/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/queue.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 20:35:10,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 20:35:10,491 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 20:35:10,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 20:35:10,495 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 20:35:10,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 20:35:10,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 20:35:10,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 20:35:10,514 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 20:35:10,517 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 20:35:10,518 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 20:35:10,518 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 20:35:10,518 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 20:35:10,519 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 20:35:10,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 20:35:10,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 20:35:10,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 20:35:10,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 20:35:10,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 20:35:10,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 20:35:10,521 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 20:35:10,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 20:35:10,522 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 20:35:10,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 20:35:10,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 20:35:10,523 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 20:35:10,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 20:35:10,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:35:10,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 20:35:10,524 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 20:35:10,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 20:35:10,525 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 20:35:10,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 20:35:10,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 20:35:10,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 20:35:10,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 20:35:10,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 20:35:10,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 20:35:10,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 20:35:10,872 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 20:35:10,873 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 20:35:10,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2023-08-26 20:35:12,116 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 20:35:12,416 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 20:35:12,416 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2023-08-26 20:35:12,432 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76d6a66fb/949e1a15aa334e61aff59c0c8d4ca1b0/FLAGf4cf82a9c [2023-08-26 20:35:12,444 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76d6a66fb/949e1a15aa334e61aff59c0c8d4ca1b0 [2023-08-26 20:35:12,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 20:35:12,447 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 20:35:12,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 20:35:12,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 20:35:12,451 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 20:35:12,451 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fe8510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:12, skipping insertion in model container [2023-08-26 20:35:12,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:35:12" (1/1) ... [2023-08-26 20:35:12,501 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 20:35:12,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:35:12,946 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 20:35:12,976 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-26 20:35:12,978 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-26 20:35:12,983 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [750] [2023-08-26 20:35:13,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 20:35:13,086 INFO L206 MainTranslator]: Completed translation [2023-08-26 20:35:13,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13 WrapperNode [2023-08-26 20:35:13,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 20:35:13,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 20:35:13,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 20:35:13,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 20:35:13,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (1/1) ... [2023-08-26 20:35:13,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (1/1) ... [2023-08-26 20:35:13,162 INFO L138 Inliner]: procedures = 274, calls = 71, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 279 [2023-08-26 20:35:13,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 20:35:13,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 20:35:13,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 20:35:13,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 20:35:13,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (1/1) ... [2023-08-26 20:35:13,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (1/1) ... [2023-08-26 20:35:13,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (1/1) ... [2023-08-26 20:35:13,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (1/1) ... [2023-08-26 20:35:13,192 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (1/1) ... [2023-08-26 20:35:13,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (1/1) ... [2023-08-26 20:35:13,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (1/1) ... [2023-08-26 20:35:13,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (1/1) ... [2023-08-26 20:35:13,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 20:35:13,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 20:35:13,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 20:35:13,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 20:35:13,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (1/1) ... [2023-08-26 20:35:13,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 20:35:13,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:35:13,261 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 20:35:13,282 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 20:35:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-26 20:35:13,292 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-26 20:35:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-26 20:35:13,293 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-26 20:35:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 20:35:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 20:35:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 20:35:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 20:35:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 20:35:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 20:35:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 20:35:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 20:35:13,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 20:35:13,296 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 20:35:13,477 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 20:35:13,479 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 20:35:13,780 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 20:35:13,788 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 20:35:13,789 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 20:35:13,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:35:13 BoogieIcfgContainer [2023-08-26 20:35:13,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 20:35:13,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 20:35:13,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 20:35:13,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 20:35:13,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:35:12" (1/3) ... [2023-08-26 20:35:13,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ac0cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:35:13, skipping insertion in model container [2023-08-26 20:35:13,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:35:13" (2/3) ... [2023-08-26 20:35:13,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ac0cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:35:13, skipping insertion in model container [2023-08-26 20:35:13,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:35:13" (3/3) ... [2023-08-26 20:35:13,798 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-08-26 20:35:13,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 20:35:13,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-08-26 20:35:13,813 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 20:35:13,952 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 20:35:13,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 314 transitions, 644 flow [2023-08-26 20:35:14,087 INFO L124 PetriNetUnfolderBase]: 18/312 cut-off events. [2023-08-26 20:35:14,087 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 20:35:14,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 312 events. 18/312 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 522 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 227. Up to 2 conditions per place. [2023-08-26 20:35:14,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 314 transitions, 644 flow [2023-08-26 20:35:14,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 303 transitions, 615 flow [2023-08-26 20:35:14,105 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 20:35:14,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 303 transitions, 615 flow [2023-08-26 20:35:14,116 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 303 transitions, 615 flow [2023-08-26 20:35:14,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 303 transitions, 615 flow [2023-08-26 20:35:14,197 INFO L124 PetriNetUnfolderBase]: 18/303 cut-off events. [2023-08-26 20:35:14,198 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 20:35:14,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 303 events. 18/303 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 482 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 227. Up to 2 conditions per place. [2023-08-26 20:35:14,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 24328 [2023-08-26 20:35:23,881 INFO L134 LiptonReduction]: Checked pairs total: 59335 [2023-08-26 20:35:23,881 INFO L136 LiptonReduction]: Total number of compositions: 288 [2023-08-26 20:35:23,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 20:35:23,898 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;@42631e9f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 20:35:23,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2023-08-26 20:35:23,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 20:35:23,901 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-08-26 20:35:23,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 20:35:23,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:23,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 20:35:23,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:23,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:23,907 INFO L85 PathProgramCache]: Analyzing trace with hash 39534, now seen corresponding path program 1 times [2023-08-26 20:35:23,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:23,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50037813] [2023-08-26 20:35:23,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:23,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:24,048 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 20:35:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50037813] [2023-08-26 20:35:24,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50037813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:24,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:24,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 20:35:24,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542767427] [2023-08-26 20:35:24,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:24,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 20:35:24,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:24,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 20:35:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 20:35:24,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 602 [2023-08-26 20:35:24,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 179 flow. Second operand has 2 states, 2 states have (on average 299.0) internal successors, (598), 2 states have internal predecessors, (598), 0 states have call successors, (0), 0 states 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 20:35:24,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:24,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 602 [2023-08-26 20:35:24,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:24,606 INFO L124 PetriNetUnfolderBase]: 3225/5327 cut-off events. [2023-08-26 20:35:24,606 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-08-26 20:35:24,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10468 conditions, 5327 events. 3225/5327 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 29104 event pairs, 2619 based on Foata normal form. 78/3620 useless extension candidates. Maximal degree in co-relation 10235. Up to 5037 conditions per place. [2023-08-26 20:35:24,642 INFO L140 encePairwiseOnDemand]: 599/602 looper letters, 72 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2023-08-26 20:35:24,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 313 flow [2023-08-26 20:35:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 20:35:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 20:35:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 671 transitions. [2023-08-26 20:35:24,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5573089700996677 [2023-08-26 20:35:24,661 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 671 transitions. [2023-08-26 20:35:24,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 671 transitions. [2023-08-26 20:35:24,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:24,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 671 transitions. [2023-08-26 20:35:24,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 335.5) internal successors, (671), 2 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 20:35:24,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 602.0) internal successors, (1806), 3 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:24,680 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 602.0) internal successors, (1806), 3 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:24,682 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 179 flow. Second operand 2 states and 671 transitions. [2023-08-26 20:35:24,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 313 flow [2023-08-26 20:35:24,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 308 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 20:35:24,691 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 164 flow [2023-08-26 20:35:24,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2023-08-26 20:35:24,696 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -4 predicate places. [2023-08-26 20:35:24,696 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 164 flow [2023-08-26 20:35:24,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 299.0) internal successors, (598), 2 states have internal predecessors, (598), 0 states have call successors, (0), 0 states 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 20:35:24,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:24,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 20:35:24,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 20:35:24,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:24,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:24,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2083998769, now seen corresponding path program 1 times [2023-08-26 20:35:24,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:24,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774334130] [2023-08-26 20:35:24,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:24,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:25,885 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 20:35:25,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:25,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774334130] [2023-08-26 20:35:25,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774334130] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:25,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:25,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 20:35:25,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666601636] [2023-08-26 20:35:25,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:25,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 20:35:25,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:25,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 20:35:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 20:35:25,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 602 [2023-08-26 20:35:25,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:25,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:25,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 602 [2023-08-26 20:35:25,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:27,183 INFO L124 PetriNetUnfolderBase]: 3389/5538 cut-off events. [2023-08-26 20:35:27,183 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 20:35:27,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10920 conditions, 5538 events. 3389/5538 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 29481 event pairs, 2718 based on Foata normal form. 0/3695 useless extension candidates. Maximal degree in co-relation 10917. Up to 5293 conditions per place. [2023-08-26 20:35:27,211 INFO L140 encePairwiseOnDemand]: 593/602 looper letters, 73 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2023-08-26 20:35:27,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 90 transitions, 352 flow [2023-08-26 20:35:27,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 20:35:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 20:35:27,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1696 transitions. [2023-08-26 20:35:27,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.402467963929758 [2023-08-26 20:35:27,218 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1696 transitions. [2023-08-26 20:35:27,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1696 transitions. [2023-08-26 20:35:27,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:27,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1696 transitions. [2023-08-26 20:35:27,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 242.28571428571428) internal successors, (1696), 7 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 20:35:27,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states 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 20:35:27,231 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states 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 20:35:27,232 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 164 flow. Second operand 7 states and 1696 transitions. [2023-08-26 20:35:27,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 90 transitions, 352 flow [2023-08-26 20:35:27,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 90 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 20:35:27,236 INFO L231 Difference]: Finished difference. Result has 88 places, 90 transitions, 237 flow [2023-08-26 20:35:27,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=88, PETRI_TRANSITIONS=90} [2023-08-26 20:35:27,237 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 7 predicate places. [2023-08-26 20:35:27,237 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 90 transitions, 237 flow [2023-08-26 20:35:27,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:27,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:27,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:27,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 20:35:27,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:27,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:27,244 INFO L85 PathProgramCache]: Analyzing trace with hash 161050761, now seen corresponding path program 1 times [2023-08-26 20:35:27,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:27,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111494401] [2023-08-26 20:35:27,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:27,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:28,057 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 20:35:28,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:28,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111494401] [2023-08-26 20:35:28,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111494401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:28,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:28,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 20:35:28,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489707497] [2023-08-26 20:35:28,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:28,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 20:35:28,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:28,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 20:35:28,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 20:35:28,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 602 [2023-08-26 20:35:28,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 90 transitions, 237 flow. Second operand has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states 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 20:35:28,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:28,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 602 [2023-08-26 20:35:28,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:29,846 INFO L124 PetriNetUnfolderBase]: 3654/5995 cut-off events. [2023-08-26 20:35:29,847 INFO L125 PetriNetUnfolderBase]: For 288/288 co-relation queries the response was YES. [2023-08-26 20:35:29,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12373 conditions, 5995 events. 3654/5995 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 32999 event pairs, 871 based on Foata normal form. 0/4080 useless extension candidates. Maximal degree in co-relation 12364. Up to 5339 conditions per place. [2023-08-26 20:35:29,882 INFO L140 encePairwiseOnDemand]: 592/602 looper letters, 145 selfloop transitions, 21 changer transitions 0/172 dead transitions. [2023-08-26 20:35:29,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 172 transitions, 757 flow [2023-08-26 20:35:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 20:35:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 20:35:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1745 transitions. [2023-08-26 20:35:29,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41409587090650213 [2023-08-26 20:35:29,887 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1745 transitions. [2023-08-26 20:35:29,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1745 transitions. [2023-08-26 20:35:29,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:29,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1745 transitions. [2023-08-26 20:35:29,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 249.28571428571428) internal successors, (1745), 7 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states 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 20:35:29,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states 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 20:35:29,900 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states 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 20:35:29,900 INFO L175 Difference]: Start difference. First operand has 88 places, 90 transitions, 237 flow. Second operand 7 states and 1745 transitions. [2023-08-26 20:35:29,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 172 transitions, 757 flow [2023-08-26 20:35:29,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 172 transitions, 757 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 20:35:29,908 INFO L231 Difference]: Finished difference. Result has 98 places, 101 transitions, 354 flow [2023-08-26 20:35:29,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=98, PETRI_TRANSITIONS=101} [2023-08-26 20:35:29,909 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2023-08-26 20:35:29,909 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 101 transitions, 354 flow [2023-08-26 20:35:29,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states 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 20:35:29,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:29,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:29,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 20:35:29,911 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:29,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:29,911 INFO L85 PathProgramCache]: Analyzing trace with hash 180712821, now seen corresponding path program 2 times [2023-08-26 20:35:29,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:29,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136319379] [2023-08-26 20:35:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:29,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:30,189 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 20:35:30,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:30,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136319379] [2023-08-26 20:35:30,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136319379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:30,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:30,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 20:35:30,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86708927] [2023-08-26 20:35:30,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:30,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 20:35:30,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:30,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 20:35:30,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 20:35:30,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 602 [2023-08-26 20:35:30,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 101 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states 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 20:35:30,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:30,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 602 [2023-08-26 20:35:30,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:30,970 INFO L124 PetriNetUnfolderBase]: 3771/6187 cut-off events. [2023-08-26 20:35:30,971 INFO L125 PetriNetUnfolderBase]: For 1119/1119 co-relation queries the response was YES. [2023-08-26 20:35:30,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13696 conditions, 6187 events. 3771/6187 cut-off events. For 1119/1119 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 34286 event pairs, 799 based on Foata normal form. 0/4242 useless extension candidates. Maximal degree in co-relation 13682. Up to 5370 conditions per place. [2023-08-26 20:35:31,003 INFO L140 encePairwiseOnDemand]: 592/602 looper letters, 145 selfloop transitions, 28 changer transitions 0/179 dead transitions. [2023-08-26 20:35:31,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 179 transitions, 893 flow [2023-08-26 20:35:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 20:35:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 20:35:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1744 transitions. [2023-08-26 20:35:31,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41385856668248694 [2023-08-26 20:35:31,009 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1744 transitions. [2023-08-26 20:35:31,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1744 transitions. [2023-08-26 20:35:31,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:31,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1744 transitions. [2023-08-26 20:35:31,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 249.14285714285714) internal successors, (1744), 7 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states 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 20:35:31,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states 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 20:35:31,021 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states 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 20:35:31,021 INFO L175 Difference]: Start difference. First operand has 98 places, 101 transitions, 354 flow. Second operand 7 states and 1744 transitions. [2023-08-26 20:35:31,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 179 transitions, 893 flow [2023-08-26 20:35:31,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 179 transitions, 869 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-26 20:35:31,037 INFO L231 Difference]: Finished difference. Result has 107 places, 109 transitions, 468 flow [2023-08-26 20:35:31,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=107, PETRI_TRANSITIONS=109} [2023-08-26 20:35:31,039 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 26 predicate places. [2023-08-26 20:35:31,039 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 109 transitions, 468 flow [2023-08-26 20:35:31,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states 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 20:35:31,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:31,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:31,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 20:35:31,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:31,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:31,040 INFO L85 PathProgramCache]: Analyzing trace with hash 179454531, now seen corresponding path program 3 times [2023-08-26 20:35:31,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:31,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45086970] [2023-08-26 20:35:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:31,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:31,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45086970] [2023-08-26 20:35:31,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45086970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:31,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:31,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 20:35:31,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249994430] [2023-08-26 20:35:31,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:31,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 20:35:31,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 20:35:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-26 20:35:31,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 602 [2023-08-26 20:35:31,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 109 transitions, 468 flow. Second operand has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states 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 20:35:31,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:31,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 602 [2023-08-26 20:35:31,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:32,168 INFO L124 PetriNetUnfolderBase]: 3817/6255 cut-off events. [2023-08-26 20:35:32,169 INFO L125 PetriNetUnfolderBase]: For 1706/1706 co-relation queries the response was YES. [2023-08-26 20:35:32,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14266 conditions, 6255 events. 3817/6255 cut-off events. For 1706/1706 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 35172 event pairs, 886 based on Foata normal form. 0/4316 useless extension candidates. Maximal degree in co-relation 14248. Up to 5320 conditions per place. [2023-08-26 20:35:32,211 INFO L140 encePairwiseOnDemand]: 594/602 looper letters, 138 selfloop transitions, 26 changer transitions 0/170 dead transitions. [2023-08-26 20:35:32,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 170 transitions, 948 flow [2023-08-26 20:35:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 20:35:32,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 20:35:32,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1501 transitions. [2023-08-26 20:35:32,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155592469545958 [2023-08-26 20:35:32,215 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1501 transitions. [2023-08-26 20:35:32,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1501 transitions. [2023-08-26 20:35:32,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:32,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1501 transitions. [2023-08-26 20:35:32,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.16666666666666) internal successors, (1501), 6 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states 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 20:35:32,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states 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 20:35:32,225 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states 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 20:35:32,225 INFO L175 Difference]: Start difference. First operand has 107 places, 109 transitions, 468 flow. Second operand 6 states and 1501 transitions. [2023-08-26 20:35:32,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 170 transitions, 948 flow [2023-08-26 20:35:32,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 170 transitions, 934 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-26 20:35:32,241 INFO L231 Difference]: Finished difference. Result has 114 places, 114 transitions, 572 flow [2023-08-26 20:35:32,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=572, PETRI_PLACES=114, PETRI_TRANSITIONS=114} [2023-08-26 20:35:32,242 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 33 predicate places. [2023-08-26 20:35:32,242 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 114 transitions, 572 flow [2023-08-26 20:35:32,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states 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 20:35:32,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:32,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:32,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 20:35:32,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:32,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:32,243 INFO L85 PathProgramCache]: Analyzing trace with hash 656717051, now seen corresponding path program 1 times [2023-08-26 20:35:32,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:32,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405143850] [2023-08-26 20:35:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:32,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:32,787 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 20:35:32,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:32,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405143850] [2023-08-26 20:35:32,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405143850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:32,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:32,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 20:35:32,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057813484] [2023-08-26 20:35:32,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:32,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 20:35:32,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:32,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 20:35:32,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 20:35:32,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 602 [2023-08-26 20:35:32,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 114 transitions, 572 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states 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 20:35:32,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:32,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 602 [2023-08-26 20:35:32,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:33,840 INFO L124 PetriNetUnfolderBase]: 3813/6274 cut-off events. [2023-08-26 20:35:33,840 INFO L125 PetriNetUnfolderBase]: For 3930/3930 co-relation queries the response was YES. [2023-08-26 20:35:33,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14690 conditions, 6274 events. 3813/6274 cut-off events. For 3930/3930 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 34577 event pairs, 2852 based on Foata normal form. 0/4332 useless extension candidates. Maximal degree in co-relation 14669. Up to 5984 conditions per place. [2023-08-26 20:35:33,876 INFO L140 encePairwiseOnDemand]: 592/602 looper letters, 100 selfloop transitions, 12 changer transitions 0/118 dead transitions. [2023-08-26 20:35:33,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 806 flow [2023-08-26 20:35:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 20:35:33,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 20:35:33,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1700 transitions. [2023-08-26 20:35:33,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034171808258187 [2023-08-26 20:35:33,882 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1700 transitions. [2023-08-26 20:35:33,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1700 transitions. [2023-08-26 20:35:33,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:33,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1700 transitions. [2023-08-26 20:35:33,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 242.85714285714286) internal successors, (1700), 7 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 20:35:33,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states 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 20:35:33,892 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 602.0) internal successors, (4816), 8 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states 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 20:35:33,892 INFO L175 Difference]: Start difference. First operand has 114 places, 114 transitions, 572 flow. Second operand 7 states and 1700 transitions. [2023-08-26 20:35:33,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 806 flow [2023-08-26 20:35:33,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 118 transitions, 792 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-26 20:35:33,901 INFO L231 Difference]: Finished difference. Result has 120 places, 116 transitions, 602 flow [2023-08-26 20:35:33,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=602, PETRI_PLACES=120, PETRI_TRANSITIONS=116} [2023-08-26 20:35:33,902 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 39 predicate places. [2023-08-26 20:35:33,902 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 116 transitions, 602 flow [2023-08-26 20:35:33,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states 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 20:35:33,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:33,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:33,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 20:35:33,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:33,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:33,903 INFO L85 PathProgramCache]: Analyzing trace with hash 956022354, now seen corresponding path program 1 times [2023-08-26 20:35:33,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:33,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771450901] [2023-08-26 20:35:33,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:33,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:33,937 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 20:35:33,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:33,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771450901] [2023-08-26 20:35:33,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771450901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:33,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:33,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:35:33,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637378029] [2023-08-26 20:35:33,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:33,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:35:33,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:33,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:35:33,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:35:33,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 602 [2023-08-26 20:35:33,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 116 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:35:33,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:33,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 602 [2023-08-26 20:35:33,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:34,894 INFO L124 PetriNetUnfolderBase]: 6147/10326 cut-off events. [2023-08-26 20:35:34,894 INFO L125 PetriNetUnfolderBase]: For 5673/5784 co-relation queries the response was YES. [2023-08-26 20:35:34,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23405 conditions, 10326 events. 6147/10326 cut-off events. For 5673/5784 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 66591 event pairs, 2686 based on Foata normal form. 111/7518 useless extension candidates. Maximal degree in co-relation 23382. Up to 5644 conditions per place. [2023-08-26 20:35:34,957 INFO L140 encePairwiseOnDemand]: 597/602 looper letters, 187 selfloop transitions, 2 changer transitions 0/201 dead transitions. [2023-08-26 20:35:34,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 201 transitions, 1352 flow [2023-08-26 20:35:34,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:35:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:35:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-08-26 20:35:34,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603543743078627 [2023-08-26 20:35:34,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-08-26 20:35:34,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-08-26 20:35:34,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:34,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-08-26 20:35:34,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 20:35:34,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:34,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:34,966 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 602 flow. Second operand 3 states and 1012 transitions. [2023-08-26 20:35:34,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 201 transitions, 1352 flow [2023-08-26 20:35:34,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 201 transitions, 1332 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 20:35:34,975 INFO L231 Difference]: Finished difference. Result has 118 places, 117 transitions, 598 flow [2023-08-26 20:35:34,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=598, PETRI_PLACES=118, PETRI_TRANSITIONS=117} [2023-08-26 20:35:34,976 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 37 predicate places. [2023-08-26 20:35:34,976 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 598 flow [2023-08-26 20:35:34,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:35:34,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:34,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:34,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 20:35:34,977 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:34,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:34,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1102697047, now seen corresponding path program 1 times [2023-08-26 20:35:34,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:34,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545464092] [2023-08-26 20:35:34,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:34,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:35,476 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 20:35:35,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:35,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545464092] [2023-08-26 20:35:35,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545464092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:35,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:35,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 20:35:35,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215718342] [2023-08-26 20:35:35,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:35,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 20:35:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:35,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 20:35:35,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-26 20:35:35,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 602 [2023-08-26 20:35:35,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 598 flow. Second operand has 7 states, 7 states have (on average 227.42857142857142) internal successors, (1592), 7 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states 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 20:35:35,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:35,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 602 [2023-08-26 20:35:35,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:36,598 INFO L124 PetriNetUnfolderBase]: 6543/10715 cut-off events. [2023-08-26 20:35:36,598 INFO L125 PetriNetUnfolderBase]: For 4115/4115 co-relation queries the response was YES. [2023-08-26 20:35:36,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25866 conditions, 10715 events. 6543/10715 cut-off events. For 4115/4115 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 65614 event pairs, 1546 based on Foata normal form. 82/7909 useless extension candidates. Maximal degree in co-relation 25842. Up to 8820 conditions per place. [2023-08-26 20:35:36,662 INFO L140 encePairwiseOnDemand]: 593/602 looper letters, 150 selfloop transitions, 25 changer transitions 0/181 dead transitions. [2023-08-26 20:35:36,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 181 transitions, 1146 flow [2023-08-26 20:35:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 20:35:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 20:35:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1505 transitions. [2023-08-26 20:35:36,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-26 20:35:36,667 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1505 transitions. [2023-08-26 20:35:36,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1505 transitions. [2023-08-26 20:35:36,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:36,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1505 transitions. [2023-08-26 20:35:36,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.83333333333334) internal successors, (1505), 6 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:36,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states 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 20:35:36,678 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states 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 20:35:36,678 INFO L175 Difference]: Start difference. First operand has 118 places, 117 transitions, 598 flow. Second operand 6 states and 1505 transitions. [2023-08-26 20:35:36,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 181 transitions, 1146 flow [2023-08-26 20:35:36,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 181 transitions, 1136 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:35:36,714 INFO L231 Difference]: Finished difference. Result has 123 places, 119 transitions, 676 flow [2023-08-26 20:35:36,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=676, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2023-08-26 20:35:36,718 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 42 predicate places. [2023-08-26 20:35:36,718 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 676 flow [2023-08-26 20:35:36,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.42857142857142) internal successors, (1592), 7 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states 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 20:35:36,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:36,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:36,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 20:35:36,725 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:36,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:36,726 INFO L85 PathProgramCache]: Analyzing trace with hash -418827361, now seen corresponding path program 1 times [2023-08-26 20:35:36,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:36,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257032019] [2023-08-26 20:35:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:36,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:36,794 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 20:35:36,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:36,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257032019] [2023-08-26 20:35:36,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257032019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:36,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:36,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:35:36,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382195160] [2023-08-26 20:35:36,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:36,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:35:36,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:36,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:35:36,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:35:36,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 602 [2023-08-26 20:35:36,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 676 flow. Second operand has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 20:35:36,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:36,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 602 [2023-08-26 20:35:36,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:37,504 INFO L124 PetriNetUnfolderBase]: 4383/7457 cut-off events. [2023-08-26 20:35:37,505 INFO L125 PetriNetUnfolderBase]: For 4870/4921 co-relation queries the response was YES. [2023-08-26 20:35:37,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17089 conditions, 7457 events. 4383/7457 cut-off events. For 4870/4921 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 42556 event pairs, 2380 based on Foata normal form. 51/5267 useless extension candidates. Maximal degree in co-relation 17064. Up to 4863 conditions per place. [2023-08-26 20:35:37,573 INFO L140 encePairwiseOnDemand]: 598/602 looper letters, 117 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2023-08-26 20:35:37,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 129 transitions, 797 flow [2023-08-26 20:35:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:35:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:35:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 979 transitions. [2023-08-26 20:35:37,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5420819490586932 [2023-08-26 20:35:37,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 979 transitions. [2023-08-26 20:35:37,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 979 transitions. [2023-08-26 20:35:37,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:37,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 979 transitions. [2023-08-26 20:35:37,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states 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 20:35:37,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:37,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:37,582 INFO L175 Difference]: Start difference. First operand has 123 places, 119 transitions, 676 flow. Second operand 3 states and 979 transitions. [2023-08-26 20:35:37,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 129 transitions, 797 flow [2023-08-26 20:35:37,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 129 transitions, 690 flow, removed 3 selfloop flow, removed 17 redundant places. [2023-08-26 20:35:37,592 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 376 flow [2023-08-26 20:35:37,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2023-08-26 20:35:37,594 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 23 predicate places. [2023-08-26 20:35:37,595 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 376 flow [2023-08-26 20:35:37,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 20:35:37,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:37,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:37,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 20:35:37,597 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err12ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:37,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:37,597 INFO L85 PathProgramCache]: Analyzing trace with hash 677242092, now seen corresponding path program 1 times [2023-08-26 20:35:37,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:37,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342026722] [2023-08-26 20:35:37,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:37,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:37,648 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 20:35:37,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:37,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342026722] [2023-08-26 20:35:37,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342026722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:37,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:37,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:35:37,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997590828] [2023-08-26 20:35:37,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:37,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:35:37,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:35:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:35:37,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 602 [2023-08-26 20:35:37,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 20:35:37,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:37,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 602 [2023-08-26 20:35:37,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:38,246 INFO L124 PetriNetUnfolderBase]: 4225/7175 cut-off events. [2023-08-26 20:35:38,246 INFO L125 PetriNetUnfolderBase]: For 1706/1745 co-relation queries the response was YES. [2023-08-26 20:35:38,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15919 conditions, 7175 events. 4225/7175 cut-off events. For 1706/1745 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 41399 event pairs, 3346 based on Foata normal form. 39/5011 useless extension candidates. Maximal degree in co-relation 15901. Up to 6718 conditions per place. [2023-08-26 20:35:38,282 INFO L140 encePairwiseOnDemand]: 599/602 looper letters, 89 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2023-08-26 20:35:38,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 596 flow [2023-08-26 20:35:38,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:35:38,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:35:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2023-08-26 20:35:38,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526578073089701 [2023-08-26 20:35:38,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2023-08-26 20:35:38,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2023-08-26 20:35:38,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:38,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2023-08-26 20:35:38,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states 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 20:35:38,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:38,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:38,291 INFO L175 Difference]: Start difference. First operand has 104 places, 95 transitions, 376 flow. Second operand 3 states and 951 transitions. [2023-08-26 20:35:38,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 596 flow [2023-08-26 20:35:38,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 104 transitions, 593 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:35:38,297 INFO L231 Difference]: Finished difference. Result has 105 places, 94 transitions, 377 flow [2023-08-26 20:35:38,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=105, PETRI_TRANSITIONS=94} [2023-08-26 20:35:38,297 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 24 predicate places. [2023-08-26 20:35:38,297 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 94 transitions, 377 flow [2023-08-26 20:35:38,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 20:35:38,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:38,298 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:38,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 20:35:38,298 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:38,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:38,299 INFO L85 PathProgramCache]: Analyzing trace with hash -976531922, now seen corresponding path program 1 times [2023-08-26 20:35:38,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:38,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920820762] [2023-08-26 20:35:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:38,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:38,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:38,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920820762] [2023-08-26 20:35:38,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920820762] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 20:35:38,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947413634] [2023-08-26 20:35:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:38,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 20:35:38,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 20:35:38,345 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 20:35:38,348 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 20:35:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:38,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 20:35:38,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 20:35:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:38,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 20:35:38,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947413634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:38,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 20:35:38,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-26 20:35:38,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190802630] [2023-08-26 20:35:38,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:38,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 20:35:38,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:38,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 20:35:38,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 20:35:38,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 602 [2023-08-26 20:35:38,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states 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 20:35:38,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:38,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 602 [2023-08-26 20:35:38,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:39,143 INFO L124 PetriNetUnfolderBase]: 3832/6818 cut-off events. [2023-08-26 20:35:39,143 INFO L125 PetriNetUnfolderBase]: For 1250/1287 co-relation queries the response was YES. [2023-08-26 20:35:39,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14491 conditions, 6818 events. 3832/6818 cut-off events. For 1250/1287 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 41215 event pairs, 110 based on Foata normal form. 35/4954 useless extension candidates. Maximal degree in co-relation 14473. Up to 3261 conditions per place. [2023-08-26 20:35:39,165 INFO L140 encePairwiseOnDemand]: 599/602 looper letters, 182 selfloop transitions, 2 changer transitions 0/196 dead transitions. [2023-08-26 20:35:39,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 196 transitions, 1059 flow [2023-08-26 20:35:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 20:35:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 20:35:39,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1323 transitions. [2023-08-26 20:35:39,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494186046511628 [2023-08-26 20:35:39,169 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1323 transitions. [2023-08-26 20:35:39,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1323 transitions. [2023-08-26 20:35:39,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:39,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1323 transitions. [2023-08-26 20:35:39,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:39,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states 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 20:35:39,177 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states 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 20:35:39,177 INFO L175 Difference]: Start difference. First operand has 105 places, 94 transitions, 377 flow. Second operand 4 states and 1323 transitions. [2023-08-26 20:35:39,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 196 transitions, 1059 flow [2023-08-26 20:35:39,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 196 transitions, 1045 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 20:35:39,182 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 371 flow [2023-08-26 20:35:39,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=371, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2023-08-26 20:35:39,185 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 24 predicate places. [2023-08-26 20:35:39,185 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 371 flow [2023-08-26 20:35:39,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states 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 20:35:39,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:39,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:39,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 20:35:39,391 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,SelfDestructingSolverStorable10 [2023-08-26 20:35:39,392 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:39,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:39,392 INFO L85 PathProgramCache]: Analyzing trace with hash -976531853, now seen corresponding path program 1 times [2023-08-26 20:35:39,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:39,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11183467] [2023-08-26 20:35:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 20:35:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11183467] [2023-08-26 20:35:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11183467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:39,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:39,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:35:39,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766769295] [2023-08-26 20:35:39,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:39,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:35:39,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:39,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:35:39,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:35:39,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 602 [2023-08-26 20:35:39,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:39,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:39,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 602 [2023-08-26 20:35:39,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:39,881 INFO L124 PetriNetUnfolderBase]: 3634/6522 cut-off events. [2023-08-26 20:35:39,881 INFO L125 PetriNetUnfolderBase]: For 1690/1723 co-relation queries the response was YES. [2023-08-26 20:35:39,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13911 conditions, 6522 events. 3634/6522 cut-off events. For 1690/1723 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 38658 event pairs, 448 based on Foata normal form. 31/4830 useless extension candidates. Maximal degree in co-relation 13893. Up to 4738 conditions per place. [2023-08-26 20:35:39,909 INFO L140 encePairwiseOnDemand]: 598/602 looper letters, 119 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2023-08-26 20:35:39,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 135 transitions, 749 flow [2023-08-26 20:35:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:35:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:35:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 975 transitions. [2023-08-26 20:35:39,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398671096345515 [2023-08-26 20:35:39,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 975 transitions. [2023-08-26 20:35:39,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 975 transitions. [2023-08-26 20:35:39,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:39,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 975 transitions. [2023-08-26 20:35:39,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states 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 20:35:39,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:39,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:39,917 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 371 flow. Second operand 3 states and 975 transitions. [2023-08-26 20:35:39,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 135 transitions, 749 flow [2023-08-26 20:35:39,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 135 transitions, 746 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 20:35:39,922 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 380 flow [2023-08-26 20:35:39,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2023-08-26 20:35:39,923 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 24 predicate places. [2023-08-26 20:35:39,923 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 380 flow [2023-08-26 20:35:39,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:39,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:39,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:39,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 20:35:39,923 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err12ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:39,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:39,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2002655297, now seen corresponding path program 1 times [2023-08-26 20:35:39,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:39,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112356757] [2023-08-26 20:35:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:40,520 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 20:35:40,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:40,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112356757] [2023-08-26 20:35:40,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112356757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:40,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:40,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-26 20:35:40,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471318813] [2023-08-26 20:35:40,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:40,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 20:35:40,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:40,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 20:35:40,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-26 20:35:40,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 602 [2023-08-26 20:35:40,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 380 flow. Second operand has 10 states, 10 states have (on average 220.4) internal successors, (2204), 10 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states 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 20:35:40,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:40,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 602 [2023-08-26 20:35:40,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:41,335 INFO L124 PetriNetUnfolderBase]: 3906/6724 cut-off events. [2023-08-26 20:35:41,335 INFO L125 PetriNetUnfolderBase]: For 4262/4262 co-relation queries the response was YES. [2023-08-26 20:35:41,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15917 conditions, 6724 events. 3906/6724 cut-off events. For 4262/4262 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 36847 event pairs, 3220 based on Foata normal form. 0/4985 useless extension candidates. Maximal degree in co-relation 15899. Up to 6327 conditions per place. [2023-08-26 20:35:41,383 INFO L140 encePairwiseOnDemand]: 590/602 looper letters, 84 selfloop transitions, 20 changer transitions 1/112 dead transitions. [2023-08-26 20:35:41,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 112 transitions, 644 flow [2023-08-26 20:35:41,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 20:35:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 20:35:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2285 transitions. [2023-08-26 20:35:41,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3795681063122924 [2023-08-26 20:35:41,390 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2285 transitions. [2023-08-26 20:35:41,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2285 transitions. [2023-08-26 20:35:41,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:41,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2285 transitions. [2023-08-26 20:35:41,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 228.5) internal successors, (2285), 10 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:41,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 602.0) internal successors, (6622), 11 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states 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 20:35:41,402 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 602.0) internal successors, (6622), 11 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states 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 20:35:41,402 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 380 flow. Second operand 10 states and 2285 transitions. [2023-08-26 20:35:41,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 112 transitions, 644 flow [2023-08-26 20:35:41,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 640 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:35:41,411 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 479 flow [2023-08-26 20:35:41,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=479, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2023-08-26 20:35:41,412 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 36 predicate places. [2023-08-26 20:35:41,412 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 479 flow [2023-08-26 20:35:41,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 220.4) internal successors, (2204), 10 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states 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 20:35:41,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:41,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:41,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 20:35:41,413 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err12ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:41,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:41,413 INFO L85 PathProgramCache]: Analyzing trace with hash 19172611, now seen corresponding path program 1 times [2023-08-26 20:35:41,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:41,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467793890] [2023-08-26 20:35:41,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:41,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:42,207 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 20:35:42,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:42,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467793890] [2023-08-26 20:35:42,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467793890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:42,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:42,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-26 20:35:42,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665493960] [2023-08-26 20:35:42,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:42,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 20:35:42,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:42,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 20:35:42,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-08-26 20:35:42,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 602 [2023-08-26 20:35:42,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 479 flow. Second operand has 11 states, 11 states have (on average 216.36363636363637) internal successors, (2380), 11 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 20:35:42,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:42,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 602 [2023-08-26 20:35:42,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:43,311 INFO L124 PetriNetUnfolderBase]: 4159/7154 cut-off events. [2023-08-26 20:35:43,312 INFO L125 PetriNetUnfolderBase]: For 3268/3268 co-relation queries the response was YES. [2023-08-26 20:35:43,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17058 conditions, 7154 events. 4159/7154 cut-off events. For 3268/3268 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 39561 event pairs, 1696 based on Foata normal form. 0/5362 useless extension candidates. Maximal degree in co-relation 17035. Up to 5838 conditions per place. [2023-08-26 20:35:43,349 INFO L140 encePairwiseOnDemand]: 590/602 looper letters, 146 selfloop transitions, 25 changer transitions 3/181 dead transitions. [2023-08-26 20:35:43,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 181 transitions, 1162 flow [2023-08-26 20:35:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 20:35:43,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 20:35:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2287 transitions. [2023-08-26 20:35:43,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37990033222591363 [2023-08-26 20:35:43,356 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2287 transitions. [2023-08-26 20:35:43,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2287 transitions. [2023-08-26 20:35:43,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:43,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2287 transitions. [2023-08-26 20:35:43,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 228.7) internal successors, (2287), 10 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states 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 20:35:43,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 602.0) internal successors, (6622), 11 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states 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 20:35:43,370 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 602.0) internal successors, (6622), 11 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states 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 20:35:43,370 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 479 flow. Second operand 10 states and 2287 transitions. [2023-08-26 20:35:43,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 181 transitions, 1162 flow [2023-08-26 20:35:43,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 181 transitions, 1131 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-26 20:35:43,382 INFO L231 Difference]: Finished difference. Result has 125 places, 106 transitions, 543 flow [2023-08-26 20:35:43,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=543, PETRI_PLACES=125, PETRI_TRANSITIONS=106} [2023-08-26 20:35:43,383 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 44 predicate places. [2023-08-26 20:35:43,383 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 106 transitions, 543 flow [2023-08-26 20:35:43,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 216.36363636363637) internal successors, (2380), 11 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 20:35:43,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:43,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:43,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 20:35:43,384 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err12ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:43,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1944893821, now seen corresponding path program 2 times [2023-08-26 20:35:43,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:43,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879750614] [2023-08-26 20:35:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:44,178 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 20:35:44,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:44,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879750614] [2023-08-26 20:35:44,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879750614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:44,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:44,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-26 20:35:44,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754184220] [2023-08-26 20:35:44,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:44,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 20:35:44,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:44,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 20:35:44,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-08-26 20:35:44,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 602 [2023-08-26 20:35:44,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 106 transitions, 543 flow. Second operand has 11 states, 11 states have (on average 216.36363636363637) internal successors, (2380), 11 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 20:35:44,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:44,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 602 [2023-08-26 20:35:44,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:45,298 INFO L124 PetriNetUnfolderBase]: 4481/7709 cut-off events. [2023-08-26 20:35:45,299 INFO L125 PetriNetUnfolderBase]: For 3807/3807 co-relation queries the response was YES. [2023-08-26 20:35:45,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18895 conditions, 7709 events. 4481/7709 cut-off events. For 3807/3807 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 44078 event pairs, 1638 based on Foata normal form. 0/5838 useless extension candidates. Maximal degree in co-relation 18868. Up to 5501 conditions per place. [2023-08-26 20:35:45,342 INFO L140 encePairwiseOnDemand]: 589/602 looper letters, 167 selfloop transitions, 32 changer transitions 6/212 dead transitions. [2023-08-26 20:35:45,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 212 transitions, 1399 flow [2023-08-26 20:35:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 20:35:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 20:35:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2740 transitions. [2023-08-26 20:35:45,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37929125138427466 [2023-08-26 20:35:45,349 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2740 transitions. [2023-08-26 20:35:45,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2740 transitions. [2023-08-26 20:35:45,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:45,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2740 transitions. [2023-08-26 20:35:45,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 228.33333333333334) internal successors, (2740), 12 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states 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 20:35:45,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 602.0) internal successors, (7826), 13 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states 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 20:35:45,364 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 602.0) internal successors, (7826), 13 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states 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 20:35:45,364 INFO L175 Difference]: Start difference. First operand has 125 places, 106 transitions, 543 flow. Second operand 12 states and 2740 transitions. [2023-08-26 20:35:45,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 212 transitions, 1399 flow [2023-08-26 20:35:45,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 212 transitions, 1349 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-26 20:35:45,379 INFO L231 Difference]: Finished difference. Result has 132 places, 113 transitions, 621 flow [2023-08-26 20:35:45,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=621, PETRI_PLACES=132, PETRI_TRANSITIONS=113} [2023-08-26 20:35:45,379 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 51 predicate places. [2023-08-26 20:35:45,379 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 113 transitions, 621 flow [2023-08-26 20:35:45,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 216.36363636363637) internal successors, (2380), 11 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 20:35:45,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:45,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:45,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 20:35:45,380 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err12ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:45,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:45,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1947575011, now seen corresponding path program 3 times [2023-08-26 20:35:45,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:45,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717603157] [2023-08-26 20:35:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:45,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:46,083 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 20:35:46,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:46,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717603157] [2023-08-26 20:35:46,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717603157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:46,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:46,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-26 20:35:46,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836140396] [2023-08-26 20:35:46,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:46,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 20:35:46,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:46,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 20:35:46,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-08-26 20:35:46,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 602 [2023-08-26 20:35:46,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 113 transitions, 621 flow. Second operand has 11 states, 11 states have (on average 216.36363636363637) internal successors, (2380), 11 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 20:35:46,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:46,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 602 [2023-08-26 20:35:46,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:47,119 INFO L124 PetriNetUnfolderBase]: 4500/7754 cut-off events. [2023-08-26 20:35:47,119 INFO L125 PetriNetUnfolderBase]: For 4027/4027 co-relation queries the response was YES. [2023-08-26 20:35:47,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19299 conditions, 7754 events. 4500/7754 cut-off events. For 4027/4027 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 44356 event pairs, 1714 based on Foata normal form. 0/6014 useless extension candidates. Maximal degree in co-relation 19270. Up to 5501 conditions per place. [2023-08-26 20:35:47,153 INFO L140 encePairwiseOnDemand]: 590/602 looper letters, 147 selfloop transitions, 30 changer transitions 3/187 dead transitions. [2023-08-26 20:35:47,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 187 transitions, 1302 flow [2023-08-26 20:35:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 20:35:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 20:35:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2284 transitions. [2023-08-26 20:35:47,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37940199335548175 [2023-08-26 20:35:47,158 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2284 transitions. [2023-08-26 20:35:47,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2284 transitions. [2023-08-26 20:35:47,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:47,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2284 transitions. [2023-08-26 20:35:47,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 228.4) internal successors, (2284), 10 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states 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 20:35:47,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 602.0) internal successors, (6622), 11 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states 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 20:35:47,169 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 602.0) internal successors, (6622), 11 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states 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 20:35:47,169 INFO L175 Difference]: Start difference. First operand has 132 places, 113 transitions, 621 flow. Second operand 10 states and 2284 transitions. [2023-08-26 20:35:47,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 187 transitions, 1302 flow [2023-08-26 20:35:47,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 187 transitions, 1267 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-26 20:35:47,184 INFO L231 Difference]: Finished difference. Result has 137 places, 114 transitions, 665 flow [2023-08-26 20:35:47,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=665, PETRI_PLACES=137, PETRI_TRANSITIONS=114} [2023-08-26 20:35:47,184 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 56 predicate places. [2023-08-26 20:35:47,184 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 114 transitions, 665 flow [2023-08-26 20:35:47,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 216.36363636363637) internal successors, (2380), 11 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 20:35:47,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:47,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:47,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 20:35:47,185 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err12ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:47,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1952793241, now seen corresponding path program 4 times [2023-08-26 20:35:47,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:47,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582974964] [2023-08-26 20:35:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:47,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:47,875 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 20:35:47,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:47,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582974964] [2023-08-26 20:35:47,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582974964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:47,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:47,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-26 20:35:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204565344] [2023-08-26 20:35:47,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:47,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 20:35:47,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:47,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 20:35:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-26 20:35:47,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 602 [2023-08-26 20:35:47,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 114 transitions, 665 flow. Second operand has 11 states, 11 states have (on average 216.36363636363637) internal successors, (2380), 11 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 20:35:47,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:47,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 602 [2023-08-26 20:35:47,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:48,922 INFO L124 PetriNetUnfolderBase]: 4462/7694 cut-off events. [2023-08-26 20:35:48,923 INFO L125 PetriNetUnfolderBase]: For 4290/4290 co-relation queries the response was YES. [2023-08-26 20:35:48,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19192 conditions, 7694 events. 4462/7694 cut-off events. For 4290/4290 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 43920 event pairs, 1692 based on Foata normal form. 0/5973 useless extension candidates. Maximal degree in co-relation 19161. Up to 5501 conditions per place. [2023-08-26 20:35:48,972 INFO L140 encePairwiseOnDemand]: 591/602 looper letters, 145 selfloop transitions, 30 changer transitions 3/185 dead transitions. [2023-08-26 20:35:48,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 185 transitions, 1328 flow [2023-08-26 20:35:48,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 20:35:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 20:35:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2281 transitions. [2023-08-26 20:35:48,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3789036544850498 [2023-08-26 20:35:48,976 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2281 transitions. [2023-08-26 20:35:48,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2281 transitions. [2023-08-26 20:35:48,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:48,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2281 transitions. [2023-08-26 20:35:48,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 228.1) internal successors, (2281), 10 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states 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 20:35:48,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 602.0) internal successors, (6622), 11 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states 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 20:35:48,986 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 602.0) internal successors, (6622), 11 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states 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 20:35:48,986 INFO L175 Difference]: Start difference. First operand has 137 places, 114 transitions, 665 flow. Second operand 10 states and 2281 transitions. [2023-08-26 20:35:48,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 185 transitions, 1328 flow [2023-08-26 20:35:49,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 185 transitions, 1275 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-26 20:35:49,002 INFO L231 Difference]: Finished difference. Result has 136 places, 112 transitions, 664 flow [2023-08-26 20:35:49,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=664, PETRI_PLACES=136, PETRI_TRANSITIONS=112} [2023-08-26 20:35:49,002 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 55 predicate places. [2023-08-26 20:35:49,003 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 112 transitions, 664 flow [2023-08-26 20:35:49,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 216.36363636363637) internal successors, (2380), 11 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 20:35:49,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:49,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:49,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 20:35:49,003 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:49,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:49,004 INFO L85 PathProgramCache]: Analyzing trace with hash 152435275, now seen corresponding path program 1 times [2023-08-26 20:35:49,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:49,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809353204] [2023-08-26 20:35:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:49,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:35:49,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:49,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809353204] [2023-08-26 20:35:49,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809353204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:49,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:49,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:35:49,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405846469] [2023-08-26 20:35:49,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:49,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:35:49,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:49,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:35:49,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:35:49,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 602 [2023-08-26 20:35:49,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 112 transitions, 664 flow. Second operand has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:49,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:49,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 602 [2023-08-26 20:35:49,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:49,703 INFO L124 PetriNetUnfolderBase]: 4990/8672 cut-off events. [2023-08-26 20:35:49,703 INFO L125 PetriNetUnfolderBase]: For 5166/5193 co-relation queries the response was YES. [2023-08-26 20:35:49,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21665 conditions, 8672 events. 4990/8672 cut-off events. For 5166/5193 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 53179 event pairs, 2112 based on Foata normal form. 27/6896 useless extension candidates. Maximal degree in co-relation 21634. Up to 6989 conditions per place. [2023-08-26 20:35:49,756 INFO L140 encePairwiseOnDemand]: 595/602 looper letters, 140 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2023-08-26 20:35:49,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 158 transitions, 1089 flow [2023-08-26 20:35:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:35:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:35:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 968 transitions. [2023-08-26 20:35:49,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359911406423035 [2023-08-26 20:35:49,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 968 transitions. [2023-08-26 20:35:49,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 968 transitions. [2023-08-26 20:35:49,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:49,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 968 transitions. [2023-08-26 20:35:49,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 20:35:49,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:49,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:49,761 INFO L175 Difference]: Start difference. First operand has 136 places, 112 transitions, 664 flow. Second operand 3 states and 968 transitions. [2023-08-26 20:35:49,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 158 transitions, 1089 flow [2023-08-26 20:35:49,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 158 transitions, 1029 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-26 20:35:49,773 INFO L231 Difference]: Finished difference. Result has 130 places, 113 transitions, 624 flow [2023-08-26 20:35:49,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=624, PETRI_PLACES=130, PETRI_TRANSITIONS=113} [2023-08-26 20:35:49,773 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 49 predicate places. [2023-08-26 20:35:49,773 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 113 transitions, 624 flow [2023-08-26 20:35:49,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:35:49,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:49,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:49,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 20:35:49,774 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:49,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:49,774 INFO L85 PathProgramCache]: Analyzing trace with hash 435176607, now seen corresponding path program 1 times [2023-08-26 20:35:49,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:49,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694334994] [2023-08-26 20:35:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:49,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:50,693 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 20:35:50,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694334994] [2023-08-26 20:35:50,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694334994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:50,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:50,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-26 20:35:50,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533423456] [2023-08-26 20:35:50,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:50,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 20:35:50,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:50,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 20:35:50,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-26 20:35:50,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 602 [2023-08-26 20:35:50,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 113 transitions, 624 flow. Second operand has 16 states, 16 states have (on average 212.1875) internal successors, (3395), 16 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states 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 20:35:50,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:50,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 602 [2023-08-26 20:35:50,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:52,007 INFO L124 PetriNetUnfolderBase]: 5222/9101 cut-off events. [2023-08-26 20:35:52,007 INFO L125 PetriNetUnfolderBase]: For 5356/5356 co-relation queries the response was YES. [2023-08-26 20:35:52,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23574 conditions, 9101 events. 5222/9101 cut-off events. For 5356/5356 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 54410 event pairs, 4147 based on Foata normal form. 0/7479 useless extension candidates. Maximal degree in co-relation 23542. Up to 8224 conditions per place. [2023-08-26 20:35:52,058 INFO L140 encePairwiseOnDemand]: 582/602 looper letters, 115 selfloop transitions, 35 changer transitions 1/158 dead transitions. [2023-08-26 20:35:52,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 158 transitions, 1087 flow [2023-08-26 20:35:52,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 20:35:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 20:35:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3502 transitions. [2023-08-26 20:35:52,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3635797342192691 [2023-08-26 20:35:52,061 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3502 transitions. [2023-08-26 20:35:52,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3502 transitions. [2023-08-26 20:35:52,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:52,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3502 transitions. [2023-08-26 20:35:52,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 218.875) internal successors, (3502), 16 states have internal predecessors, (3502), 0 states have call successors, (0), 0 states 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 20:35:52,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 602.0) internal successors, (10234), 17 states have internal predecessors, (10234), 0 states have call successors, (0), 0 states 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 20:35:52,074 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 602.0) internal successors, (10234), 17 states have internal predecessors, (10234), 0 states have call successors, (0), 0 states 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 20:35:52,074 INFO L175 Difference]: Start difference. First operand has 130 places, 113 transitions, 624 flow. Second operand 16 states and 3502 transitions. [2023-08-26 20:35:52,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 158 transitions, 1087 flow [2023-08-26 20:35:52,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 158 transitions, 1083 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:35:52,088 INFO L231 Difference]: Finished difference. Result has 149 places, 126 transitions, 789 flow [2023-08-26 20:35:52,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=789, PETRI_PLACES=149, PETRI_TRANSITIONS=126} [2023-08-26 20:35:52,089 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 68 predicate places. [2023-08-26 20:35:52,089 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 126 transitions, 789 flow [2023-08-26 20:35:52,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 212.1875) internal successors, (3395), 16 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states 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 20:35:52,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:52,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:52,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 20:35:52,090 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:52,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:52,090 INFO L85 PathProgramCache]: Analyzing trace with hash 435176585, now seen corresponding path program 1 times [2023-08-26 20:35:52,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:52,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530705550] [2023-08-26 20:35:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:52,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:52,590 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 20:35:52,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:52,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530705550] [2023-08-26 20:35:52,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530705550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:52,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:52,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-26 20:35:52,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524222263] [2023-08-26 20:35:52,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:52,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 20:35:52,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:52,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 20:35:52,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-08-26 20:35:52,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 602 [2023-08-26 20:35:52,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 126 transitions, 789 flow. Second operand has 14 states, 14 states have (on average 214.35714285714286) internal successors, (3001), 14 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states 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 20:35:52,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:52,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 602 [2023-08-26 20:35:52,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:35:55,589 INFO L124 PetriNetUnfolderBase]: 14850/25573 cut-off events. [2023-08-26 20:35:55,590 INFO L125 PetriNetUnfolderBase]: For 11876/11876 co-relation queries the response was YES. [2023-08-26 20:35:55,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64825 conditions, 25573 events. 14850/25573 cut-off events. For 11876/11876 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 186197 event pairs, 4892 based on Foata normal form. 203/20554 useless extension candidates. Maximal degree in co-relation 64788. Up to 6749 conditions per place. [2023-08-26 20:35:55,821 INFO L140 encePairwiseOnDemand]: 586/602 looper letters, 423 selfloop transitions, 63 changer transitions 3/496 dead transitions. [2023-08-26 20:35:55,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 496 transitions, 3005 flow [2023-08-26 20:35:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 20:35:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 20:35:55,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4256 transitions. [2023-08-26 20:35:55,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39276485788113696 [2023-08-26 20:35:55,825 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4256 transitions. [2023-08-26 20:35:55,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4256 transitions. [2023-08-26 20:35:55,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:35:55,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4256 transitions. [2023-08-26 20:35:55,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 236.44444444444446) internal successors, (4256), 18 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states 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 20:35:55,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 602.0) internal successors, (11438), 19 states have internal predecessors, (11438), 0 states have call successors, (0), 0 states 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 20:35:56,084 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 602.0) internal successors, (11438), 19 states have internal predecessors, (11438), 0 states have call successors, (0), 0 states 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 20:35:56,085 INFO L175 Difference]: Start difference. First operand has 149 places, 126 transitions, 789 flow. Second operand 18 states and 4256 transitions. [2023-08-26 20:35:56,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 496 transitions, 3005 flow [2023-08-26 20:35:56,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 496 transitions, 2940 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-08-26 20:35:56,126 INFO L231 Difference]: Finished difference. Result has 162 places, 144 transitions, 1000 flow [2023-08-26 20:35:56,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1000, PETRI_PLACES=162, PETRI_TRANSITIONS=144} [2023-08-26 20:35:56,127 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 81 predicate places. [2023-08-26 20:35:56,127 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 144 transitions, 1000 flow [2023-08-26 20:35:56,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 214.35714285714286) internal successors, (3001), 14 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states 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 20:35:56,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:35:56,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:35:56,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 20:35:56,128 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:35:56,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:35:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash 278808065, now seen corresponding path program 1 times [2023-08-26 20:35:56,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:35:56,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323012196] [2023-08-26 20:35:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:35:56,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:35:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:35:57,742 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 20:35:57,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:35:57,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323012196] [2023-08-26 20:35:57,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323012196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:35:57,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:35:57,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-26 20:35:57,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166412553] [2023-08-26 20:35:57,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:35:57,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 20:35:57,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:35:57,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 20:35:57,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-08-26 20:35:57,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 602 [2023-08-26 20:35:57,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 144 transitions, 1000 flow. Second operand has 17 states, 17 states have (on average 208.1764705882353) internal successors, (3539), 17 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states 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 20:35:57,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:35:57,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 602 [2023-08-26 20:35:57,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:36:01,462 INFO L124 PetriNetUnfolderBase]: 15591/26833 cut-off events. [2023-08-26 20:36:01,462 INFO L125 PetriNetUnfolderBase]: For 18987/18987 co-relation queries the response was YES. [2023-08-26 20:36:01,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72698 conditions, 26833 events. 15591/26833 cut-off events. For 18987/18987 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 195122 event pairs, 10537 based on Foata normal form. 0/21626 useless extension candidates. Maximal degree in co-relation 72657. Up to 23758 conditions per place. [2023-08-26 20:36:01,672 INFO L140 encePairwiseOnDemand]: 584/602 looper letters, 273 selfloop transitions, 57 changer transitions 3/340 dead transitions. [2023-08-26 20:36:01,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 340 transitions, 2631 flow [2023-08-26 20:36:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 20:36:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 20:36:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4993 transitions. [2023-08-26 20:36:01,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606095623284703 [2023-08-26 20:36:01,678 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4993 transitions. [2023-08-26 20:36:01,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4993 transitions. [2023-08-26 20:36:01,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:36:01,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4993 transitions. [2023-08-26 20:36:01,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 217.08695652173913) internal successors, (4993), 23 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states 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 20:36:01,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 602.0) internal successors, (14448), 24 states have internal predecessors, (14448), 0 states have call successors, (0), 0 states 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 20:36:01,698 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 602.0) internal successors, (14448), 24 states have internal predecessors, (14448), 0 states have call successors, (0), 0 states 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 20:36:01,699 INFO L175 Difference]: Start difference. First operand has 162 places, 144 transitions, 1000 flow. Second operand 23 states and 4993 transitions. [2023-08-26 20:36:01,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 340 transitions, 2631 flow [2023-08-26 20:36:01,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 340 transitions, 2555 flow, removed 25 selfloop flow, removed 9 redundant places. [2023-08-26 20:36:01,771 INFO L231 Difference]: Finished difference. Result has 181 places, 161 transitions, 1235 flow [2023-08-26 20:36:01,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1235, PETRI_PLACES=181, PETRI_TRANSITIONS=161} [2023-08-26 20:36:01,771 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 100 predicate places. [2023-08-26 20:36:01,771 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 161 transitions, 1235 flow [2023-08-26 20:36:01,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 208.1764705882353) internal successors, (3539), 17 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states 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 20:36:01,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:36:01,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:36:01,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 20:36:01,772 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:36:01,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:36:01,773 INFO L85 PathProgramCache]: Analyzing trace with hash 723686939, now seen corresponding path program 2 times [2023-08-26 20:36:01,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:36:01,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185622249] [2023-08-26 20:36:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:36:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:36:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:36:03,348 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 20:36:03,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:36:03,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185622249] [2023-08-26 20:36:03,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185622249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:36:03,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:36:03,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-26 20:36:03,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793776820] [2023-08-26 20:36:03,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:36:03,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 20:36:03,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:36:03,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 20:36:03,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-08-26 20:36:03,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 602 [2023-08-26 20:36:03,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 161 transitions, 1235 flow. Second operand has 17 states, 17 states have (on average 208.1764705882353) internal successors, (3539), 17 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states 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 20:36:03,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:36:03,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 602 [2023-08-26 20:36:03,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:36:07,193 INFO L124 PetriNetUnfolderBase]: 16132/27871 cut-off events. [2023-08-26 20:36:07,193 INFO L125 PetriNetUnfolderBase]: For 20570/20570 co-relation queries the response was YES. [2023-08-26 20:36:07,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76212 conditions, 27871 events. 16132/27871 cut-off events. For 20570/20570 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 204965 event pairs, 10061 based on Foata normal form. 26/22672 useless extension candidates. Maximal degree in co-relation 76171. Up to 22900 conditions per place. [2023-08-26 20:36:07,409 INFO L140 encePairwiseOnDemand]: 583/602 looper letters, 267 selfloop transitions, 76 changer transitions 3/353 dead transitions. [2023-08-26 20:36:07,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 353 transitions, 2863 flow [2023-08-26 20:36:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 20:36:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 20:36:07,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4992 transitions. [2023-08-26 20:36:07,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36053733930377 [2023-08-26 20:36:07,415 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4992 transitions. [2023-08-26 20:36:07,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4992 transitions. [2023-08-26 20:36:07,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:36:07,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4992 transitions. [2023-08-26 20:36:07,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 217.04347826086956) internal successors, (4992), 23 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states 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 20:36:07,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 602.0) internal successors, (14448), 24 states have internal predecessors, (14448), 0 states have call successors, (0), 0 states 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 20:36:07,432 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 602.0) internal successors, (14448), 24 states have internal predecessors, (14448), 0 states have call successors, (0), 0 states 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 20:36:07,432 INFO L175 Difference]: Start difference. First operand has 181 places, 161 transitions, 1235 flow. Second operand 23 states and 4992 transitions. [2023-08-26 20:36:07,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 353 transitions, 2863 flow [2023-08-26 20:36:07,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 353 transitions, 2809 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-26 20:36:07,509 INFO L231 Difference]: Finished difference. Result has 208 places, 174 transitions, 1545 flow [2023-08-26 20:36:07,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1545, PETRI_PLACES=208, PETRI_TRANSITIONS=174} [2023-08-26 20:36:07,510 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 127 predicate places. [2023-08-26 20:36:07,510 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 174 transitions, 1545 flow [2023-08-26 20:36:07,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 208.1764705882353) internal successors, (3539), 17 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states 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 20:36:07,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:36:07,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:36:07,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 20:36:07,511 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:36:07,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:36:07,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1260355675, now seen corresponding path program 3 times [2023-08-26 20:36:07,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:36:07,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395270732] [2023-08-26 20:36:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:36:07,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:36:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:36:08,566 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 20:36:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:36:08,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395270732] [2023-08-26 20:36:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395270732] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:36:08,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:36:08,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-26 20:36:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981009971] [2023-08-26 20:36:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:36:08,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 20:36:08,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:36:08,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 20:36:08,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-08-26 20:36:08,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 602 [2023-08-26 20:36:08,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 174 transitions, 1545 flow. Second operand has 17 states, 17 states have (on average 208.1764705882353) internal successors, (3539), 17 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states 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 20:36:08,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:36:08,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 602 [2023-08-26 20:36:08,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:36:12,294 INFO L124 PetriNetUnfolderBase]: 16271/28114 cut-off events. [2023-08-26 20:36:12,294 INFO L125 PetriNetUnfolderBase]: For 24646/24654 co-relation queries the response was YES. [2023-08-26 20:36:12,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79325 conditions, 28114 events. 16271/28114 cut-off events. For 24646/24654 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 206883 event pairs, 7473 based on Foata normal form. 26/22904 useless extension candidates. Maximal degree in co-relation 79274. Up to 21042 conditions per place. [2023-08-26 20:36:12,530 INFO L140 encePairwiseOnDemand]: 584/602 looper letters, 247 selfloop transitions, 86 changer transitions 3/343 dead transitions. [2023-08-26 20:36:12,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 343 transitions, 3011 flow [2023-08-26 20:36:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 20:36:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 20:36:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4560 transitions. [2023-08-26 20:36:12,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070242050308493 [2023-08-26 20:36:12,533 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4560 transitions. [2023-08-26 20:36:12,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4560 transitions. [2023-08-26 20:36:12,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:36:12,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4560 transitions. [2023-08-26 20:36:12,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 217.14285714285714) internal successors, (4560), 21 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states 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 20:36:12,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 602.0) internal successors, (13244), 22 states have internal predecessors, (13244), 0 states have call successors, (0), 0 states 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 20:36:12,549 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 602.0) internal successors, (13244), 22 states have internal predecessors, (13244), 0 states have call successors, (0), 0 states 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 20:36:12,549 INFO L175 Difference]: Start difference. First operand has 208 places, 174 transitions, 1545 flow. Second operand 21 states and 4560 transitions. [2023-08-26 20:36:12,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 343 transitions, 3011 flow [2023-08-26 20:36:12,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 343 transitions, 2901 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-08-26 20:36:12,675 INFO L231 Difference]: Finished difference. Result has 218 places, 181 transitions, 1712 flow [2023-08-26 20:36:12,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1712, PETRI_PLACES=218, PETRI_TRANSITIONS=181} [2023-08-26 20:36:12,676 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 137 predicate places. [2023-08-26 20:36:12,676 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 181 transitions, 1712 flow [2023-08-26 20:36:12,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 208.1764705882353) internal successors, (3539), 17 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states 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 20:36:12,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:36:12,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:36:12,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 20:36:12,677 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:36:12,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:36:12,677 INFO L85 PathProgramCache]: Analyzing trace with hash 417293175, now seen corresponding path program 1 times [2023-08-26 20:36:12,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:36:12,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102419684] [2023-08-26 20:36:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:36:12,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:36:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:36:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:36:13,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:36:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102419684] [2023-08-26 20:36:13,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102419684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:36:13,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:36:13,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-26 20:36:13,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610891893] [2023-08-26 20:36:13,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:36:13,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 20:36:13,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:36:13,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 20:36:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-08-26 20:36:13,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 602 [2023-08-26 20:36:13,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 181 transitions, 1712 flow. Second operand has 15 states, 15 states have (on average 210.33333333333334) internal successors, (3155), 15 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states 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 20:36:13,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:36:13,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 602 [2023-08-26 20:36:13,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:36:16,856 INFO L124 PetriNetUnfolderBase]: 16065/27563 cut-off events. [2023-08-26 20:36:16,857 INFO L125 PetriNetUnfolderBase]: For 27334/27334 co-relation queries the response was YES. [2023-08-26 20:36:17,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78713 conditions, 27563 events. 16065/27563 cut-off events. For 27334/27334 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 201227 event pairs, 6682 based on Foata normal form. 163/22509 useless extension candidates. Maximal degree in co-relation 78659. Up to 20453 conditions per place. [2023-08-26 20:36:17,075 INFO L140 encePairwiseOnDemand]: 589/602 looper letters, 198 selfloop transitions, 63 changer transitions 0/268 dead transitions. [2023-08-26 20:36:17,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 268 transitions, 2528 flow [2023-08-26 20:36:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 20:36:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 20:36:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2238 transitions. [2023-08-26 20:36:17,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717607973421927 [2023-08-26 20:36:17,078 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2238 transitions. [2023-08-26 20:36:17,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2238 transitions. [2023-08-26 20:36:17,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:36:17,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2238 transitions. [2023-08-26 20:36:17,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 223.8) internal successors, (2238), 10 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states 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 20:36:17,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 602.0) internal successors, (6622), 11 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states 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 20:36:17,084 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 602.0) internal successors, (6622), 11 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states 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 20:36:17,084 INFO L175 Difference]: Start difference. First operand has 218 places, 181 transitions, 1712 flow. Second operand 10 states and 2238 transitions. [2023-08-26 20:36:17,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 268 transitions, 2528 flow [2023-08-26 20:36:17,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 268 transitions, 2357 flow, removed 8 selfloop flow, removed 15 redundant places. [2023-08-26 20:36:17,206 INFO L231 Difference]: Finished difference. Result has 211 places, 176 transitions, 1614 flow [2023-08-26 20:36:17,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1614, PETRI_PLACES=211, PETRI_TRANSITIONS=176} [2023-08-26 20:36:17,206 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 130 predicate places. [2023-08-26 20:36:17,206 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 176 transitions, 1614 flow [2023-08-26 20:36:17,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 210.33333333333334) internal successors, (3155), 15 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states 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 20:36:17,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:36:17,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:36:17,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 20:36:17,207 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:36:17,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:36:17,207 INFO L85 PathProgramCache]: Analyzing trace with hash 608506961, now seen corresponding path program 4 times [2023-08-26 20:36:17,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:36:17,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032491334] [2023-08-26 20:36:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:36:17,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:36:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:36:18,192 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 20:36:18,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:36:18,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032491334] [2023-08-26 20:36:18,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032491334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:36:18,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:36:18,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-26 20:36:18,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659834550] [2023-08-26 20:36:18,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:36:18,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 20:36:18,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:36:18,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 20:36:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-08-26 20:36:18,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 602 [2023-08-26 20:36:18,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 176 transitions, 1614 flow. Second operand has 17 states, 17 states have (on average 208.1764705882353) internal successors, (3539), 17 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states 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 20:36:18,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:36:18,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 602 [2023-08-26 20:36:18,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:36:21,684 INFO L124 PetriNetUnfolderBase]: 16109/27733 cut-off events. [2023-08-26 20:36:21,685 INFO L125 PetriNetUnfolderBase]: For 30067/30075 co-relation queries the response was YES. [2023-08-26 20:36:21,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80185 conditions, 27733 events. 16109/27733 cut-off events. For 30067/30075 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 202673 event pairs, 7305 based on Foata normal form. 26/22594 useless extension candidates. Maximal degree in co-relation 80136. Up to 20719 conditions per place. [2023-08-26 20:36:21,947 INFO L140 encePairwiseOnDemand]: 585/602 looper letters, 215 selfloop transitions, 84 changer transitions 3/309 dead transitions. [2023-08-26 20:36:21,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 309 transitions, 2839 flow [2023-08-26 20:36:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 20:36:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 20:36:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3701 transitions. [2023-08-26 20:36:21,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36163767832714483 [2023-08-26 20:36:21,952 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3701 transitions. [2023-08-26 20:36:21,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3701 transitions. [2023-08-26 20:36:21,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:36:21,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3701 transitions. [2023-08-26 20:36:21,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 217.7058823529412) internal successors, (3701), 17 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states 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 20:36:21,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 602.0) internal successors, (10836), 18 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states 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 20:36:21,966 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 602.0) internal successors, (10836), 18 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states 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 20:36:21,966 INFO L175 Difference]: Start difference. First operand has 211 places, 176 transitions, 1614 flow. Second operand 17 states and 3701 transitions. [2023-08-26 20:36:21,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 309 transitions, 2839 flow [2023-08-26 20:36:22,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 309 transitions, 2709 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-26 20:36:22,103 INFO L231 Difference]: Finished difference. Result has 221 places, 180 transitions, 1738 flow [2023-08-26 20:36:22,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1738, PETRI_PLACES=221, PETRI_TRANSITIONS=180} [2023-08-26 20:36:22,104 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 140 predicate places. [2023-08-26 20:36:22,104 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 180 transitions, 1738 flow [2023-08-26 20:36:22,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 208.1764705882353) internal successors, (3539), 17 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states 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 20:36:22,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:36:22,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:36:22,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 20:36:22,105 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:36:22,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:36:22,105 INFO L85 PathProgramCache]: Analyzing trace with hash 605912261, now seen corresponding path program 5 times [2023-08-26 20:36:22,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:36:22,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42825357] [2023-08-26 20:36:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:36:22,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:36:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:36:23,224 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 20:36:23,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:36:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42825357] [2023-08-26 20:36:23,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42825357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:36:23,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:36:23,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-26 20:36:23,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111230073] [2023-08-26 20:36:23,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:36:23,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 20:36:23,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:36:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 20:36:23,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-26 20:36:23,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 602 [2023-08-26 20:36:23,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 180 transitions, 1738 flow. Second operand has 17 states, 17 states have (on average 208.1764705882353) internal successors, (3539), 17 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states 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 20:36:23,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:36:23,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 602 [2023-08-26 20:36:23,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:36:26,789 INFO L124 PetriNetUnfolderBase]: 16119/27847 cut-off events. [2023-08-26 20:36:26,790 INFO L125 PetriNetUnfolderBase]: For 30183/30191 co-relation queries the response was YES. [2023-08-26 20:36:26,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80173 conditions, 27847 events. 16119/27847 cut-off events. For 30183/30191 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 203857 event pairs, 7256 based on Foata normal form. 26/22690 useless extension candidates. Maximal degree in co-relation 80121. Up to 20601 conditions per place. [2023-08-26 20:36:27,066 INFO L140 encePairwiseOnDemand]: 585/602 looper letters, 217 selfloop transitions, 84 changer transitions 3/311 dead transitions. [2023-08-26 20:36:27,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 311 transitions, 2954 flow [2023-08-26 20:36:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 20:36:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 20:36:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3700 transitions. [2023-08-26 20:36:27,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36153996482313855 [2023-08-26 20:36:27,069 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3700 transitions. [2023-08-26 20:36:27,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3700 transitions. [2023-08-26 20:36:27,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:36:27,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3700 transitions. [2023-08-26 20:36:27,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 217.64705882352942) internal successors, (3700), 17 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states 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 20:36:27,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 602.0) internal successors, (10836), 18 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states 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 20:36:27,080 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 602.0) internal successors, (10836), 18 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states 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 20:36:27,080 INFO L175 Difference]: Start difference. First operand has 221 places, 180 transitions, 1738 flow. Second operand 17 states and 3700 transitions. [2023-08-26 20:36:27,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 311 transitions, 2954 flow [2023-08-26 20:36:27,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 311 transitions, 2842 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-08-26 20:36:27,437 INFO L231 Difference]: Finished difference. Result has 228 places, 182 transitions, 1854 flow [2023-08-26 20:36:27,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1854, PETRI_PLACES=228, PETRI_TRANSITIONS=182} [2023-08-26 20:36:27,437 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 147 predicate places. [2023-08-26 20:36:27,438 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 182 transitions, 1854 flow [2023-08-26 20:36:27,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 208.1764705882353) internal successors, (3539), 17 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states 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 20:36:27,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:36:27,438 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:36:27,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-26 20:36:27,438 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:36:27,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:36:27,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1154379640, now seen corresponding path program 1 times [2023-08-26 20:36:27,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:36:27,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390160561] [2023-08-26 20:36:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:36:27,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:36:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:36:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 20:36:27,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:36:27,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390160561] [2023-08-26 20:36:27,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390160561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:36:27,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:36:27,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:36:27,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797536601] [2023-08-26 20:36:27,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:36:27,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:36:27,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:36:27,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:36:27,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:36:27,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 602 [2023-08-26 20:36:27,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 182 transitions, 1854 flow. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:36:27,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:36:27,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 602 [2023-08-26 20:36:27,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:36:30,228 INFO L124 PetriNetUnfolderBase]: 14125/24676 cut-off events. [2023-08-26 20:36:30,228 INFO L125 PetriNetUnfolderBase]: For 33833/33884 co-relation queries the response was YES. [2023-08-26 20:36:30,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72671 conditions, 24676 events. 14125/24676 cut-off events. For 33833/33884 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 179573 event pairs, 6173 based on Foata normal form. 51/20702 useless extension candidates. Maximal degree in co-relation 72617. Up to 17648 conditions per place. [2023-08-26 20:36:30,436 INFO L140 encePairwiseOnDemand]: 597/602 looper letters, 185 selfloop transitions, 4 changer transitions 0/209 dead transitions. [2023-08-26 20:36:30,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 209 transitions, 2331 flow [2023-08-26 20:36:30,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:36:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:36:30,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 947 transitions. [2023-08-26 20:36:30,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243632336655593 [2023-08-26 20:36:30,438 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 947 transitions. [2023-08-26 20:36:30,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 947 transitions. [2023-08-26 20:36:30,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:36:30,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 947 transitions. [2023-08-26 20:36:30,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states 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 20:36:30,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:36:30,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:36:30,442 INFO L175 Difference]: Start difference. First operand has 228 places, 182 transitions, 1854 flow. Second operand 3 states and 947 transitions. [2023-08-26 20:36:30,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 209 transitions, 2331 flow [2023-08-26 20:36:30,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 209 transitions, 2213 flow, removed 3 selfloop flow, removed 12 redundant places. [2023-08-26 20:36:30,651 INFO L231 Difference]: Finished difference. Result has 217 places, 181 transitions, 1744 flow [2023-08-26 20:36:30,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1744, PETRI_PLACES=217, PETRI_TRANSITIONS=181} [2023-08-26 20:36:30,651 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 136 predicate places. [2023-08-26 20:36:30,651 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 181 transitions, 1744 flow [2023-08-26 20:36:30,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:36:30,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:36:30,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:36:30,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-26 20:36:30,652 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:36:30,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:36:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2135963914, now seen corresponding path program 1 times [2023-08-26 20:36:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:36:30,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978409394] [2023-08-26 20:36:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:36:30,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:36:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:36:31,289 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 20:36:31,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:36:31,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978409394] [2023-08-26 20:36:31,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978409394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:36:31,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:36:31,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-26 20:36:31,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571202105] [2023-08-26 20:36:31,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:36:31,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 20:36:31,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:36:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 20:36:31,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-26 20:36:31,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 602 [2023-08-26 20:36:31,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 181 transitions, 1744 flow. Second operand has 14 states, 14 states have (on average 224.57142857142858) internal successors, (3144), 14 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 20:36:31,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:36:31,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 602 [2023-08-26 20:36:31,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:36:35,144 INFO L124 PetriNetUnfolderBase]: 17066/29472 cut-off events. [2023-08-26 20:36:35,145 INFO L125 PetriNetUnfolderBase]: For 39826/39826 co-relation queries the response was YES. [2023-08-26 20:36:35,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87831 conditions, 29472 events. 17066/29472 cut-off events. For 39826/39826 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 216955 event pairs, 11930 based on Foata normal form. 0/25412 useless extension candidates. Maximal degree in co-relation 87777. Up to 24027 conditions per place. [2023-08-26 20:36:35,426 INFO L140 encePairwiseOnDemand]: 585/602 looper letters, 249 selfloop transitions, 53 changer transitions 0/309 dead transitions. [2023-08-26 20:36:35,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 309 transitions, 2970 flow [2023-08-26 20:36:35,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 20:36:35,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 20:36:35,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3521 transitions. [2023-08-26 20:36:35,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38992248062015505 [2023-08-26 20:36:35,431 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3521 transitions. [2023-08-26 20:36:35,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3521 transitions. [2023-08-26 20:36:35,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:36:35,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3521 transitions. [2023-08-26 20:36:35,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 234.73333333333332) internal successors, (3521), 15 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states 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 20:36:35,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 602.0) internal successors, (9632), 16 states have internal predecessors, (9632), 0 states have call successors, (0), 0 states 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 20:36:35,444 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 602.0) internal successors, (9632), 16 states have internal predecessors, (9632), 0 states have call successors, (0), 0 states 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 20:36:35,445 INFO L175 Difference]: Start difference. First operand has 217 places, 181 transitions, 1744 flow. Second operand 15 states and 3521 transitions. [2023-08-26 20:36:35,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 309 transitions, 2970 flow [2023-08-26 20:36:35,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 309 transitions, 2962 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:36:35,842 INFO L231 Difference]: Finished difference. Result has 237 places, 207 transitions, 2129 flow [2023-08-26 20:36:35,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=1740, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2129, PETRI_PLACES=237, PETRI_TRANSITIONS=207} [2023-08-26 20:36:35,843 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 156 predicate places. [2023-08-26 20:36:35,843 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 207 transitions, 2129 flow [2023-08-26 20:36:35,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 224.57142857142858) internal successors, (3144), 14 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 20:36:35,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:36:35,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:36:35,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-26 20:36:35,844 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:36:35,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:36:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2135963913, now seen corresponding path program 1 times [2023-08-26 20:36:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:36:35,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778310436] [2023-08-26 20:36:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:36:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:36:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:36:36,248 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 20:36:36,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:36:36,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778310436] [2023-08-26 20:36:36,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778310436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:36:36,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:36:36,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-26 20:36:36,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820017355] [2023-08-26 20:36:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:36:36,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 20:36:36,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:36:36,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 20:36:36,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-26 20:36:36,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 602 [2023-08-26 20:36:36,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 207 transitions, 2129 flow. Second operand has 12 states, 12 states have (on average 226.83333333333334) internal successors, (2722), 12 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states 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 20:36:36,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:36:36,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 602 [2023-08-26 20:36:36,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:36:44,971 INFO L124 PetriNetUnfolderBase]: 36969/64004 cut-off events. [2023-08-26 20:36:44,972 INFO L125 PetriNetUnfolderBase]: For 67232/67232 co-relation queries the response was YES. [2023-08-26 20:36:45,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184227 conditions, 64004 events. 36969/64004 cut-off events. For 67232/67232 co-relation queries the response was YES. Maximal size of possible extension queue 1408. Compared 533913 event pairs, 10419 based on Foata normal form. 0/55914 useless extension candidates. Maximal degree in co-relation 184165. Up to 19050 conditions per place. [2023-08-26 20:36:45,890 INFO L140 encePairwiseOnDemand]: 586/602 looper letters, 403 selfloop transitions, 120 changer transitions 3/533 dead transitions. [2023-08-26 20:36:45,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 533 transitions, 4499 flow [2023-08-26 20:36:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 20:36:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 20:36:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3956 transitions. [2023-08-26 20:36:45,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2023-08-26 20:36:45,895 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3956 transitions. [2023-08-26 20:36:45,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3956 transitions. [2023-08-26 20:36:45,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:36:45,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3956 transitions. [2023-08-26 20:36:45,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 247.25) internal successors, (3956), 16 states have internal predecessors, (3956), 0 states have call successors, (0), 0 states 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 20:36:45,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 602.0) internal successors, (10234), 17 states have internal predecessors, (10234), 0 states have call successors, (0), 0 states 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 20:36:45,909 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 602.0) internal successors, (10234), 17 states have internal predecessors, (10234), 0 states have call successors, (0), 0 states 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 20:36:45,909 INFO L175 Difference]: Start difference. First operand has 237 places, 207 transitions, 2129 flow. Second operand 16 states and 3956 transitions. [2023-08-26 20:36:45,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 533 transitions, 4499 flow [2023-08-26 20:36:46,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 533 transitions, 4468 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-26 20:36:46,398 INFO L231 Difference]: Finished difference. Result has 252 places, 244 transitions, 2814 flow [2023-08-26 20:36:46,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2814, PETRI_PLACES=252, PETRI_TRANSITIONS=244} [2023-08-26 20:36:46,399 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 171 predicate places. [2023-08-26 20:36:46,399 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 244 transitions, 2814 flow [2023-08-26 20:36:46,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 226.83333333333334) internal successors, (2722), 12 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states 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 20:36:46,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:36:46,400 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:36:46,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-26 20:36:46,400 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:36:46,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:36:46,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1154379598, now seen corresponding path program 1 times [2023-08-26 20:36:46,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:36:46,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862275080] [2023-08-26 20:36:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:36:46,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:36:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:36:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:36:46,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:36:46,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862275080] [2023-08-26 20:36:46,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862275080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:36:46,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:36:46,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 20:36:46,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479194591] [2023-08-26 20:36:46,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:36:46,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:36:46,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:36:46,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:36:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:36:46,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 602 [2023-08-26 20:36:46,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 244 transitions, 2814 flow. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:36:46,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:36:46,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 602 [2023-08-26 20:36:46,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:36:53,927 INFO L124 PetriNetUnfolderBase]: 31221/54806 cut-off events. [2023-08-26 20:36:53,928 INFO L125 PetriNetUnfolderBase]: For 97597/97648 co-relation queries the response was YES. [2023-08-26 20:36:54,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171217 conditions, 54806 events. 31221/54806 cut-off events. For 97597/97648 co-relation queries the response was YES. Maximal size of possible extension queue 1233. Compared 454259 event pairs, 15780 based on Foata normal form. 2897/51914 useless extension candidates. Maximal degree in co-relation 171148. Up to 48111 conditions per place. [2023-08-26 20:36:54,736 INFO L140 encePairwiseOnDemand]: 599/602 looper letters, 230 selfloop transitions, 1 changer transitions 0/251 dead transitions. [2023-08-26 20:36:54,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 251 transitions, 3330 flow [2023-08-26 20:36:54,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:36:54,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:36:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 926 transitions. [2023-08-26 20:36:54,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512735326688815 [2023-08-26 20:36:54,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 926 transitions. [2023-08-26 20:36:54,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 926 transitions. [2023-08-26 20:36:54,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:36:54,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 926 transitions. [2023-08-26 20:36:54,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states 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 20:36:54,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:36:54,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:36:54,740 INFO L175 Difference]: Start difference. First operand has 252 places, 244 transitions, 2814 flow. Second operand 3 states and 926 transitions. [2023-08-26 20:36:54,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 251 transitions, 3330 flow [2023-08-26 20:36:55,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 251 transitions, 3243 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-08-26 20:36:55,264 INFO L231 Difference]: Finished difference. Result has 247 places, 242 transitions, 2721 flow [2023-08-26 20:36:55,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2721, PETRI_PLACES=247, PETRI_TRANSITIONS=242} [2023-08-26 20:36:55,264 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 166 predicate places. [2023-08-26 20:36:55,265 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 242 transitions, 2721 flow [2023-08-26 20:36:55,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states 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 20:36:55,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:36:55,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:36:55,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-26 20:36:55,265 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:36:55,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:36:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash -745842098, now seen corresponding path program 1 times [2023-08-26 20:36:55,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:36:55,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295037715] [2023-08-26 20:36:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:36:55,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:36:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:36:56,257 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 20:36:56,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:36:56,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295037715] [2023-08-26 20:36:56,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295037715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:36:56,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:36:56,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-26 20:36:56,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205961517] [2023-08-26 20:36:56,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:36:56,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 20:36:56,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:36:56,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 20:36:56,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-08-26 20:36:56,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 602 [2023-08-26 20:36:56,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 242 transitions, 2721 flow. Second operand has 15 states, 15 states have (on average 220.53333333333333) internal successors, (3308), 15 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states 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 20:36:56,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:36:56,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 602 [2023-08-26 20:36:56,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:37:05,048 INFO L124 PetriNetUnfolderBase]: 34283/59580 cut-off events. [2023-08-26 20:37:05,049 INFO L125 PetriNetUnfolderBase]: For 91156/91156 co-relation queries the response was YES. [2023-08-26 20:37:05,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184464 conditions, 59580 events. 34283/59580 cut-off events. For 91156/91156 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 489532 event pairs, 21221 based on Foata normal form. 63/53432 useless extension candidates. Maximal degree in co-relation 184396. Up to 49043 conditions per place. [2023-08-26 20:37:06,252 INFO L140 encePairwiseOnDemand]: 584/602 looper letters, 329 selfloop transitions, 77 changer transitions 0/413 dead transitions. [2023-08-26 20:37:06,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 413 transitions, 4452 flow [2023-08-26 20:37:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 20:37:06,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 20:37:06,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3715 transitions. [2023-08-26 20:37:06,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856935215946844 [2023-08-26 20:37:06,255 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3715 transitions. [2023-08-26 20:37:06,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3715 transitions. [2023-08-26 20:37:06,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:37:06,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3715 transitions. [2023-08-26 20:37:06,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 232.1875) internal successors, (3715), 16 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states 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 20:37:06,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 602.0) internal successors, (10234), 17 states have internal predecessors, (10234), 0 states have call successors, (0), 0 states 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 20:37:06,262 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 602.0) internal successors, (10234), 17 states have internal predecessors, (10234), 0 states have call successors, (0), 0 states 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 20:37:06,262 INFO L175 Difference]: Start difference. First operand has 247 places, 242 transitions, 2721 flow. Second operand 16 states and 3715 transitions. [2023-08-26 20:37:06,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 413 transitions, 4452 flow [2023-08-26 20:37:06,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 413 transitions, 4450 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 20:37:06,882 INFO L231 Difference]: Finished difference. Result has 266 places, 256 transitions, 3165 flow [2023-08-26 20:37:06,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=2720, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3165, PETRI_PLACES=266, PETRI_TRANSITIONS=256} [2023-08-26 20:37:06,883 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 185 predicate places. [2023-08-26 20:37:06,883 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 256 transitions, 3165 flow [2023-08-26 20:37:06,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 220.53333333333333) internal successors, (3308), 15 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states 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 20:37:06,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:37:06,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:37:06,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-26 20:37:06,884 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:37:06,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:37:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1055864036, now seen corresponding path program 2 times [2023-08-26 20:37:06,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:37:06,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111737252] [2023-08-26 20:37:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:37:06,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:37:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:37:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:37:07,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:37:07,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111737252] [2023-08-26 20:37:07,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111737252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:37:07,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:37:07,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-26 20:37:07,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377215747] [2023-08-26 20:37:07,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:37:07,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 20:37:07,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:37:07,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 20:37:07,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-08-26 20:37:07,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 602 [2023-08-26 20:37:07,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 256 transitions, 3165 flow. Second operand has 15 states, 15 states have (on average 220.53333333333333) internal successors, (3308), 15 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states 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 20:37:07,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:37:07,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 602 [2023-08-26 20:37:07,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:37:17,346 INFO L124 PetriNetUnfolderBase]: 35095/60828 cut-off events. [2023-08-26 20:37:17,347 INFO L125 PetriNetUnfolderBase]: For 105367/105391 co-relation queries the response was YES. [2023-08-26 20:37:18,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193782 conditions, 60828 events. 35095/60828 cut-off events. For 105367/105391 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 497403 event pairs, 15369 based on Foata normal form. 126/54629 useless extension candidates. Maximal degree in co-relation 193709. Up to 43361 conditions per place. [2023-08-26 20:37:18,233 INFO L140 encePairwiseOnDemand]: 584/602 looper letters, 312 selfloop transitions, 121 changer transitions 0/440 dead transitions. [2023-08-26 20:37:18,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 440 transitions, 4915 flow [2023-08-26 20:37:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 20:37:18,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 20:37:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4164 transitions. [2023-08-26 20:37:18,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842746400885936 [2023-08-26 20:37:18,237 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4164 transitions. [2023-08-26 20:37:18,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4164 transitions. [2023-08-26 20:37:18,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:37:18,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4164 transitions. [2023-08-26 20:37:18,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 231.33333333333334) internal successors, (4164), 18 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:37:18,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 602.0) internal successors, (11438), 19 states have internal predecessors, (11438), 0 states have call successors, (0), 0 states 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 20:37:18,250 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 602.0) internal successors, (11438), 19 states have internal predecessors, (11438), 0 states have call successors, (0), 0 states 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 20:37:18,250 INFO L175 Difference]: Start difference. First operand has 266 places, 256 transitions, 3165 flow. Second operand 18 states and 4164 transitions. [2023-08-26 20:37:18,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 440 transitions, 4915 flow [2023-08-26 20:37:18,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 440 transitions, 4858 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-26 20:37:18,982 INFO L231 Difference]: Finished difference. Result has 278 places, 271 transitions, 3654 flow [2023-08-26 20:37:18,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=3108, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3654, PETRI_PLACES=278, PETRI_TRANSITIONS=271} [2023-08-26 20:37:18,983 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 197 predicate places. [2023-08-26 20:37:18,983 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 271 transitions, 3654 flow [2023-08-26 20:37:18,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 220.53333333333333) internal successors, (3308), 15 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states 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 20:37:18,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:37:18,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:37:18,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-26 20:37:18,984 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:37:18,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:37:18,984 INFO L85 PathProgramCache]: Analyzing trace with hash 652776398, now seen corresponding path program 3 times [2023-08-26 20:37:18,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:37:18,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459926603] [2023-08-26 20:37:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:37:18,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:37:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:37:20,055 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 20:37:20,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:37:20,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459926603] [2023-08-26 20:37:20,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459926603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:37:20,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:37:20,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-26 20:37:20,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053081159] [2023-08-26 20:37:20,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:37:20,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 20:37:20,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:37:20,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 20:37:20,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-08-26 20:37:20,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 602 [2023-08-26 20:37:20,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 271 transitions, 3654 flow. Second operand has 15 states, 15 states have (on average 220.53333333333333) internal successors, (3308), 15 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states 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 20:37:20,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:37:20,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 602 [2023-08-26 20:37:20,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:37:30,961 INFO L124 PetriNetUnfolderBase]: 40109/69034 cut-off events. [2023-08-26 20:37:30,961 INFO L125 PetriNetUnfolderBase]: For 143021/143025 co-relation queries the response was YES. [2023-08-26 20:37:31,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227079 conditions, 69034 events. 40109/69034 cut-off events. For 143021/143025 co-relation queries the response was YES. Maximal size of possible extension queue 1356. Compared 571108 event pairs, 10753 based on Foata normal form. 137/62187 useless extension candidates. Maximal degree in co-relation 227001. Up to 42326 conditions per place. [2023-08-26 20:37:32,041 INFO L140 encePairwiseOnDemand]: 582/602 looper letters, 325 selfloop transitions, 151 changer transitions 0/483 dead transitions. [2023-08-26 20:37:32,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 483 transitions, 5668 flow [2023-08-26 20:37:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-26 20:37:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-26 20:37:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4399 transitions. [2023-08-26 20:37:32,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3845952089526141 [2023-08-26 20:37:32,044 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4399 transitions. [2023-08-26 20:37:32,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4399 transitions. [2023-08-26 20:37:32,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:37:32,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4399 transitions. [2023-08-26 20:37:32,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 231.52631578947367) internal successors, (4399), 19 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states 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 20:37:32,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 602.0) internal successors, (12040), 20 states have internal predecessors, (12040), 0 states have call successors, (0), 0 states 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 20:37:32,053 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 602.0) internal successors, (12040), 20 states have internal predecessors, (12040), 0 states have call successors, (0), 0 states 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 20:37:32,053 INFO L175 Difference]: Start difference. First operand has 278 places, 271 transitions, 3654 flow. Second operand 19 states and 4399 transitions. [2023-08-26 20:37:32,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 483 transitions, 5668 flow [2023-08-26 20:37:33,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 483 transitions, 5538 flow, removed 21 selfloop flow, removed 12 redundant places. [2023-08-26 20:37:33,022 INFO L231 Difference]: Finished difference. Result has 288 places, 296 transitions, 4278 flow [2023-08-26 20:37:33,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=3536, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4278, PETRI_PLACES=288, PETRI_TRANSITIONS=296} [2023-08-26 20:37:33,022 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 207 predicate places. [2023-08-26 20:37:33,022 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 296 transitions, 4278 flow [2023-08-26 20:37:33,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 220.53333333333333) internal successors, (3308), 15 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states 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 20:37:33,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:37:33,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:37:33,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-26 20:37:33,023 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:37:33,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:37:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 652776397, now seen corresponding path program 1 times [2023-08-26 20:37:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:37:33,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944746239] [2023-08-26 20:37:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:37:33,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:37:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:37:34,214 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 20:37:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:37:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944746239] [2023-08-26 20:37:34,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944746239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:37:34,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:37:34,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-26 20:37:34,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884417875] [2023-08-26 20:37:34,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:37:34,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 20:37:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:37:34,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 20:37:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-08-26 20:37:34,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 602 [2023-08-26 20:37:34,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 296 transitions, 4278 flow. Second operand has 15 states, 15 states have (on average 218.53333333333333) internal successors, (3278), 15 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states 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 20:37:34,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:37:34,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 602 [2023-08-26 20:37:34,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:37:45,833 INFO L124 PetriNetUnfolderBase]: 39920/69078 cut-off events. [2023-08-26 20:37:45,833 INFO L125 PetriNetUnfolderBase]: For 182768/182796 co-relation queries the response was YES. [2023-08-26 20:37:46,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235957 conditions, 69078 events. 39920/69078 cut-off events. For 182768/182796 co-relation queries the response was YES. Maximal size of possible extension queue 1379. Compared 575212 event pairs, 17998 based on Foata normal form. 26/62080 useless extension candidates. Maximal degree in co-relation 235874. Up to 56224 conditions per place. [2023-08-26 20:37:46,963 INFO L140 encePairwiseOnDemand]: 585/602 looper letters, 327 selfloop transitions, 93 changer transitions 3/430 dead transitions. [2023-08-26 20:37:46,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 430 transitions, 5853 flow [2023-08-26 20:37:46,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 20:37:46,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 20:37:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3647 transitions. [2023-08-26 20:37:46,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37863372093023256 [2023-08-26 20:37:46,967 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3647 transitions. [2023-08-26 20:37:46,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3647 transitions. [2023-08-26 20:37:46,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:37:46,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3647 transitions. [2023-08-26 20:37:46,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 227.9375) internal successors, (3647), 16 states have internal predecessors, (3647), 0 states have call successors, (0), 0 states 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 20:37:46,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 602.0) internal successors, (10234), 17 states have internal predecessors, (10234), 0 states have call successors, (0), 0 states 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 20:37:46,974 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 602.0) internal successors, (10234), 17 states have internal predecessors, (10234), 0 states have call successors, (0), 0 states 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 20:37:46,974 INFO L175 Difference]: Start difference. First operand has 288 places, 296 transitions, 4278 flow. Second operand 16 states and 3647 transitions. [2023-08-26 20:37:46,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 430 transitions, 5853 flow [2023-08-26 20:37:47,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 430 transitions, 5743 flow, removed 9 selfloop flow, removed 13 redundant places. [2023-08-26 20:37:47,998 INFO L231 Difference]: Finished difference. Result has 291 places, 306 transitions, 4560 flow [2023-08-26 20:37:47,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4560, PETRI_PLACES=291, PETRI_TRANSITIONS=306} [2023-08-26 20:37:47,998 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 210 predicate places. [2023-08-26 20:37:47,998 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 306 transitions, 4560 flow [2023-08-26 20:37:47,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 218.53333333333333) internal successors, (3278), 15 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states 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 20:37:47,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:37:47,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:37:47,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-26 20:37:47,999 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:37:47,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:37:47,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1797257526, now seen corresponding path program 4 times [2023-08-26 20:37:47,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:37:47,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596538009] [2023-08-26 20:37:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:37:47,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:37:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:37:49,219 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 20:37:49,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:37:49,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596538009] [2023-08-26 20:37:49,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596538009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:37:49,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:37:49,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-26 20:37:49,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605564249] [2023-08-26 20:37:49,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:37:49,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 20:37:49,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:37:49,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 20:37:49,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-08-26 20:37:49,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 602 [2023-08-26 20:37:49,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 306 transitions, 4560 flow. Second operand has 15 states, 15 states have (on average 218.53333333333333) internal successors, (3278), 15 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states 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 20:37:49,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:37:49,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 602 [2023-08-26 20:37:49,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:38:00,683 INFO L124 PetriNetUnfolderBase]: 39869/69227 cut-off events. [2023-08-26 20:38:00,683 INFO L125 PetriNetUnfolderBase]: For 188804/188828 co-relation queries the response was YES. [2023-08-26 20:38:01,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237180 conditions, 69227 events. 39869/69227 cut-off events. For 188804/188828 co-relation queries the response was YES. Maximal size of possible extension queue 1376. Compared 578053 event pairs, 15773 based on Foata normal form. 52/62362 useless extension candidates. Maximal degree in co-relation 237095. Up to 54887 conditions per place. [2023-08-26 20:38:02,142 INFO L140 encePairwiseOnDemand]: 586/602 looper letters, 326 selfloop transitions, 92 changer transitions 3/428 dead transitions. [2023-08-26 20:38:02,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 428 transitions, 5977 flow [2023-08-26 20:38:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 20:38:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 20:38:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3422 transitions. [2023-08-26 20:38:02,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37895902547065335 [2023-08-26 20:38:02,145 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3422 transitions. [2023-08-26 20:38:02,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3422 transitions. [2023-08-26 20:38:02,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:38:02,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3422 transitions. [2023-08-26 20:38:02,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 228.13333333333333) internal successors, (3422), 15 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states 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 20:38:02,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 602.0) internal successors, (9632), 16 states have internal predecessors, (9632), 0 states have call successors, (0), 0 states 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 20:38:02,152 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 602.0) internal successors, (9632), 16 states have internal predecessors, (9632), 0 states have call successors, (0), 0 states 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 20:38:02,152 INFO L175 Difference]: Start difference. First operand has 291 places, 306 transitions, 4560 flow. Second operand 15 states and 3422 transitions. [2023-08-26 20:38:02,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 428 transitions, 5977 flow [2023-08-26 20:38:03,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 428 transitions, 5810 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-08-26 20:38:03,224 INFO L231 Difference]: Finished difference. Result has 292 places, 309 transitions, 4631 flow [2023-08-26 20:38:03,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=4393, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4631, PETRI_PLACES=292, PETRI_TRANSITIONS=309} [2023-08-26 20:38:03,224 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 211 predicate places. [2023-08-26 20:38:03,224 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 309 transitions, 4631 flow [2023-08-26 20:38:03,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 218.53333333333333) internal successors, (3278), 15 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states 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 20:38:03,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:38:03,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:38:03,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-26 20:38:03,225 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:38:03,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:38:03,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1797257525, now seen corresponding path program 2 times [2023-08-26 20:38:03,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:38:03,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325044723] [2023-08-26 20:38:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:38:03,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:38:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:38:03,747 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 20:38:03,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:38:03,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325044723] [2023-08-26 20:38:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325044723] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:38:03,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:38:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-26 20:38:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950794760] [2023-08-26 20:38:03,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:38:03,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 20:38:03,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:38:03,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 20:38:03,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-26 20:38:03,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 602 [2023-08-26 20:38:03,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 309 transitions, 4631 flow. Second operand has 13 states, 13 states have (on average 222.76923076923077) internal successors, (2896), 13 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states 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 20:38:03,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:38:03,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 602 [2023-08-26 20:38:03,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:38:22,471 INFO L124 PetriNetUnfolderBase]: 65004/112943 cut-off events. [2023-08-26 20:38:22,471 INFO L125 PetriNetUnfolderBase]: For 264402/264402 co-relation queries the response was YES. [2023-08-26 20:38:24,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373461 conditions, 112943 events. 65004/112943 cut-off events. For 264402/264402 co-relation queries the response was YES. Maximal size of possible extension queue 1862. Compared 1003664 event pairs, 19027 based on Foata normal form. 445/100862 useless extension candidates. Maximal degree in co-relation 373375. Up to 36761 conditions per place. [2023-08-26 20:38:24,933 INFO L140 encePairwiseOnDemand]: 586/602 looper letters, 477 selfloop transitions, 155 changer transitions 0/639 dead transitions. [2023-08-26 20:38:24,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 639 transitions, 7568 flow [2023-08-26 20:38:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 20:38:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 20:38:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3193 transitions. [2023-08-26 20:38:24,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40799897776641963 [2023-08-26 20:38:24,937 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3193 transitions. [2023-08-26 20:38:24,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3193 transitions. [2023-08-26 20:38:24,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:38:24,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3193 transitions. [2023-08-26 20:38:24,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 245.6153846153846) internal successors, (3193), 13 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states 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 20:38:24,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 602.0) internal successors, (8428), 14 states have internal predecessors, (8428), 0 states have call successors, (0), 0 states 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 20:38:24,945 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 602.0) internal successors, (8428), 14 states have internal predecessors, (8428), 0 states have call successors, (0), 0 states 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 20:38:24,945 INFO L175 Difference]: Start difference. First operand has 292 places, 309 transitions, 4631 flow. Second operand 13 states and 3193 transitions. [2023-08-26 20:38:24,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 639 transitions, 7568 flow [2023-08-26 20:38:26,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 639 transitions, 7405 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-08-26 20:38:26,667 INFO L231 Difference]: Finished difference. Result has 296 places, 356 transitions, 5450 flow [2023-08-26 20:38:26,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=4468, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5450, PETRI_PLACES=296, PETRI_TRANSITIONS=356} [2023-08-26 20:38:26,668 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 215 predicate places. [2023-08-26 20:38:26,668 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 356 transitions, 5450 flow [2023-08-26 20:38:26,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 222.76923076923077) internal successors, (2896), 13 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states 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 20:38:26,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:38:26,669 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:38:26,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-26 20:38:26,669 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:38:26,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:38:26,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1117661153, now seen corresponding path program 1 times [2023-08-26 20:38:26,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:38:26,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569265740] [2023-08-26 20:38:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:38:26,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:38:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:38:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 20:38:26,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:38:26,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569265740] [2023-08-26 20:38:26,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569265740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:38:26,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:38:26,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:38:26,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537078324] [2023-08-26 20:38:26,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:38:26,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:38:26,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:38:26,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:38:26,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:38:26,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 602 [2023-08-26 20:38:26,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 356 transitions, 5450 flow. Second operand has 3 states, 3 states have (on average 301.0) internal successors, (903), 3 states have internal predecessors, (903), 0 states have call successors, (0), 0 states 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 20:38:26,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:38:26,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 602 [2023-08-26 20:38:26,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:38:31,804 INFO L124 PetriNetUnfolderBase]: 18092/31941 cut-off events. [2023-08-26 20:38:31,804 INFO L125 PetriNetUnfolderBase]: For 134212/134283 co-relation queries the response was YES. [2023-08-26 20:38:32,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113902 conditions, 31941 events. 18092/31941 cut-off events. For 134212/134283 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 230804 event pairs, 9981 based on Foata normal form. 1258/30906 useless extension candidates. Maximal degree in co-relation 113811. Up to 16750 conditions per place. [2023-08-26 20:38:32,316 INFO L140 encePairwiseOnDemand]: 599/602 looper letters, 243 selfloop transitions, 2 changer transitions 2/266 dead transitions. [2023-08-26 20:38:32,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 266 transitions, 4322 flow [2023-08-26 20:38:32,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:38:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:38:32,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-08-26 20:38:32,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5249169435215947 [2023-08-26 20:38:32,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-08-26 20:38:32,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-08-26 20:38:32,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:38:32,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-08-26 20:38:32,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 20:38:32,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:38:32,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:38:32,320 INFO L175 Difference]: Start difference. First operand has 296 places, 356 transitions, 5450 flow. Second operand 3 states and 948 transitions. [2023-08-26 20:38:32,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 266 transitions, 4322 flow [2023-08-26 20:38:33,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 266 transitions, 4044 flow, removed 52 selfloop flow, removed 12 redundant places. [2023-08-26 20:38:33,304 INFO L231 Difference]: Finished difference. Result has 287 places, 248 transitions, 3498 flow [2023-08-26 20:38:33,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=3460, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3498, PETRI_PLACES=287, PETRI_TRANSITIONS=248} [2023-08-26 20:38:33,305 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 206 predicate places. [2023-08-26 20:38:33,305 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 248 transitions, 3498 flow [2023-08-26 20:38:33,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.0) internal successors, (903), 3 states have internal predecessors, (903), 0 states have call successors, (0), 0 states 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 20:38:33,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:38:33,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:38:33,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-26 20:38:33,306 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:38:33,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:38:33,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1002901979, now seen corresponding path program 1 times [2023-08-26 20:38:33,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:38:33,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025811104] [2023-08-26 20:38:33,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:38:33,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:38:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:38:33,355 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 20:38:33,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:38:33,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025811104] [2023-08-26 20:38:33,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025811104] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:38:33,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:38:33,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 20:38:33,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274394192] [2023-08-26 20:38:33,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:38:33,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 20:38:33,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:38:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 20:38:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 20:38:33,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 602 [2023-08-26 20:38:33,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 248 transitions, 3498 flow. Second operand has 3 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 20:38:33,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:38:33,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 602 [2023-08-26 20:38:33,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:38:37,171 INFO L124 PetriNetUnfolderBase]: 13990/26255 cut-off events. [2023-08-26 20:38:37,172 INFO L125 PetriNetUnfolderBase]: For 83344/83359 co-relation queries the response was YES. [2023-08-26 20:38:37,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91053 conditions, 26255 events. 13990/26255 cut-off events. For 83344/83359 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 190587 event pairs, 3022 based on Foata normal form. 2191/26862 useless extension candidates. Maximal degree in co-relation 90966. Up to 19004 conditions per place. [2023-08-26 20:38:37,485 INFO L140 encePairwiseOnDemand]: 596/602 looper letters, 234 selfloop transitions, 9 changer transitions 0/262 dead transitions. [2023-08-26 20:38:37,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 262 transitions, 4090 flow [2023-08-26 20:38:37,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 20:38:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 20:38:37,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 925 transitions. [2023-08-26 20:38:37,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121816168327796 [2023-08-26 20:38:37,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 925 transitions. [2023-08-26 20:38:37,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 925 transitions. [2023-08-26 20:38:37,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:38:37,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 925 transitions. [2023-08-26 20:38:37,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states 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 20:38:37,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:38:37,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:38:37,489 INFO L175 Difference]: Start difference. First operand has 287 places, 248 transitions, 3498 flow. Second operand 3 states and 925 transitions. [2023-08-26 20:38:37,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 262 transitions, 4090 flow [2023-08-26 20:38:37,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 262 transitions, 4062 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-26 20:38:37,998 INFO L231 Difference]: Finished difference. Result has 285 places, 248 transitions, 3488 flow [2023-08-26 20:38:37,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3488, PETRI_PLACES=285, PETRI_TRANSITIONS=248} [2023-08-26 20:38:37,999 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 204 predicate places. [2023-08-26 20:38:37,999 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 248 transitions, 3488 flow [2023-08-26 20:38:37,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 20:38:37,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:38:37,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:38:37,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-26 20:38:38,000 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:38:38,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:38:38,000 INFO L85 PathProgramCache]: Analyzing trace with hash -508263633, now seen corresponding path program 1 times [2023-08-26 20:38:38,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:38:38,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901275075] [2023-08-26 20:38:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:38:38,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:38:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:38:39,419 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 20:38:39,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:38:39,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901275075] [2023-08-26 20:38:39,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901275075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:38:39,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:38:39,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-26 20:38:39,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134458600] [2023-08-26 20:38:39,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:38:39,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 20:38:39,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:38:39,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 20:38:39,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-26 20:38:39,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 602 [2023-08-26 20:38:39,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 248 transitions, 3488 flow. Second operand has 16 states, 16 states have (on average 212.9375) internal successors, (3407), 16 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states 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 20:38:39,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:38:39,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 602 [2023-08-26 20:38:39,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:38:43,837 INFO L124 PetriNetUnfolderBase]: 11854/22575 cut-off events. [2023-08-26 20:38:43,837 INFO L125 PetriNetUnfolderBase]: For 79864/79966 co-relation queries the response was YES. [2023-08-26 20:38:44,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81729 conditions, 22575 events. 11854/22575 cut-off events. For 79864/79966 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 161026 event pairs, 7791 based on Foata normal form. 120/21263 useless extension candidates. Maximal degree in co-relation 81643. Up to 18013 conditions per place. [2023-08-26 20:38:44,108 INFO L140 encePairwiseOnDemand]: 584/602 looper letters, 288 selfloop transitions, 69 changer transitions 3/366 dead transitions. [2023-08-26 20:38:44,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 366 transitions, 4733 flow [2023-08-26 20:38:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 20:38:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 20:38:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5050 transitions. [2023-08-26 20:38:44,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36472627473638597 [2023-08-26 20:38:44,113 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5050 transitions. [2023-08-26 20:38:44,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5050 transitions. [2023-08-26 20:38:44,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:38:44,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5050 transitions. [2023-08-26 20:38:44,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 219.56521739130434) internal successors, (5050), 23 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states 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 20:38:44,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 602.0) internal successors, (14448), 24 states have internal predecessors, (14448), 0 states have call successors, (0), 0 states 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 20:38:44,124 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 602.0) internal successors, (14448), 24 states have internal predecessors, (14448), 0 states have call successors, (0), 0 states 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 20:38:44,124 INFO L175 Difference]: Start difference. First operand has 285 places, 248 transitions, 3488 flow. Second operand 23 states and 5050 transitions. [2023-08-26 20:38:44,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 366 transitions, 4733 flow [2023-08-26 20:38:44,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 366 transitions, 4659 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-26 20:38:44,570 INFO L231 Difference]: Finished difference. Result has 307 places, 245 transitions, 3510 flow [2023-08-26 20:38:44,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3510, PETRI_PLACES=307, PETRI_TRANSITIONS=245} [2023-08-26 20:38:44,571 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 226 predicate places. [2023-08-26 20:38:44,571 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 245 transitions, 3510 flow [2023-08-26 20:38:44,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 212.9375) internal successors, (3407), 16 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states 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 20:38:44,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:38:44,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:38:44,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-26 20:38:44,572 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:38:44,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:38:44,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1509893943, now seen corresponding path program 2 times [2023-08-26 20:38:44,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:38:44,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601630292] [2023-08-26 20:38:44,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:38:44,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:38:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:38:45,422 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 20:38:45,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:38:45,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601630292] [2023-08-26 20:38:45,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601630292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:38:45,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:38:45,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-26 20:38:45,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174725195] [2023-08-26 20:38:45,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:38:45,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 20:38:45,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:38:45,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 20:38:45,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-26 20:38:45,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 602 [2023-08-26 20:38:45,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 245 transitions, 3510 flow. Second operand has 16 states, 16 states have (on average 212.9375) internal successors, (3407), 16 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states 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 20:38:45,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:38:45,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 602 [2023-08-26 20:38:45,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:38:48,794 INFO L124 PetriNetUnfolderBase]: 9605/18349 cut-off events. [2023-08-26 20:38:48,794 INFO L125 PetriNetUnfolderBase]: For 69955/70009 co-relation queries the response was YES. [2023-08-26 20:38:48,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68692 conditions, 18349 events. 9605/18349 cut-off events. For 69955/70009 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 124927 event pairs, 3261 based on Foata normal form. 96/17396 useless extension candidates. Maximal degree in co-relation 68604. Up to 10233 conditions per place. [2023-08-26 20:38:49,010 INFO L140 encePairwiseOnDemand]: 582/602 looper letters, 233 selfloop transitions, 97 changer transitions 4/340 dead transitions. [2023-08-26 20:38:49,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 340 transitions, 4547 flow [2023-08-26 20:38:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 20:38:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 20:38:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3763 transitions. [2023-08-26 20:38:49,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36769591557553255 [2023-08-26 20:38:49,013 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3763 transitions. [2023-08-26 20:38:49,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3763 transitions. [2023-08-26 20:38:49,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:38:49,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3763 transitions. [2023-08-26 20:38:49,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 221.35294117647058) internal successors, (3763), 17 states have internal predecessors, (3763), 0 states have call successors, (0), 0 states 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 20:38:49,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 602.0) internal successors, (10836), 18 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states 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 20:38:49,023 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 602.0) internal successors, (10836), 18 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states 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 20:38:49,023 INFO L175 Difference]: Start difference. First operand has 307 places, 245 transitions, 3510 flow. Second operand 17 states and 3763 transitions. [2023-08-26 20:38:49,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 340 transitions, 4547 flow [2023-08-26 20:38:49,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 340 transitions, 4264 flow, removed 17 selfloop flow, removed 28 redundant places. [2023-08-26 20:38:49,491 INFO L231 Difference]: Finished difference. Result has 297 places, 235 transitions, 3334 flow [2023-08-26 20:38:49,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=3085, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3334, PETRI_PLACES=297, PETRI_TRANSITIONS=235} [2023-08-26 20:38:49,491 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 216 predicate places. [2023-08-26 20:38:49,491 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 235 transitions, 3334 flow [2023-08-26 20:38:49,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 212.9375) internal successors, (3407), 16 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states 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 20:38:49,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:38:49,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:38:49,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-26 20:38:49,492 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:38:49,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:38:49,492 INFO L85 PathProgramCache]: Analyzing trace with hash -65059725, now seen corresponding path program 3 times [2023-08-26 20:38:49,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:38:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20135157] [2023-08-26 20:38:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:38:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:38:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:38:50,645 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 20:38:50,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:38:50,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20135157] [2023-08-26 20:38:50,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20135157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:38:50,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:38:50,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-26 20:38:50,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379744918] [2023-08-26 20:38:50,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:38:50,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 20:38:50,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:38:50,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 20:38:50,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-08-26 20:38:50,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 602 [2023-08-26 20:38:50,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 235 transitions, 3334 flow. Second operand has 16 states, 16 states have (on average 212.9375) internal successors, (3407), 16 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states 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 20:38:50,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:38:50,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 602 [2023-08-26 20:38:50,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:38:53,808 INFO L124 PetriNetUnfolderBase]: 7584/14522 cut-off events. [2023-08-26 20:38:53,808 INFO L125 PetriNetUnfolderBase]: For 64106/64154 co-relation queries the response was YES. [2023-08-26 20:38:53,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57951 conditions, 14522 events. 7584/14522 cut-off events. For 64106/64154 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 94487 event pairs, 2329 based on Foata normal form. 36/13857 useless extension candidates. Maximal degree in co-relation 57866. Up to 7111 conditions per place. [2023-08-26 20:38:53,937 INFO L140 encePairwiseOnDemand]: 586/602 looper letters, 215 selfloop transitions, 86 changer transitions 6/313 dead transitions. [2023-08-26 20:38:53,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 313 transitions, 4249 flow [2023-08-26 20:38:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 20:38:53,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 20:38:53,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3317 transitions. [2023-08-26 20:38:53,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3673311184939092 [2023-08-26 20:38:53,940 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3317 transitions. [2023-08-26 20:38:53,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3317 transitions. [2023-08-26 20:38:53,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:38:53,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3317 transitions. [2023-08-26 20:38:53,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 221.13333333333333) internal successors, (3317), 15 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states 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 20:38:53,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 602.0) internal successors, (9632), 16 states have internal predecessors, (9632), 0 states have call successors, (0), 0 states 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 20:38:53,946 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 602.0) internal successors, (9632), 16 states have internal predecessors, (9632), 0 states have call successors, (0), 0 states 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 20:38:53,946 INFO L175 Difference]: Start difference. First operand has 297 places, 235 transitions, 3334 flow. Second operand 15 states and 3317 transitions. [2023-08-26 20:38:53,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 313 transitions, 4249 flow [2023-08-26 20:38:54,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 313 transitions, 3902 flow, removed 12 selfloop flow, removed 24 redundant places. [2023-08-26 20:38:54,374 INFO L231 Difference]: Finished difference. Result has 289 places, 224 transitions, 3076 flow [2023-08-26 20:38:54,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3076, PETRI_PLACES=289, PETRI_TRANSITIONS=224} [2023-08-26 20:38:54,375 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 208 predicate places. [2023-08-26 20:38:54,375 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 224 transitions, 3076 flow [2023-08-26 20:38:54,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 212.9375) internal successors, (3407), 16 states have internal predecessors, (3407), 0 states have call successors, (0), 0 states 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 20:38:54,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:38:54,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:38:54,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-26 20:38:54,376 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:38:54,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:38:54,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1915517064, now seen corresponding path program 1 times [2023-08-26 20:38:54,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:38:54,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708853040] [2023-08-26 20:38:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:38:54,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:38:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:38:54,718 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 20:38:54,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:38:54,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708853040] [2023-08-26 20:38:54,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708853040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:38:54,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:38:54,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 20:38:54,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577387477] [2023-08-26 20:38:54,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:38:54,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 20:38:54,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:38:54,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 20:38:54,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-26 20:38:54,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 602 [2023-08-26 20:38:54,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 224 transitions, 3076 flow. Second operand has 10 states, 10 states have (on average 220.2) internal successors, (2202), 10 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states 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 20:38:54,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:38:54,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 602 [2023-08-26 20:38:54,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:38:57,056 INFO L124 PetriNetUnfolderBase]: 7499/14285 cut-off events. [2023-08-26 20:38:57,056 INFO L125 PetriNetUnfolderBase]: For 64152/64236 co-relation queries the response was YES. [2023-08-26 20:38:57,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56901 conditions, 14285 events. 7499/14285 cut-off events. For 64152/64236 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 92188 event pairs, 1507 based on Foata normal form. 28/13685 useless extension candidates. Maximal degree in co-relation 56819. Up to 3807 conditions per place. [2023-08-26 20:38:57,181 INFO L140 encePairwiseOnDemand]: 586/602 looper letters, 201 selfloop transitions, 99 changer transitions 1/307 dead transitions. [2023-08-26 20:38:57,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 307 transitions, 4058 flow [2023-08-26 20:38:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 20:38:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 20:38:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2753 transitions. [2023-08-26 20:38:57,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3810908084163898 [2023-08-26 20:38:57,184 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2753 transitions. [2023-08-26 20:38:57,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2753 transitions. [2023-08-26 20:38:57,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:38:57,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2753 transitions. [2023-08-26 20:38:57,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 229.41666666666666) internal successors, (2753), 12 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states 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 20:38:57,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 602.0) internal successors, (7826), 13 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states 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 20:38:57,190 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 602.0) internal successors, (7826), 13 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states 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 20:38:57,190 INFO L175 Difference]: Start difference. First operand has 289 places, 224 transitions, 3076 flow. Second operand 12 states and 2753 transitions. [2023-08-26 20:38:57,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 307 transitions, 4058 flow [2023-08-26 20:38:57,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 307 transitions, 3879 flow, removed 5 selfloop flow, removed 14 redundant places. [2023-08-26 20:38:57,574 INFO L231 Difference]: Finished difference. Result has 288 places, 227 transitions, 3189 flow [2023-08-26 20:38:57,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3189, PETRI_PLACES=288, PETRI_TRANSITIONS=227} [2023-08-26 20:38:57,574 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 207 predicate places. [2023-08-26 20:38:57,574 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 227 transitions, 3189 flow [2023-08-26 20:38:57,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 220.2) internal successors, (2202), 10 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states 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 20:38:57,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:38:57,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:38:57,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-26 20:38:57,575 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:38:57,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:38:57,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1915517065, now seen corresponding path program 1 times [2023-08-26 20:38:57,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:38:57,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152888169] [2023-08-26 20:38:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:38:57,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:38:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:38:58,192 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 20:38:58,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:38:58,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152888169] [2023-08-26 20:38:58,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152888169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:38:58,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:38:58,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-26 20:38:58,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541311084] [2023-08-26 20:38:58,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:38:58,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 20:38:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:38:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 20:38:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-26 20:38:58,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 602 [2023-08-26 20:38:58,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 227 transitions, 3189 flow. Second operand has 17 states, 17 states have (on average 212.88235294117646) internal successors, (3619), 17 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states 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 20:38:58,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:38:58,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 602 [2023-08-26 20:38:58,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:39:01,808 INFO L124 PetriNetUnfolderBase]: 7722/14757 cut-off events. [2023-08-26 20:39:01,808 INFO L125 PetriNetUnfolderBase]: For 61720/61768 co-relation queries the response was YES. [2023-08-26 20:39:01,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58757 conditions, 14757 events. 7722/14757 cut-off events. For 61720/61768 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 96493 event pairs, 1845 based on Foata normal form. 16/14243 useless extension candidates. Maximal degree in co-relation 58674. Up to 3484 conditions per place. [2023-08-26 20:39:01,963 INFO L140 encePairwiseOnDemand]: 582/602 looper letters, 388 selfloop transitions, 133 changer transitions 7/534 dead transitions. [2023-08-26 20:39:01,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 534 transitions, 5653 flow [2023-08-26 20:39:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-26 20:39:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-26 20:39:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7972 transitions. [2023-08-26 20:39:01,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3678479143595423 [2023-08-26 20:39:01,969 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7972 transitions. [2023-08-26 20:39:01,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7972 transitions. [2023-08-26 20:39:01,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:39:01,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7972 transitions. [2023-08-26 20:39:01,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 221.44444444444446) internal successors, (7972), 36 states have internal predecessors, (7972), 0 states have call successors, (0), 0 states 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 20:39:01,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 602.0) internal successors, (22274), 37 states have internal predecessors, (22274), 0 states have call successors, (0), 0 states 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 20:39:01,992 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 602.0) internal successors, (22274), 37 states have internal predecessors, (22274), 0 states have call successors, (0), 0 states 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 20:39:01,993 INFO L175 Difference]: Start difference. First operand has 288 places, 227 transitions, 3189 flow. Second operand 36 states and 7972 transitions. [2023-08-26 20:39:01,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 534 transitions, 5653 flow [2023-08-26 20:39:02,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 534 transitions, 5515 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-08-26 20:39:02,396 INFO L231 Difference]: Finished difference. Result has 319 places, 236 transitions, 3392 flow [2023-08-26 20:39:02,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3392, PETRI_PLACES=319, PETRI_TRANSITIONS=236} [2023-08-26 20:39:02,396 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 238 predicate places. [2023-08-26 20:39:02,397 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 236 transitions, 3392 flow [2023-08-26 20:39:02,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 212.88235294117646) internal successors, (3619), 17 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states 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 20:39:02,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:39:02,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:39:02,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-26 20:39:02,398 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:39:02,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:39:02,398 INFO L85 PathProgramCache]: Analyzing trace with hash 413066137, now seen corresponding path program 2 times [2023-08-26 20:39:02,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:39:02,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326067540] [2023-08-26 20:39:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:39:02,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:39:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:39:03,916 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 20:39:03,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:39:03,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326067540] [2023-08-26 20:39:03,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326067540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:39:03,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:39:03,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-08-26 20:39:03,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439847547] [2023-08-26 20:39:03,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:39:03,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 20:39:03,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:39:03,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 20:39:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-08-26 20:39:03,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 602 [2023-08-26 20:39:03,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 236 transitions, 3392 flow. Second operand has 21 states, 21 states have (on average 206.52380952380952) internal successors, (4337), 21 states have internal predecessors, (4337), 0 states have call successors, (0), 0 states 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 20:39:03,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:39:03,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 602 [2023-08-26 20:39:03,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:39:07,641 INFO L124 PetriNetUnfolderBase]: 8528/16362 cut-off events. [2023-08-26 20:39:07,642 INFO L125 PetriNetUnfolderBase]: For 63470/63530 co-relation queries the response was YES. [2023-08-26 20:39:07,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64111 conditions, 16362 events. 8528/16362 cut-off events. For 63470/63530 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 109946 event pairs, 3248 based on Foata normal form. 40/15775 useless extension candidates. Maximal degree in co-relation 64026. Up to 7547 conditions per place. [2023-08-26 20:39:07,856 INFO L140 encePairwiseOnDemand]: 581/602 looper letters, 286 selfloop transitions, 101 changer transitions 7/400 dead transitions. [2023-08-26 20:39:07,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 400 transitions, 4979 flow [2023-08-26 20:39:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 20:39:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 20:39:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4521 transitions. [2023-08-26 20:39:07,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35761746559088753 [2023-08-26 20:39:07,860 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4521 transitions. [2023-08-26 20:39:07,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4521 transitions. [2023-08-26 20:39:07,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:39:07,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4521 transitions. [2023-08-26 20:39:07,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 215.28571428571428) internal successors, (4521), 21 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:39:07,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 602.0) internal successors, (13244), 22 states have internal predecessors, (13244), 0 states have call successors, (0), 0 states 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 20:39:07,869 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 602.0) internal successors, (13244), 22 states have internal predecessors, (13244), 0 states have call successors, (0), 0 states 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 20:39:07,869 INFO L175 Difference]: Start difference. First operand has 319 places, 236 transitions, 3392 flow. Second operand 21 states and 4521 transitions. [2023-08-26 20:39:07,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 400 transitions, 4979 flow [2023-08-26 20:39:08,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 400 transitions, 4626 flow, removed 10 selfloop flow, removed 27 redundant places. [2023-08-26 20:39:08,536 INFO L231 Difference]: Finished difference. Result has 316 places, 243 transitions, 3376 flow [2023-08-26 20:39:08,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3376, PETRI_PLACES=316, PETRI_TRANSITIONS=243} [2023-08-26 20:39:08,537 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 235 predicate places. [2023-08-26 20:39:08,537 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 243 transitions, 3376 flow [2023-08-26 20:39:08,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 206.52380952380952) internal successors, (4337), 21 states have internal predecessors, (4337), 0 states have call successors, (0), 0 states 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 20:39:08,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:39:08,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:39:08,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-26 20:39:08,538 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:39:08,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:39:08,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1020558113, now seen corresponding path program 3 times [2023-08-26 20:39:08,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:39:08,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697737405] [2023-08-26 20:39:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:39:08,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:39:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:39:09,288 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 20:39:09,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:39:09,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697737405] [2023-08-26 20:39:09,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697737405] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:39:09,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:39:09,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-08-26 20:39:09,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218062268] [2023-08-26 20:39:09,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:39:09,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 20:39:09,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:39:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 20:39:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-08-26 20:39:09,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 602 [2023-08-26 20:39:09,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 243 transitions, 3376 flow. Second operand has 18 states, 18 states have (on average 209.77777777777777) internal successors, (3776), 18 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states 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 20:39:09,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:39:09,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 602 [2023-08-26 20:39:09,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:39:12,318 INFO L124 PetriNetUnfolderBase]: 8511/16279 cut-off events. [2023-08-26 20:39:12,318 INFO L125 PetriNetUnfolderBase]: For 63897/63975 co-relation queries the response was YES. [2023-08-26 20:39:12,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63560 conditions, 16279 events. 8511/16279 cut-off events. For 63897/63975 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 108709 event pairs, 1622 based on Foata normal form. 74/15710 useless extension candidates. Maximal degree in co-relation 63475. Up to 6436 conditions per place. [2023-08-26 20:39:12,539 INFO L140 encePairwiseOnDemand]: 584/602 looper letters, 181 selfloop transitions, 134 changer transitions 1/322 dead transitions. [2023-08-26 20:39:12,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 322 transitions, 4373 flow [2023-08-26 20:39:12,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 20:39:12,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 20:39:12,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3256 transitions. [2023-08-26 20:39:12,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605758582502769 [2023-08-26 20:39:12,541 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3256 transitions. [2023-08-26 20:39:12,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3256 transitions. [2023-08-26 20:39:12,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:39:12,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3256 transitions. [2023-08-26 20:39:12,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 217.06666666666666) internal successors, (3256), 15 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states 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 20:39:12,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 602.0) internal successors, (9632), 16 states have internal predecessors, (9632), 0 states have call successors, (0), 0 states 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 20:39:12,548 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 602.0) internal successors, (9632), 16 states have internal predecessors, (9632), 0 states have call successors, (0), 0 states 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 20:39:12,548 INFO L175 Difference]: Start difference. First operand has 316 places, 243 transitions, 3376 flow. Second operand 15 states and 3256 transitions. [2023-08-26 20:39:12,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 322 transitions, 4373 flow [2023-08-26 20:39:12,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 322 transitions, 4185 flow, removed 1 selfloop flow, removed 17 redundant places. [2023-08-26 20:39:12,971 INFO L231 Difference]: Finished difference. Result has 312 places, 242 transitions, 3446 flow [2023-08-26 20:39:12,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=3178, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3446, PETRI_PLACES=312, PETRI_TRANSITIONS=242} [2023-08-26 20:39:12,971 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 231 predicate places. [2023-08-26 20:39:12,971 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 242 transitions, 3446 flow [2023-08-26 20:39:12,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 209.77777777777777) internal successors, (3776), 18 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states 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 20:39:12,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:39:12,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:39:12,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-26 20:39:12,972 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:39:12,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:39:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1281837050, now seen corresponding path program 2 times [2023-08-26 20:39:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:39:12,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210590596] [2023-08-26 20:39:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:39:12,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:39:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 20:39:13,538 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 20:39:13,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 20:39:13,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210590596] [2023-08-26 20:39:13,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210590596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 20:39:13,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 20:39:13,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-26 20:39:13,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270867262] [2023-08-26 20:39:13,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 20:39:13,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 20:39:13,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 20:39:13,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 20:39:13,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-26 20:39:13,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 602 [2023-08-26 20:39:13,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 242 transitions, 3446 flow. Second operand has 11 states, 11 states have (on average 215.9090909090909) internal successors, (2375), 11 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states 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 20:39:13,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 20:39:13,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 602 [2023-08-26 20:39:13,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 20:39:16,104 INFO L124 PetriNetUnfolderBase]: 8478/16216 cut-off events. [2023-08-26 20:39:16,104 INFO L125 PetriNetUnfolderBase]: For 66801/66879 co-relation queries the response was YES. [2023-08-26 20:39:16,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64559 conditions, 16216 events. 8478/16216 cut-off events. For 66801/66879 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 108101 event pairs, 1968 based on Foata normal form. 46/15619 useless extension candidates. Maximal degree in co-relation 64477. Up to 6663 conditions per place. [2023-08-26 20:39:16,222 INFO L140 encePairwiseOnDemand]: 589/602 looper letters, 176 selfloop transitions, 99 changer transitions 2/283 dead transitions. [2023-08-26 20:39:16,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 283 transitions, 4191 flow [2023-08-26 20:39:16,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 20:39:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 20:39:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2014 transitions. [2023-08-26 20:39:16,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37172388335179035 [2023-08-26 20:39:16,224 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2014 transitions. [2023-08-26 20:39:16,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2014 transitions. [2023-08-26 20:39:16,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 20:39:16,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2014 transitions. [2023-08-26 20:39:16,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 223.77777777777777) internal successors, (2014), 9 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states 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 20:39:16,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 602.0) internal successors, (6020), 10 states have internal predecessors, (6020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:39:16,227 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 602.0) internal successors, (6020), 10 states have internal predecessors, (6020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 20:39:16,227 INFO L175 Difference]: Start difference. First operand has 312 places, 242 transitions, 3446 flow. Second operand 9 states and 2014 transitions. [2023-08-26 20:39:16,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 283 transitions, 4191 flow [2023-08-26 20:39:16,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 283 transitions, 4014 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-08-26 20:39:16,668 INFO L231 Difference]: Finished difference. Result has 305 places, 241 transitions, 3461 flow [2023-08-26 20:39:16,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=3263, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3461, PETRI_PLACES=305, PETRI_TRANSITIONS=241} [2023-08-26 20:39:16,669 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 224 predicate places. [2023-08-26 20:39:16,669 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 241 transitions, 3461 flow [2023-08-26 20:39:16,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 215.9090909090909) internal successors, (2375), 11 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states 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 20:39:16,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 20:39:16,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 20:39:16,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-26 20:39:16,670 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 40 more)] === [2023-08-26 20:39:16,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 20:39:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1636808666, now seen corresponding path program 1 times [2023-08-26 20:39:16,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 20:39:16,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101868446] [2023-08-26 20:39:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 20:39:16,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 20:39:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-08-26 20:47:58,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-26 20:47:58,541 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-08-26 20:47:58,544 INFO L158 Benchmark]: Toolchain (without parser) took 766096.87ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 324.5MB in the beginning and 12.3GB in the end (delta: -12.0GB). Peak memory consumption was 11.3GB. Max. memory is 16.0GB. [2023-08-26 20:47:58,544 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 326.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 20:47:58,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.65ms. Allocated memory is still 350.2MB. Free memory was 324.5MB in the beginning and 294.2MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-26 20:47:58,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.60ms. Allocated memory is still 350.2MB. Free memory was 294.2MB in the beginning and 291.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 20:47:58,545 INFO L158 Benchmark]: Boogie Preprocessor took 53.65ms. Allocated memory is still 350.2MB. Free memory was 291.0MB in the beginning and 288.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 20:47:58,545 INFO L158 Benchmark]: RCFGBuilder took 574.22ms. Allocated memory is still 350.2MB. Free memory was 288.4MB in the beginning and 315.1MB in the end (delta: -26.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 20:47:58,545 INFO L158 Benchmark]: TraceAbstraction took 764751.07ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 314.1MB in the beginning and 12.3GB in the end (delta: -12.0GB). Peak memory consumption was 11.3GB. Max. memory is 16.0GB. [2023-08-26 20:47:58,546 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 20:47:58,547 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 326.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 640.65ms. Allocated memory is still 350.2MB. Free memory was 324.5MB in the beginning and 294.2MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 72.60ms. Allocated memory is still 350.2MB. Free memory was 294.2MB in the beginning and 291.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 53.65ms. Allocated memory is still 350.2MB. Free memory was 291.0MB in the beginning and 288.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 574.22ms. Allocated memory is still 350.2MB. Free memory was 288.4MB in the beginning and 315.1MB in the end (delta: -26.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 764751.07ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 314.1MB in the beginning and 12.3GB in the end (delta: -12.0GB). Peak memory consumption was 11.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 258]: Unsoundness Warning unspecified type, defaulting to int C: short [258] - GenericResultAtLocation [Line: 258]: Unsoundness Warning unspecified type, defaulting to int C: short [258] - GenericResultAtLocation [Line: 750]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [750] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.8s, 292 PlacesBefore, 81 PlacesAfterwards, 303 TransitionsBefore, 85 TransitionsAfterwards, 24328 CoEnabledTransitionPairs, 9 FixpointIterations, 73 TrivialSequentialCompositions, 176 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 26 ConcurrentYvCompositions, 7 ChoiceCompositions, 288 TotalNumberOfCompositions, 59335 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25779, independent: 24830, independent conditional: 0, independent unconditional: 24830, dependent: 949, dependent conditional: 0, dependent unconditional: 949, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 13272, independent: 13144, independent conditional: 0, independent unconditional: 13144, dependent: 128, dependent conditional: 0, dependent unconditional: 128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25779, independent: 11686, independent conditional: 0, independent unconditional: 11686, dependent: 821, dependent conditional: 0, dependent unconditional: 821, unknown: 13272, unknown conditional: 0, unknown unconditional: 13272] , Statistics on independence cache: Total cache size (in pairs): 550, Positive cache size: 492, Positive conditional cache size: 0, Positive unconditional cache size: 492, Negative cache size: 58, Negative conditional cache size: 0, Negative unconditional cache size: 58, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown