/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-complex/safestack_relacy.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:35:13,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:35:13,513 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 21:35:13,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:35:13,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:35:13,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:35:13,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:35:13,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:35:13,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:35:13,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:35:13,561 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:35:13,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:35:13,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:35:13,563 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:35:13,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:35:13,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:35:13,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:35:13,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:35:13,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:35:13,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:35:13,564 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:35:13,565 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:35:13,565 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:35:13,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:35:13,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:35:13,566 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:35:13,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:35:13,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:35:13,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:35:13,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:35:13,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:35:13,568 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:35:13,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:35:13,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:35:13,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:35:13,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:35:13,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:35:13,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:35:13,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:35:13,885 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:35:13,885 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:35:13,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2023-08-26 21:35:15,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:35:15,488 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:35:15,489 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2023-08-26 21:35:15,513 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324ae5c8f/29f60f1401b747f3b8c44a010f89810e/FLAG5cd6c4357 [2023-08-26 21:35:15,528 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324ae5c8f/29f60f1401b747f3b8c44a010f89810e [2023-08-26 21:35:15,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:35:15,534 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:35:15,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:35:15,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:35:15,539 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:35:15,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:35:15" (1/1) ... [2023-08-26 21:35:15,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7008ebb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:15, skipping insertion in model container [2023-08-26 21:35:15,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:35:15" (1/1) ... [2023-08-26 21:35:15,617 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:35:16,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:35:16,184 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:35:16,196 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [127] [2023-08-26 21:35:16,206 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [573] [2023-08-26 21:35:16,206 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [574] [2023-08-26 21:35:16,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:35:16,328 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:35:16,328 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:35:16,333 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:35:16,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16 WrapperNode [2023-08-26 21:35:16,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:35:16,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:35:16,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:35:16,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:35:16,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (1/1) ... [2023-08-26 21:35:16,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (1/1) ... [2023-08-26 21:35:16,403 INFO L138 Inliner]: procedures = 481, calls = 75, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 305 [2023-08-26 21:35:16,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:35:16,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:35:16,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:35:16,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:35:16,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (1/1) ... [2023-08-26 21:35:16,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (1/1) ... [2023-08-26 21:35:16,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (1/1) ... [2023-08-26 21:35:16,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (1/1) ... [2023-08-26 21:35:16,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (1/1) ... [2023-08-26 21:35:16,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (1/1) ... [2023-08-26 21:35:16,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (1/1) ... [2023-08-26 21:35:16,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (1/1) ... [2023-08-26 21:35:16,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:35:16,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:35:16,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:35:16,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:35:16,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (1/1) ... [2023-08-26 21:35:16,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:35:16,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:35:16,493 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 21:35:16,518 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 21:35:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 21:35:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:35:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 21:35:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 21:35:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:35:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-08-26 21:35:16,535 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-08-26 21:35:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:35:16,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:35:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:35:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:35:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:35:16,537 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 21:35:16,807 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:35:16,809 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:35:17,178 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:35:17,237 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:35:17,237 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-26 21:35:17,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:35:17 BoogieIcfgContainer [2023-08-26 21:35:17,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:35:17,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:35:17,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:35:17,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:35:17,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:35:15" (1/3) ... [2023-08-26 21:35:17,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3265a8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:35:17, skipping insertion in model container [2023-08-26 21:35:17,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:16" (2/3) ... [2023-08-26 21:35:17,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3265a8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:35:17, skipping insertion in model container [2023-08-26 21:35:17,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:35:17" (3/3) ... [2023-08-26 21:35:17,247 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2023-08-26 21:35:17,262 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:35:17,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-26 21:35:17,262 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:35:17,352 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 21:35:17,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 283 transitions, 574 flow [2023-08-26 21:35:17,486 INFO L124 PetriNetUnfolderBase]: 20/297 cut-off events. [2023-08-26 21:35:17,486 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 21:35:17,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 297 events. 20/297 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 557 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 197. Up to 4 conditions per place. [2023-08-26 21:35:17,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 283 transitions, 574 flow [2023-08-26 21:35:17,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 279 transitions, 566 flow [2023-08-26 21:35:17,509 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:35:17,524 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 279 transitions, 566 flow [2023-08-26 21:35:17,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 279 transitions, 566 flow [2023-08-26 21:35:17,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 279 transitions, 566 flow [2023-08-26 21:35:17,572 INFO L124 PetriNetUnfolderBase]: 19/293 cut-off events. [2023-08-26 21:35:17,572 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 21:35:17,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 293 events. 19/293 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 538 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 197. Up to 4 conditions per place. [2023-08-26 21:35:17,579 INFO L119 LiptonReduction]: Number of co-enabled transitions 8352 [2023-08-26 21:35:26,132 INFO L134 LiptonReduction]: Checked pairs total: 9744 [2023-08-26 21:35:26,132 INFO L136 LiptonReduction]: Total number of compositions: 292 [2023-08-26 21:35:26,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:35:26,149 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;@47a8790e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:35:26,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-26 21:35:26,151 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:35:26,151 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 21:35:26,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:35:26,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:26,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 21:35:26,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-26 21:35:26,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:26,157 INFO L85 PathProgramCache]: Analyzing trace with hash 39929, now seen corresponding path program 1 times [2023-08-26 21:35:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:26,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540806068] [2023-08-26 21:35:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:26,463 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 21:35:26,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:26,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540806068] [2023-08-26 21:35:26,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540806068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:26,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:35:26,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:35:26,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153562116] [2023-08-26 21:35:26,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:26,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:35:26,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:26,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:35:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:35:26,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 575 [2023-08-26 21:35:26,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:26,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:26,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 575 [2023-08-26 21:35:26,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:26,622 INFO L124 PetriNetUnfolderBase]: 152/305 cut-off events. [2023-08-26 21:35:26,622 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 21:35:26,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 305 events. 152/305 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1044 event pairs, 115 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 588. Up to 304 conditions per place. [2023-08-26 21:35:26,626 INFO L140 encePairwiseOnDemand]: 563/575 looper letters, 41 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-26 21:35:26,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 178 flow [2023-08-26 21:35:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:35:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:35:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2023-08-26 21:35:26,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45855072463768115 [2023-08-26 21:35:26,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2023-08-26 21:35:26,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2023-08-26 21:35:26,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:26,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2023-08-26 21:35:26,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:26,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:26,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:26,670 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 116 flow. Second operand 3 states and 791 transitions. [2023-08-26 21:35:26,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 178 flow [2023-08-26 21:35:26,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:35:26,675 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 96 flow [2023-08-26 21:35:26,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-08-26 21:35:26,680 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -6 predicate places. [2023-08-26 21:35:26,680 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 96 flow [2023-08-26 21:35:26,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:26,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:26,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 21:35:26,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:35:26,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-26 21:35:26,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash 40448, now seen corresponding path program 1 times [2023-08-26 21:35:26,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:26,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969524084] [2023-08-26 21:35:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:26,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:26,781 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 21:35:26,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:26,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969524084] [2023-08-26 21:35:26,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969524084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:26,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:35:26,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:35:26,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452123660] [2023-08-26 21:35:26,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:26,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:35:26,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:35:26,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:35:26,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 575 [2023-08-26 21:35:26,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:26,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:26,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 575 [2023-08-26 21:35:26,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:26,954 INFO L124 PetriNetUnfolderBase]: 303/608 cut-off events. [2023-08-26 21:35:26,954 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 21:35:26,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227 conditions, 608 events. 303/608 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2681 event pairs, 230 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 1220. Up to 305 conditions per place. [2023-08-26 21:35:26,960 INFO L140 encePairwiseOnDemand]: 572/575 looper letters, 80 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-26 21:35:26,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 83 transitions, 346 flow [2023-08-26 21:35:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:35:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:35:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 827 transitions. [2023-08-26 21:35:26,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47942028985507246 [2023-08-26 21:35:26,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 827 transitions. [2023-08-26 21:35:26,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 827 transitions. [2023-08-26 21:35:26,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:26,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 827 transitions. [2023-08-26 21:35:26,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:26,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:26,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:26,970 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 96 flow. Second operand 3 states and 827 transitions. [2023-08-26 21:35:26,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 83 transitions, 346 flow [2023-08-26 21:35:26,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 83 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:35:26,973 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 107 flow [2023-08-26 21:35:26,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-08-26 21:35:26,974 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2023-08-26 21:35:26,975 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 107 flow [2023-08-26 21:35:26,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:26,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:26,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 21:35:26,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:35:26,979 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-26 21:35:26,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:26,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1257725, now seen corresponding path program 1 times [2023-08-26 21:35:26,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:26,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029017332] [2023-08-26 21:35:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:35:27,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:27,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029017332] [2023-08-26 21:35:27,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029017332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:27,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:35:27,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:35:27,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725217158] [2023-08-26 21:35:27,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:27,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:35:27,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:35:27,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:35:27,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 575 [2023-08-26 21:35:27,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:27,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 575 [2023-08-26 21:35:27,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:27,179 INFO L124 PetriNetUnfolderBase]: 303/607 cut-off events. [2023-08-26 21:35:27,180 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 21:35:27,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 607 events. 303/607 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2677 event pairs, 230 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 1221. Up to 605 conditions per place. [2023-08-26 21:35:27,183 INFO L140 encePairwiseOnDemand]: 573/575 looper letters, 41 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-26 21:35:27,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 187 flow [2023-08-26 21:35:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:35:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:35:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 786 transitions. [2023-08-26 21:35:27,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45565217391304347 [2023-08-26 21:35:27,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 786 transitions. [2023-08-26 21:35:27,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 786 transitions. [2023-08-26 21:35:27,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:27,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 786 transitions. [2023-08-26 21:35:27,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,191 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 107 flow. Second operand 3 states and 786 transitions. [2023-08-26 21:35:27,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 187 flow [2023-08-26 21:35:27,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:35:27,194 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 103 flow [2023-08-26 21:35:27,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-08-26 21:35:27,195 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2023-08-26 21:35:27,196 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 103 flow [2023-08-26 21:35:27,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:27,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:35:27,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:35:27,200 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-26 21:35:27,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:27,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1208483140, now seen corresponding path program 1 times [2023-08-26 21:35:27,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:27,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899383125] [2023-08-26 21:35:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:27,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:27,314 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 21:35:27,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:27,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899383125] [2023-08-26 21:35:27,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899383125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:27,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:35:27,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:35:27,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495892984] [2023-08-26 21:35:27,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:27,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:35:27,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:27,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:35:27,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:35:27,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 575 [2023-08-26 21:35:27,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:27,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 575 [2023-08-26 21:35:27,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:27,405 INFO L124 PetriNetUnfolderBase]: 152/305 cut-off events. [2023-08-26 21:35:27,405 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 21:35:27,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 305 events. 152/305 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1041 event pairs, 115 based on Foata normal form. 1/166 useless extension candidates. Maximal degree in co-relation 613. Up to 304 conditions per place. [2023-08-26 21:35:27,406 INFO L140 encePairwiseOnDemand]: 572/575 looper letters, 40 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-26 21:35:27,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 187 flow [2023-08-26 21:35:27,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:35:27,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:35:27,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 754 transitions. [2023-08-26 21:35:27,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371014492753623 [2023-08-26 21:35:27,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 754 transitions. [2023-08-26 21:35:27,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 754 transitions. [2023-08-26 21:35:27,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:27,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 754 transitions. [2023-08-26 21:35:27,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,415 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,415 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 103 flow. Second operand 3 states and 754 transitions. [2023-08-26 21:35:27,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 187 flow [2023-08-26 21:35:27,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 184 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 21:35:27,417 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 108 flow [2023-08-26 21:35:27,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-08-26 21:35:27,418 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-08-26 21:35:27,418 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 108 flow [2023-08-26 21:35:27,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:27,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 21:35:27,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:35:27,419 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-26 21:35:27,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:27,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1182323417, now seen corresponding path program 1 times [2023-08-26 21:35:27,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:27,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576090108] [2023-08-26 21:35:27,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:27,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 21:35:27,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576090108] [2023-08-26 21:35:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576090108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:27,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:35:27,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:35:27,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225524414] [2023-08-26 21:35:27,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:27,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:35:27,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:27,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:35:27,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:35:27,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 575 [2023-08-26 21:35:27,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:27,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 575 [2023-08-26 21:35:27,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:27,572 INFO L124 PetriNetUnfolderBase]: 94/219 cut-off events. [2023-08-26 21:35:27,573 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 21:35:27,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 219 events. 94/219 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 810 event pairs, 23 based on Foata normal form. 1/152 useless extension candidates. Maximal degree in co-relation 443. Up to 110 conditions per place. [2023-08-26 21:35:27,574 INFO L140 encePairwiseOnDemand]: 568/575 looper letters, 64 selfloop transitions, 3 changer transitions 1/69 dead transitions. [2023-08-26 21:35:27,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 296 flow [2023-08-26 21:35:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:35:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:35:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 786 transitions. [2023-08-26 21:35:27,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45565217391304347 [2023-08-26 21:35:27,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 786 transitions. [2023-08-26 21:35:27,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 786 transitions. [2023-08-26 21:35:27,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:27,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 786 transitions. [2023-08-26 21:35:27,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,583 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 108 flow. Second operand 3 states and 786 transitions. [2023-08-26 21:35:27,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 296 flow [2023-08-26 21:35:27,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:35:27,585 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 97 flow [2023-08-26 21:35:27,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-08-26 21:35:27,586 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -6 predicate places. [2023-08-26 21:35:27,586 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 97 flow [2023-08-26 21:35:27,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:27,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-26 21:35:27,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:35:27,587 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-26 21:35:27,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:27,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1953624205, now seen corresponding path program 1 times [2023-08-26 21:35:27,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:27,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302405446] [2023-08-26 21:35:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:27,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 21:35:27,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:27,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302405446] [2023-08-26 21:35:27,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302405446] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 21:35:27,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041325323] [2023-08-26 21:35:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:27,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 21:35:27,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:35:27,681 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 21:35:27,730 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 21:35:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:27,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 21:35:27,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 21:35:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 21:35:27,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 21:35:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 21:35:27,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041325323] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 21:35:27,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 21:35:27,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-26 21:35:27,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882343491] [2023-08-26 21:35:27,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 21:35:27,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 21:35:27,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:27,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 21:35:27,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-08-26 21:35:27,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 575 [2023-08-26 21:35:27,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 97 flow. Second operand has 8 states, 8 states have (on average 238.5) internal successors, (1908), 8 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:27,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:27,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 575 [2023-08-26 21:35:27,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:28,030 INFO L124 PetriNetUnfolderBase]: 94/197 cut-off events. [2023-08-26 21:35:28,031 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-26 21:35:28,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 197 events. 94/197 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 566 event pairs, 69 based on Foata normal form. 1/154 useless extension candidates. Maximal degree in co-relation 447. Up to 194 conditions per place. [2023-08-26 21:35:28,032 INFO L140 encePairwiseOnDemand]: 572/575 looper letters, 35 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-26 21:35:28,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 177 flow [2023-08-26 21:35:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:35:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:35:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 987 transitions. [2023-08-26 21:35:28,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4291304347826087 [2023-08-26 21:35:28,035 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 987 transitions. [2023-08-26 21:35:28,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 987 transitions. [2023-08-26 21:35:28,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:28,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 987 transitions. [2023-08-26 21:35:28,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:28,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:28,042 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:28,042 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 97 flow. Second operand 4 states and 987 transitions. [2023-08-26 21:35:28,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 177 flow [2023-08-26 21:35:28,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:35:28,044 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 110 flow [2023-08-26 21:35:28,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-08-26 21:35:28,045 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2023-08-26 21:35:28,045 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 110 flow [2023-08-26 21:35:28,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 238.5) internal successors, (1908), 8 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:28,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:28,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 21:35:28,056 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 21:35:28,252 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,SelfDestructingSolverStorable5 [2023-08-26 21:35:28,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-26 21:35:28,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:28,253 INFO L85 PathProgramCache]: Analyzing trace with hash 878154186, now seen corresponding path program 2 times [2023-08-26 21:35:28,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:28,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297391984] [2023-08-26 21:35:28,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:35:28,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:35:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:35:28,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:35:28,353 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:35:28,354 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-08-26 21:35:28,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-26 21:35:28,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-26 21:35:28,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-26 21:35:28,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-26 21:35:28,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-26 21:35:28,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-26 21:35:28,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-26 21:35:28,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-26 21:35:28,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-26 21:35:28,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-26 21:35:28,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-08-26 21:35:28,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-26 21:35:28,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONASSERT (9 of 23 remaining) [2023-08-26 21:35:28,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-08-26 21:35:28,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-08-26 21:35:28,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-08-26 21:35:28,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-26 21:35:28,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONASSERT (4 of 23 remaining) [2023-08-26 21:35:28,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-26 21:35:28,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-26 21:35:28,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-26 21:35:28,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-26 21:35:28,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:35:28,362 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-26 21:35:28,364 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 21:35:28,364 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 21:35:28,427 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 21:35:28,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 459 transitions, 936 flow [2023-08-26 21:35:28,509 INFO L124 PetriNetUnfolderBase]: 38/521 cut-off events. [2023-08-26 21:35:28,509 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 21:35:28,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 521 events. 38/521 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1725 event pairs, 0 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 388. Up to 8 conditions per place. [2023-08-26 21:35:28,518 INFO L82 GeneralOperation]: Start removeDead. Operand has 432 places, 459 transitions, 936 flow [2023-08-26 21:35:28,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 432 places, 459 transitions, 936 flow [2023-08-26 21:35:28,523 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:35:28,523 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 432 places, 459 transitions, 936 flow [2023-08-26 21:35:28,524 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 432 places, 459 transitions, 936 flow [2023-08-26 21:35:28,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 459 transitions, 936 flow [2023-08-26 21:35:28,598 INFO L124 PetriNetUnfolderBase]: 38/521 cut-off events. [2023-08-26 21:35:28,599 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 21:35:28,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 521 events. 38/521 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1725 event pairs, 0 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 388. Up to 8 conditions per place. [2023-08-26 21:35:28,639 INFO L119 LiptonReduction]: Number of co-enabled transitions 83868 [2023-08-26 21:35:39,143 INFO L134 LiptonReduction]: Checked pairs total: 94996 [2023-08-26 21:35:39,143 INFO L136 LiptonReduction]: Total number of compositions: 453 [2023-08-26 21:35:39,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:35:39,145 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;@47a8790e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:35:39,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-26 21:35:39,146 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:35:39,146 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 21:35:39,147 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:35:39,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:39,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 21:35:39,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-26 21:35:39,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:39,147 INFO L85 PathProgramCache]: Analyzing trace with hash 74439, now seen corresponding path program 1 times [2023-08-26 21:35:39,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:39,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772966301] [2023-08-26 21:35:39,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:39,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:39,186 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 21:35:39,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:39,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772966301] [2023-08-26 21:35:39,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772966301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:39,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:35:39,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:35:39,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758269540] [2023-08-26 21:35:39,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:39,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:35:39,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:39,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:35:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:35:39,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 912 [2023-08-26 21:35:39,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 102 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 402.6666666666667) internal successors, (1208), 3 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:39,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:39,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 912 [2023-08-26 21:35:39,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:41,119 INFO L124 PetriNetUnfolderBase]: 15478/22720 cut-off events. [2023-08-26 21:35:41,119 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2023-08-26 21:35:41,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45534 conditions, 22720 events. 15478/22720 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 139925 event pairs, 12572 based on Foata normal form. 0/13877 useless extension candidates. Maximal degree in co-relation 38006. Up to 22651 conditions per place. [2023-08-26 21:35:41,255 INFO L140 encePairwiseOnDemand]: 899/912 looper letters, 85 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-26 21:35:41,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 370 flow [2023-08-26 21:35:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:35:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:35:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1304 transitions. [2023-08-26 21:35:41,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2023-08-26 21:35:41,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1304 transitions. [2023-08-26 21:35:41,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1304 transitions. [2023-08-26 21:35:41,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:41,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1304 transitions. [2023-08-26 21:35:41,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 434.6666666666667) internal successors, (1304), 3 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:41,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:41,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:41,270 INFO L175 Difference]: Start difference. First operand has 86 places, 102 transitions, 222 flow. Second operand 3 states and 1304 transitions. [2023-08-26 21:35:41,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 370 flow [2023-08-26 21:35:41,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:35:41,273 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 200 flow [2023-08-26 21:35:41,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=912, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2023-08-26 21:35:41,275 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-26 21:35:41,275 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 200 flow [2023-08-26 21:35:41,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.6666666666667) internal successors, (1208), 3 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:41,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:41,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 21:35:41,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:35:41,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-26 21:35:41,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:41,276 INFO L85 PathProgramCache]: Analyzing trace with hash 75337, now seen corresponding path program 1 times [2023-08-26 21:35:41,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:41,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010151014] [2023-08-26 21:35:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:41,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:41,323 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 21:35:41,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:41,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010151014] [2023-08-26 21:35:41,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010151014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:41,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:35:41,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:35:41,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853316624] [2023-08-26 21:35:41,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:41,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:35:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:41,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:35:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:35:41,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 912 [2023-08-26 21:35:41,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:41,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:41,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 912 [2023-08-26 21:35:41,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:44,587 INFO L124 PetriNetUnfolderBase]: 30955/45438 cut-off events. [2023-08-26 21:35:44,587 INFO L125 PetriNetUnfolderBase]: For 492/492 co-relation queries the response was YES. [2023-08-26 21:35:44,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91062 conditions, 45438 events. 30955/45438 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 309707 event pairs, 25144 based on Foata normal form. 0/27754 useless extension candidates. Maximal degree in co-relation 91054. Up to 22652 conditions per place. [2023-08-26 21:35:44,802 INFO L140 encePairwiseOnDemand]: 909/912 looper letters, 168 selfloop transitions, 2 changer transitions 0/174 dead transitions. [2023-08-26 21:35:44,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 174 transitions, 722 flow [2023-08-26 21:35:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:35:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:35:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1383 transitions. [2023-08-26 21:35:44,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054824561403509 [2023-08-26 21:35:44,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1383 transitions. [2023-08-26 21:35:44,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1383 transitions. [2023-08-26 21:35:44,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:44,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1383 transitions. [2023-08-26 21:35:44,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 461.0) internal successors, (1383), 3 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:44,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:44,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:44,814 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 200 flow. Second operand 3 states and 1383 transitions. [2023-08-26 21:35:44,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 174 transitions, 722 flow [2023-08-26 21:35:44,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 174 transitions, 721 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:35:44,819 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 211 flow [2023-08-26 21:35:44,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=912, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2023-08-26 21:35:44,822 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2023-08-26 21:35:44,822 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 211 flow [2023-08-26 21:35:44,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:44,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:44,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 21:35:44,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 21:35:44,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-26 21:35:44,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:44,824 INFO L85 PathProgramCache]: Analyzing trace with hash 75123, now seen corresponding path program 1 times [2023-08-26 21:35:44,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:44,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539153227] [2023-08-26 21:35:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:44,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:44,884 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 21:35:44,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:44,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539153227] [2023-08-26 21:35:44,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539153227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:44,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:35:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:35:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152502268] [2023-08-26 21:35:44,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:44,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:35:44,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:44,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:35:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:35:44,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 912 [2023-08-26 21:35:44,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 402.6666666666667) internal successors, (1208), 3 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:44,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:44,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 912 [2023-08-26 21:35:44,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:47,813 INFO L124 PetriNetUnfolderBase]: 30955/45436 cut-off events. [2023-08-26 21:35:47,813 INFO L125 PetriNetUnfolderBase]: For 492/492 co-relation queries the response was YES. [2023-08-26 21:35:47,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91064 conditions, 45436 events. 30955/45436 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 1400. Compared 310045 event pairs, 25144 based on Foata normal form. 0/27755 useless extension candidates. Maximal degree in co-relation 91054. Up to 45298 conditions per place. [2023-08-26 21:35:48,015 INFO L140 encePairwiseOnDemand]: 910/912 looper letters, 85 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-26 21:35:48,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 90 transitions, 381 flow [2023-08-26 21:35:48,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:35:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:35:48,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1292 transitions. [2023-08-26 21:35:48,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-26 21:35:48,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1292 transitions. [2023-08-26 21:35:48,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1292 transitions. [2023-08-26 21:35:48,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:48,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1292 transitions. [2023-08-26 21:35:48,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 430.6666666666667) internal successors, (1292), 3 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:48,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:48,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:48,027 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 211 flow. Second operand 3 states and 1292 transitions. [2023-08-26 21:35:48,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 90 transitions, 381 flow [2023-08-26 21:35:48,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:35:48,031 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 209 flow [2023-08-26 21:35:48,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=912, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2023-08-26 21:35:48,032 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2023-08-26 21:35:48,033 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 209 flow [2023-08-26 21:35:48,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.6666666666667) internal successors, (1208), 3 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:48,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:48,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 21:35:48,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 21:35:48,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-26 21:35:48,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:48,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2339267, now seen corresponding path program 1 times [2023-08-26 21:35:48,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:48,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135250652] [2023-08-26 21:35:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:48,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:35:48,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:48,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135250652] [2023-08-26 21:35:48,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135250652] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 21:35:48,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112286482] [2023-08-26 21:35:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:48,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 21:35:48,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:35:48,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 21:35:48,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 21:35:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:48,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 21:35:48,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 21:35:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:35:48,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 21:35:48,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112286482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:48,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 21:35:48,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 21:35:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388924783] [2023-08-26 21:35:48,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:48,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:35:48,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:48,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:35:48,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:35:48,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 912 [2023-08-26 21:35:48,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 404.75) internal successors, (1619), 4 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:48,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:48,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 912 [2023-08-26 21:35:48,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:51,147 INFO L124 PetriNetUnfolderBase]: 30955/45435 cut-off events. [2023-08-26 21:35:51,147 INFO L125 PetriNetUnfolderBase]: For 492/492 co-relation queries the response was YES. [2023-08-26 21:35:51,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91061 conditions, 45435 events. 30955/45435 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 309621 event pairs, 25144 based on Foata normal form. 0/27756 useless extension candidates. Maximal degree in co-relation 91050. Up to 22649 conditions per place. [2023-08-26 21:35:51,339 INFO L140 encePairwiseOnDemand]: 909/912 looper letters, 165 selfloop transitions, 2 changer transitions 0/171 dead transitions. [2023-08-26 21:35:51,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 171 transitions, 717 flow [2023-08-26 21:35:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:35:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:35:51,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1784 transitions. [2023-08-26 21:35:51,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48903508771929827 [2023-08-26 21:35:51,345 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1784 transitions. [2023-08-26 21:35:51,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1784 transitions. [2023-08-26 21:35:51,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:51,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1784 transitions. [2023-08-26 21:35:51,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:51,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 912.0) internal successors, (4560), 5 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 21:35:51,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 912.0) internal successors, (4560), 5 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 21:35:51,356 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 209 flow. Second operand 4 states and 1784 transitions. [2023-08-26 21:35:51,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 171 transitions, 717 flow [2023-08-26 21:35:51,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 171 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:35:51,359 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 208 flow [2023-08-26 21:35:51,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=912, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2023-08-26 21:35:51,360 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-08-26 21:35:51,360 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 208 flow [2023-08-26 21:35:51,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 404.75) internal successors, (1619), 4 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:51,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:51,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 21:35:51,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 21:35:51,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-26 21:35:51,567 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-26 21:35:51,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:51,568 INFO L85 PathProgramCache]: Analyzing trace with hash 961278284, now seen corresponding path program 1 times [2023-08-26 21:35:51,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:51,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784197948] [2023-08-26 21:35:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:51,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:51,615 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 21:35:51,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:51,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784197948] [2023-08-26 21:35:51,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784197948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:51,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:35:51,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:35:51,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914003021] [2023-08-26 21:35:51,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:51,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:35:51,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:51,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:35:51,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:35:51,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 912 [2023-08-26 21:35:51,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:51,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:51,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 912 [2023-08-26 21:35:51,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:54,205 INFO L124 PetriNetUnfolderBase]: 26817/39593 cut-off events. [2023-08-26 21:35:54,205 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2023-08-26 21:35:54,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79387 conditions, 39593 events. 26817/39593 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 278009 event pairs, 10080 based on Foata normal form. 0/25149 useless extension candidates. Maximal degree in co-relation 79375. Up to 27534 conditions per place. [2023-08-26 21:35:54,385 INFO L140 encePairwiseOnDemand]: 903/912 looper letters, 155 selfloop transitions, 4 changer transitions 1/163 dead transitions. [2023-08-26 21:35:54,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 163 transitions, 682 flow [2023-08-26 21:35:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:35:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:35:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1347 transitions. [2023-08-26 21:35:54,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923245614035088 [2023-08-26 21:35:54,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1347 transitions. [2023-08-26 21:35:54,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1347 transitions. [2023-08-26 21:35:54,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:54,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1347 transitions. [2023-08-26 21:35:54,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:54,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:54,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:54,398 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 208 flow. Second operand 3 states and 1347 transitions. [2023-08-26 21:35:54,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 163 transitions, 682 flow [2023-08-26 21:35:54,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 163 transitions, 679 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:35:54,402 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 231 flow [2023-08-26 21:35:54,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=912, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2023-08-26 21:35:54,403 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-08-26 21:35:54,403 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 231 flow [2023-08-26 21:35:54,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:54,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:54,403 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 21:35:54,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 21:35:54,404 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-26 21:35:54,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:54,404 INFO L85 PathProgramCache]: Analyzing trace with hash -363499761, now seen corresponding path program 1 times [2023-08-26 21:35:54,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:54,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334861240] [2023-08-26 21:35:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:54,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:54,459 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 21:35:54,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:54,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334861240] [2023-08-26 21:35:54,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334861240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:54,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:35:54,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:35:54,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000785497] [2023-08-26 21:35:54,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:54,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:35:54,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:54,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:35:54,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:35:54,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 912 [2023-08-26 21:35:54,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:54,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:54,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 912 [2023-08-26 21:35:54,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:56,842 INFO L124 PetriNetUnfolderBase]: 22871/33817 cut-off events. [2023-08-26 21:35:56,842 INFO L125 PetriNetUnfolderBase]: For 2356/2356 co-relation queries the response was YES. [2023-08-26 21:35:56,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73463 conditions, 33817 events. 22871/33817 cut-off events. For 2356/2356 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 219333 event pairs, 15010 based on Foata normal form. 0/24191 useless extension candidates. Maximal degree in co-relation 73451. Up to 27472 conditions per place. [2023-08-26 21:35:56,976 INFO L140 encePairwiseOnDemand]: 904/912 looper letters, 148 selfloop transitions, 7 changer transitions 0/158 dead transitions. [2023-08-26 21:35:56,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 158 transitions, 673 flow [2023-08-26 21:35:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:35:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:35:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1337 transitions. [2023-08-26 21:35:56,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48866959064327486 [2023-08-26 21:35:56,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1337 transitions. [2023-08-26 21:35:56,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1337 transitions. [2023-08-26 21:35:56,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:56,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1337 transitions. [2023-08-26 21:35:56,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 445.6666666666667) internal successors, (1337), 3 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:56,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:56,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:56,987 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 231 flow. Second operand 3 states and 1337 transitions. [2023-08-26 21:35:56,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 158 transitions, 673 flow [2023-08-26 21:35:57,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 158 transitions, 669 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:35:57,215 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 248 flow [2023-08-26 21:35:57,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=912, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2023-08-26 21:35:57,215 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-08-26 21:35:57,215 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 248 flow [2023-08-26 21:35:57,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:57,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:57,216 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 21:35:57,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 21:35:57,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-26 21:35:57,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash -363500042, now seen corresponding path program 1 times [2023-08-26 21:35:57,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:57,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226769643] [2023-08-26 21:35:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:57,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:57,289 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 21:35:57,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:57,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226769643] [2023-08-26 21:35:57,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226769643] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 21:35:57,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108424299] [2023-08-26 21:35:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:57,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 21:35:57,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:35:57,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 21:35:57,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 21:35:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:57,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 21:35:57,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 21:35:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 21:35:57,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 21:35:57,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108424299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:35:57,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 21:35:57,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 21:35:57,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579897847] [2023-08-26 21:35:57,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:35:57,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:35:57,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:57,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:35:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:35:57,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 912 [2023-08-26 21:35:57,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:57,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:57,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 912 [2023-08-26 21:35:57,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:35:58,720 INFO L124 PetriNetUnfolderBase]: 11436/16910 cut-off events. [2023-08-26 21:35:58,720 INFO L125 PetriNetUnfolderBase]: For 11035/11035 co-relation queries the response was YES. [2023-08-26 21:35:58,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42052 conditions, 16910 events. 11436/16910 cut-off events. For 11035/11035 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 100119 event pairs, 9269 based on Foata normal form. 1/12939 useless extension candidates. Maximal degree in co-relation 42040. Up to 16868 conditions per place. [2023-08-26 21:35:58,794 INFO L140 encePairwiseOnDemand]: 909/912 looper letters, 84 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-26 21:35:58,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 420 flow [2023-08-26 21:35:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:35:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:35:58,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1263 transitions. [2023-08-26 21:35:58,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616228070175439 [2023-08-26 21:35:58,798 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1263 transitions. [2023-08-26 21:35:58,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1263 transitions. [2023-08-26 21:35:58,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:35:58,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1263 transitions. [2023-08-26 21:35:58,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:58,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:58,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:58,805 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 248 flow. Second operand 3 states and 1263 transitions. [2023-08-26 21:35:58,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 420 flow [2023-08-26 21:35:58,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 411 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 21:35:58,812 INFO L231 Difference]: Finished difference. Result has 88 places, 90 transitions, 247 flow [2023-08-26 21:35:58,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=912, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=88, PETRI_TRANSITIONS=90} [2023-08-26 21:35:58,812 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2023-08-26 21:35:58,813 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 90 transitions, 247 flow [2023-08-26 21:35:58,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:58,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:35:58,813 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:35:58,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 21:35:59,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 21:35:59,022 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-26 21:35:59,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:35:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2035933040, now seen corresponding path program 1 times [2023-08-26 21:35:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:35:59,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672937766] [2023-08-26 21:35:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:59,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:35:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 21:35:59,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:35:59,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672937766] [2023-08-26 21:35:59,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672937766] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 21:35:59,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639997337] [2023-08-26 21:35:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:35:59,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 21:35:59,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:35:59,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 21:35:59,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 21:35:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:35:59,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 21:35:59,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 21:35:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 21:35:59,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 21:35:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 21:35:59,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639997337] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 21:35:59,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 21:35:59,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-26 21:35:59,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345951509] [2023-08-26 21:35:59,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 21:35:59,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 21:35:59,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:35:59,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 21:35:59,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-26 21:35:59,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 912 [2023-08-26 21:35:59,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 90 transitions, 247 flow. Second operand has 8 states, 8 states have (on average 373.5) internal successors, (2988), 8 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:35:59,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:35:59,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 912 [2023-08-26 21:35:59,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:36:00,702 INFO L124 PetriNetUnfolderBase]: 9464/14170 cut-off events. [2023-08-26 21:36:00,702 INFO L125 PetriNetUnfolderBase]: For 7946/7946 co-relation queries the response was YES. [2023-08-26 21:36:00,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33912 conditions, 14170 events. 9464/14170 cut-off events. For 7946/7946 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 85037 event pairs, 3416 based on Foata normal form. 843/11680 useless extension candidates. Maximal degree in co-relation 33897. Up to 8136 conditions per place. [2023-08-26 21:36:00,762 INFO L140 encePairwiseOnDemand]: 904/912 looper letters, 147 selfloop transitions, 7 changer transitions 2/159 dead transitions. [2023-08-26 21:36:00,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 159 transitions, 701 flow [2023-08-26 21:36:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:36:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:36:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2385 transitions. [2023-08-26 21:36:00,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43585526315789475 [2023-08-26 21:36:00,767 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2385 transitions. [2023-08-26 21:36:00,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2385 transitions. [2023-08-26 21:36:00,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:36:00,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2385 transitions. [2023-08-26 21:36:00,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 397.5) internal successors, (2385), 6 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:36:00,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 912.0) internal successors, (6384), 7 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:36:00,779 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 912.0) internal successors, (6384), 7 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:36:00,779 INFO L175 Difference]: Start difference. First operand has 88 places, 90 transitions, 247 flow. Second operand 6 states and 2385 transitions. [2023-08-26 21:36:00,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 159 transitions, 701 flow [2023-08-26 21:36:00,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 159 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:36:00,783 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 257 flow [2023-08-26 21:36:00,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=912, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2023-08-26 21:36:00,784 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 4 predicate places. [2023-08-26 21:36:00,784 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 257 flow [2023-08-26 21:36:00,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 373.5) internal successors, (2988), 8 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:36:00,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:36:00,785 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:36:00,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 21:36:00,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 21:36:00,990 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting threadErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-26 21:36:00,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:36:00,990 INFO L85 PathProgramCache]: Analyzing trace with hash 148346258, now seen corresponding path program 1 times [2023-08-26 21:36:00,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:36:00,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580741348] [2023-08-26 21:36:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:36:00,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:36:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:36:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 21:36:01,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:36:01,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580741348] [2023-08-26 21:36:01,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580741348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:36:01,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:36:01,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:36:01,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242215209] [2023-08-26 21:36:01,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:36:01,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:36:01,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:36:01,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:36:01,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:36:01,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 912 [2023-08-26 21:36:01,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:36:01,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:36:01,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 912 [2023-08-26 21:36:01,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:36:02,481 INFO L124 PetriNetUnfolderBase]: 14056/20837 cut-off events. [2023-08-26 21:36:02,481 INFO L125 PetriNetUnfolderBase]: For 15142/15142 co-relation queries the response was YES. [2023-08-26 21:36:02,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51322 conditions, 20837 events. 14056/20837 cut-off events. For 15142/15142 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 124080 event pairs, 7645 based on Foata normal form. 0/15963 useless extension candidates. Maximal degree in co-relation 51306. Up to 13903 conditions per place. [2023-08-26 21:36:02,602 INFO L140 encePairwiseOnDemand]: 908/912 looper letters, 144 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2023-08-26 21:36:02,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 150 transitions, 711 flow [2023-08-26 21:36:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:36:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:36:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1368 transitions. [2023-08-26 21:36:02,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-26 21:36:02,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1368 transitions. [2023-08-26 21:36:02,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1368 transitions. [2023-08-26 21:36:02,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:36:02,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1368 transitions. [2023-08-26 21:36:02,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:36:02,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:36:02,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 912.0) internal successors, (3648), 4 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:36:02,613 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 257 flow. Second operand 3 states and 1368 transitions. [2023-08-26 21:36:02,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 150 transitions, 711 flow [2023-08-26 21:36:02,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 694 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-26 21:36:02,620 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 269 flow [2023-08-26 21:36:02,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=912, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2023-08-26 21:36:02,621 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2023-08-26 21:36:02,621 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 269 flow [2023-08-26 21:36:02,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:36:02,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:36:02,621 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 21:36:02,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 21:36:02,622 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-26 21:36:02,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:36:02,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1602818235, now seen corresponding path program 1 times [2023-08-26 21:36:02,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:36:02,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437869280] [2023-08-26 21:36:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:36:02,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:36:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:36:02,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:36:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:36:02,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:36:02,702 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:36:02,703 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 28 remaining) [2023-08-26 21:36:02,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2023-08-26 21:36:02,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2023-08-26 21:36:02,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2023-08-26 21:36:02,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2023-08-26 21:36:02,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2023-08-26 21:36:02,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2023-08-26 21:36:02,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2023-08-26 21:36:02,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2023-08-26 21:36:02,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2023-08-26 21:36:02,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2023-08-26 21:36:02,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2023-08-26 21:36:02,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2023-08-26 21:36:02,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONASSERT (14 of 28 remaining) [2023-08-26 21:36:02,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 28 remaining) [2023-08-26 21:36:02,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 28 remaining) [2023-08-26 21:36:02,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2023-08-26 21:36:02,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2023-08-26 21:36:02,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONASSERT (9 of 28 remaining) [2023-08-26 21:36:02,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2023-08-26 21:36:02,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2023-08-26 21:36:02,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2023-08-26 21:36:02,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2023-08-26 21:36:02,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONASSERT (4 of 28 remaining) [2023-08-26 21:36:02,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2023-08-26 21:36:02,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2023-08-26 21:36:02,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2023-08-26 21:36:02,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2023-08-26 21:36:02,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 21:36:02,706 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:36:02,707 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 21:36:02,707 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 21:36:02,789 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 21:36:02,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 596 places, 635 transitions, 1300 flow [2023-08-26 21:36:02,992 INFO L124 PetriNetUnfolderBase]: 61/780 cut-off events. [2023-08-26 21:36:02,993 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 21:36:03,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 780 events. 61/780 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3459 event pairs, 1 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 598. Up to 16 conditions per place. [2023-08-26 21:36:03,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 596 places, 635 transitions, 1300 flow [2023-08-26 21:36:03,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 596 places, 635 transitions, 1300 flow [2023-08-26 21:36:03,025 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:36:03,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 596 places, 635 transitions, 1300 flow [2023-08-26 21:36:03,025 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 596 places, 635 transitions, 1300 flow [2023-08-26 21:36:03,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 596 places, 635 transitions, 1300 flow [2023-08-26 21:36:03,194 INFO L124 PetriNetUnfolderBase]: 61/780 cut-off events. [2023-08-26 21:36:03,194 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 21:36:03,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 780 events. 61/780 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3459 event pairs, 1 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 598. Up to 16 conditions per place. [2023-08-26 21:36:03,274 INFO L119 LiptonReduction]: Number of co-enabled transitions 218196 [2023-08-26 21:36:16,659 INFO L134 LiptonReduction]: Checked pairs total: 242155 [2023-08-26 21:36:16,659 INFO L136 LiptonReduction]: Total number of compositions: 634 [2023-08-26 21:36:16,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:36:16,661 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;@47a8790e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:36:16,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-26 21:36:16,663 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:36:16,663 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 21:36:16,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:36:16,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:36:16,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 21:36:16,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-26 21:36:16,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:36:16,664 INFO L85 PathProgramCache]: Analyzing trace with hash 120322, now seen corresponding path program 1 times [2023-08-26 21:36:16,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:36:16,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237502433] [2023-08-26 21:36:16,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:36:16,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:36:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:36:16,703 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 21:36:16,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:36:16,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237502433] [2023-08-26 21:36:16,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237502433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:36:16,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:36:16,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:36:16,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196966663] [2023-08-26 21:36:16,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:36:16,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:36:16,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:36:16,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:36:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:36:16,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 558 out of 1269 [2023-08-26 21:36:16,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 144 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 558.6666666666666) internal successors, (1676), 3 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:36:16,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:36:16,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 558 of 1269 [2023-08-26 21:36:16,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:37:17,973 INFO L124 PetriNetUnfolderBase]: 748969/978061 cut-off events. [2023-08-26 21:37:17,973 INFO L125 PetriNetUnfolderBase]: For 13655/13655 co-relation queries the response was YES. [2023-08-26 21:37:19,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960877 conditions, 978061 events. 748969/978061 cut-off events. For 13655/13655 co-relation queries the response was YES. Maximal size of possible extension queue 18659. Compared 6870238 event pairs, 613995 based on Foata normal form. 14825/619773 useless extension candidates. Maximal degree in co-relation 476569. Up to 976073 conditions per place. [2023-08-26 21:37:22,523 INFO L140 encePairwiseOnDemand]: 1251/1269 looper letters, 122 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2023-08-26 21:37:22,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 127 transitions, 530 flow [2023-08-26 21:37:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:37:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:37:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1814 transitions. [2023-08-26 21:37:22,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47649067507223536 [2023-08-26 21:37:22,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1814 transitions. [2023-08-26 21:37:22,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1814 transitions. [2023-08-26 21:37:22,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:37:22,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1814 transitions. [2023-08-26 21:37:22,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 604.6666666666666) internal successors, (1814), 3 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:37:22,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1269.0) internal successors, (5076), 4 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:37:22,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1269.0) internal successors, (5076), 4 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:37:22,535 INFO L175 Difference]: Start difference. First operand has 119 places, 144 transitions, 318 flow. Second operand 3 states and 1814 transitions. [2023-08-26 21:37:22,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 127 transitions, 530 flow [2023-08-26 21:37:22,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 127 transitions, 530 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:37:22,541 INFO L231 Difference]: Finished difference. Result has 114 places, 127 transitions, 286 flow [2023-08-26 21:37:22,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1269, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=114, PETRI_TRANSITIONS=127} [2023-08-26 21:37:22,541 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -5 predicate places. [2023-08-26 21:37:22,542 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 127 transitions, 286 flow [2023-08-26 21:37:22,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 558.6666666666666) internal successors, (1676), 3 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:37:22,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:37:22,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 21:37:22,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 21:37:22,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-26 21:37:22,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:37:22,543 INFO L85 PathProgramCache]: Analyzing trace with hash 121534, now seen corresponding path program 1 times [2023-08-26 21:37:22,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:37:22,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982110353] [2023-08-26 21:37:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:37:22,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:37:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:37:22,573 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 21:37:22,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:37:22,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982110353] [2023-08-26 21:37:22,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982110353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:37:22,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:37:22,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:37:22,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590940402] [2023-08-26 21:37:22,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:37:22,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:37:22,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:37:22,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:37:22,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:37:22,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1269 [2023-08-26 21:37:22,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 127 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 560.6666666666666) internal successors, (1682), 3 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:37:22,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:37:22,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1269 [2023-08-26 21:37:22,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand