-08-26 20:54:55,334 INFO L140 encePairwiseOnDemand]: 268/270 looper letters, 34 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-08-26 20:54:55,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 177 flow [2023-08-26 20:54:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:54:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:54:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2023-08-26 20:54:55,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-26 20:54:55,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2023-08-26 20:54:55,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2023-08-26 20:54:55,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:54:55,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2023-08-26 20:54:55,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,339 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 80 flow. Second operand 3 states and 360 transitions. [2023-08-26 20:54:55,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 177 flow [2023-08-26 20:54:55,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:54:55,341 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 79 flow [2023-08-26 20:54:55,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-26 20:54:55,341 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-26 20:54:55,342 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 79 flow [2023-08-26 20:54:55,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:55,342 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:54:55,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 20:54:55,342 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 20:54:55,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash 887166139, now seen corresponding path program 1 times [2023-08-26 20:54:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:55,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61867702] [2023-08-26 20:54:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:54:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:54:55,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:54:55,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61867702] [2023-08-26 20:54:55,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61867702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:54:55,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:54:55,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:54:55,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906172096] [2023-08-26 20:54:55,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:54:55,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:54:55,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:54:55,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:54:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:54:55,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 270 [2023-08-26 20:54:55,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:54:55,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 270 [2023-08-26 20:54:55,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:54:55,465 INFO L124 PetriNetUnfolderBase]: 309/569 cut-off events. [2023-08-26 20:54:55,466 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-26 20:54:55,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 569 events. 309/569 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2900 event pairs, 24 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 927. Up to 423 conditions per place. [2023-08-26 20:54:55,469 INFO L140 encePairwiseOnDemand]: 268/270 looper letters, 32 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-26 20:54:55,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 166 flow [2023-08-26 20:54:55,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:54:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:54:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-26 20:54:55,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419753086419753 [2023-08-26 20:54:55,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-26 20:54:55,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-26 20:54:55,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:54:55,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-26 20:54:55,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,474 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 79 flow. Second operand 3 states and 358 transitions. [2023-08-26 20:54:55,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 166 flow [2023-08-26 20:54:55,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:54:55,476 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 78 flow [2023-08-26 20:54:55,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-08-26 20:54:55,476 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-26 20:54:55,477 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 78 flow [2023-08-26 20:54:55,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:55,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:54:55,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 20:54:55,477 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 20:54:55,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:55,478 INFO L85 PathProgramCache]: Analyzing trace with hash 887166272, now seen corresponding path program 1 times [2023-08-26 20:54:55,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:55,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909230913] [2023-08-26 20:54:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:55,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:54:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:54:55,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:54:55,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909230913] [2023-08-26 20:54:55,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909230913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:54:55,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:54:55,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:54:55,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627581809] [2023-08-26 20:54:55,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:54:55,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:54:55,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:54:55,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:54:55,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:54:55,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 270 [2023-08-26 20:54:55,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:54:55,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 270 [2023-08-26 20:54:55,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:54:55,603 INFO L124 PetriNetUnfolderBase]: 282/524 cut-off events. [2023-08-26 20:54:55,603 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-08-26 20:54:55,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 524 events. 282/524 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2581 event pairs, 24 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 863. Up to 378 conditions per place. [2023-08-26 20:54:55,607 INFO L140 encePairwiseOnDemand]: 268/270 looper letters, 31 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-26 20:54:55,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 162 flow [2023-08-26 20:54:55,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:54:55,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:54:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-26 20:54:55,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2023-08-26 20:54:55,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-26 20:54:55,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-26 20:54:55,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:54:55,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-26 20:54:55,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-26 20:54:55,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,612 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 78 flow. Second operand 3 states and 357 transitions. [2023-08-26 20:54:55,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 162 flow [2023-08-26 20:54:55,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:54:55,613 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 77 flow [2023-08-26 20:54:55,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-26 20:54:55,614 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-26 20:54:55,614 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 77 flow [2023-08-26 20:54:55,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:55,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:54:55,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 20:54:55,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 20:54:55,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:55,615 INFO L85 PathProgramCache]: Analyzing trace with hash 357191647, now seen corresponding path program 1 times [2023-08-26 20:54:55,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:55,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568740223] [2023-08-26 20:54:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:55,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:54:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:54:55,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:54:55,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568740223] [2023-08-26 20:54:55,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568740223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:54:55,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:54:55,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:54:55,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555287571] [2023-08-26 20:54:55,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:54:55,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:54:55,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:54:55,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:54:55,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:54:55,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 270 [2023-08-26 20:54:55,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:54:55,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 270 [2023-08-26 20:54:55,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:54:55,840 INFO L124 PetriNetUnfolderBase]: 474/860 cut-off events. [2023-08-26 20:54:55,840 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-26 20:54:55,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 860 events. 474/860 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4700 event pairs, 197 based on Foata normal form. 0/571 useless extension candidates. Maximal degree in co-relation 902. Up to 396 conditions per place. [2023-08-26 20:54:55,846 INFO L140 encePairwiseOnDemand]: 265/270 looper letters, 47 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-26 20:54:55,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 249 flow [2023-08-26 20:54:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:54:55,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:54:55,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2023-08-26 20:54:55,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2023-08-26 20:54:55,848 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2023-08-26 20:54:55,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2023-08-26 20:54:55,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:54:55,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2023-08-26 20:54:55,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,852 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,852 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 77 flow. Second operand 4 states and 468 transitions. [2023-08-26 20:54:55,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 249 flow [2023-08-26 20:54:55,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:54:55,854 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 99 flow [2023-08-26 20:54:55,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-26 20:54:55,854 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-08-26 20:54:55,854 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 99 flow [2023-08-26 20:54:55,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:55,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:54:55,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 20:54:55,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 20:54:55,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:55,856 INFO L85 PathProgramCache]: Analyzing trace with hash 357191600, now seen corresponding path program 1 times [2023-08-26 20:54:55,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:55,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871043032] [2023-08-26 20:54:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:55,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:54:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:54:55,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:54:55,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871043032] [2023-08-26 20:54:55,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871043032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:54:55,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:54:55,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:54:55,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840984105] [2023-08-26 20:54:55,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:54:55,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:54:55,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:54:55,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:54:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:54:55,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 270 [2023-08-26 20:54:55,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:55,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:54:55,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 270 [2023-08-26 20:54:55,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:54:56,102 INFO L124 PetriNetUnfolderBase]: 1062/1726 cut-off events. [2023-08-26 20:54:56,102 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2023-08-26 20:54:56,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4017 conditions, 1726 events. 1062/1726 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9564 event pairs, 382 based on Foata normal form. 48/1386 useless extension candidates. Maximal degree in co-relation 3696. Up to 951 conditions per place. [2023-08-26 20:54:56,114 INFO L140 encePairwiseOnDemand]: 262/270 looper letters, 44 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2023-08-26 20:54:56,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 273 flow [2023-08-26 20:54:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:54:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:54:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-26 20:54:56,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44320987654320987 [2023-08-26 20:54:56,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-26 20:54:56,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-26 20:54:56,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:54:56,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-26 20:54:56,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-26 20:54:56,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:56,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:56,119 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 99 flow. Second operand 3 states and 359 transitions. [2023-08-26 20:54:56,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 273 flow [2023-08-26 20:54:56,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 20:54:56,121 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 178 flow [2023-08-26 20:54:56,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-08-26 20:54:56,122 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2023-08-26 20:54:56,122 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 178 flow [2023-08-26 20:54:56,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:56,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:56,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:54:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 20:54:56,123 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 20:54:56,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:56,123 INFO L85 PathProgramCache]: Analyzing trace with hash 357191646, now seen corresponding path program 1 times [2023-08-26 20:54:56,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:56,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368199810] [2023-08-26 20:54:56,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:56,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:54:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:54:56,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:54:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368199810] [2023-08-26 20:54:56,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368199810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:54:56,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:54:56,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:54:56,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043561914] [2023-08-26 20:54:56,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:54:56,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:54:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:54:56,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:54:56,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:54:56,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 270 [2023-08-26 20:54:56,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:56,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:54:56,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 270 [2023-08-26 20:54:56,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:54:56,356 INFO L124 PetriNetUnfolderBase]: 682/1209 cut-off events. [2023-08-26 20:54:56,357 INFO L125 PetriNetUnfolderBase]: For 817/833 co-relation queries the response was YES. [2023-08-26 20:54:56,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3091 conditions, 1209 events. 682/1209 cut-off events. For 817/833 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6657 event pairs, 106 based on Foata normal form. 80/1054 useless extension candidates. Maximal degree in co-relation 2894. Up to 660 conditions per place. [2023-08-26 20:54:56,366 INFO L140 encePairwiseOnDemand]: 267/270 looper letters, 49 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-08-26 20:54:56,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 62 transitions, 322 flow [2023-08-26 20:54:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:54:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:54:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2023-08-26 20:54:56,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43148148148148147 [2023-08-26 20:54:56,368 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 466 transitions. [2023-08-26 20:54:56,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 466 transitions. [2023-08-26 20:54:56,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:54:56,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 466 transitions. [2023-08-26 20:54:56,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:56,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:56,372 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:56,372 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 178 flow. Second operand 4 states and 466 transitions. [2023-08-26 20:54:56,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 62 transitions, 322 flow [2023-08-26 20:54:56,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 302 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 20:54:56,375 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 134 flow [2023-08-26 20:54:56,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-08-26 20:54:56,376 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2023-08-26 20:54:56,376 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 134 flow [2023-08-26 20:54:56,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:56,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:56,377 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 20:54:56,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 20:54:56,377 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-26 20:54:56,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:56,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2140123941, now seen corresponding path program 1 times [2023-08-26 20:54:56,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:56,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542182392] [2023-08-26 20:54:56,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:56,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 20:54:56,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 20:54:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 20:54:56,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 20:54:56,394 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 20:54:56,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-08-26 20:54:56,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-26 20:54:56,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-26 20:54:56,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-26 20:54:56,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (11 of 16 remaining) [2023-08-26 20:54:56,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-26 20:54:56,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-08-26 20:54:56,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-08-26 20:54:56,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-08-26 20:54:56,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (6 of 16 remaining) [2023-08-26 20:54:56,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-26 20:54:56,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-26 20:54:56,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-26 20:54:56,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-26 20:54:56,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (1 of 16 remaining) [2023-08-26 20:54:56,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-26 20:54:56,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 20:54:56,396 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:54:56,396 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 20:54:56,396 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 20:54:56,418 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 20:54:56,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 186 transitions, 393 flow [2023-08-26 20:54:56,441 INFO L124 PetriNetUnfolderBase]: 22/220 cut-off events. [2023-08-26 20:54:56,442 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 20:54:56,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 220 events. 22/220 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 557 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-26 20:54:56,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 186 transitions, 393 flow [2023-08-26 20:54:56,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 186 transitions, 393 flow [2023-08-26 20:54:56,446 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 20:54:56,446 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 186 transitions, 393 flow [2023-08-26 20:54:56,447 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 186 transitions, 393 flow [2023-08-26 20:54:56,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 186 transitions, 393 flow [2023-08-26 20:54:56,468 INFO L124 PetriNetUnfolderBase]: 22/220 cut-off events. [2023-08-26 20:54:56,468 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 20:54:56,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 220 events. 22/220 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 557 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-26 20:54:56,479 INFO L119 LiptonReduction]: Number of co-enabled transitions 19200 [2023-08-26 20:54:59,653 INFO L134 LiptonReduction]: Checked pairs total: 31944 [2023-08-26 20:54:59,654 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-08-26 20:54:59,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 20:54:59,657 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;@40d8521c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 20:54:59,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-26 20:54:59,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 20:54:59,659 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-26 20:54:59,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 20:54:59,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:54:59,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 20:54:59,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:54:59,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:54:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1101424787, now seen corresponding path program 1 times [2023-08-26 20:54:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:54:59,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451536378] [2023-08-26 20:54:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:54:59,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:54:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:54:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:54:59,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:54:59,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451536378] [2023-08-26 20:54:59,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451536378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:54:59,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:54:59,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:54:59,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513266871] [2023-08-26 20:54:59,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:54:59,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:54:59,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:54:59,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:54:59,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:54:59,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 376 [2023-08-26 20:54:59,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:54:59,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:54:59,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 376 [2023-08-26 20:54:59,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:00,334 INFO L124 PetriNetUnfolderBase]: 5665/8416 cut-off events. [2023-08-26 20:55:00,334 INFO L125 PetriNetUnfolderBase]: For 646/646 co-relation queries the response was YES. [2023-08-26 20:55:00,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16517 conditions, 8416 events. 5665/8416 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 56059 event pairs, 279 based on Foata normal form. 0/4950 useless extension candidates. Maximal degree in co-relation 5868. Up to 7098 conditions per place. [2023-08-26 20:55:00,403 INFO L140 encePairwiseOnDemand]: 373/376 looper letters, 57 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-08-26 20:55:00,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 293 flow [2023-08-26 20:55:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2023-08-26 20:55:00,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45567375886524825 [2023-08-26 20:55:00,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2023-08-26 20:55:00,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2023-08-26 20:55:00,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:00,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2023-08-26 20:55:00,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:00,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:00,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:00,411 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 123 flow. Second operand 3 states and 514 transitions. [2023-08-26 20:55:00,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 293 flow [2023-08-26 20:55:00,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 285 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-26 20:55:00,413 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 115 flow [2023-08-26 20:55:00,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-26 20:55:00,414 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-08-26 20:55:00,414 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 115 flow [2023-08-26 20:55:00,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:00,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:00,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 20:55:00,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 20:55:00,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:00,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:00,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1101424936, now seen corresponding path program 1 times [2023-08-26 20:55:00,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:00,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132828764] [2023-08-26 20:55:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:00,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:00,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132828764] [2023-08-26 20:55:00,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132828764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:00,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:00,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:00,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792879482] [2023-08-26 20:55:00,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:00,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:00,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:00,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:00,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:00,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 376 [2023-08-26 20:55:00,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:00,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:00,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 376 [2023-08-26 20:55:00,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:01,040 INFO L124 PetriNetUnfolderBase]: 4987/7244 cut-off events. [2023-08-26 20:55:01,040 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2023-08-26 20:55:01,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14657 conditions, 7244 events. 4987/7244 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 42688 event pairs, 1487 based on Foata normal form. 0/4346 useless extension candidates. Maximal degree in co-relation 14534. Up to 6334 conditions per place. [2023-08-26 20:55:01,081 INFO L140 encePairwiseOnDemand]: 374/376 looper letters, 56 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-26 20:55:01,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 283 flow [2023-08-26 20:55:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-26 20:55:01,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530141843971631 [2023-08-26 20:55:01,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-26 20:55:01,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-26 20:55:01,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:01,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-26 20:55:01,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:01,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:01,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:01,087 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 115 flow. Second operand 3 states and 511 transitions. [2023-08-26 20:55:01,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 283 flow [2023-08-26 20:55:01,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:01,090 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 114 flow [2023-08-26 20:55:01,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-08-26 20:55:01,091 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-08-26 20:55:01,091 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 114 flow [2023-08-26 20:55:01,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:01,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:01,092 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:01,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 20:55:01,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:01,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:01,093 INFO L85 PathProgramCache]: Analyzing trace with hash 779592301, now seen corresponding path program 1 times [2023-08-26 20:55:01,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:01,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960460173] [2023-08-26 20:55:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:01,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:55:01,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:01,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960460173] [2023-08-26 20:55:01,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960460173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:01,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:01,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:01,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020890657] [2023-08-26 20:55:01,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:01,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:01,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:01,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:01,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 376 [2023-08-26 20:55:01,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:01,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:01,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 376 [2023-08-26 20:55:01,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:01,716 INFO L124 PetriNetUnfolderBase]: 5097/7592 cut-off events. [2023-08-26 20:55:01,716 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2023-08-26 20:55:01,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15229 conditions, 7592 events. 5097/7592 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 48544 event pairs, 265 based on Foata normal form. 0/4580 useless extension candidates. Maximal degree in co-relation 13093. Up to 6354 conditions per place. [2023-08-26 20:55:01,760 INFO L140 encePairwiseOnDemand]: 374/376 looper letters, 54 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-08-26 20:55:01,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 272 flow [2023-08-26 20:55:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-26 20:55:01,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512411347517731 [2023-08-26 20:55:01,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-26 20:55:01,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-26 20:55:01,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:01,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-26 20:55:01,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:01,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:01,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:01,766 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 114 flow. Second operand 3 states and 509 transitions. [2023-08-26 20:55:01,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 272 flow [2023-08-26 20:55:01,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:01,770 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 113 flow [2023-08-26 20:55:01,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-08-26 20:55:01,771 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-08-26 20:55:01,771 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 113 flow [2023-08-26 20:55:01,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:01,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:01,771 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:01,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 20:55:01,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:01,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:01,772 INFO L85 PathProgramCache]: Analyzing trace with hash 779592401, now seen corresponding path program 1 times [2023-08-26 20:55:01,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:01,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453397988] [2023-08-26 20:55:01,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:01,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:55:01,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:01,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453397988] [2023-08-26 20:55:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453397988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:01,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:01,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:01,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761371226] [2023-08-26 20:55:01,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:01,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:01,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:01,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:01,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:01,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 376 [2023-08-26 20:55:01,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:01,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:01,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 376 [2023-08-26 20:55:01,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:02,330 INFO L124 PetriNetUnfolderBase]: 4611/6908 cut-off events. [2023-08-26 20:55:02,331 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2023-08-26 20:55:02,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13988 conditions, 6908 events. 4611/6908 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 43376 event pairs, 265 based on Foata normal form. 0/4274 useless extension candidates. Maximal degree in co-relation 12029. Up to 5670 conditions per place. [2023-08-26 20:55:02,367 INFO L140 encePairwiseOnDemand]: 374/376 looper letters, 53 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-08-26 20:55:02,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 268 flow [2023-08-26 20:55:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-08-26 20:55:02,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450354609929078 [2023-08-26 20:55:02,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-08-26 20:55:02,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-08-26 20:55:02,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:02,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-08-26 20:55:02,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:02,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:02,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:02,373 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 113 flow. Second operand 3 states and 508 transitions. [2023-08-26 20:55:02,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 268 flow [2023-08-26 20:55:02,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:02,375 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 112 flow [2023-08-26 20:55:02,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, 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=112, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-08-26 20:55:02,375 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-08-26 20:55:02,376 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 112 flow [2023-08-26 20:55:02,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:02,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:02,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:02,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 20:55:02,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:02,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:02,377 INFO L85 PathProgramCache]: Analyzing trace with hash -832351756, now seen corresponding path program 1 times [2023-08-26 20:55:02,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:02,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873787278] [2023-08-26 20:55:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:02,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:02,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:02,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873787278] [2023-08-26 20:55:02,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873787278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:02,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:02,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:02,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382195649] [2023-08-26 20:55:02,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:02,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:02,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:02,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:02,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:02,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 376 [2023-08-26 20:55:02,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:02,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:02,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 376 [2023-08-26 20:55:02,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:02,891 INFO L124 PetriNetUnfolderBase]: 4125/6201 cut-off events. [2023-08-26 20:55:02,891 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2023-08-26 20:55:02,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12714 conditions, 6201 events. 4125/6201 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 39663 event pairs, 249 based on Foata normal form. 0/3946 useless extension candidates. Maximal degree in co-relation 12600. Up to 5016 conditions per place. [2023-08-26 20:55:02,928 INFO L140 encePairwiseOnDemand]: 374/376 looper letters, 53 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-08-26 20:55:02,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 275 flow [2023-08-26 20:55:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:02,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:02,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-26 20:55:02,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530141843971631 [2023-08-26 20:55:02,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-26 20:55:02,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-26 20:55:02,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:02,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-26 20:55:02,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:02,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:02,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:02,934 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 112 flow. Second operand 3 states and 511 transitions. [2023-08-26 20:55:02,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 275 flow [2023-08-26 20:55:02,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:02,935 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 111 flow [2023-08-26 20:55:02,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-08-26 20:55:02,937 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-08-26 20:55:02,937 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 111 flow [2023-08-26 20:55:02,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:02,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:02,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:02,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 20:55:02,937 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:02,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:02,938 INFO L85 PathProgramCache]: Analyzing trace with hash -832351757, now seen corresponding path program 1 times [2023-08-26 20:55:02,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:02,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217616462] [2023-08-26 20:55:02,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:02,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:02,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:02,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217616462] [2023-08-26 20:55:02,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217616462] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:02,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:02,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:55:02,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165724851] [2023-08-26 20:55:02,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:02,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:55:02,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:55:02,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:55:02,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 376 [2023-08-26 20:55:02,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:02,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:02,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 376 [2023-08-26 20:55:02,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:03,792 INFO L124 PetriNetUnfolderBase]: 6683/10111 cut-off events. [2023-08-26 20:55:03,792 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2023-08-26 20:55:03,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20652 conditions, 10111 events. 6683/10111 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 65872 event pairs, 3385 based on Foata normal form. 0/6571 useless extension candidates. Maximal degree in co-relation 10645. Up to 5508 conditions per place. [2023-08-26 20:55:03,859 INFO L140 encePairwiseOnDemand]: 372/376 looper letters, 57 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-26 20:55:03,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 72 transitions, 295 flow [2023-08-26 20:55:03,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:03,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:03,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-26 20:55:03,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4450354609929078 [2023-08-26 20:55:03,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-26 20:55:03,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-26 20:55:03,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:03,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-26 20:55:03,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:03,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:03,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:03,865 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 111 flow. Second operand 3 states and 502 transitions. [2023-08-26 20:55:03,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 72 transitions, 295 flow [2023-08-26 20:55:03,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:03,867 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 124 flow [2023-08-26 20:55:03,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-08-26 20:55:03,868 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-08-26 20:55:03,868 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 124 flow [2023-08-26 20:55:03,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:03,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:03,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:03,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 20:55:03,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:03,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:03,869 INFO L85 PathProgramCache]: Analyzing trace with hash -832351816, now seen corresponding path program 1 times [2023-08-26 20:55:03,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:03,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746001475] [2023-08-26 20:55:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:03,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:03,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:03,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746001475] [2023-08-26 20:55:03,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746001475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:03,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:03,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:03,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906998759] [2023-08-26 20:55:03,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:03,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:03,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:03,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:03,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:03,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 376 [2023-08-26 20:55:03,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:03,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:03,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 376 [2023-08-26 20:55:03,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:05,622 INFO L124 PetriNetUnfolderBase]: 18574/25704 cut-off events. [2023-08-26 20:55:05,622 INFO L125 PetriNetUnfolderBase]: For 2508/2508 co-relation queries the response was YES. [2023-08-26 20:55:05,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57175 conditions, 25704 events. 18574/25704 cut-off events. For 2508/2508 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 158788 event pairs, 8804 based on Foata normal form. 576/18784 useless extension candidates. Maximal degree in co-relation 53733. Up to 16767 conditions per place. [2023-08-26 20:55:05,750 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 68 selfloop transitions, 8 changer transitions 0/80 dead transitions. [2023-08-26 20:55:05,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 365 flow [2023-08-26 20:55:05,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:05,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-26 20:55:05,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44148936170212766 [2023-08-26 20:55:05,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-26 20:55:05,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-26 20:55:05,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:05,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-26 20:55:05,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:05,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:05,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:05,756 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 124 flow. Second operand 3 states and 498 transitions. [2023-08-26 20:55:05,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 365 flow [2023-08-26 20:55:05,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 80 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:05,760 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 186 flow [2023-08-26 20:55:05,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-26 20:55:05,760 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2023-08-26 20:55:05,760 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 186 flow [2023-08-26 20:55:05,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:05,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:05,761 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:05,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 20:55:05,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:05,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:05,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1979115030, now seen corresponding path program 1 times [2023-08-26 20:55:05,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:05,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168516734] [2023-08-26 20:55:05,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:05,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-26 20:55:05,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:05,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168516734] [2023-08-26 20:55:05,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168516734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:05,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:05,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:05,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837755229] [2023-08-26 20:55:05,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:05,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:05,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:05,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:05,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:05,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 376 [2023-08-26 20:55:05,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:05,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:05,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 376 [2023-08-26 20:55:05,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:07,068 INFO L124 PetriNetUnfolderBase]: 11155/16435 cut-off events. [2023-08-26 20:55:07,068 INFO L125 PetriNetUnfolderBase]: For 6888/6899 co-relation queries the response was YES. [2023-08-26 20:55:07,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39482 conditions, 16435 events. 11155/16435 cut-off events. For 6888/6899 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 107809 event pairs, 1130 based on Foata normal form. 2/11595 useless extension candidates. Maximal degree in co-relation 37044. Up to 12763 conditions per place. [2023-08-26 20:55:07,153 INFO L140 encePairwiseOnDemand]: 374/376 looper letters, 59 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-08-26 20:55:07,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 397 flow [2023-08-26 20:55:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-08-26 20:55:07,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44680851063829785 [2023-08-26 20:55:07,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-08-26 20:55:07,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-08-26 20:55:07,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:07,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-08-26 20:55:07,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:07,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:07,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:07,159 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 186 flow. Second operand 3 states and 504 transitions. [2023-08-26 20:55:07,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 397 flow [2023-08-26 20:55:07,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 20:55:07,167 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 170 flow [2023-08-26 20:55:07,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2023-08-26 20:55:07,167 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2023-08-26 20:55:07,167 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 170 flow [2023-08-26 20:55:07,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:07,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:07,168 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:07,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 20:55:07,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:07,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:07,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1979114819, now seen corresponding path program 1 times [2023-08-26 20:55:07,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:07,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212126771] [2023-08-26 20:55:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:07,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-26 20:55:07,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:07,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212126771] [2023-08-26 20:55:07,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212126771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:07,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:07,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:07,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501527362] [2023-08-26 20:55:07,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:07,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:07,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:07,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:07,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 376 [2023-08-26 20:55:07,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:07,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:07,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 376 [2023-08-26 20:55:07,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:08,151 INFO L124 PetriNetUnfolderBase]: 10178/15076 cut-off events. [2023-08-26 20:55:08,151 INFO L125 PetriNetUnfolderBase]: For 4837/4848 co-relation queries the response was YES. [2023-08-26 20:55:08,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35456 conditions, 15076 events. 10178/15076 cut-off events. For 4837/4848 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 98012 event pairs, 1126 based on Foata normal form. 2/10834 useless extension candidates. Maximal degree in co-relation 33207. Up to 11404 conditions per place. [2023-08-26 20:55:08,226 INFO L140 encePairwiseOnDemand]: 374/376 looper letters, 58 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-08-26 20:55:08,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 73 transitions, 371 flow [2023-08-26 20:55:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:08,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-26 20:55:08,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44592198581560283 [2023-08-26 20:55:08,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-26 20:55:08,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-26 20:55:08,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:08,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-26 20:55:08,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:08,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:08,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:08,232 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 170 flow. Second operand 3 states and 503 transitions. [2023-08-26 20:55:08,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 73 transitions, 371 flow [2023-08-26 20:55:08,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:08,241 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 169 flow [2023-08-26 20:55:08,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=56, PETRI_TRANSITIONS=50} [2023-08-26 20:55:08,241 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2023-08-26 20:55:08,241 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 169 flow [2023-08-26 20:55:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:08,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:08,242 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:08,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 20:55:08,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:08,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:08,242 INFO L85 PathProgramCache]: Analyzing trace with hash 396871420, now seen corresponding path program 1 times [2023-08-26 20:55:08,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:08,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865645316] [2023-08-26 20:55:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:55:08,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:08,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865645316] [2023-08-26 20:55:08,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865645316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:08,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:08,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:55:08,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458969424] [2023-08-26 20:55:08,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:08,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:55:08,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:55:08,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:55:08,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 376 [2023-08-26 20:55:08,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 149.25) internal successors, (597), 4 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:08,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:08,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 376 [2023-08-26 20:55:08,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:09,962 INFO L124 PetriNetUnfolderBase]: 16273/23773 cut-off events. [2023-08-26 20:55:09,962 INFO L125 PetriNetUnfolderBase]: For 7754/7754 co-relation queries the response was YES. [2023-08-26 20:55:09,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56469 conditions, 23773 events. 16273/23773 cut-off events. For 7754/7754 co-relation queries the response was YES. Maximal size of possible extension queue 1034. Compared 159289 event pairs, 6993 based on Foata normal form. 0/17210 useless extension candidates. Maximal degree in co-relation 52828. Up to 11400 conditions per place. [2023-08-26 20:55:10,088 INFO L140 encePairwiseOnDemand]: 371/376 looper letters, 87 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2023-08-26 20:55:10,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 547 flow [2023-08-26 20:55:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:55:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:55:10,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 665 transitions. [2023-08-26 20:55:10,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421542553191489 [2023-08-26 20:55:10,094 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 665 transitions. [2023-08-26 20:55:10,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 665 transitions. [2023-08-26 20:55:10,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:10,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 665 transitions. [2023-08-26 20:55:10,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:10,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:10,099 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:10,099 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 169 flow. Second operand 4 states and 665 transitions. [2023-08-26 20:55:10,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 547 flow [2023-08-26 20:55:10,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 104 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:10,105 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 191 flow [2023-08-26 20:55:10,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-08-26 20:55:10,106 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2023-08-26 20:55:10,106 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 191 flow [2023-08-26 20:55:10,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.25) internal successors, (597), 4 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:10,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:10,106 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:10,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 20:55:10,106 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:10,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:10,107 INFO L85 PathProgramCache]: Analyzing trace with hash 396871341, now seen corresponding path program 1 times [2023-08-26 20:55:10,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:10,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551138220] [2023-08-26 20:55:10,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:10,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:55:10,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:10,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551138220] [2023-08-26 20:55:10,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551138220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:10,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:10,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:10,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688908445] [2023-08-26 20:55:10,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:10,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:10,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:10,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:10,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 376 [2023-08-26 20:55:10,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:10,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:10,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 376 [2023-08-26 20:55:10,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:13,605 INFO L124 PetriNetUnfolderBase]: 41652/57194 cut-off events. [2023-08-26 20:55:13,605 INFO L125 PetriNetUnfolderBase]: For 23281/23281 co-relation queries the response was YES. [2023-08-26 20:55:13,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148251 conditions, 57194 events. 41652/57194 cut-off events. For 23281/23281 co-relation queries the response was YES. Maximal size of possible extension queue 2252. Compared 375323 event pairs, 17536 based on Foata normal form. 1152/48051 useless extension candidates. Maximal degree in co-relation 140369. Up to 34833 conditions per place. [2023-08-26 20:55:14,109 INFO L140 encePairwiseOnDemand]: 367/376 looper letters, 76 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2023-08-26 20:55:14,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 91 transitions, 512 flow [2023-08-26 20:55:14,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-08-26 20:55:14,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43882978723404253 [2023-08-26 20:55:14,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-08-26 20:55:14,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-08-26 20:55:14,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:14,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-08-26 20:55:14,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:14,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:14,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:14,115 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 191 flow. Second operand 3 states and 495 transitions. [2023-08-26 20:55:14,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 91 transitions, 512 flow [2023-08-26 20:55:14,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 512 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 20:55:14,122 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 296 flow [2023-08-26 20:55:14,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-08-26 20:55:14,123 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-08-26 20:55:14,123 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 296 flow [2023-08-26 20:55:14,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:14,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:14,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:14,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 20:55:14,124 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:14,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:14,124 INFO L85 PathProgramCache]: Analyzing trace with hash 396871419, now seen corresponding path program 1 times [2023-08-26 20:55:14,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:14,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790707354] [2023-08-26 20:55:14,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:14,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:55:14,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:14,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790707354] [2023-08-26 20:55:14,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790707354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:14,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:14,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:14,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675538529] [2023-08-26 20:55:14,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:14,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:14,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:14,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:14,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:14,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 376 [2023-08-26 20:55:14,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:14,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:14,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 376 [2023-08-26 20:55:14,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:16,659 INFO L124 PetriNetUnfolderBase]: 23529/34345 cut-off events. [2023-08-26 20:55:16,659 INFO L125 PetriNetUnfolderBase]: For 31273/31991 co-relation queries the response was YES. [2023-08-26 20:55:16,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95947 conditions, 34345 events. 23529/34345 cut-off events. For 31273/31991 co-relation queries the response was YES. Maximal size of possible extension queue 1515. Compared 244011 event pairs, 3925 based on Foata normal form. 1858/30359 useless extension candidates. Maximal degree in co-relation 90487. Up to 29068 conditions per place. [2023-08-26 20:55:16,930 INFO L140 encePairwiseOnDemand]: 374/376 looper letters, 63 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-26 20:55:16,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 486 flow [2023-08-26 20:55:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-26 20:55:16,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44858156028368795 [2023-08-26 20:55:16,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-26 20:55:16,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-26 20:55:16,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:16,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-26 20:55:16,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:16,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:16,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:16,936 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 296 flow. Second operand 3 states and 506 transitions. [2023-08-26 20:55:16,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 486 flow [2023-08-26 20:55:17,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 460 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 20:55:17,098 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 242 flow [2023-08-26 20:55:17,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-08-26 20:55:17,098 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2023-08-26 20:55:17,098 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 242 flow [2023-08-26 20:55:17,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:17,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:17,099 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:17,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 20:55:17,099 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:17,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:17,100 INFO L85 PathProgramCache]: Analyzing trace with hash -810203670, now seen corresponding path program 1 times [2023-08-26 20:55:17,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:17,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840056516] [2023-08-26 20:55:17,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:17,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:17,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:17,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840056516] [2023-08-26 20:55:17,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840056516] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:55:17,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501098857] [2023-08-26 20:55:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:17,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:55:17,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:55:17,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 20:55:17,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 20:55:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:17,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 20:55:17,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:55:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:17,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 20:55:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:17,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501098857] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 20:55:17,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 20:55:17,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-26 20:55:17,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176311055] [2023-08-26 20:55:17,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 20:55:17,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 20:55:17,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:17,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 20:55:17,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-26 20:55:17,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 376 [2023-08-26 20:55:17,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 242 flow. Second operand has 8 states, 8 states have (on average 149.375) internal successors, (1195), 8 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:17,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:17,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 376 [2023-08-26 20:55:17,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:19,924 INFO L124 PetriNetUnfolderBase]: 25510/37334 cut-off events. [2023-08-26 20:55:19,924 INFO L125 PetriNetUnfolderBase]: For 19359/19786 co-relation queries the response was YES. [2023-08-26 20:55:20,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97756 conditions, 37334 events. 25510/37334 cut-off events. For 19359/19786 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 271361 event pairs, 6140 based on Foata normal form. 12/31885 useless extension candidates. Maximal degree in co-relation 85628. Up to 16030 conditions per place. [2023-08-26 20:55:20,217 INFO L140 encePairwiseOnDemand]: 372/376 looper letters, 88 selfloop transitions, 7 changer transitions 0/112 dead transitions. [2023-08-26 20:55:20,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 112 transitions, 644 flow [2023-08-26 20:55:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:55:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:55:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 665 transitions. [2023-08-26 20:55:20,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421542553191489 [2023-08-26 20:55:20,219 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 665 transitions. [2023-08-26 20:55:20,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 665 transitions. [2023-08-26 20:55:20,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:20,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 665 transitions. [2023-08-26 20:55:20,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:20,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:20,222 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:20,222 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 242 flow. Second operand 4 states and 665 transitions. [2023-08-26 20:55:20,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 112 transitions, 644 flow [2023-08-26 20:55:20,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 112 transitions, 641 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:20,228 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 260 flow [2023-08-26 20:55:20,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-26 20:55:20,229 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2023-08-26 20:55:20,229 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 260 flow [2023-08-26 20:55:20,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 149.375) internal successors, (1195), 8 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:20,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:20,229 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 20:55:20,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 20:55:20,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-26 20:55:20,435 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-26 20:55:20,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:20,435 INFO L85 PathProgramCache]: Analyzing trace with hash 729949084, now seen corresponding path program 1 times [2023-08-26 20:55:20,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:20,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445910967] [2023-08-26 20:55:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:20,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 20:55:20,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 20:55:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 20:55:20,455 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 20:55:20,456 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 20:55:20,456 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-26 20:55:20,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-26 20:55:20,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-26 20:55:20,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-26 20:55:20,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (16 of 21 remaining) [2023-08-26 20:55:20,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-26 20:55:20,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-26 20:55:20,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-26 20:55:20,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-26 20:55:20,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (11 of 21 remaining) [2023-08-26 20:55:20,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-26 20:55:20,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-26 20:55:20,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-26 20:55:20,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-26 20:55:20,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (6 of 21 remaining) [2023-08-26 20:55:20,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-26 20:55:20,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-26 20:55:20,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-26 20:55:20,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-26 20:55:20,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONASSERT (1 of 21 remaining) [2023-08-26 20:55:20,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-26 20:55:20,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-26 20:55:20,459 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:20,459 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 20:55:20,459 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 20:55:20,488 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 20:55:20,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 237 transitions, 506 flow [2023-08-26 20:55:20,528 INFO L124 PetriNetUnfolderBase]: 29/283 cut-off events. [2023-08-26 20:55:20,528 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-26 20:55:20,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 283 events. 29/283 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 834 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 228. Up to 10 conditions per place. [2023-08-26 20:55:20,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 237 transitions, 506 flow [2023-08-26 20:55:20,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 237 transitions, 506 flow [2023-08-26 20:55:20,535 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 20:55:20,536 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 237 transitions, 506 flow [2023-08-26 20:55:20,536 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 237 transitions, 506 flow [2023-08-26 20:55:20,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 237 transitions, 506 flow [2023-08-26 20:55:20,570 INFO L124 PetriNetUnfolderBase]: 29/283 cut-off events. [2023-08-26 20:55:20,571 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-26 20:55:20,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 283 events. 29/283 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 834 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 228. Up to 10 conditions per place. [2023-08-26 20:55:20,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 35800 [2023-08-26 20:55:24,330 INFO L134 LiptonReduction]: Checked pairs total: 56351 [2023-08-26 20:55:24,331 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-08-26 20:55:24,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 20:55:24,333 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;@40d8521c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 20:55:24,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-26 20:55:24,334 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 20:55:24,334 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 20:55:24,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 20:55:24,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:24,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 20:55:24,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 20:55:24,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1596341101, now seen corresponding path program 1 times [2023-08-26 20:55:24,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:24,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713230873] [2023-08-26 20:55:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:24,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:24,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713230873] [2023-08-26 20:55:24,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713230873] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:24,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:24,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:24,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055400385] [2023-08-26 20:55:24,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:24,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:24,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:24,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:24,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:24,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 473 [2023-08-26 20:55:24,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:24,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:24,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 473 [2023-08-26 20:55:24,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:30,790 INFO L124 PetriNetUnfolderBase]: 78865/106359 cut-off events. [2023-08-26 20:55:30,790 INFO L125 PetriNetUnfolderBase]: For 11017/11017 co-relation queries the response was YES. [2023-08-26 20:55:30,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210720 conditions, 106359 events. 78865/106359 cut-off events. For 11017/11017 co-relation queries the response was YES. Maximal size of possible extension queue 4189. Compared 768014 event pairs, 4779 based on Foata normal form. 0/60235 useless extension candidates. Maximal degree in co-relation 17157. Up to 90998 conditions per place. [2023-08-26 20:55:31,291 INFO L140 encePairwiseOnDemand]: 470/473 looper letters, 79 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-08-26 20:55:31,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 98 transitions, 409 flow [2023-08-26 20:55:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:31,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-08-26 20:55:31,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686398872445384 [2023-08-26 20:55:31,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-08-26 20:55:31,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-08-26 20:55:31,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:31,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-08-26 20:55:31,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:31,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:31,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:31,297 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 164 flow. Second operand 3 states and 665 transitions. [2023-08-26 20:55:31,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 98 transitions, 409 flow [2023-08-26 20:55:31,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 391 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-26 20:55:31,301 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 150 flow [2023-08-26 20:55:31,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2023-08-26 20:55:31,302 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2023-08-26 20:55:31,302 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 150 flow [2023-08-26 20:55:31,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:31,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:31,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 20:55:31,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-26 20:55:31,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 20:55:31,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:31,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1596341255, now seen corresponding path program 1 times [2023-08-26 20:55:31,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:31,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727696298] [2023-08-26 20:55:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:31,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:31,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:31,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727696298] [2023-08-26 20:55:31,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727696298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:31,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:31,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:31,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849646369] [2023-08-26 20:55:31,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:31,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:31,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:31,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:31,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 473 [2023-08-26 20:55:31,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:31,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:31,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 473 [2023-08-26 20:55:31,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:36,319 INFO L124 PetriNetUnfolderBase]: 69519/91383 cut-off events. [2023-08-26 20:55:36,319 INFO L125 PetriNetUnfolderBase]: For 5200/5200 co-relation queries the response was YES. [2023-08-26 20:55:36,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185460 conditions, 91383 events. 69519/91383 cut-off events. For 5200/5200 co-relation queries the response was YES. Maximal size of possible extension queue 3534. Compared 578040 event pairs, 23619 based on Foata normal form. 0/52612 useless extension candidates. Maximal degree in co-relation 185336. Up to 81134 conditions per place. [2023-08-26 20:55:36,789 INFO L140 encePairwiseOnDemand]: 471/473 looper letters, 78 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-26 20:55:36,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 389 flow [2023-08-26 20:55:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:36,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2023-08-26 20:55:36,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665257223396758 [2023-08-26 20:55:36,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2023-08-26 20:55:36,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2023-08-26 20:55:36,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:36,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2023-08-26 20:55:36,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:36,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:36,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:36,796 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 150 flow. Second operand 3 states and 662 transitions. [2023-08-26 20:55:36,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 389 flow [2023-08-26 20:55:36,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:36,799 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 149 flow [2023-08-26 20:55:36,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-08-26 20:55:36,800 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2023-08-26 20:55:36,800 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 149 flow [2023-08-26 20:55:36,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:36,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:36,800 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:36,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-26 20:55:36,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 20:55:36,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1780142443, now seen corresponding path program 1 times [2023-08-26 20:55:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:36,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254738605] [2023-08-26 20:55:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:36,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:55:36,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:36,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254738605] [2023-08-26 20:55:36,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254738605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:36,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:36,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:36,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627099837] [2023-08-26 20:55:36,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:36,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:36,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:36,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 473 [2023-08-26 20:55:36,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:36,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:36,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 473 [2023-08-26 20:55:36,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:41,874 INFO L124 PetriNetUnfolderBase]: 69753/92066 cut-off events. [2023-08-26 20:55:41,874 INFO L125 PetriNetUnfolderBase]: For 5186/5186 co-relation queries the response was YES. [2023-08-26 20:55:42,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188358 conditions, 92066 events. 69753/92066 cut-off events. For 5186/5186 co-relation queries the response was YES. Maximal size of possible extension queue 3591. Compared 593324 event pairs, 16679 based on Foata normal form. 0/53201 useless extension candidates. Maximal degree in co-relation 163429. Up to 81864 conditions per place. [2023-08-26 20:55:42,512 INFO L140 encePairwiseOnDemand]: 471/473 looper letters, 76 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-26 20:55:42,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 378 flow [2023-08-26 20:55:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-08-26 20:55:42,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2023-08-26 20:55:42,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-08-26 20:55:42,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-08-26 20:55:42,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:42,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-08-26 20:55:42,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:42,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:42,518 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:42,518 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 149 flow. Second operand 3 states and 660 transitions. [2023-08-26 20:55:42,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 378 flow [2023-08-26 20:55:42,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 94 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:42,523 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 148 flow [2023-08-26 20:55:42,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-26 20:55:42,523 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2023-08-26 20:55:42,523 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 148 flow [2023-08-26 20:55:42,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:42,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:42,524 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:42,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-26 20:55:42,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 20:55:42,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1780142572, now seen corresponding path program 1 times [2023-08-26 20:55:42,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:42,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319116328] [2023-08-26 20:55:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:42,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 20:55:42,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:42,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319116328] [2023-08-26 20:55:42,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319116328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:42,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:42,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:42,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175322487] [2023-08-26 20:55:42,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:42,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:42,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:42,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:42,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:42,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 473 [2023-08-26 20:55:42,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:42,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:42,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 473 [2023-08-26 20:55:42,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:47,418 INFO L124 PetriNetUnfolderBase]: 64101/86864 cut-off events. [2023-08-26 20:55:47,418 INFO L125 PetriNetUnfolderBase]: For 4660/4660 co-relation queries the response was YES. [2023-08-26 20:55:47,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175539 conditions, 86864 events. 64101/86864 cut-off events. For 4660/4660 co-relation queries the response was YES. Maximal size of possible extension queue 3363. Compared 614197 event pairs, 4295 based on Foata normal form. 0/51549 useless extension candidates. Maximal degree in co-relation 152429. Up to 72990 conditions per place. [2023-08-26 20:55:47,889 INFO L140 encePairwiseOnDemand]: 471/473 looper letters, 75 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-08-26 20:55:47,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 374 flow [2023-08-26 20:55:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:55:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:55:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-26 20:55:47,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46441155743481327 [2023-08-26 20:55:47,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-26 20:55:47,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-26 20:55:47,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:47,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-26 20:55:47,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:47,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:47,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:47,895 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 148 flow. Second operand 3 states and 659 transitions. [2023-08-26 20:55:47,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 374 flow [2023-08-26 20:55:47,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:47,901 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 147 flow [2023-08-26 20:55:47,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-26 20:55:47,902 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2023-08-26 20:55:47,902 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 147 flow [2023-08-26 20:55:47,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:47,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:47,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:47,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-26 20:55:47,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 20:55:47,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:47,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1306128520, now seen corresponding path program 1 times [2023-08-26 20:55:47,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:47,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927904737] [2023-08-26 20:55:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:47,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:47,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:47,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927904737] [2023-08-26 20:55:47,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927904737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:47,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:47,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:55:47,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895279931] [2023-08-26 20:55:47,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:47,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:55:47,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:47,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:55:47,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:55:47,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 473 [2023-08-26 20:55:47,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:47,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:47,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 473 [2023-08-26 20:55:47,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:55:56,587 INFO L124 PetriNetUnfolderBase]: 106749/146553 cut-off events. [2023-08-26 20:55:56,588 INFO L125 PetriNetUnfolderBase]: For 7774/7774 co-relation queries the response was YES. [2023-08-26 20:55:56,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295399 conditions, 146553 events. 106749/146553 cut-off events. For 7774/7774 co-relation queries the response was YES. Maximal size of possible extension queue 5110. Compared 1077177 event pairs, 48225 based on Foata normal form. 0/88272 useless extension candidates. Maximal degree in co-relation 154888. Up to 71028 conditions per place. [2023-08-26 20:55:57,595 INFO L140 encePairwiseOnDemand]: 468/473 looper letters, 113 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2023-08-26 20:55:57,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 133 transitions, 559 flow [2023-08-26 20:55:57,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:55:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:55:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 878 transitions. [2023-08-26 20:55:57,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46405919661733613 [2023-08-26 20:55:57,597 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 878 transitions. [2023-08-26 20:55:57,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 878 transitions. [2023-08-26 20:55:57,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:55:57,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 878 transitions. [2023-08-26 20:55:57,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 219.5) internal successors, (878), 4 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:57,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 473.0) internal successors, (2365), 5 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:57,602 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 473.0) internal successors, (2365), 5 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:57,602 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 147 flow. Second operand 4 states and 878 transitions. [2023-08-26 20:55:57,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 133 transitions, 559 flow [2023-08-26 20:55:57,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 556 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:55:57,606 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 169 flow [2023-08-26 20:55:57,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2023-08-26 20:55:57,607 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 4 predicate places. [2023-08-26 20:55:57,607 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 169 flow [2023-08-26 20:55:57,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:57,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:55:57,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:55:57,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-26 20:55:57,608 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 20:55:57,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:55:57,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1306128575, now seen corresponding path program 1 times [2023-08-26 20:55:57,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:55:57,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382718982] [2023-08-26 20:55:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:55:57,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:55:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:55:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:55:57,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:55:57,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382718982] [2023-08-26 20:55:57,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382718982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:55:57,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:55:57,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:55:57,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095583569] [2023-08-26 20:55:57,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:55:57,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:55:57,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:55:57,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:55:57,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:55:57,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 473 [2023-08-26 20:55:57,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:55:57,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:55:57,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 473 [2023-08-26 20:55:57,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:56:25,380 INFO L124 PetriNetUnfolderBase]: 364824/467926 cut-off events. [2023-08-26 20:56:25,380 INFO L125 PetriNetUnfolderBase]: For 49865/49865 co-relation queries the response was YES. [2023-08-26 20:56:26,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029015 conditions, 467926 events. 364824/467926 cut-off events. For 49865/49865 co-relation queries the response was YES. Maximal size of possible extension queue 14840. Compared 3183465 event pairs, 174506 based on Foata normal form. 6912/323101 useless extension candidates. Maximal degree in co-relation 981079. Up to 295461 conditions per place. [2023-08-26 20:56:28,187 INFO L140 encePairwiseOnDemand]: 463/473 looper letters, 97 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2023-08-26 20:56:28,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 113 transitions, 517 flow [2023-08-26 20:56:28,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:56:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:56:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2023-08-26 20:56:28,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2023-08-26 20:56:28,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2023-08-26 20:56:28,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2023-08-26 20:56:28,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:56:28,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2023-08-26 20:56:28,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:56:28,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:56:28,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:56:28,193 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 169 flow. Second operand 3 states and 642 transitions. [2023-08-26 20:56:28,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 113 transitions, 517 flow [2023-08-26 20:56:28,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 113 transitions, 517 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 20:56:28,243 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 264 flow [2023-08-26 20:56:28,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2023-08-26 20:56:28,243 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2023-08-26 20:56:28,244 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 264 flow [2023-08-26 20:56:28,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:56:28,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:56:28,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:56:28,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-26 20:56:28,244 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 20:56:28,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:56:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1306128521, now seen corresponding path program 1 times [2023-08-26 20:56:28,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:56:28,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967152544] [2023-08-26 20:56:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:56:28,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:56:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:56:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:56:28,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:56:28,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967152544] [2023-08-26 20:56:28,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967152544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:56:28,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:56:28,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:56:28,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603410060] [2023-08-26 20:56:28,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:56:28,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:56:28,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:56:28,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:56:28,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 20:56:28,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 473 [2023-08-26 20:56:28,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:56:28,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:56:28,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 473 [2023-08-26 20:56:28,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand