/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:35:02,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:35:02,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 00:35:02,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:35:02,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:35:02,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:35:02,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:35:02,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:35:02,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:35:02,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:35:02,564 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:35:02,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:35:02,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:35:02,566 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:35:02,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:35:02,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:35:02,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:35:02,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:35:02,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:35:02,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:35:02,567 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:35:02,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:35:02,568 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:35:02,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:35:02,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:35:02,569 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:35:02,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:35:02,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:35:02,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:35:02,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:35:02,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:35:02,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:35:02,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:35:02,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:35:02,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:35:02,572 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:35:02,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:35:02,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:35:02,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:35:02,958 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:35:02,958 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:35:02,960 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-08-27 00:35:04,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:35:04,334 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:35:04,334 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-08-27 00:35:04,344 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94fa31a6a/0e945daeeb06427c92714c42ef3296cb/FLAG3df824ab8 [2023-08-27 00:35:04,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94fa31a6a/0e945daeeb06427c92714c42ef3296cb [2023-08-27 00:35:04,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:35:04,359 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:35:04,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:35:04,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:35:04,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:35:04,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c269524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04, skipping insertion in model container [2023-08-27 00:35:04,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,387 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:35:04,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:35:04,575 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:35:04,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:35:04,642 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:35:04,642 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:35:04,656 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:35:04,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04 WrapperNode [2023-08-27 00:35:04,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:35:04,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:35:04,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:35:04,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:35:04,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,733 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 376 [2023-08-27 00:35:04,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:35:04,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:35:04,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:35:04,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:35:04,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:35:04,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:35:04,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:35:04,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:35:04,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (1/1) ... [2023-08-27 00:35:04,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:35:04,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:04,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 00:35:04,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 00:35:04,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:35:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:35:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:35:04,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:35:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:35:04,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:35:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:35:04,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:35:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:35:04,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:35:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 00:35:04,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 00:35:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:35:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:35:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:35:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 00:35:04,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:35:04,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:35:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:35:04,860 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 00:35:05,003 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:35:05,011 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:35:05,537 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:35:06,094 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:35:06,094 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 00:35:06,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:35:06 BoogieIcfgContainer [2023-08-27 00:35:06,097 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:35:06,099 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:35:06,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:35:06,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:35:06,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:35:04" (1/3) ... [2023-08-27 00:35:06,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c272496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:35:06, skipping insertion in model container [2023-08-27 00:35:06,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:04" (2/3) ... [2023-08-27 00:35:06,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c272496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:35:06, skipping insertion in model container [2023-08-27 00:35:06,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:35:06" (3/3) ... [2023-08-27 00:35:06,105 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2023-08-27 00:35:06,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:35:06,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-08-27 00:35:06,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:35:06,330 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 00:35:06,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 274 transitions, 580 flow [2023-08-27 00:35:06,516 INFO L124 PetriNetUnfolderBase]: 19/270 cut-off events. [2023-08-27 00:35:06,517 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:35:06,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 270 events. 19/270 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 297 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-27 00:35:06,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 274 transitions, 580 flow [2023-08-27 00:35:06,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 257 transitions, 538 flow [2023-08-27 00:35:06,538 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:35:06,551 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 257 transitions, 538 flow [2023-08-27 00:35:06,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 257 transitions, 538 flow [2023-08-27 00:35:06,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 257 transitions, 538 flow [2023-08-27 00:35:06,647 INFO L124 PetriNetUnfolderBase]: 19/257 cut-off events. [2023-08-27 00:35:06,647 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:35:06,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 257 events. 19/257 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 294 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-27 00:35:06,652 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-08-27 00:35:22,532 INFO L134 LiptonReduction]: Checked pairs total: 7577 [2023-08-27 00:35:22,533 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-08-27 00:35:22,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:35:22,552 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;@623b6424, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:35:22,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-27 00:35:22,554 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:35:22,555 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 00:35:22,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:35:22,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:22,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 00:35:22,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:22,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:22,560 INFO L85 PathProgramCache]: Analyzing trace with hash 46250, now seen corresponding path program 1 times [2023-08-27 00:35:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:22,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931261171] [2023-08-27 00:35:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:22,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:22,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:22,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931261171] [2023-08-27 00:35:22,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931261171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:22,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:22,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:22,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212106521] [2023-08-27 00:35:22,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:22,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:22,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:22,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:22,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:22,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 540 [2023-08-27 00:35:22,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:22,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:22,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 540 [2023-08-27 00:35:22,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:28,169 INFO L124 PetriNetUnfolderBase]: 36524/45149 cut-off events. [2023-08-27 00:35:28,169 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2023-08-27 00:35:28,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90909 conditions, 45149 events. 36524/45149 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240874 event pairs, 23250 based on Foata normal form. 0/11807 useless extension candidates. Maximal degree in co-relation 80304. Up to 44289 conditions per place. [2023-08-27 00:35:28,631 INFO L140 encePairwiseOnDemand]: 523/540 looper letters, 50 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-08-27 00:35:28,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 256 flow [2023-08-27 00:35:28,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:28,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2023-08-27 00:35:28,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228395061728395 [2023-08-27 00:35:28,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2023-08-27 00:35:28,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2023-08-27 00:35:28,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:28,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2023-08-27 00:35:28,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:28,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:28,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:28,675 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 3 states and 685 transitions. [2023-08-27 00:35:28,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 256 flow [2023-08-27 00:35:28,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 240 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 00:35:28,747 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 166 flow [2023-08-27 00:35:28,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-08-27 00:35:28,752 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2023-08-27 00:35:28,752 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 166 flow [2023-08-27 00:35:28,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:28,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:28,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:35:28,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:35:28,754 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:28,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:28,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1436042, now seen corresponding path program 1 times [2023-08-27 00:35:28,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:28,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474034308] [2023-08-27 00:35:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:28,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:28,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:28,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474034308] [2023-08-27 00:35:28,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474034308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:28,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719206518] [2023-08-27 00:35:28,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:28,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:28,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:28,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:28,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 00:35:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:29,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:35:29,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:29,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:29,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719206518] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:29,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:29,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:35:29,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088006905] [2023-08-27 00:35:29,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:29,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:35:29,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:29,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:35:29,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:35:29,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 540 [2023-08-27 00:35:29,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:29,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:29,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 540 [2023-08-27 00:35:29,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:33,226 INFO L124 PetriNetUnfolderBase]: 36536/45167 cut-off events. [2023-08-27 00:35:33,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:35:33,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89958 conditions, 45167 events. 36536/45167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 241340 event pairs, 23250 based on Foata normal form. 0/11818 useless extension candidates. Maximal degree in co-relation 89853. Up to 44290 conditions per place. [2023-08-27 00:35:33,545 INFO L140 encePairwiseOnDemand]: 531/540 looper letters, 48 selfloop transitions, 25 changer transitions 0/79 dead transitions. [2023-08-27 00:35:33,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 390 flow [2023-08-27 00:35:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:35:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:35:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1521 transitions. [2023-08-27 00:35:33,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2023-08-27 00:35:33,556 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1521 transitions. [2023-08-27 00:35:33,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1521 transitions. [2023-08-27 00:35:33,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:33,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1521 transitions. [2023-08-27 00:35:33,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 217.28571428571428) internal successors, (1521), 7 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 540.0) internal successors, (4320), 8 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,575 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 540.0) internal successors, (4320), 8 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,575 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 166 flow. Second operand 7 states and 1521 transitions. [2023-08-27 00:35:33,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 390 flow [2023-08-27 00:35:33,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:33,578 INFO L231 Difference]: Finished difference. Result has 67 places, 79 transitions, 320 flow [2023-08-27 00:35:33,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=67, PETRI_TRANSITIONS=79} [2023-08-27 00:35:33,580 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-08-27 00:35:33,580 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 79 transitions, 320 flow [2023-08-27 00:35:33,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:33,582 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 00:35:33,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 00:35:33,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:33,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:33,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:33,789 INFO L85 PathProgramCache]: Analyzing trace with hash 44519595, now seen corresponding path program 1 times [2023-08-27 00:35:33,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:33,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368886983] [2023-08-27 00:35:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:33,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:35:33,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:33,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368886983] [2023-08-27 00:35:33,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368886983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:33,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:33,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:35:33,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411181701] [2023-08-27 00:35:33,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:33,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:33,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:33,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:33,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:33,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 540 [2023-08-27 00:35:33,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 79 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:33,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 540 [2023-08-27 00:35:33,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:37,933 INFO L124 PetriNetUnfolderBase]: 36530/45159 cut-off events. [2023-08-27 00:35:37,933 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:35:38,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89967 conditions, 45159 events. 36530/45159 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240687 event pairs, 23250 based on Foata normal form. 0/11821 useless extension candidates. Maximal degree in co-relation 89902. Up to 44284 conditions per place. [2023-08-27 00:35:38,404 INFO L140 encePairwiseOnDemand]: 536/540 looper letters, 59 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-08-27 00:35:38,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 396 flow [2023-08-27 00:35:38,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-08-27 00:35:38,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.412962962962963 [2023-08-27 00:35:38,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-08-27 00:35:38,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-08-27 00:35:38,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:38,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-08-27 00:35:38,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:38,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:38,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:38,414 INFO L175 Difference]: Start difference. First operand has 67 places, 79 transitions, 320 flow. Second operand 3 states and 669 transitions. [2023-08-27 00:35:38,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 396 flow [2023-08-27 00:35:38,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 71 transitions, 370 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:38,417 INFO L231 Difference]: Finished difference. Result has 65 places, 71 transitions, 252 flow [2023-08-27 00:35:38,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=65, PETRI_TRANSITIONS=71} [2023-08-27 00:35:38,418 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-27 00:35:38,418 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 71 transitions, 252 flow [2023-08-27 00:35:38,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:38,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:38,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:35:38,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 00:35:38,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:38,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash -144920331, now seen corresponding path program 1 times [2023-08-27 00:35:38,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:38,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990586768] [2023-08-27 00:35:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:38,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:38,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:38,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:38,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990586768] [2023-08-27 00:35:38,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990586768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:38,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:38,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:38,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859588046] [2023-08-27 00:35:38,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:38,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:38,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:38,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:38,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:38,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 540 [2023-08-27 00:35:38,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 71 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:38,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:38,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 540 [2023-08-27 00:35:38,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:44,819 INFO L124 PetriNetUnfolderBase]: 58348/72895 cut-off events. [2023-08-27 00:35:44,819 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 00:35:44,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146419 conditions, 72895 events. 58348/72895 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6463. Compared 427753 event pairs, 22222 based on Foata normal form. 0/22930 useless extension candidates. Maximal degree in co-relation 146358. Up to 39038 conditions per place. [2023-08-27 00:35:45,267 INFO L140 encePairwiseOnDemand]: 536/540 looper letters, 107 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2023-08-27 00:35:45,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 113 transitions, 563 flow [2023-08-27 00:35:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-08-27 00:35:45,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604938271604938 [2023-08-27 00:35:45,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-08-27 00:35:45,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-08-27 00:35:45,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:45,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-08-27 00:35:45,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-27 00:35:45,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:45,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:45,277 INFO L175 Difference]: Start difference. First operand has 65 places, 71 transitions, 252 flow. Second operand 3 states and 746 transitions. [2023-08-27 00:35:45,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 113 transitions, 563 flow [2023-08-27 00:35:45,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 113 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:45,282 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 262 flow [2023-08-27 00:35:45,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2023-08-27 00:35:45,284 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-08-27 00:35:45,284 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 262 flow [2023-08-27 00:35:45,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:45,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:45,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:35:45,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 00:35:45,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:45,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:45,286 INFO L85 PathProgramCache]: Analyzing trace with hash -144920333, now seen corresponding path program 1 times [2023-08-27 00:35:45,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:45,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493924407] [2023-08-27 00:35:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:45,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:45,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:45,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493924407] [2023-08-27 00:35:45,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493924407] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:45,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:45,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:35:45,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276594542] [2023-08-27 00:35:45,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:45,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:35:45,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:45,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:35:45,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:35:45,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 540 [2023-08-27 00:35:45,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:45,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:45,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 540 [2023-08-27 00:35:45,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:50,995 INFO L124 PetriNetUnfolderBase]: 48921/62183 cut-off events. [2023-08-27 00:35:50,995 INFO L125 PetriNetUnfolderBase]: For 10577/10577 co-relation queries the response was YES. [2023-08-27 00:35:51,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132026 conditions, 62183 events. 48921/62183 cut-off events. For 10577/10577 co-relation queries the response was YES. Maximal size of possible extension queue 5659. Compared 371087 event pairs, 35291 based on Foata normal form. 608/23752 useless extension candidates. Maximal degree in co-relation 131940. Up to 57320 conditions per place. [2023-08-27 00:35:51,469 INFO L140 encePairwiseOnDemand]: 528/540 looper letters, 107 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-27 00:35:51,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 116 transitions, 619 flow [2023-08-27 00:35:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:35:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:35:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 875 transitions. [2023-08-27 00:35:51,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050925925925926 [2023-08-27 00:35:51,472 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 875 transitions. [2023-08-27 00:35:51,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 875 transitions. [2023-08-27 00:35:51,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:51,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 875 transitions. [2023-08-27 00:35:51,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:51,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 540.0) internal successors, (2700), 5 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:51,481 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 540.0) internal successors, (2700), 5 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:51,481 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 262 flow. Second operand 4 states and 875 transitions. [2023-08-27 00:35:51,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 116 transitions, 619 flow [2023-08-27 00:35:51,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 613 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:51,493 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 281 flow [2023-08-27 00:35:51,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2023-08-27 00:35:51,496 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-27 00:35:51,496 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 281 flow [2023-08-27 00:35:51,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:51,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:51,496 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 00:35:51,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 00:35:51,497 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:51,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:51,497 INFO L85 PathProgramCache]: Analyzing trace with hash -166269782, now seen corresponding path program 2 times [2023-08-27 00:35:51,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:51,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704435601] [2023-08-27 00:35:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:51,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:51,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:51,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704435601] [2023-08-27 00:35:51,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704435601] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:51,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950251788] [2023-08-27 00:35:51,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:35:51,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:51,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:51,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:51,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 00:35:51,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:35:51,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:35:51,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:35:51,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 00:35:51,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:51,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950251788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:51,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:51,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 00:35:51,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902551888] [2023-08-27 00:35:51,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:51,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:51,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:51,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:51,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:35:51,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 540 [2023-08-27 00:35:51,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:51,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:51,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 540 [2023-08-27 00:35:51,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:57,318 INFO L124 PetriNetUnfolderBase]: 48920/62166 cut-off events. [2023-08-27 00:35:57,318 INFO L125 PetriNetUnfolderBase]: For 8293/8293 co-relation queries the response was YES. [2023-08-27 00:35:57,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143001 conditions, 62166 events. 48920/62166 cut-off events. For 8293/8293 co-relation queries the response was YES. Maximal size of possible extension queue 5589. Compared 373367 event pairs, 35293 based on Foata normal form. 1/23923 useless extension candidates. Maximal degree in co-relation 142920. Up to 60952 conditions per place. [2023-08-27 00:35:57,668 INFO L140 encePairwiseOnDemand]: 537/540 looper letters, 60 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-08-27 00:35:57,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 403 flow [2023-08-27 00:35:57,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-27 00:35:57,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154320987654321 [2023-08-27 00:35:57,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-27 00:35:57,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-27 00:35:57,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:57,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-27 00:35:57,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:57,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:57,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:57,675 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 281 flow. Second operand 3 states and 673 transitions. [2023-08-27 00:35:57,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 403 flow [2023-08-27 00:35:57,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 397 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:57,682 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 277 flow [2023-08-27 00:35:57,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2023-08-27 00:35:57,682 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-27 00:35:57,683 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 277 flow [2023-08-27 00:35:57,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:57,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:57,683 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 00:35:57,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 00:35:57,887 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,SelfDestructingSolverStorable5 [2023-08-27 00:35:57,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:35:57,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:57,888 INFO L85 PathProgramCache]: Analyzing trace with hash -205694691, now seen corresponding path program 1 times [2023-08-27 00:35:57,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:57,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225732505] [2023-08-27 00:35:57,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:57,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:58,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225732505] [2023-08-27 00:35:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225732505] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242931305] [2023-08-27 00:35:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:58,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:58,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:58,011 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:58,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 00:35:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:58,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:35:58,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:58,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:58,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242931305] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:58,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:58,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 00:35:58,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954233975] [2023-08-27 00:35:58,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:58,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:35:58,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:58,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:35:58,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:35:58,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 540 [2023-08-27 00:35:58,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 277 flow. Second operand has 13 states, 13 states have (on average 207.15384615384616) internal successors, (2693), 13 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:58,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:58,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 540 [2023-08-27 00:35:58,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:03,587 INFO L124 PetriNetUnfolderBase]: 48945/62216 cut-off events. [2023-08-27 00:36:03,587 INFO L125 PetriNetUnfolderBase]: For 8332/8332 co-relation queries the response was YES. [2023-08-27 00:36:03,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143162 conditions, 62216 events. 48945/62216 cut-off events. For 8332/8332 co-relation queries the response was YES. Maximal size of possible extension queue 5497. Compared 373818 event pairs, 35293 based on Foata normal form. 12/23972 useless extension candidates. Maximal degree in co-relation 142935. Up to 60955 conditions per place. [2023-08-27 00:36:03,972 INFO L140 encePairwiseOnDemand]: 534/540 looper letters, 49 selfloop transitions, 41 changer transitions 0/96 dead transitions. [2023-08-27 00:36:03,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 607 flow [2023-08-27 00:36:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:36:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:36:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2566 transitions. [2023-08-27 00:36:03,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39598765432098765 [2023-08-27 00:36:03,980 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2566 transitions. [2023-08-27 00:36:03,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2566 transitions. [2023-08-27 00:36:03,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:03,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2566 transitions. [2023-08-27 00:36:03,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 213.83333333333334) internal successors, (2566), 12 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:03,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 540.0) internal successors, (7020), 13 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:03,996 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 540.0) internal successors, (7020), 13 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:03,996 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 277 flow. Second operand 12 states and 2566 transitions. [2023-08-27 00:36:03,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 607 flow [2023-08-27 00:36:04,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 96 transitions, 583 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:36:04,006 INFO L231 Difference]: Finished difference. Result has 84 places, 96 transitions, 539 flow [2023-08-27 00:36:04,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=539, PETRI_PLACES=84, PETRI_TRANSITIONS=96} [2023-08-27 00:36:04,007 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2023-08-27 00:36:04,007 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 96 transitions, 539 flow [2023-08-27 00:36:04,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 207.15384615384616) internal successors, (2693), 13 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:04,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:04,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:04,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 00:36:04,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:04,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:04,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:04,214 INFO L85 PathProgramCache]: Analyzing trace with hash -838044205, now seen corresponding path program 1 times [2023-08-27 00:36:04,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:04,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515634259] [2023-08-27 00:36:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:04,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:04,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:04,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515634259] [2023-08-27 00:36:04,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515634259] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:04,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700793023] [2023-08-27 00:36:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:04,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:04,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:04,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:04,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 00:36:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:04,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:36:04,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:04,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:36:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700793023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:04,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:36:04,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 00:36:04,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527772651] [2023-08-27 00:36:04,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:04,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:36:04,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:36:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:36:04,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 540 [2023-08-27 00:36:04,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 96 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:04,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:04,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 540 [2023-08-27 00:36:04,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:08,487 INFO L124 PetriNetUnfolderBase]: 34885/44467 cut-off events. [2023-08-27 00:36:08,487 INFO L125 PetriNetUnfolderBase]: For 7224/7224 co-relation queries the response was YES. [2023-08-27 00:36:08,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101747 conditions, 44467 events. 34885/44467 cut-off events. For 7224/7224 co-relation queries the response was YES. Maximal size of possible extension queue 3719. Compared 258929 event pairs, 24736 based on Foata normal form. 2049/19007 useless extension candidates. Maximal degree in co-relation 101625. Up to 43639 conditions per place. [2023-08-27 00:36:08,802 INFO L140 encePairwiseOnDemand]: 537/540 looper letters, 87 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-27 00:36:08,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 94 transitions, 707 flow [2023-08-27 00:36:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:36:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:36:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-27 00:36:08,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2023-08-27 00:36:08,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-27 00:36:08,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-27 00:36:08,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:08,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-27 00:36:08,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:08,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:08,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:08,809 INFO L175 Difference]: Start difference. First operand has 84 places, 96 transitions, 539 flow. Second operand 3 states and 705 transitions. [2023-08-27 00:36:08,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 94 transitions, 707 flow [2023-08-27 00:36:08,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 94 transitions, 583 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-27 00:36:08,816 INFO L231 Difference]: Finished difference. Result has 79 places, 94 transitions, 409 flow [2023-08-27 00:36:08,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=409, PETRI_PLACES=79, PETRI_TRANSITIONS=94} [2023-08-27 00:36:08,817 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-08-27 00:36:08,817 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 94 transitions, 409 flow [2023-08-27 00:36:08,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:08,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:08,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:08,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:09,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:09,022 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:09,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash -838044204, now seen corresponding path program 1 times [2023-08-27 00:36:09,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:09,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496966642] [2023-08-27 00:36:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:09,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:09,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:09,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496966642] [2023-08-27 00:36:09,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496966642] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:09,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:09,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:36:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240060241] [2023-08-27 00:36:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:09,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:36:09,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:09,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:36:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:36:09,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 540 [2023-08-27 00:36:09,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 94 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:09,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:09,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 540 [2023-08-27 00:36:09,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:13,481 INFO L124 PetriNetUnfolderBase]: 42477/53818 cut-off events. [2023-08-27 00:36:13,482 INFO L125 PetriNetUnfolderBase]: For 4994/4994 co-relation queries the response was YES. [2023-08-27 00:36:13,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118490 conditions, 53818 events. 42477/53818 cut-off events. For 4994/4994 co-relation queries the response was YES. Maximal size of possible extension queue 4257. Compared 312106 event pairs, 30567 based on Foata normal form. 0/23860 useless extension candidates. Maximal degree in co-relation 118468. Up to 53526 conditions per place. [2023-08-27 00:36:13,848 INFO L140 encePairwiseOnDemand]: 538/540 looper letters, 88 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2023-08-27 00:36:13,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 92 transitions, 577 flow [2023-08-27 00:36:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:36:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:36:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 700 transitions. [2023-08-27 00:36:13,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2023-08-27 00:36:13,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 700 transitions. [2023-08-27 00:36:13,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 700 transitions. [2023-08-27 00:36:13,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:13,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 700 transitions. [2023-08-27 00:36:13,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:13,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:13,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:13,855 INFO L175 Difference]: Start difference. First operand has 79 places, 94 transitions, 409 flow. Second operand 3 states and 700 transitions. [2023-08-27 00:36:13,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 92 transitions, 577 flow [2023-08-27 00:36:13,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:36:13,869 INFO L231 Difference]: Finished difference. Result has 79 places, 92 transitions, 400 flow [2023-08-27 00:36:13,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=79, PETRI_TRANSITIONS=92} [2023-08-27 00:36:13,869 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-08-27 00:36:13,870 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 92 transitions, 400 flow [2023-08-27 00:36:13,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:13,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:13,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:13,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 00:36:13,870 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:13,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash -209563451, now seen corresponding path program 1 times [2023-08-27 00:36:13,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:13,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415884119] [2023-08-27 00:36:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:13,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:13,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:13,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415884119] [2023-08-27 00:36:13,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415884119] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:13,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955616224] [2023-08-27 00:36:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:13,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:13,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:13,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:13,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 00:36:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:14,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 00:36:14,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:14,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:14,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955616224] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:14,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:14,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 9 [2023-08-27 00:36:14,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863655106] [2023-08-27 00:36:14,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:14,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 00:36:14,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:14,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 00:36:14,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:36:14,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 540 [2023-08-27 00:36:14,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 400 flow. Second operand has 11 states, 11 states have (on average 188.9090909090909) internal successors, (2078), 11 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:14,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:14,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 540 [2023-08-27 00:36:14,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:24,539 INFO L124 PetriNetUnfolderBase]: 92275/116499 cut-off events. [2023-08-27 00:36:24,539 INFO L125 PetriNetUnfolderBase]: For 9494/9494 co-relation queries the response was YES. [2023-08-27 00:36:24,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256613 conditions, 116499 events. 92275/116499 cut-off events. For 9494/9494 co-relation queries the response was YES. Maximal size of possible extension queue 7634. Compared 726114 event pairs, 22717 based on Foata normal form. 2178/53522 useless extension candidates. Maximal degree in co-relation 256590. Up to 24067 conditions per place. [2023-08-27 00:36:25,306 INFO L140 encePairwiseOnDemand]: 527/540 looper letters, 287 selfloop transitions, 18 changer transitions 0/308 dead transitions. [2023-08-27 00:36:25,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 308 transitions, 1643 flow [2023-08-27 00:36:25,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:36:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:36:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2497 transitions. [2023-08-27 00:36:25,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3853395061728395 [2023-08-27 00:36:25,312 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2497 transitions. [2023-08-27 00:36:25,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2497 transitions. [2023-08-27 00:36:25,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:25,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2497 transitions. [2023-08-27 00:36:25,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 208.08333333333334) internal successors, (2497), 12 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:25,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 540.0) internal successors, (7020), 13 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:25,326 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 540.0) internal successors, (7020), 13 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:25,327 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 400 flow. Second operand 12 states and 2497 transitions. [2023-08-27 00:36:25,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 308 transitions, 1643 flow [2023-08-27 00:36:25,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 308 transitions, 1642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:36:25,343 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 559 flow [2023-08-27 00:36:25,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=559, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2023-08-27 00:36:25,344 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 23 predicate places. [2023-08-27 00:36:25,344 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 559 flow [2023-08-27 00:36:25,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 188.9090909090909) internal successors, (2078), 11 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:25,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:25,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:25,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:25,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 00:36:25,552 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:25,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:25,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1821581731, now seen corresponding path program 1 times [2023-08-27 00:36:25,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:25,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128501239] [2023-08-27 00:36:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:25,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:25,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:25,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128501239] [2023-08-27 00:36:25,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128501239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:25,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:25,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:36:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229210943] [2023-08-27 00:36:25,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:25,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:36:25,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:25,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:36:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:36:25,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 540 [2023-08-27 00:36:25,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 559 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:25,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:25,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 540 [2023-08-27 00:36:25,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:32,546 INFO L124 PetriNetUnfolderBase]: 57493/73806 cut-off events. [2023-08-27 00:36:32,547 INFO L125 PetriNetUnfolderBase]: For 26284/26284 co-relation queries the response was YES. [2023-08-27 00:36:32,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186067 conditions, 73806 events. 57493/73806 cut-off events. For 26284/26284 co-relation queries the response was YES. Maximal size of possible extension queue 5066. Compared 459207 event pairs, 41357 based on Foata normal form. 0/30605 useless extension candidates. Maximal degree in co-relation 186037. Up to 72623 conditions per place. [2023-08-27 00:36:33,344 INFO L140 encePairwiseOnDemand]: 538/540 looper letters, 96 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2023-08-27 00:36:33,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 103 transitions, 751 flow [2023-08-27 00:36:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:36:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:36:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2023-08-27 00:36:33,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43148148148148147 [2023-08-27 00:36:33,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2023-08-27 00:36:33,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2023-08-27 00:36:33,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:33,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2023-08-27 00:36:33,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:33,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:33,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:33,350 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 559 flow. Second operand 3 states and 699 transitions. [2023-08-27 00:36:33,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 103 transitions, 751 flow [2023-08-27 00:36:33,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 103 transitions, 735 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 00:36:33,371 INFO L231 Difference]: Finished difference. Result has 93 places, 103 transitions, 543 flow [2023-08-27 00:36:33,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=543, PETRI_PLACES=93, PETRI_TRANSITIONS=103} [2023-08-27 00:36:33,371 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 21 predicate places. [2023-08-27 00:36:33,372 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 103 transitions, 543 flow [2023-08-27 00:36:33,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:33,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:33,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:33,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 00:36:33,372 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:33,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:33,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1821581727, now seen corresponding path program 1 times [2023-08-27 00:36:33,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:33,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583302713] [2023-08-27 00:36:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:33,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:33,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583302713] [2023-08-27 00:36:33,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583302713] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:33,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:33,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:36:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427547647] [2023-08-27 00:36:33,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:33,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:36:33,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:33,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:36:33,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:36:33,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 540 [2023-08-27 00:36:33,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 103 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:33,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:33,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 540 [2023-08-27 00:36:33,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:43,847 INFO L124 PetriNetUnfolderBase]: 84970/112791 cut-off events. [2023-08-27 00:36:43,847 INFO L125 PetriNetUnfolderBase]: For 39189/39189 co-relation queries the response was YES. [2023-08-27 00:36:44,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291936 conditions, 112791 events. 84970/112791 cut-off events. For 39189/39189 co-relation queries the response was YES. Maximal size of possible extension queue 7781. Compared 818149 event pairs, 32824 based on Foata normal form. 0/58037 useless extension candidates. Maximal degree in co-relation 291907. Up to 63585 conditions per place. [2023-08-27 00:36:44,749 INFO L140 encePairwiseOnDemand]: 536/540 looper letters, 141 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2023-08-27 00:36:44,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 146 transitions, 994 flow [2023-08-27 00:36:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:36:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:36:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2023-08-27 00:36:44,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2023-08-27 00:36:44,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2023-08-27 00:36:44,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2023-08-27 00:36:44,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:44,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2023-08-27 00:36:44,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:44,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:44,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:44,754 INFO L175 Difference]: Start difference. First operand has 93 places, 103 transitions, 543 flow. Second operand 3 states and 735 transitions. [2023-08-27 00:36:44,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 146 transitions, 994 flow [2023-08-27 00:36:44,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 146 transitions, 993 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:36:44,780 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 556 flow [2023-08-27 00:36:44,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=556, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2023-08-27 00:36:44,780 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 23 predicate places. [2023-08-27 00:36:44,780 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 556 flow [2023-08-27 00:36:44,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:44,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:44,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:44,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 00:36:44,781 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:44,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:44,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1821581730, now seen corresponding path program 1 times [2023-08-27 00:36:44,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:44,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015692939] [2023-08-27 00:36:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:44,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:44,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:44,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015692939] [2023-08-27 00:36:44,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015692939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:44,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:36:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914156268] [2023-08-27 00:36:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:36:44,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:36:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:36:44,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 540 [2023-08-27 00:36:44,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 556 flow. Second operand has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:44,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:44,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 540 [2023-08-27 00:36:44,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:54,335 INFO L124 PetriNetUnfolderBase]: 70895/96350 cut-off events. [2023-08-27 00:36:54,335 INFO L125 PetriNetUnfolderBase]: For 35408/35408 co-relation queries the response was YES. [2023-08-27 00:36:54,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259781 conditions, 96350 events. 70895/96350 cut-off events. For 35408/35408 co-relation queries the response was YES. Maximal size of possible extension queue 6890. Compared 715962 event pairs, 63596 based on Foata normal form. 666/52124 useless extension candidates. Maximal degree in co-relation 259750. Up to 89682 conditions per place. [2023-08-27 00:36:55,356 INFO L140 encePairwiseOnDemand]: 528/540 looper letters, 118 selfloop transitions, 15 changer transitions 0/139 dead transitions. [2023-08-27 00:36:55,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 139 transitions, 973 flow [2023-08-27 00:36:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:36:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:36:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 862 transitions. [2023-08-27 00:36:55,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3990740740740741 [2023-08-27 00:36:55,358 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 862 transitions. [2023-08-27 00:36:55,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 862 transitions. [2023-08-27 00:36:55,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:55,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 862 transitions. [2023-08-27 00:36:55,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:55,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 540.0) internal successors, (2700), 5 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:55,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 540.0) internal successors, (2700), 5 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:55,362 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 556 flow. Second operand 4 states and 862 transitions. [2023-08-27 00:36:55,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 139 transitions, 973 flow [2023-08-27 00:36:55,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 139 transitions, 971 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:36:55,399 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 604 flow [2023-08-27 00:36:55,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=604, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2023-08-27 00:36:55,400 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 26 predicate places. [2023-08-27 00:36:55,400 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 604 flow [2023-08-27 00:36:55,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:55,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:55,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:55,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 00:36:55,400 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:36:55,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:55,401 INFO L85 PathProgramCache]: Analyzing trace with hash 155940907, now seen corresponding path program 1 times [2023-08-27 00:36:55,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:55,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212266707] [2023-08-27 00:36:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:55,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:55,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:55,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212266707] [2023-08-27 00:36:55,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212266707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:55,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:55,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:36:55,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876655249] [2023-08-27 00:36:55,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:55,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:36:55,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:55,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:36:55,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:36:55,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 540 [2023-08-27 00:36:55,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 604 flow. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:55,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:55,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 540 [2023-08-27 00:36:55,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:03,471 INFO L124 PetriNetUnfolderBase]: 57737/78638 cut-off events. [2023-08-27 00:37:03,471 INFO L125 PetriNetUnfolderBase]: For 38321/38321 co-relation queries the response was YES. [2023-08-27 00:37:03,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231479 conditions, 78638 events. 57737/78638 cut-off events. For 38321/38321 co-relation queries the response was YES. Maximal size of possible extension queue 5593. Compared 575664 event pairs, 51500 based on Foata normal form. 0/48718 useless extension candidates. Maximal degree in co-relation 231447. Up to 77287 conditions per place. [2023-08-27 00:37:04,162 INFO L140 encePairwiseOnDemand]: 538/540 looper letters, 84 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2023-08-27 00:37:04,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 103 transitions, 794 flow [2023-08-27 00:37:04,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:37:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:37:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-08-27 00:37:04,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308641975308642 [2023-08-27 00:37:04,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-08-27 00:37:04,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-08-27 00:37:04,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:04,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-08-27 00:37:04,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:04,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:04,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:04,167 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 604 flow. Second operand 3 states and 698 transitions. [2023-08-27 00:37:04,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 103 transitions, 794 flow [2023-08-27 00:37:04,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 103 transitions, 763 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 00:37:04,209 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 595 flow [2023-08-27 00:37:04,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=595, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2023-08-27 00:37:04,210 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 25 predicate places. [2023-08-27 00:37:04,210 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 595 flow [2023-08-27 00:37:04,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:04,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:04,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:04,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 00:37:04,210 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:37:04,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:04,211 INFO L85 PathProgramCache]: Analyzing trace with hash 155940909, now seen corresponding path program 1 times [2023-08-27 00:37:04,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:04,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036017497] [2023-08-27 00:37:04,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:04,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:04,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:04,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036017497] [2023-08-27 00:37:04,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036017497] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:04,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518269012] [2023-08-27 00:37:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:04,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:04,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:04,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:04,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 00:37:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:04,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:37:04,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:37:04,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:37:04,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518269012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:37:04,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:37:04,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 00:37:04,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89105312] [2023-08-27 00:37:04,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:37:04,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:37:04,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:04,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:37:04,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:37:04,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 540 [2023-08-27 00:37:04,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 595 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:04,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:04,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 540 [2023-08-27 00:37:04,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:09,904 INFO L124 PetriNetUnfolderBase]: 39711/54504 cut-off events. [2023-08-27 00:37:09,904 INFO L125 PetriNetUnfolderBase]: For 28955/28955 co-relation queries the response was YES. [2023-08-27 00:37:10,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159474 conditions, 54504 events. 39711/54504 cut-off events. For 28955/28955 co-relation queries the response was YES. Maximal size of possible extension queue 3695. Compared 387928 event pairs, 34976 based on Foata normal form. 3762/37283 useless extension candidates. Maximal degree in co-relation 159443. Up to 53632 conditions per place. [2023-08-27 00:37:10,372 INFO L140 encePairwiseOnDemand]: 537/540 looper letters, 94 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2023-08-27 00:37:10,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 101 transitions, 777 flow [2023-08-27 00:37:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:37:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:37:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 700 transitions. [2023-08-27 00:37:10,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2023-08-27 00:37:10,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 700 transitions. [2023-08-27 00:37:10,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 700 transitions. [2023-08-27 00:37:10,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:10,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 700 transitions. [2023-08-27 00:37:10,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:10,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:10,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:10,377 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 595 flow. Second operand 3 states and 700 transitions. [2023-08-27 00:37:10,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 101 transitions, 777 flow [2023-08-27 00:37:10,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 101 transitions, 764 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:37:10,408 INFO L231 Difference]: Finished difference. Result has 96 places, 101 transitions, 576 flow [2023-08-27 00:37:10,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=96, PETRI_TRANSITIONS=101} [2023-08-27 00:37:10,408 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 24 predicate places. [2023-08-27 00:37:10,408 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 101 transitions, 576 flow [2023-08-27 00:37:10,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:10,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:10,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:10,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:10,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 00:37:10,615 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:37:10,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash 539203053, now seen corresponding path program 1 times [2023-08-27 00:37:10,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:10,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289583416] [2023-08-27 00:37:10,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:10,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:37:10,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:10,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289583416] [2023-08-27 00:37:10,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289583416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:37:10,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:37:10,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:37:10,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88114069] [2023-08-27 00:37:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:37:10,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:37:10,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:37:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:37:10,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 540 [2023-08-27 00:37:10,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 101 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:10,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:10,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 540 [2023-08-27 00:37:10,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand