/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-counter-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:35:42,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:35:42,311 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 00:35:42,318 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:35:42,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:35:42,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:35:42,349 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:35:42,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:35:42,350 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:35:42,354 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:35:42,354 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:35:42,354 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:35:42,354 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:35:42,356 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:35:42,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:35:42,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:35:42,356 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:35:42,357 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:35:42,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:35:42,357 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:35:42,357 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:35:42,358 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:35:42,358 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:35:42,359 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:35:42,359 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:35:42,359 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:35:42,359 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:35:42,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:35:42,360 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:35:42,360 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:35:42,361 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:35:42,361 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:35:42,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:35:42,361 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:35:42,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:35:42,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:35:42,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:35:42,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:35:42,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:35:42,677 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:35:42,677 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:35:42,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c [2023-08-27 00:35:43,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:35:43,953 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:35:43,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c [2023-08-27 00:35:43,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9300f2056/02e9052fd73c422badfffa8829f30cd8/FLAGe3e363f03 [2023-08-27 00:35:44,328 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9300f2056/02e9052fd73c422badfffa8829f30cd8 [2023-08-27 00:35:44,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:35:44,336 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:35:44,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:35:44,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:35:44,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:35:44,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e722e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44, skipping insertion in model container [2023-08-27 00:35:44,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,368 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:35:44,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:35:44,562 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:35:44,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:35:44,608 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:35:44,608 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:35:44,614 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:35:44,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44 WrapperNode [2023-08-27 00:35:44,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:35:44,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:35:44,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:35:44,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:35:44,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,659 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 185 [2023-08-27 00:35:44,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:35:44,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:35:44,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:35:44,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:35:44,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,685 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:35:44,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:35:44,702 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:35:44,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:35:44,703 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (1/1) ... [2023-08-27 00:35:44,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:35:44,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:44,731 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 00:35:44,738 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 00:35:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:35:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:35:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:35:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:35:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:35:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:35:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:35:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:35:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:35:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:35:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:35:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 00:35:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:35:44,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:35:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:35:44,767 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 00:35:44,846 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:35:44,851 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:35:45,257 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:35:45,520 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:35:45,521 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 00:35:45,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:35:45 BoogieIcfgContainer [2023-08-27 00:35:45,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:35:45,527 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:35:45,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:35:45,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:35:45,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:35:44" (1/3) ... [2023-08-27 00:35:45,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da43d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:35:45, skipping insertion in model container [2023-08-27 00:35:45,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:44" (2/3) ... [2023-08-27 00:35:45,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da43d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:35:45, skipping insertion in model container [2023-08-27 00:35:45,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:35:45" (3/3) ... [2023-08-27 00:35:45,532 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2023-08-27 00:35:45,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:35:45,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-08-27 00:35:45,548 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:35:45,641 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 00:35:45,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 139 transitions, 294 flow [2023-08-27 00:35:45,750 INFO L124 PetriNetUnfolderBase]: 9/137 cut-off events. [2023-08-27 00:35:45,750 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 00:35:45,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 9/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 194 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-27 00:35:45,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 139 transitions, 294 flow [2023-08-27 00:35:45,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 128 transitions, 268 flow [2023-08-27 00:35:45,766 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:35:45,777 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 128 transitions, 268 flow [2023-08-27 00:35:45,780 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 128 transitions, 268 flow [2023-08-27 00:35:45,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 268 flow [2023-08-27 00:35:45,803 INFO L124 PetriNetUnfolderBase]: 9/128 cut-off events. [2023-08-27 00:35:45,803 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 00:35:45,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 128 events. 9/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 196 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-27 00:35:45,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 1628 [2023-08-27 00:35:51,481 INFO L134 LiptonReduction]: Checked pairs total: 3190 [2023-08-27 00:35:51,481 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-27 00:35:51,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:35:51,498 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;@6fa51dd8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:35:51,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-27 00:35:51,500 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:35:51,500 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 00:35:51,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:35:51,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:51,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 00:35:51,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:51,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:51,505 INFO L85 PathProgramCache]: Analyzing trace with hash 23692, now seen corresponding path program 1 times [2023-08-27 00:35:51,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:51,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883099895] [2023-08-27 00:35:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:51,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:51,688 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 00:35:51,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:51,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883099895] [2023-08-27 00:35:51,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883099895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:51,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:51,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:51,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967421978] [2023-08-27 00:35:51,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:51,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:51,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:51,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 266 [2023-08-27 00:35:51,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 00:35:51,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:51,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 266 [2023-08-27 00:35:51,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:51,877 INFO L124 PetriNetUnfolderBase]: 505/750 cut-off events. [2023-08-27 00:35:51,878 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 00:35:51,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 750 events. 505/750 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 3454 event pairs, 280 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 1398. Up to 740 conditions per place. [2023-08-27 00:35:51,884 INFO L140 encePairwiseOnDemand]: 259/266 looper letters, 28 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-27 00:35:51,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 136 flow [2023-08-27 00:35:51,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:51,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-08-27 00:35:51,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423558897243108 [2023-08-27 00:35:51,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-08-27 00:35:51,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-08-27 00:35:51,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:51,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-08-27 00:35:51,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 00:35:51,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 00:35:51,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 00:35:51,908 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 3 states and 353 transitions. [2023-08-27 00:35:51,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 136 flow [2023-08-27 00:35:51,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:35:51,914 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 72 flow [2023-08-27 00:35:51,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-27 00:35:51,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -7 predicate places. [2023-08-27 00:35:51,919 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 72 flow [2023-08-27 00:35:51,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 00:35:51,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:51,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 00:35:51,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:35:51,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:51,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:51,920 INFO L85 PathProgramCache]: Analyzing trace with hash 23705, now seen corresponding path program 1 times [2023-08-27 00:35:51,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:51,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729300824] [2023-08-27 00:35:51,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:51,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:51,977 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 00:35:51,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:51,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729300824] [2023-08-27 00:35:51,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729300824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:51,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:51,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:51,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711127515] [2023-08-27 00:35:51,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:51,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:51,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:51,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:51,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:51,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 266 [2023-08-27 00:35:51,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 00:35:51,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:51,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 266 [2023-08-27 00:35:51,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:52,117 INFO L124 PetriNetUnfolderBase]: 506/752 cut-off events. [2023-08-27 00:35:52,118 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:35:52,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1513 conditions, 752 events. 506/752 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 3468 event pairs, 280 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 1495. Up to 744 conditions per place. [2023-08-27 00:35:52,123 INFO L140 encePairwiseOnDemand]: 262/266 looper letters, 29 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-27 00:35:52,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 142 flow [2023-08-27 00:35:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:52,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:52,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-27 00:35:52,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398496240601504 [2023-08-27 00:35:52,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-27 00:35:52,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-27 00:35:52,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:52,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-27 00:35:52,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 00:35:52,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 00:35:52,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 00:35:52,131 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 72 flow. Second operand 3 states and 351 transitions. [2023-08-27 00:35:52,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 142 flow [2023-08-27 00:35:52,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:52,132 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 87 flow [2023-08-27 00:35:52,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-27 00:35:52,133 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -6 predicate places. [2023-08-27 00:35:52,133 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 87 flow [2023-08-27 00:35:52,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 00:35:52,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:52,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:35:52,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:35:52,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:52,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash 735589, now seen corresponding path program 1 times [2023-08-27 00:35:52,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:52,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414776257] [2023-08-27 00:35:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:52,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:52,209 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 00:35:52,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:52,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414776257] [2023-08-27 00:35:52,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414776257] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:52,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896615055] [2023-08-27 00:35:52,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:52,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:52,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:52,213 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 00:35:52,251 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 00:35:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:52,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:35:52,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:52,353 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 00:35:52,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:52,366 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 00:35:52,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896615055] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:52,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:52,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-27 00:35:52,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339188500] [2023-08-27 00:35:52,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:52,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:35:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:35:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:35:52,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 266 [2023-08-27 00:35:52,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 87 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:52,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:52,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 266 [2023-08-27 00:35:52,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:52,491 INFO L124 PetriNetUnfolderBase]: 509/758 cut-off events. [2023-08-27 00:35:52,491 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:35:52,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 758 events. 509/758 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 3512 event pairs, 280 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 1495. Up to 747 conditions per place. [2023-08-27 00:35:52,497 INFO L140 encePairwiseOnDemand]: 262/266 looper letters, 29 selfloop transitions, 9 changer transitions 0/40 dead transitions. [2023-08-27 00:35:52,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 187 flow [2023-08-27 00:35:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:35:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:35:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 677 transitions. [2023-08-27 00:35:52,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4241854636591479 [2023-08-27 00:35:52,499 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 677 transitions. [2023-08-27 00:35:52,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 677 transitions. [2023-08-27 00:35:52,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:52,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 677 transitions. [2023-08-27 00:35:52,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 states 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 00:35:52,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states 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 00:35:52,506 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states 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 00:35:52,506 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 87 flow. Second operand 6 states and 677 transitions. [2023-08-27 00:35:52,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 187 flow [2023-08-27 00:35:52,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 182 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:52,508 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 143 flow [2023-08-27 00:35:52,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-08-27 00:35:52,509 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-08-27 00:35:52,509 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 143 flow [2023-08-27 00:35:52,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:52,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:52,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 00:35:52,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:52,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:52,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:52,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:52,716 INFO L85 PathProgramCache]: Analyzing trace with hash 706712568, now seen corresponding path program 1 times [2023-08-27 00:35:52,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:52,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164833401] [2023-08-27 00:35:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:52,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:52,807 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 00:35:52,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:52,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164833401] [2023-08-27 00:35:52,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164833401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:52,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:52,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:35:52,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970810994] [2023-08-27 00:35:52,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:52,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:35:52,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:52,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:35:52,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:35:52,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:35:52,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:52,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:52,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:35:52,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:52,985 INFO L124 PetriNetUnfolderBase]: 519/857 cut-off events. [2023-08-27 00:35:52,985 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 00:35:52,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 857 events. 519/857 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 4329 event pairs, 305 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 1721. Up to 638 conditions per place. [2023-08-27 00:35:52,991 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 65 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2023-08-27 00:35:52,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 350 flow [2023-08-27 00:35:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:35:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:35:52,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 524 transitions. [2023-08-27 00:35:52,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39398496240601505 [2023-08-27 00:35:52,993 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 524 transitions. [2023-08-27 00:35:52,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 524 transitions. [2023-08-27 00:35:52,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:52,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 524 transitions. [2023-08-27 00:35:52,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 00:35:52,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:35:52,997 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:35:52,997 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 143 flow. Second operand 5 states and 524 transitions. [2023-08-27 00:35:52,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 350 flow [2023-08-27 00:35:52,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 329 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:53,000 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 155 flow [2023-08-27 00:35:53,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-27 00:35:53,000 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-08-27 00:35:53,001 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 155 flow [2023-08-27 00:35:53,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:53,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:53,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:35:53,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 00:35:53,001 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:53,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:53,002 INFO L85 PathProgramCache]: Analyzing trace with hash 439612329, now seen corresponding path program 1 times [2023-08-27 00:35:53,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:53,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571541027] [2023-08-27 00:35:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:53,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:53,330 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 00:35:53,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:53,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571541027] [2023-08-27 00:35:53,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571541027] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:53,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951020372] [2023-08-27 00:35:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:53,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:53,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:53,341 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 00:35:53,368 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 00:35:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:53,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 00:35:53,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:53,495 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:35:53,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:35:53,535 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:35:53,562 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 00:35:53,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:53,602 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_88 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_88) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-08-27 00:35:53,613 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:53,614 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-08-27 00:35:53,622 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:53,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-08-27 00:35:53,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-27 00:35:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 00:35:53,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951020372] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:53,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:53,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-27 00:35:53,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28518764] [2023-08-27 00:35:53,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:53,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:35:53,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:53,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:35:53,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2023-08-27 00:35:53,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 00:35:53,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 155 flow. Second operand has 13 states, 13 states have (on average 87.3076923076923) internal successors, (1135), 13 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states 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 00:35:53,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:53,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 00:35:53,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:54,060 INFO L124 PetriNetUnfolderBase]: 713/1182 cut-off events. [2023-08-27 00:35:54,060 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-08-27 00:35:54,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 1182 events. 713/1182 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 6823 event pairs, 243 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 2612. Up to 778 conditions per place. [2023-08-27 00:35:54,068 INFO L140 encePairwiseOnDemand]: 252/266 looper letters, 52 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2023-08-27 00:35:54,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 76 transitions, 399 flow [2023-08-27 00:35:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:35:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:35:54,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 758 transitions. [2023-08-27 00:35:54,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35620300751879697 [2023-08-27 00:35:54,071 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 758 transitions. [2023-08-27 00:35:54,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 758 transitions. [2023-08-27 00:35:54,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:54,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 758 transitions. [2023-08-27 00:35:54,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 00:35:54,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states 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 00:35:54,077 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states 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 00:35:54,077 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 155 flow. Second operand 8 states and 758 transitions. [2023-08-27 00:35:54,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 76 transitions, 399 flow [2023-08-27 00:35:54,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:54,082 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 287 flow [2023-08-27 00:35:54,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=287, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2023-08-27 00:35:54,084 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-08-27 00:35:54,084 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 287 flow [2023-08-27 00:35:54,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 87.3076923076923) internal successors, (1135), 13 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states 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 00:35:54,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:54,085 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 00:35:54,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:54,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:54,290 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:54,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:54,291 INFO L85 PathProgramCache]: Analyzing trace with hash 439824281, now seen corresponding path program 2 times [2023-08-27 00:35:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:54,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898997560] [2023-08-27 00:35:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:54,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:54,377 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 00:35:54,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:54,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898997560] [2023-08-27 00:35:54,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898997560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:54,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516214271] [2023-08-27 00:35:54,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:35:54,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:54,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:54,379 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 00:35:54,382 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 00:35:54,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:35:54,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:35:54,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:35:54,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:54,483 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 00:35:54,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:54,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516214271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:54,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:54,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 00:35:54,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633972007] [2023-08-27 00:35:54,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:54,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:54,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:54,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:54,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:35:54,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 266 [2023-08-27 00:35:54,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 00:35:54,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:54,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 266 [2023-08-27 00:35:54,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:54,627 INFO L124 PetriNetUnfolderBase]: 745/1192 cut-off events. [2023-08-27 00:35:54,627 INFO L125 PetriNetUnfolderBase]: For 379/417 co-relation queries the response was YES. [2023-08-27 00:35:54,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1192 events. 745/1192 cut-off events. For 379/417 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 6701 event pairs, 394 based on Foata normal form. 39/592 useless extension candidates. Maximal degree in co-relation 3099. Up to 1176 conditions per place. [2023-08-27 00:35:54,635 INFO L140 encePairwiseOnDemand]: 264/266 looper letters, 52 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-27 00:35:54,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 383 flow [2023-08-27 00:35:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-27 00:35:54,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398496240601504 [2023-08-27 00:35:54,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-27 00:35:54,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-27 00:35:54,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:54,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-27 00:35:54,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 00:35:54,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 00:35:54,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 00:35:54,640 INFO L175 Difference]: Start difference. First operand has 54 places, 58 transitions, 287 flow. Second operand 3 states and 351 transitions. [2023-08-27 00:35:54,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 383 flow [2023-08-27 00:35:54,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 352 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-27 00:35:54,643 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 248 flow [2023-08-27 00:35:54,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2023-08-27 00:35:54,644 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2023-08-27 00:35:54,644 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 248 flow [2023-08-27 00:35:54,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 00:35:54,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:54,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:35:54,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:54,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:54,849 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:54,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:54,850 INFO L85 PathProgramCache]: Analyzing trace with hash 439612332, now seen corresponding path program 1 times [2023-08-27 00:35:54,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:54,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557439304] [2023-08-27 00:35:54,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:54,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:54,923 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 00:35:54,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:54,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557439304] [2023-08-27 00:35:54,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557439304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:54,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:54,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:54,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480532461] [2023-08-27 00:35:54,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:54,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:54,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:54,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 266 [2023-08-27 00:35:54,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 00:35:54,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:54,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 266 [2023-08-27 00:35:54,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:55,094 INFO L124 PetriNetUnfolderBase]: 872/1446 cut-off events. [2023-08-27 00:35:55,095 INFO L125 PetriNetUnfolderBase]: For 383/439 co-relation queries the response was YES. [2023-08-27 00:35:55,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3576 conditions, 1446 events. 872/1446 cut-off events. For 383/439 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 8466 event pairs, 133 based on Foata normal form. 58/790 useless extension candidates. Maximal degree in co-relation 3563. Up to 1176 conditions per place. [2023-08-27 00:35:55,103 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 63 selfloop transitions, 9 changer transitions 1/77 dead transitions. [2023-08-27 00:35:55,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 464 flow [2023-08-27 00:35:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-08-27 00:35:55,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48120300751879697 [2023-08-27 00:35:55,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-08-27 00:35:55,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-08-27 00:35:55,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:55,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-08-27 00:35:55,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 00:35:55,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 00:35:55,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 00:35:55,108 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 248 flow. Second operand 3 states and 384 transitions. [2023-08-27 00:35:55,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 464 flow [2023-08-27 00:35:55,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 463 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:55,113 INFO L231 Difference]: Finished difference. Result has 52 places, 62 transitions, 312 flow [2023-08-27 00:35:55,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=52, PETRI_TRANSITIONS=62} [2023-08-27 00:35:55,114 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2023-08-27 00:35:55,117 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 62 transitions, 312 flow [2023-08-27 00:35:55,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 00:35:55,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:55,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:35:55,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 00:35:55,118 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:55,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:55,118 INFO L85 PathProgramCache]: Analyzing trace with hash 439612335, now seen corresponding path program 1 times [2023-08-27 00:35:55,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:55,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892421026] [2023-08-27 00:35:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:55,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:55,374 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 00:35:55,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:55,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892421026] [2023-08-27 00:35:55,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892421026] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:55,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10205528] [2023-08-27 00:35:55,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:55,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:55,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:55,376 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 00:35:55,379 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 00:35:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:55,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 00:35:55,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:55,489 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:35:55,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:35:55,522 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:35:55,538 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 00:35:55,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:55,590 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:55,591 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-27 00:35:55,598 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:55,598 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-08-27 00:35:55,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-27 00:35:55,623 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 00:35:55,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10205528] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:55,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:55,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-27 00:35:55,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934257345] [2023-08-27 00:35:55,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:55,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:35:55,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:55,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:35:55,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=100, Unknown=1, NotChecked=0, Total=132 [2023-08-27 00:35:55,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 00:35:55,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 62 transitions, 312 flow. Second operand has 12 states, 12 states have (on average 87.25) internal successors, (1047), 12 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:55,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:55,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 00:35:55,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:55,976 INFO L124 PetriNetUnfolderBase]: 945/1556 cut-off events. [2023-08-27 00:35:55,976 INFO L125 PetriNetUnfolderBase]: For 808/808 co-relation queries the response was YES. [2023-08-27 00:35:55,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4623 conditions, 1556 events. 945/1556 cut-off events. For 808/808 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 8989 event pairs, 314 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 4608. Up to 1069 conditions per place. [2023-08-27 00:35:55,986 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 59 selfloop transitions, 26 changer transitions 0/86 dead transitions. [2023-08-27 00:35:55,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 86 transitions, 588 flow [2023-08-27 00:35:55,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:35:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:35:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 752 transitions. [2023-08-27 00:35:55,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3533834586466165 [2023-08-27 00:35:55,989 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 752 transitions. [2023-08-27 00:35:55,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 752 transitions. [2023-08-27 00:35:55,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:55,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 752 transitions. [2023-08-27 00:35:55,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.0) internal successors, (752), 8 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 00:35:55,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states 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 00:35:55,994 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states 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 00:35:55,994 INFO L175 Difference]: Start difference. First operand has 52 places, 62 transitions, 312 flow. Second operand 8 states and 752 transitions. [2023-08-27 00:35:55,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 86 transitions, 588 flow [2023-08-27 00:35:55,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 86 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:56,000 INFO L231 Difference]: Finished difference. Result has 58 places, 64 transitions, 366 flow [2023-08-27 00:35:56,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=58, PETRI_TRANSITIONS=64} [2023-08-27 00:35:56,000 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2023-08-27 00:35:56,000 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 64 transitions, 366 flow [2023-08-27 00:35:56,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.25) internal successors, (1047), 12 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:56,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:56,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:56,011 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 00:35:56,206 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 00:35:56,206 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:56,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:56,207 INFO L85 PathProgramCache]: Analyzing trace with hash 550583461, now seen corresponding path program 1 times [2023-08-27 00:35:56,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:56,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866917389] [2023-08-27 00:35:56,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:56,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:56,281 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 00:35:56,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:56,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866917389] [2023-08-27 00:35:56,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866917389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:56,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:56,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:35:56,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990252277] [2023-08-27 00:35:56,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:56,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:35:56,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:56,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:35:56,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:35:56,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:35:56,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 64 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 00:35:56,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:56,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:35:56,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:56,476 INFO L124 PetriNetUnfolderBase]: 788/1300 cut-off events. [2023-08-27 00:35:56,476 INFO L125 PetriNetUnfolderBase]: For 1780/1804 co-relation queries the response was YES. [2023-08-27 00:35:56,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4245 conditions, 1300 events. 788/1300 cut-off events. For 1780/1804 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 6976 event pairs, 399 based on Foata normal form. 24/927 useless extension candidates. Maximal degree in co-relation 4229. Up to 1258 conditions per place. [2023-08-27 00:35:56,484 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 56 selfloop transitions, 2 changer transitions 16/76 dead transitions. [2023-08-27 00:35:56,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 545 flow [2023-08-27 00:35:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:35:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:35:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 504 transitions. [2023-08-27 00:35:56,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37894736842105264 [2023-08-27 00:35:56,487 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 504 transitions. [2023-08-27 00:35:56,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 504 transitions. [2023-08-27 00:35:56,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:56,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 504 transitions. [2023-08-27 00:35:56,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:56,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:35:56,491 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:35:56,491 INFO L175 Difference]: Start difference. First operand has 58 places, 64 transitions, 366 flow. Second operand 5 states and 504 transitions. [2023-08-27 00:35:56,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 545 flow [2023-08-27 00:35:56,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 533 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:35:56,498 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 344 flow [2023-08-27 00:35:56,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-08-27 00:35:56,499 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2023-08-27 00:35:56,499 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 344 flow [2023-08-27 00:35:56,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 00:35:56,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:56,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:56,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 00:35:56,500 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:56,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:56,501 INFO L85 PathProgramCache]: Analyzing trace with hash 743228662, now seen corresponding path program 1 times [2023-08-27 00:35:56,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:56,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109013146] [2023-08-27 00:35:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:56,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:56,763 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 00:35:56,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:56,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109013146] [2023-08-27 00:35:56,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109013146] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:56,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130088158] [2023-08-27 00:35:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:56,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:56,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:56,765 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 00:35:56,767 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 00:35:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:56,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 00:35:56,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:56,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:35:56,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:35:56,907 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:35:56,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:35:56,931 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:35:56,938 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 00:35:56,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:57,010 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:57,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-08-27 00:35:57,018 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:57,018 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-08-27 00:35:57,034 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-08-27 00:35:57,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-08-27 00:35:57,065 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 00:35:57,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130088158] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:57,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:57,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 00:35:57,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670702470] [2023-08-27 00:35:57,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:57,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 00:35:57,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:57,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 00:35:57,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=160, Unknown=6, NotChecked=0, Total=210 [2023-08-27 00:35:57,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:35:57,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 344 flow. Second operand has 15 states, 15 states have (on average 84.26666666666667) internal successors, (1264), 15 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 00:35:57,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:57,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:35:57,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:57,385 INFO L124 PetriNetUnfolderBase]: 904/1487 cut-off events. [2023-08-27 00:35:57,386 INFO L125 PetriNetUnfolderBase]: For 1384/1384 co-relation queries the response was YES. [2023-08-27 00:35:57,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4962 conditions, 1487 events. 904/1487 cut-off events. For 1384/1384 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 8804 event pairs, 202 based on Foata normal form. 87/1024 useless extension candidates. Maximal degree in co-relation 4943. Up to 624 conditions per place. [2023-08-27 00:35:57,395 INFO L140 encePairwiseOnDemand]: 253/266 looper letters, 63 selfloop transitions, 26 changer transitions 0/90 dead transitions. [2023-08-27 00:35:57,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 658 flow [2023-08-27 00:35:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:35:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:35:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 645 transitions. [2023-08-27 00:35:57,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3464017185821697 [2023-08-27 00:35:57,398 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 645 transitions. [2023-08-27 00:35:57,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 645 transitions. [2023-08-27 00:35:57,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:57,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 645 transitions. [2023-08-27 00:35:57,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 states 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 00:35:57,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:35:57,402 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:35:57,403 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 344 flow. Second operand 7 states and 645 transitions. [2023-08-27 00:35:57,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 658 flow [2023-08-27 00:35:57,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 90 transitions, 594 flow, removed 30 selfloop flow, removed 6 redundant places. [2023-08-27 00:35:57,412 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 439 flow [2023-08-27 00:35:57,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=439, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2023-08-27 00:35:57,412 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-08-27 00:35:57,412 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 439 flow [2023-08-27 00:35:57,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.26666666666667) internal successors, (1264), 15 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 00:35:57,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:57,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:57,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-27 00:35:57,617 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 00:35:57,618 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:57,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:57,618 INFO L85 PathProgramCache]: Analyzing trace with hash 743228668, now seen corresponding path program 1 times [2023-08-27 00:35:57,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:57,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036772662] [2023-08-27 00:35:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:57,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:57,853 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 00:35:57,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:57,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036772662] [2023-08-27 00:35:57,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036772662] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:57,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338277725] [2023-08-27 00:35:57,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:57,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:57,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:57,855 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 00:35:57,857 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 00:35:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:57,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 00:35:57,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:57,977 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:35:58,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:35:58,009 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:35:58,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:35:58,037 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:35:58,046 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 00:35:58,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:58,075 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_249 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_249) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-08-27 00:35:58,110 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:58,111 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 00:35:58,118 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:58,118 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-08-27 00:35:58,126 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 00:35:58,132 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-08-27 00:35:58,159 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 00:35:58,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338277725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:58,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:58,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 00:35:58,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012828350] [2023-08-27 00:35:58,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:58,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 00:35:58,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:58,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 00:35:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-08-27 00:35:58,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:35:58,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 439 flow. Second operand has 15 states, 15 states have (on average 84.26666666666667) internal successors, (1264), 15 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 00:35:58,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:58,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:35:58,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:58,522 INFO L124 PetriNetUnfolderBase]: 857/1411 cut-off events. [2023-08-27 00:35:58,523 INFO L125 PetriNetUnfolderBase]: For 2268/2268 co-relation queries the response was YES. [2023-08-27 00:35:58,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4763 conditions, 1411 events. 857/1411 cut-off events. For 2268/2268 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 8074 event pairs, 264 based on Foata normal form. 29/912 useless extension candidates. Maximal degree in co-relation 4746. Up to 624 conditions per place. [2023-08-27 00:35:58,531 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 62 selfloop transitions, 26 changer transitions 0/89 dead transitions. [2023-08-27 00:35:58,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 89 transitions, 687 flow [2023-08-27 00:35:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:35:58,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:35:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 642 transitions. [2023-08-27 00:35:58,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3447905477980666 [2023-08-27 00:35:58,534 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 642 transitions. [2023-08-27 00:35:58,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 642 transitions. [2023-08-27 00:35:58,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:58,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 642 transitions. [2023-08-27 00:35:58,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:58,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:35:58,538 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:35:58,538 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 439 flow. Second operand 7 states and 642 transitions. [2023-08-27 00:35:58,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 89 transitions, 687 flow [2023-08-27 00:35:58,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 89 transitions, 679 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:35:58,543 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 477 flow [2023-08-27 00:35:58,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2023-08-27 00:35:58,544 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2023-08-27 00:35:58,544 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 477 flow [2023-08-27 00:35:58,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.26666666666667) internal successors, (1264), 15 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 00:35:58,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:58,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:58,551 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 00:35:58,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:58,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:58,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:58,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1565294425, now seen corresponding path program 1 times [2023-08-27 00:35:58,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:58,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73420125] [2023-08-27 00:35:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:58,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:58,976 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 00:35:58,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:58,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73420125] [2023-08-27 00:35:58,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73420125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:58,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922931235] [2023-08-27 00:35:58,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:58,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:58,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:58,978 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:58,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 00:35:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:59,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 00:35:59,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:59,091 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:35:59,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:35:59,117 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:35:59,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:35:59,143 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:35:59,153 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 00:35:59,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:59,188 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_283 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_283) c_~A~0.base) c_~A~0.offset) 9223372039002259456)) is different from false [2023-08-27 00:35:59,223 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:59,224 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-08-27 00:35:59,231 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:59,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-08-27 00:35:59,236 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-08-27 00:35:59,240 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2023-08-27 00:35:59,296 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 00:35:59,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922931235] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:59,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:59,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 00:35:59,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150890627] [2023-08-27 00:35:59,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:59,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 00:35:59,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:59,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 00:35:59,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-08-27 00:35:59,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:35:59,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 477 flow. Second operand has 15 states, 15 states have (on average 84.4) internal successors, (1266), 15 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 00:35:59,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:59,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:35:59,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:59,645 INFO L124 PetriNetUnfolderBase]: 921/1614 cut-off events. [2023-08-27 00:35:59,646 INFO L125 PetriNetUnfolderBase]: For 4059/4189 co-relation queries the response was YES. [2023-08-27 00:35:59,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5834 conditions, 1614 events. 921/1614 cut-off events. For 4059/4189 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9487 event pairs, 170 based on Foata normal form. 130/1244 useless extension candidates. Maximal degree in co-relation 5817. Up to 679 conditions per place. [2023-08-27 00:35:59,655 INFO L140 encePairwiseOnDemand]: 253/266 looper letters, 87 selfloop transitions, 15 changer transitions 0/104 dead transitions. [2023-08-27 00:35:59,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 104 transitions, 1013 flow [2023-08-27 00:35:59,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:35:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:35:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 645 transitions. [2023-08-27 00:35:59,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3464017185821697 [2023-08-27 00:35:59,658 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 645 transitions. [2023-08-27 00:35:59,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 645 transitions. [2023-08-27 00:35:59,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:59,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 645 transitions. [2023-08-27 00:35:59,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 states 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 00:35:59,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:35:59,662 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:35:59,662 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 477 flow. Second operand 7 states and 645 transitions. [2023-08-27 00:35:59,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 104 transitions, 1013 flow [2023-08-27 00:35:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 990 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:35:59,669 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 533 flow [2023-08-27 00:35:59,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=533, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2023-08-27 00:35:59,669 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2023-08-27 00:35:59,670 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 533 flow [2023-08-27 00:35:59,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.4) internal successors, (1266), 15 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 00:35:59,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:59,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:59,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:59,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:59,878 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:35:59,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:59,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1565294426, now seen corresponding path program 1 times [2023-08-27 00:35:59,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:59,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118089289] [2023-08-27 00:35:59,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:59,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:00,112 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 00:36:00,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:00,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118089289] [2023-08-27 00:36:00,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118089289] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:00,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172628972] [2023-08-27 00:36:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:00,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:00,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:00,114 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:00,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 00:36:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:00,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 00:36:00,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:00,240 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:00,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:00,269 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:00,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:00,294 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:00,305 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 00:36:00,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:00,382 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:00,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 00:36:00,390 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:00,390 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-08-27 00:36:00,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 00:36:00,400 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-08-27 00:36:00,429 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 00:36:00,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172628972] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:00,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:00,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 00:36:00,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675355436] [2023-08-27 00:36:00,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:00,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 00:36:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 00:36:00,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=162, Unknown=4, NotChecked=0, Total=210 [2023-08-27 00:36:00,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:36:00,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 533 flow. Second operand has 15 states, 15 states have (on average 84.4) internal successors, (1266), 15 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 00:36:00,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:00,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:36:00,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:00,782 INFO L124 PetriNetUnfolderBase]: 865/1514 cut-off events. [2023-08-27 00:36:00,782 INFO L125 PetriNetUnfolderBase]: For 3756/3878 co-relation queries the response was YES. [2023-08-27 00:36:00,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1514 events. 865/1514 cut-off events. For 3756/3878 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8852 event pairs, 172 based on Foata normal form. 122/1318 useless extension candidates. Maximal degree in co-relation 6437. Up to 659 conditions per place. [2023-08-27 00:36:00,791 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 86 selfloop transitions, 15 changer transitions 0/103 dead transitions. [2023-08-27 00:36:00,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 1047 flow [2023-08-27 00:36:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:36:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:36:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 642 transitions. [2023-08-27 00:36:00,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3447905477980666 [2023-08-27 00:36:00,794 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 642 transitions. [2023-08-27 00:36:00,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 642 transitions. [2023-08-27 00:36:00,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:00,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 642 transitions. [2023-08-27 00:36:00,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:00,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:36:00,798 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:36:00,798 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 533 flow. Second operand 7 states and 642 transitions. [2023-08-27 00:36:00,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 1047 flow [2023-08-27 00:36:00,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 103 transitions, 1039 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:36:00,806 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 551 flow [2023-08-27 00:36:00,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=551, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2023-08-27 00:36:00,806 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2023-08-27 00:36:00,806 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 551 flow [2023-08-27 00:36:00,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.4) internal successors, (1266), 15 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 00:36:00,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:00,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:00,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:01,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-27 00:36:01,012 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:01,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:01,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1560679161, now seen corresponding path program 1 times [2023-08-27 00:36:01,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:01,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57192099] [2023-08-27 00:36:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:01,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:01,073 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 00:36:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57192099] [2023-08-27 00:36:01,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57192099] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:01,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339915338] [2023-08-27 00:36:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:01,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:01,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:01,075 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:01,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 00:36:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:01,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 00:36:01,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:01,224 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 00:36:01,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:01,274 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 00:36:01,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339915338] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:01,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:01,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 00:36:01,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588816416] [2023-08-27 00:36:01,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:01,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 00:36:01,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 00:36:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-27 00:36:01,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:36:01,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 551 flow. Second operand has 14 states, 14 states have (on average 92.5) internal successors, (1295), 14 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states 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 00:36:01,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:01,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:36:01,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:01,727 INFO L124 PetriNetUnfolderBase]: 1172/2054 cut-off events. [2023-08-27 00:36:01,728 INFO L125 PetriNetUnfolderBase]: For 5952/6181 co-relation queries the response was YES. [2023-08-27 00:36:01,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9147 conditions, 2054 events. 1172/2054 cut-off events. For 5952/6181 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 12535 event pairs, 675 based on Foata normal form. 340/2106 useless extension candidates. Maximal degree in co-relation 9128. Up to 1473 conditions per place. [2023-08-27 00:36:01,739 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 121 selfloop transitions, 14 changer transitions 0/136 dead transitions. [2023-08-27 00:36:01,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 136 transitions, 1296 flow [2023-08-27 00:36:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:36:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:36:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 723 transitions. [2023-08-27 00:36:01,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882921589688507 [2023-08-27 00:36:01,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 723 transitions. [2023-08-27 00:36:01,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 723 transitions. [2023-08-27 00:36:01,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:01,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 723 transitions. [2023-08-27 00:36:01,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.28571428571429) internal successors, (723), 7 states have internal predecessors, (723), 0 states have call successors, (0), 0 states 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 00:36:01,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:36:01,747 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:36:01,747 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 551 flow. Second operand 7 states and 723 transitions. [2023-08-27 00:36:01,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 136 transitions, 1296 flow [2023-08-27 00:36:01,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 1277 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:36:01,755 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 738 flow [2023-08-27 00:36:01,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=738, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2023-08-27 00:36:01,756 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2023-08-27 00:36:01,756 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 738 flow [2023-08-27 00:36:01,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.5) internal successors, (1295), 14 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states 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 00:36:01,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:01,757 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:01,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:01,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 00:36:01,961 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:01,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:01,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1343019323, now seen corresponding path program 2 times [2023-08-27 00:36:01,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:01,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794979312] [2023-08-27 00:36:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:01,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:02,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:02,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794979312] [2023-08-27 00:36:02,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794979312] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:02,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229449980] [2023-08-27 00:36:02,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:36:02,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:02,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:02,184 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:02,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 00:36:02,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:36:02,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:02,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 00:36:02,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:02,353 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:02,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:02,378 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:02,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:02,485 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:02,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-08-27 00:36:02,492 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:02,492 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-08-27 00:36:02,504 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-08-27 00:36:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:02,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229449980] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:02,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:02,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 00:36:02,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858936904] [2023-08-27 00:36:02,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:02,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 00:36:02,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:02,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 00:36:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=253, Unknown=2, NotChecked=0, Total=306 [2023-08-27 00:36:02,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 00:36:02,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 738 flow. Second operand has 18 states, 18 states have (on average 87.33333333333333) internal successors, (1572), 18 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:02,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:02,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 00:36:02,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:03,114 INFO L124 PetriNetUnfolderBase]: 1178/2064 cut-off events. [2023-08-27 00:36:03,114 INFO L125 PetriNetUnfolderBase]: For 6439/6672 co-relation queries the response was YES. [2023-08-27 00:36:03,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9734 conditions, 2064 events. 1178/2064 cut-off events. For 6439/6672 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 12568 event pairs, 423 based on Foata normal form. 235/2007 useless extension candidates. Maximal degree in co-relation 9712. Up to 1304 conditions per place. [2023-08-27 00:36:03,127 INFO L140 encePairwiseOnDemand]: 252/266 looper letters, 71 selfloop transitions, 43 changer transitions 0/115 dead transitions. [2023-08-27 00:36:03,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 1243 flow [2023-08-27 00:36:03,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:36:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:36:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1109 transitions. [2023-08-27 00:36:03,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3474310776942356 [2023-08-27 00:36:03,131 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1109 transitions. [2023-08-27 00:36:03,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1109 transitions. [2023-08-27 00:36:03,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:03,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1109 transitions. [2023-08-27 00:36:03,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.41666666666667) internal successors, (1109), 12 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states 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 00:36:03,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 266.0) internal successors, (3458), 13 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states 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 00:36:03,138 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 266.0) internal successors, (3458), 13 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states 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 00:36:03,138 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 738 flow. Second operand 12 states and 1109 transitions. [2023-08-27 00:36:03,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 1243 flow [2023-08-27 00:36:03,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 115 transitions, 1232 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 00:36:03,151 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 980 flow [2023-08-27 00:36:03,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=980, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-08-27 00:36:03,151 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2023-08-27 00:36:03,151 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 980 flow [2023-08-27 00:36:03,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 87.33333333333333) internal successors, (1572), 18 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:03,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:03,152 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:03,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:03,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 00:36:03,357 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:03,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:03,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1343019329, now seen corresponding path program 1 times [2023-08-27 00:36:03,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:03,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561438525] [2023-08-27 00:36:03,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:03,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:03,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561438525] [2023-08-27 00:36:03,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561438525] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703061935] [2023-08-27 00:36:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:03,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:03,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:03,630 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:03,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 00:36:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:03,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 00:36:03,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:03,770 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:03,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:03,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:36:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:03,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:03,878 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:03,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-27 00:36:03,891 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:03,892 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-08-27 00:36:03,894 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-27 00:36:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703061935] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:03,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:03,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 00:36:03,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358142731] [2023-08-27 00:36:03,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:03,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 00:36:03,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:03,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 00:36:03,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-08-27 00:36:03,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 00:36:03,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 980 flow. Second operand has 17 states, 17 states have (on average 87.29411764705883) internal successors, (1484), 17 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states 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 00:36:03,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:03,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 00:36:03,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:04,448 INFO L124 PetriNetUnfolderBase]: 1177/2063 cut-off events. [2023-08-27 00:36:04,448 INFO L125 PetriNetUnfolderBase]: For 7332/7561 co-relation queries the response was YES. [2023-08-27 00:36:04,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10177 conditions, 2063 events. 1177/2063 cut-off events. For 7332/7561 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 12565 event pairs, 401 based on Foata normal form. 230/2001 useless extension candidates. Maximal degree in co-relation 10153. Up to 1303 conditions per place. [2023-08-27 00:36:04,461 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 70 selfloop transitions, 42 changer transitions 0/113 dead transitions. [2023-08-27 00:36:04,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 113 transitions, 1342 flow [2023-08-27 00:36:04,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 00:36:04,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 00:36:04,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1019 transitions. [2023-08-27 00:36:04,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.348257006151743 [2023-08-27 00:36:04,465 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1019 transitions. [2023-08-27 00:36:04,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1019 transitions. [2023-08-27 00:36:04,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:04,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1019 transitions. [2023-08-27 00:36:04,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.63636363636364) internal successors, (1019), 11 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states 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 00:36:04,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 00:36:04,472 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 00:36:04,472 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 980 flow. Second operand 11 states and 1019 transitions. [2023-08-27 00:36:04,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 113 transitions, 1342 flow [2023-08-27 00:36:04,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 113 transitions, 1320 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 00:36:04,495 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 1020 flow [2023-08-27 00:36:04,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1020, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2023-08-27 00:36:04,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2023-08-27 00:36:04,496 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 1020 flow [2023-08-27 00:36:04,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 87.29411764705883) internal successors, (1484), 17 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states 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 L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:04,497 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:04,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:04,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 00:36:04,702 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:04,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:04,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1343019326, now seen corresponding path program 1 times [2023-08-27 00:36:04,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:04,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581817185] [2023-08-27 00:36:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:04,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:04,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:04,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581817185] [2023-08-27 00:36:04,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581817185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:04,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:04,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:36:04,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134135712] [2023-08-27 00:36:04,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:04,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:36:04,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:36:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:36:04,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 266 [2023-08-27 00:36:04,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 1020 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 00:36:04,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:04,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 266 [2023-08-27 00:36:04,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:05,138 INFO L124 PetriNetUnfolderBase]: 1365/2469 cut-off events. [2023-08-27 00:36:05,139 INFO L125 PetriNetUnfolderBase]: For 9545/10004 co-relation queries the response was YES. [2023-08-27 00:36:05,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12140 conditions, 2469 events. 1365/2469 cut-off events. For 9545/10004 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 16317 event pairs, 174 based on Foata normal form. 459/2641 useless extension candidates. Maximal degree in co-relation 12115. Up to 1083 conditions per place. [2023-08-27 00:36:05,154 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 118 selfloop transitions, 26 changer transitions 1/150 dead transitions. [2023-08-27 00:36:05,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 150 transitions, 1759 flow [2023-08-27 00:36:05,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:36:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:36:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2023-08-27 00:36:05,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48045112781954885 [2023-08-27 00:36:05,157 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2023-08-27 00:36:05,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2023-08-27 00:36:05,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:05,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2023-08-27 00:36:05,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 00:36:05,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:36:05,163 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:36:05,163 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 1020 flow. Second operand 5 states and 639 transitions. [2023-08-27 00:36:05,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 150 transitions, 1759 flow [2023-08-27 00:36:05,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 1738 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 00:36:05,190 INFO L231 Difference]: Finished difference. Result has 93 places, 107 transitions, 1336 flow [2023-08-27 00:36:05,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1336, PETRI_PLACES=93, PETRI_TRANSITIONS=107} [2023-08-27 00:36:05,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2023-08-27 00:36:05,191 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 1336 flow [2023-08-27 00:36:05,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 00:36:05,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:05,192 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:05,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 00:36:05,192 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:05,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:05,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1343019327, now seen corresponding path program 1 times [2023-08-27 00:36:05,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:05,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379633113] [2023-08-27 00:36:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:05,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:05,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:05,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379633113] [2023-08-27 00:36:05,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379633113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:05,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:05,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:36:05,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926482937] [2023-08-27 00:36:05,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:05,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:36:05,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:36:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:36:05,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 266 [2023-08-27 00:36:05,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 107 transitions, 1336 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 00:36:05,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:05,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 266 [2023-08-27 00:36:05,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:05,593 INFO L124 PetriNetUnfolderBase]: 1285/2382 cut-off events. [2023-08-27 00:36:05,593 INFO L125 PetriNetUnfolderBase]: For 15206/15686 co-relation queries the response was YES. [2023-08-27 00:36:05,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13193 conditions, 2382 events. 1285/2382 cut-off events. For 15206/15686 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 15984 event pairs, 129 based on Foata normal form. 573/2782 useless extension candidates. Maximal degree in co-relation 13163. Up to 962 conditions per place. [2023-08-27 00:36:05,610 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 128 selfloop transitions, 39 changer transitions 1/173 dead transitions. [2023-08-27 00:36:05,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 173 transitions, 2299 flow [2023-08-27 00:36:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:36:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:36:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2023-08-27 00:36:05,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48045112781954885 [2023-08-27 00:36:05,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2023-08-27 00:36:05,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2023-08-27 00:36:05,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:05,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2023-08-27 00:36:05,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 00:36:05,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:36:05,616 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:36:05,616 INFO L175 Difference]: Start difference. First operand has 93 places, 107 transitions, 1336 flow. Second operand 5 states and 639 transitions. [2023-08-27 00:36:05,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 173 transitions, 2299 flow [2023-08-27 00:36:05,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 173 transitions, 2299 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 00:36:05,652 INFO L231 Difference]: Finished difference. Result has 101 places, 130 transitions, 1901 flow [2023-08-27 00:36:05,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1901, PETRI_PLACES=101, PETRI_TRANSITIONS=130} [2023-08-27 00:36:05,653 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2023-08-27 00:36:05,653 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 130 transitions, 1901 flow [2023-08-27 00:36:05,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 00:36:05,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:05,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:05,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 00:36:05,654 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:05,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1009415712, now seen corresponding path program 1 times [2023-08-27 00:36:05,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:05,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766874860] [2023-08-27 00:36:05,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:05,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:05,717 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 00:36:05,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:05,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766874860] [2023-08-27 00:36:05,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766874860] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:05,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857985628] [2023-08-27 00:36:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:05,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:05,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:05,721 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:05,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 00:36:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:05,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 00:36:05,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:05,871 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 00:36:05,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:36:05,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857985628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:05,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:36:05,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2023-08-27 00:36:05,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912355847] [2023-08-27 00:36:05,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:05,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:36:05,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:05,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:36:05,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-27 00:36:05,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 266 [2023-08-27 00:36:05,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 130 transitions, 1901 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 00:36:05,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:05,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 266 [2023-08-27 00:36:05,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:06,193 INFO L124 PetriNetUnfolderBase]: 1112/2061 cut-off events. [2023-08-27 00:36:06,193 INFO L125 PetriNetUnfolderBase]: For 19370/19787 co-relation queries the response was YES. [2023-08-27 00:36:06,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12441 conditions, 2061 events. 1112/2061 cut-off events. For 19370/19787 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 13356 event pairs, 116 based on Foata normal form. 517/2421 useless extension candidates. Maximal degree in co-relation 12405. Up to 1167 conditions per place. [2023-08-27 00:36:06,205 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 113 selfloop transitions, 33 changer transitions 1/152 dead transitions. [2023-08-27 00:36:06,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 152 transitions, 2171 flow [2023-08-27 00:36:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:36:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:36:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 623 transitions. [2023-08-27 00:36:06,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2023-08-27 00:36:06,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 623 transitions. [2023-08-27 00:36:06,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 623 transitions. [2023-08-27 00:36:06,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:06,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 623 transitions. [2023-08-27 00:36:06,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 00:36:06,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:36:06,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:36:06,219 INFO L175 Difference]: Start difference. First operand has 101 places, 130 transitions, 1901 flow. Second operand 5 states and 623 transitions. [2023-08-27 00:36:06,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 152 transitions, 2171 flow [2023-08-27 00:36:06,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 152 transitions, 2151 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 00:36:06,259 INFO L231 Difference]: Finished difference. Result has 101 places, 113 transitions, 1609 flow [2023-08-27 00:36:06,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1609, PETRI_PLACES=101, PETRI_TRANSITIONS=113} [2023-08-27 00:36:06,260 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2023-08-27 00:36:06,260 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 113 transitions, 1609 flow [2023-08-27 00:36:06,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 00:36:06,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:06,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:06,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:06,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:06,465 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:06,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1009415708, now seen corresponding path program 1 times [2023-08-27 00:36:06,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:06,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415970675] [2023-08-27 00:36:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:06,555 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 00:36:06,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:06,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415970675] [2023-08-27 00:36:06,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415970675] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:06,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272873031] [2023-08-27 00:36:06,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:06,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:06,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:06,561 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:06,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 00:36:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:06,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 00:36:06,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:06,726 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 00:36:06,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:06,771 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 00:36:06,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272873031] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:06,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:06,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 00:36:06,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125436506] [2023-08-27 00:36:06,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:06,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 00:36:06,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 00:36:06,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-27 00:36:06,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:36:06,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 113 transitions, 1609 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states 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 00:36:06,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:06,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:36:06,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:07,087 INFO L124 PetriNetUnfolderBase]: 979/1811 cut-off events. [2023-08-27 00:36:07,087 INFO L125 PetriNetUnfolderBase]: For 15551/15722 co-relation queries the response was YES. [2023-08-27 00:36:07,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10970 conditions, 1811 events. 979/1811 cut-off events. For 15551/15722 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11016 event pairs, 570 based on Foata normal form. 261/1939 useless extension candidates. Maximal degree in co-relation 10934. Up to 1548 conditions per place. [2023-08-27 00:36:07,095 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 132 selfloop transitions, 10 changer transitions 0/146 dead transitions. [2023-08-27 00:36:07,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 146 transitions, 2202 flow [2023-08-27 00:36:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:36:07,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:36:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 702 transitions. [2023-08-27 00:36:07,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3770139634801289 [2023-08-27 00:36:07,100 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 702 transitions. [2023-08-27 00:36:07,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 702 transitions. [2023-08-27 00:36:07,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:07,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 702 transitions. [2023-08-27 00:36:07,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 0 states have call successors, (0), 0 states 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 00:36:07,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:36:07,105 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states 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 00:36:07,105 INFO L175 Difference]: Start difference. First operand has 101 places, 113 transitions, 1609 flow. Second operand 7 states and 702 transitions. [2023-08-27 00:36:07,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 146 transitions, 2202 flow [2023-08-27 00:36:07,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 146 transitions, 2202 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 00:36:07,142 INFO L231 Difference]: Finished difference. Result has 110 places, 117 transitions, 1683 flow [2023-08-27 00:36:07,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1683, PETRI_PLACES=110, PETRI_TRANSITIONS=117} [2023-08-27 00:36:07,143 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2023-08-27 00:36:07,143 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 117 transitions, 1683 flow [2023-08-27 00:36:07,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states 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 00:36:07,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:07,143 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:07,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:07,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-08-27 00:36:07,348 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:07,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1457859252, now seen corresponding path program 1 times [2023-08-27 00:36:07,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:07,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522585789] [2023-08-27 00:36:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:07,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:07,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:07,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522585789] [2023-08-27 00:36:07,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522585789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:07,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973605400] [2023-08-27 00:36:07,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:07,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:07,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:07,671 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:07,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 00:36:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:07,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 00:36:07,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:07,835 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:07,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:07,864 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:36:07,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:07,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:36:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:07,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:08,030 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:08,030 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 00:36:08,036 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:08,036 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2023-08-27 00:36:08,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-08-27 00:36:08,045 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-27 00:36:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:08,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973605400] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:08,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:08,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 00:36:08,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180206121] [2023-08-27 00:36:08,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:08,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 00:36:08,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:08,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 00:36:08,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=316, Unknown=4, NotChecked=0, Total=380 [2023-08-27 00:36:08,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:36:08,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 117 transitions, 1683 flow. Second operand has 20 states, 20 states have (on average 84.3) internal successors, (1686), 20 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states 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 00:36:08,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:08,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:36:08,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:08,759 INFO L124 PetriNetUnfolderBase]: 1233/2230 cut-off events. [2023-08-27 00:36:08,759 INFO L125 PetriNetUnfolderBase]: For 22814/22975 co-relation queries the response was YES. [2023-08-27 00:36:08,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14458 conditions, 2230 events. 1233/2230 cut-off events. For 22814/22975 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13560 event pairs, 381 based on Foata normal form. 262/2325 useless extension candidates. Maximal degree in co-relation 14417. Up to 755 conditions per place. [2023-08-27 00:36:08,769 INFO L140 encePairwiseOnDemand]: 253/266 looper letters, 150 selfloop transitions, 57 changer transitions 0/209 dead transitions. [2023-08-27 00:36:08,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 209 transitions, 3121 flow [2023-08-27 00:36:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 00:36:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 00:36:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1023 transitions. [2023-08-27 00:36:08,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34962406015037595 [2023-08-27 00:36:08,772 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1023 transitions. [2023-08-27 00:36:08,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1023 transitions. [2023-08-27 00:36:08,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:08,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1023 transitions. [2023-08-27 00:36:08,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states 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 00:36:08,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 00:36:08,777 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 00:36:08,778 INFO L175 Difference]: Start difference. First operand has 110 places, 117 transitions, 1683 flow. Second operand 11 states and 1023 transitions. [2023-08-27 00:36:08,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 209 transitions, 3121 flow [2023-08-27 00:36:08,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 209 transitions, 3110 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 00:36:08,818 INFO L231 Difference]: Finished difference. Result has 119 places, 131 transitions, 2129 flow [2023-08-27 00:36:08,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1674, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2129, PETRI_PLACES=119, PETRI_TRANSITIONS=131} [2023-08-27 00:36:08,818 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2023-08-27 00:36:08,818 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 131 transitions, 2129 flow [2023-08-27 00:36:08,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 84.3) internal successors, (1686), 20 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states 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 00:36:08,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:08,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:08,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:09,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:09,023 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:09,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:09,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1457859258, now seen corresponding path program 1 times [2023-08-27 00:36:09,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:09,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767080287] [2023-08-27 00:36:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:09,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:09,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767080287] [2023-08-27 00:36:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767080287] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281359570] [2023-08-27 00:36:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:09,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:09,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:09,321 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:09,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 00:36:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:09,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 00:36:09,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:09,485 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:09,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:09,511 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:09,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:09,547 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:09,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:09,622 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_575) c_~A~0.base) (+ c_~A~0.offset 4)) 9223372039002259456))) is different from false [2023-08-27 00:36:09,655 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:09,655 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 00:36:09,689 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:09,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 00:36:09,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 00:36:09,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 00:36:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:09,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281359570] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:09,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:09,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-27 00:36:09,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599316772] [2023-08-27 00:36:09,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:09,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 00:36:09,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:09,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 00:36:09,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=321, Unknown=1, NotChecked=36, Total=420 [2023-08-27 00:36:09,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:36:09,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 131 transitions, 2129 flow. Second operand has 21 states, 21 states have (on average 84.33333333333333) internal successors, (1771), 21 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states 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 00:36:09,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:09,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:36:09,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:10,540 INFO L124 PetriNetUnfolderBase]: 1177/2137 cut-off events. [2023-08-27 00:36:10,540 INFO L125 PetriNetUnfolderBase]: For 26979/27124 co-relation queries the response was YES. [2023-08-27 00:36:10,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14797 conditions, 2137 events. 1177/2137 cut-off events. For 26979/27124 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 12895 event pairs, 404 based on Foata normal form. 184/2158 useless extension candidates. Maximal degree in co-relation 14754. Up to 739 conditions per place. [2023-08-27 00:36:10,552 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 173 selfloop transitions, 57 changer transitions 0/232 dead transitions. [2023-08-27 00:36:10,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 232 transitions, 3577 flow [2023-08-27 00:36:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 00:36:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 00:36:10,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1206 transitions. [2023-08-27 00:36:10,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34875650665124347 [2023-08-27 00:36:10,559 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1206 transitions. [2023-08-27 00:36:10,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1206 transitions. [2023-08-27 00:36:10,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:10,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1206 transitions. [2023-08-27 00:36:10,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 92.76923076923077) internal successors, (1206), 13 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 00:36:10,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states 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 00:36:10,564 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states 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 00:36:10,565 INFO L175 Difference]: Start difference. First operand has 119 places, 131 transitions, 2129 flow. Second operand 13 states and 1206 transitions. [2023-08-27 00:36:10,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 232 transitions, 3577 flow [2023-08-27 00:36:10,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 232 transitions, 3390 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-08-27 00:36:10,609 INFO L231 Difference]: Finished difference. Result has 122 places, 130 transitions, 2043 flow [2023-08-27 00:36:10,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2043, PETRI_PLACES=122, PETRI_TRANSITIONS=130} [2023-08-27 00:36:10,610 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2023-08-27 00:36:10,610 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 130 transitions, 2043 flow [2023-08-27 00:36:10,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 84.33333333333333) internal successors, (1771), 21 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states 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 00:36:10,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:10,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:10,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:10,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:10,817 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:10,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:10,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1226967652, now seen corresponding path program 1 times [2023-08-27 00:36:10,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:10,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037460319] [2023-08-27 00:36:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:10,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:10,857 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 00:36:10,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:10,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037460319] [2023-08-27 00:36:10,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037460319] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:10,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:10,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:36:10,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609880416] [2023-08-27 00:36:10,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:10,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:36:10,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:10,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:36:10,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:36:10,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 266 [2023-08-27 00:36:10,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 2043 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 00:36:10,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:10,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 266 [2023-08-27 00:36:10,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:11,142 INFO L124 PetriNetUnfolderBase]: 958/1721 cut-off events. [2023-08-27 00:36:11,143 INFO L125 PetriNetUnfolderBase]: For 22019/22324 co-relation queries the response was YES. [2023-08-27 00:36:11,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11531 conditions, 1721 events. 958/1721 cut-off events. For 22019/22324 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10078 event pairs, 86 based on Foata normal form. 393/1971 useless extension candidates. Maximal degree in co-relation 11490. Up to 793 conditions per place. [2023-08-27 00:36:11,153 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 118 selfloop transitions, 28 changer transitions 1/153 dead transitions. [2023-08-27 00:36:11,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 153 transitions, 2340 flow [2023-08-27 00:36:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:36:11,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:36:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 621 transitions. [2023-08-27 00:36:11,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46691729323308273 [2023-08-27 00:36:11,154 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 621 transitions. [2023-08-27 00:36:11,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 621 transitions. [2023-08-27 00:36:11,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:11,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 621 transitions. [2023-08-27 00:36:11,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.2) internal successors, (621), 5 states have internal predecessors, (621), 0 states have call successors, (0), 0 states 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 00:36:11,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:36:11,157 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:36:11,157 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 2043 flow. Second operand 5 states and 621 transitions. [2023-08-27 00:36:11,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 153 transitions, 2340 flow [2023-08-27 00:36:11,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 153 transitions, 2138 flow, removed 18 selfloop flow, removed 15 redundant places. [2023-08-27 00:36:11,189 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 1450 flow [2023-08-27 00:36:11,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1450, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2023-08-27 00:36:11,190 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 67 predicate places. [2023-08-27 00:36:11,190 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 1450 flow [2023-08-27 00:36:11,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 00:36:11,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:11,190 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:11,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 00:36:11,190 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:11,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2011052311, now seen corresponding path program 1 times [2023-08-27 00:36:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:11,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289737428] [2023-08-27 00:36:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:11,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:11,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289737428] [2023-08-27 00:36:11,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289737428] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:11,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885779728] [2023-08-27 00:36:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:11,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:11,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:11,431 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:11,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 00:36:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:11,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 00:36:11,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:11,609 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:11,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:11,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:11,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:11,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:11,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:11,742 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_628 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_628) c_~A~0.base) (+ c_~A~0.offset 4)) 4294967296))) is different from false [2023-08-27 00:36:11,776 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:11,776 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 00:36:11,783 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:11,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 00:36:11,790 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 00:36:11,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 00:36:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:11,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885779728] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:11,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:11,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 00:36:11,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427789899] [2023-08-27 00:36:11,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:11,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 00:36:11,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:11,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 00:36:11,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=4, NotChecked=34, Total=380 [2023-08-27 00:36:11,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:36:11,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 1450 flow. Second operand has 20 states, 20 states have (on average 84.4) internal successors, (1688), 20 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 00:36:11,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:11,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:36:11,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:12,457 INFO L124 PetriNetUnfolderBase]: 1379/2386 cut-off events. [2023-08-27 00:36:12,458 INFO L125 PetriNetUnfolderBase]: For 23278/23435 co-relation queries the response was YES. [2023-08-27 00:36:12,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14938 conditions, 2386 events. 1379/2386 cut-off events. For 23278/23435 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13324 event pairs, 326 based on Foata normal form. 289/2526 useless extension candidates. Maximal degree in co-relation 14903. Up to 842 conditions per place. [2023-08-27 00:36:12,472 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 177 selfloop transitions, 26 changer transitions 0/207 dead transitions. [2023-08-27 00:36:12,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 207 transitions, 3216 flow [2023-08-27 00:36:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 00:36:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 00:36:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1013 transitions. [2023-08-27 00:36:12,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3462064251537936 [2023-08-27 00:36:12,474 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1013 transitions. [2023-08-27 00:36:12,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1013 transitions. [2023-08-27 00:36:12,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:12,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1013 transitions. [2023-08-27 00:36:12,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.0909090909091) internal successors, (1013), 11 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states 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 00:36:12,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 00:36:12,479 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 00:36:12,479 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 1450 flow. Second operand 11 states and 1013 transitions. [2023-08-27 00:36:12,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 207 transitions, 3216 flow [2023-08-27 00:36:12,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 207 transitions, 3118 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:36:12,507 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 1542 flow [2023-08-27 00:36:12,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1542, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2023-08-27 00:36:12,508 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2023-08-27 00:36:12,508 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 1542 flow [2023-08-27 00:36:12,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 84.4) internal successors, (1688), 20 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 00:36:12,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:12,509 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:12,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:12,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-27 00:36:12,715 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:12,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:12,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2011052312, now seen corresponding path program 2 times [2023-08-27 00:36:12,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:12,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265046189] [2023-08-27 00:36:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:12,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:13,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:13,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265046189] [2023-08-27 00:36:13,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265046189] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:13,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130985377] [2023-08-27 00:36:13,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:36:13,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:13,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:13,019 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:13,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 00:36:13,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:36:13,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:13,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 00:36:13,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:13,188 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 00:36:13,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:13,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:13,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:13,241 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:13,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:13,356 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_666 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_666) c_~A~0.base) (+ c_~A~0.offset 4)) 9223372039002259456)) is different from false [2023-08-27 00:36:13,400 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:13,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 00:36:13,408 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:13,408 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 00:36:13,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 00:36:13,423 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 00:36:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:13,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130985377] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:13,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:13,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-08-27 00:36:13,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829147558] [2023-08-27 00:36:13,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:13,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 00:36:13,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:13,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 00:36:13,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=4, NotChecked=40, Total=506 [2023-08-27 00:36:13,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:36:13,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 1542 flow. Second operand has 23 states, 23 states have (on average 84.43478260869566) internal successors, (1942), 23 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states 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 00:36:13,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:13,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:36:13,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:14,389 INFO L124 PetriNetUnfolderBase]: 1287/2228 cut-off events. [2023-08-27 00:36:14,390 INFO L125 PetriNetUnfolderBase]: For 21802/21949 co-relation queries the response was YES. [2023-08-27 00:36:14,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14740 conditions, 2228 events. 1287/2228 cut-off events. For 21802/21949 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12434 event pairs, 302 based on Foata normal form. 213/2298 useless extension candidates. Maximal degree in co-relation 14703. Up to 842 conditions per place. [2023-08-27 00:36:14,401 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 199 selfloop transitions, 26 changer transitions 0/229 dead transitions. [2023-08-27 00:36:14,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 229 transitions, 3601 flow [2023-08-27 00:36:14,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:36:14,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:36:14,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1103 transitions. [2023-08-27 00:36:14,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3455513784461153 [2023-08-27 00:36:14,404 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1103 transitions. [2023-08-27 00:36:14,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1103 transitions. [2023-08-27 00:36:14,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:14,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1103 transitions. [2023-08-27 00:36:14,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.91666666666667) internal successors, (1103), 12 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states 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 00:36:14,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 266.0) internal successors, (3458), 13 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states 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 00:36:14,409 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 266.0) internal successors, (3458), 13 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states 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 00:36:14,409 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 1542 flow. Second operand 12 states and 1103 transitions. [2023-08-27 00:36:14,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 229 transitions, 3601 flow [2023-08-27 00:36:14,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 229 transitions, 3557 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-27 00:36:14,436 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 1540 flow [2023-08-27 00:36:14,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1540, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2023-08-27 00:36:14,436 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2023-08-27 00:36:14,437 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 1540 flow [2023-08-27 00:36:14,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 84.43478260869566) internal successors, (1942), 23 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states 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 00:36:14,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:14,437 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 00:36:14,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:14,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:14,638 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:14,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:14,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2143606927, now seen corresponding path program 3 times [2023-08-27 00:36:14,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:14,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136004820] [2023-08-27 00:36:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:14,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:14,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:14,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136004820] [2023-08-27 00:36:14,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136004820] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:14,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044729717] [2023-08-27 00:36:14,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:36:14,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:14,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:14,733 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:14,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 00:36:14,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 00:36:14,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:14,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 00:36:14,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:14,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:15,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044729717] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:15,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:15,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 00:36:15,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43200399] [2023-08-27 00:36:15,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:15,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 00:36:15,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:15,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 00:36:15,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-08-27 00:36:15,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:36:15,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 1540 flow. Second operand has 19 states, 19 states have (on average 92.47368421052632) internal successors, (1757), 19 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states 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 00:36:15,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:15,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:36:15,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:15,556 INFO L124 PetriNetUnfolderBase]: 1847/3188 cut-off events. [2023-08-27 00:36:15,556 INFO L125 PetriNetUnfolderBase]: For 33109/33374 co-relation queries the response was YES. [2023-08-27 00:36:15,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21304 conditions, 3188 events. 1847/3188 cut-off events. For 33109/33374 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18896 event pairs, 809 based on Foata normal form. 397/3400 useless extension candidates. Maximal degree in co-relation 21268. Up to 1935 conditions per place. [2023-08-27 00:36:15,571 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 191 selfloop transitions, 37 changer transitions 0/230 dead transitions. [2023-08-27 00:36:15,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 230 transitions, 3470 flow [2023-08-27 00:36:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 00:36:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 00:36:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 906 transitions. [2023-08-27 00:36:15,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37844611528822053 [2023-08-27 00:36:15,573 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 906 transitions. [2023-08-27 00:36:15,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 906 transitions. [2023-08-27 00:36:15,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:15,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 906 transitions. [2023-08-27 00:36:15,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 100.66666666666667) internal successors, (906), 9 states have internal predecessors, (906), 0 states have call successors, (0), 0 states 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 00:36:15,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states 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 00:36:15,577 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states 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 00:36:15,577 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 1540 flow. Second operand 9 states and 906 transitions. [2023-08-27 00:36:15,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 230 transitions, 3470 flow [2023-08-27 00:36:15,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 230 transitions, 3370 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-27 00:36:15,614 INFO L231 Difference]: Finished difference. Result has 124 places, 130 transitions, 2027 flow [2023-08-27 00:36:15,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2027, PETRI_PLACES=124, PETRI_TRANSITIONS=130} [2023-08-27 00:36:15,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2023-08-27 00:36:15,615 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 130 transitions, 2027 flow [2023-08-27 00:36:15,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 92.47368421052632) internal successors, (1757), 19 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states 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 00:36:15,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:15,616 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 00:36:15,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:15,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:15,822 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:15,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:15,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1296588477, now seen corresponding path program 4 times [2023-08-27 00:36:15,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:15,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166939203] [2023-08-27 00:36:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:15,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:16,097 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 00:36:16,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:16,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166939203] [2023-08-27 00:36:16,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166939203] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:16,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191801575] [2023-08-27 00:36:16,098 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:36:16,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:16,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:16,101 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:16,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 00:36:16,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:36:16,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:16,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 00:36:16,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:16,268 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:16,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:16,295 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:16,359 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 00:36:16,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:16,435 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_733 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_733) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 00:36:16,442 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:16,442 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-08-27 00:36:16,448 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:16,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-08-27 00:36:16,451 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-08-27 00:36:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-08-27 00:36:16,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191801575] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:16,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:16,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-27 00:36:16,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055496992] [2023-08-27 00:36:16,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:16,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 00:36:16,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:16,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 00:36:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=440, Unknown=1, NotChecked=42, Total=552 [2023-08-27 00:36:16,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 00:36:16,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 130 transitions, 2027 flow. Second operand has 24 states, 24 states have (on average 87.375) internal successors, (2097), 24 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states 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 00:36:16,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:16,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 00:36:16,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:17,257 INFO L124 PetriNetUnfolderBase]: 1851/3196 cut-off events. [2023-08-27 00:36:17,257 INFO L125 PetriNetUnfolderBase]: For 34590/34799 co-relation queries the response was YES. [2023-08-27 00:36:17,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22022 conditions, 3196 events. 1851/3196 cut-off events. For 34590/34799 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 18672 event pairs, 656 based on Foata normal form. 211/3196 useless extension candidates. Maximal degree in co-relation 21982. Up to 2329 conditions per place. [2023-08-27 00:36:17,272 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 113 selfloop transitions, 62 changer transitions 0/177 dead transitions. [2023-08-27 00:36:17,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 177 transitions, 2950 flow [2023-08-27 00:36:17,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 00:36:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 00:36:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1364 transitions. [2023-08-27 00:36:17,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3418546365914787 [2023-08-27 00:36:17,275 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1364 transitions. [2023-08-27 00:36:17,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1364 transitions. [2023-08-27 00:36:17,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:17,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1364 transitions. [2023-08-27 00:36:17,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 90.93333333333334) internal successors, (1364), 15 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states 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 00:36:17,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:17,281 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:17,281 INFO L175 Difference]: Start difference. First operand has 124 places, 130 transitions, 2027 flow. Second operand 15 states and 1364 transitions. [2023-08-27 00:36:17,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 177 transitions, 2950 flow [2023-08-27 00:36:17,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 177 transitions, 2930 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-27 00:36:17,336 INFO L231 Difference]: Finished difference. Result has 138 places, 144 transitions, 2353 flow [2023-08-27 00:36:17,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2353, PETRI_PLACES=138, PETRI_TRANSITIONS=144} [2023-08-27 00:36:17,337 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2023-08-27 00:36:17,337 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 144 transitions, 2353 flow [2023-08-27 00:36:17,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 87.375) internal successors, (2097), 24 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states 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 00:36:17,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:17,338 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 00:36:17,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:17,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:17,542 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:17,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:17,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1296588483, now seen corresponding path program 2 times [2023-08-27 00:36:17,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:17,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075385105] [2023-08-27 00:36:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:17,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:17,783 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 00:36:17,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:17,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075385105] [2023-08-27 00:36:17,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075385105] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:17,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537687406] [2023-08-27 00:36:17,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:36:17,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:17,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:17,785 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:17,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 00:36:17,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:36:17,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:17,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-27 00:36:17,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:17,999 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:18,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:18,034 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:36:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:18,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:18,313 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:18,313 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-08-27 00:36:18,320 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:18,321 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-08-27 00:36:18,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-08-27 00:36:18,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:18,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537687406] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:18,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:18,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-08-27 00:36:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997835972] [2023-08-27 00:36:18,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:18,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 00:36:18,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:18,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 00:36:18,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2023-08-27 00:36:18,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 266 [2023-08-27 00:36:18,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 144 transitions, 2353 flow. Second operand has 26 states, 26 states have (on average 78.38461538461539) internal successors, (2038), 26 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states 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 00:36:18,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:18,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 266 [2023-08-27 00:36:18,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:22,148 INFO L124 PetriNetUnfolderBase]: 2822/4762 cut-off events. [2023-08-27 00:36:22,149 INFO L125 PetriNetUnfolderBase]: For 55280/55669 co-relation queries the response was YES. [2023-08-27 00:36:22,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34150 conditions, 4762 events. 2822/4762 cut-off events. For 55280/55669 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 29137 event pairs, 782 based on Foata normal form. 437/4885 useless extension candidates. Maximal degree in co-relation 34106. Up to 1466 conditions per place. [2023-08-27 00:36:22,191 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 273 selfloop transitions, 141 changer transitions 0/416 dead transitions. [2023-08-27 00:36:22,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 416 transitions, 6799 flow [2023-08-27 00:36:22,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-27 00:36:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-27 00:36:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3624 transitions. [2023-08-27 00:36:22,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30963773069036227 [2023-08-27 00:36:22,198 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3624 transitions. [2023-08-27 00:36:22,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3624 transitions. [2023-08-27 00:36:22,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:22,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3624 transitions. [2023-08-27 00:36:22,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 82.36363636363636) internal successors, (3624), 44 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states 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 00:36:22,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 266.0) internal successors, (11970), 45 states have internal predecessors, (11970), 0 states have call successors, (0), 0 states 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 00:36:22,212 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 266.0) internal successors, (11970), 45 states have internal predecessors, (11970), 0 states have call successors, (0), 0 states 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 00:36:22,212 INFO L175 Difference]: Start difference. First operand has 138 places, 144 transitions, 2353 flow. Second operand 44 states and 3624 transitions. [2023-08-27 00:36:22,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 416 transitions, 6799 flow [2023-08-27 00:36:22,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 416 transitions, 6712 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-08-27 00:36:22,324 INFO L231 Difference]: Finished difference. Result has 186 places, 219 transitions, 3991 flow [2023-08-27 00:36:22,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3991, PETRI_PLACES=186, PETRI_TRANSITIONS=219} [2023-08-27 00:36:22,330 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2023-08-27 00:36:22,330 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 219 transitions, 3991 flow [2023-08-27 00:36:22,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.38461538461539) internal successors, (2038), 26 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states 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 00:36:22,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:22,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:22,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:22,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 00:36:22,537 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:22,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:22,537 INFO L85 PathProgramCache]: Analyzing trace with hash 114038251, now seen corresponding path program 3 times [2023-08-27 00:36:22,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:22,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078928913] [2023-08-27 00:36:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:22,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:22,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:22,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078928913] [2023-08-27 00:36:22,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078928913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:22,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860656629] [2023-08-27 00:36:22,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:36:22,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:22,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:22,625 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:22,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 00:36:22,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 00:36:22,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:22,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 00:36:22,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:22,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:22,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860656629] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:22,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:22,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 00:36:22,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514606932] [2023-08-27 00:36:22,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:22,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 00:36:22,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:22,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 00:36:22,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-08-27 00:36:22,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:36:22,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 219 transitions, 3991 flow. Second operand has 19 states, 19 states have (on average 92.57894736842105) internal successors, (1759), 19 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states 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 00:36:22,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:22,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:36:22,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:23,531 INFO L124 PetriNetUnfolderBase]: 2634/4445 cut-off events. [2023-08-27 00:36:23,531 INFO L125 PetriNetUnfolderBase]: For 69637/69819 co-relation queries the response was YES. [2023-08-27 00:36:23,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33797 conditions, 4445 events. 2634/4445 cut-off events. For 69637/69819 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 26299 event pairs, 1278 based on Foata normal form. 278/4603 useless extension candidates. Maximal degree in co-relation 33742. Up to 3621 conditions per place. [2023-08-27 00:36:23,563 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 257 selfloop transitions, 21 changer transitions 0/286 dead transitions. [2023-08-27 00:36:23,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 286 transitions, 5540 flow [2023-08-27 00:36:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 00:36:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 00:36:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 890 transitions. [2023-08-27 00:36:23,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717627401837928 [2023-08-27 00:36:23,564 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 890 transitions. [2023-08-27 00:36:23,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 890 transitions. [2023-08-27 00:36:23,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:23,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 890 transitions. [2023-08-27 00:36:23,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.88888888888889) internal successors, (890), 9 states have internal predecessors, (890), 0 states have call successors, (0), 0 states 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 00:36:23,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states 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 00:36:23,567 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states 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 00:36:23,567 INFO L175 Difference]: Start difference. First operand has 186 places, 219 transitions, 3991 flow. Second operand 9 states and 890 transitions. [2023-08-27 00:36:23,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 286 transitions, 5540 flow [2023-08-27 00:36:23,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 286 transitions, 5157 flow, removed 57 selfloop flow, removed 15 redundant places. [2023-08-27 00:36:23,705 INFO L231 Difference]: Finished difference. Result has 183 places, 228 transitions, 3827 flow [2023-08-27 00:36:23,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=3608, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3827, PETRI_PLACES=183, PETRI_TRANSITIONS=228} [2023-08-27 00:36:23,706 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2023-08-27 00:36:23,706 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 228 transitions, 3827 flow [2023-08-27 00:36:23,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 92.57894736842105) internal successors, (1759), 19 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states 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 00:36:23,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:23,707 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:23,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:23,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 00:36:23,909 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:23,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:23,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1571553546, now seen corresponding path program 2 times [2023-08-27 00:36:23,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:23,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127515012] [2023-08-27 00:36:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:23,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:24,209 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 00:36:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127515012] [2023-08-27 00:36:24,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127515012] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737925948] [2023-08-27 00:36:24,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:36:24,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:24,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:24,213 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:24,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 00:36:24,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:36:24,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:24,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 00:36:24,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:24,430 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 00:36:24,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:24,458 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:24,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:24,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:24,573 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 00:36:24,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:24,650 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_846 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_846) c_~A~0.base) (+ c_~A~0.offset 8)) 4294967296)) is different from false [2023-08-27 00:36:24,708 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:24,709 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 00:36:24,715 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:24,715 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 00:36:24,719 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 00:36:24,723 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 00:36:24,834 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 00:36:24,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737925948] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:24,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:24,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-27 00:36:24,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931125842] [2023-08-27 00:36:24,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:24,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 00:36:24,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 00:36:24,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=668, Unknown=5, NotChecked=52, Total=812 [2023-08-27 00:36:24,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:36:24,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 228 transitions, 3827 flow. Second operand has 29 states, 29 states have (on average 84.34482758620689) internal successors, (2446), 29 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states 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 00:36:24,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:24,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:36:24,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:26,503 INFO L124 PetriNetUnfolderBase]: 3026/5075 cut-off events. [2023-08-27 00:36:26,503 INFO L125 PetriNetUnfolderBase]: For 94876/95326 co-relation queries the response was YES. [2023-08-27 00:36:26,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39889 conditions, 5075 events. 3026/5075 cut-off events. For 94876/95326 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 30893 event pairs, 799 based on Foata normal form. 808/5729 useless extension candidates. Maximal degree in co-relation 39832. Up to 1562 conditions per place. [2023-08-27 00:36:26,534 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 276 selfloop transitions, 113 changer transitions 0/392 dead transitions. [2023-08-27 00:36:26,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 392 transitions, 6684 flow [2023-08-27 00:36:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 00:36:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 00:36:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1381 transitions. [2023-08-27 00:36:26,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3461152882205514 [2023-08-27 00:36:26,536 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1381 transitions. [2023-08-27 00:36:26,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1381 transitions. [2023-08-27 00:36:26,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:26,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1381 transitions. [2023-08-27 00:36:26,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 92.06666666666666) internal successors, (1381), 15 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states 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 00:36:26,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:26,541 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:26,541 INFO L175 Difference]: Start difference. First operand has 183 places, 228 transitions, 3827 flow. Second operand 15 states and 1381 transitions. [2023-08-27 00:36:26,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 392 transitions, 6684 flow [2023-08-27 00:36:26,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 392 transitions, 6662 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-27 00:36:26,667 INFO L231 Difference]: Finished difference. Result has 195 places, 242 transitions, 4464 flow [2023-08-27 00:36:26,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=3811, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4464, PETRI_PLACES=195, PETRI_TRANSITIONS=242} [2023-08-27 00:36:26,667 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 154 predicate places. [2023-08-27 00:36:26,667 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 242 transitions, 4464 flow [2023-08-27 00:36:26,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 84.34482758620689) internal successors, (2446), 29 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states 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 00:36:26,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:26,668 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:26,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:26,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:26,874 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:26,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:26,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1571553552, now seen corresponding path program 2 times [2023-08-27 00:36:26,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:26,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779852823] [2023-08-27 00:36:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:26,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:27,189 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 00:36:27,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:27,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779852823] [2023-08-27 00:36:27,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779852823] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:27,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646968009] [2023-08-27 00:36:27,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:36:27,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:27,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:27,193 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:27,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 00:36:27,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:36:27,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:27,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-27 00:36:27,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:27,422 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:27,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:27,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:27,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:27,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:27,545 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 00:36:27,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:27,620 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_888 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_888) c_~A~0.base) (+ c_~A~0.offset 8))))) is different from false [2023-08-27 00:36:27,673 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:27,673 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 00:36:27,680 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:27,680 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-08-27 00:36:27,683 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-27 00:36:27,687 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 00:36:27,794 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 00:36:27,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646968009] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:27,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:27,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-27 00:36:27,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519336949] [2023-08-27 00:36:27,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:27,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 00:36:27,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:27,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 00:36:27,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=570, Unknown=2, NotChecked=48, Total=702 [2023-08-27 00:36:27,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:36:27,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 242 transitions, 4464 flow. Second operand has 27 states, 27 states have (on average 84.37037037037037) internal successors, (2278), 27 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states 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 00:36:27,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:27,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:36:27,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:29,233 INFO L124 PetriNetUnfolderBase]: 2890/4856 cut-off events. [2023-08-27 00:36:29,233 INFO L125 PetriNetUnfolderBase]: For 98443/98864 co-relation queries the response was YES. [2023-08-27 00:36:29,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40251 conditions, 4856 events. 2890/4856 cut-off events. For 98443/98864 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 28843 event pairs, 757 based on Foata normal form. 507/5217 useless extension candidates. Maximal degree in co-relation 40192. Up to 1526 conditions per place. [2023-08-27 00:36:29,270 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 278 selfloop transitions, 109 changer transitions 0/390 dead transitions. [2023-08-27 00:36:29,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 390 transitions, 6959 flow [2023-08-27 00:36:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 00:36:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 00:36:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1378 transitions. [2023-08-27 00:36:29,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34536340852130326 [2023-08-27 00:36:29,272 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1378 transitions. [2023-08-27 00:36:29,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1378 transitions. [2023-08-27 00:36:29,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:29,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1378 transitions. [2023-08-27 00:36:29,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.86666666666666) internal successors, (1378), 15 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states 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 00:36:29,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:29,275 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:29,275 INFO L175 Difference]: Start difference. First operand has 195 places, 242 transitions, 4464 flow. Second operand 15 states and 1378 transitions. [2023-08-27 00:36:29,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 390 transitions, 6959 flow [2023-08-27 00:36:29,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 390 transitions, 6801 flow, removed 19 selfloop flow, removed 8 redundant places. [2023-08-27 00:36:29,452 INFO L231 Difference]: Finished difference. Result has 201 places, 240 transitions, 4487 flow [2023-08-27 00:36:29,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=4269, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4487, PETRI_PLACES=201, PETRI_TRANSITIONS=240} [2023-08-27 00:36:29,452 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2023-08-27 00:36:29,452 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 240 transitions, 4487 flow [2023-08-27 00:36:29,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 84.37037037037037) internal successors, (2278), 27 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states 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 00:36:29,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:29,453 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:29,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:29,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:29,654 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:29,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2025795034, now seen corresponding path program 3 times [2023-08-27 00:36:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:29,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931876890] [2023-08-27 00:36:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:29,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:29,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:29,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931876890] [2023-08-27 00:36:29,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931876890] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:29,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510413872] [2023-08-27 00:36:29,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:36:29,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:29,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:29,773 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:29,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 00:36:29,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 00:36:29,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:29,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 00:36:29,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:30,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510413872] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:30,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-27 00:36:30,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014299890] [2023-08-27 00:36:30,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:30,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 00:36:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 00:36:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2023-08-27 00:36:30,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:36:30,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 240 transitions, 4487 flow. Second operand has 24 states, 24 states have (on average 92.54166666666667) internal successors, (2221), 24 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states 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 00:36:30,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:30,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:36:30,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:31,002 INFO L124 PetriNetUnfolderBase]: 3087/5224 cut-off events. [2023-08-27 00:36:31,002 INFO L125 PetriNetUnfolderBase]: For 107873/108353 co-relation queries the response was YES. [2023-08-27 00:36:31,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42282 conditions, 5224 events. 3087/5224 cut-off events. For 107873/108353 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 32015 event pairs, 1164 based on Foata normal form. 772/5830 useless extension candidates. Maximal degree in co-relation 42225. Up to 2391 conditions per place. [2023-08-27 00:36:31,040 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 289 selfloop transitions, 76 changer transitions 0/368 dead transitions. [2023-08-27 00:36:31,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 368 transitions, 6854 flow [2023-08-27 00:36:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 00:36:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 00:36:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1103 transitions. [2023-08-27 00:36:31,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37696514012303484 [2023-08-27 00:36:31,044 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1103 transitions. [2023-08-27 00:36:31,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1103 transitions. [2023-08-27 00:36:31,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:31,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1103 transitions. [2023-08-27 00:36:31,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 100.27272727272727) internal successors, (1103), 11 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states 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 00:36:31,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 00:36:31,048 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 00:36:31,048 INFO L175 Difference]: Start difference. First operand has 201 places, 240 transitions, 4487 flow. Second operand 11 states and 1103 transitions. [2023-08-27 00:36:31,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 368 transitions, 6854 flow [2023-08-27 00:36:31,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 368 transitions, 6628 flow, removed 18 selfloop flow, removed 13 redundant places. [2023-08-27 00:36:31,273 INFO L231 Difference]: Finished difference. Result has 201 places, 238 transitions, 4555 flow [2023-08-27 00:36:31,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4555, PETRI_PLACES=201, PETRI_TRANSITIONS=238} [2023-08-27 00:36:31,273 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2023-08-27 00:36:31,274 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 238 transitions, 4555 flow [2023-08-27 00:36:31,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 92.54166666666667) internal successors, (2221), 24 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states 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 00:36:31,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:31,274 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:31,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:31,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:31,477 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:31,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:31,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1211072928, now seen corresponding path program 2 times [2023-08-27 00:36:31,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:31,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303630614] [2023-08-27 00:36:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:31,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:31,775 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 00:36:31,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:31,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303630614] [2023-08-27 00:36:31,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303630614] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:31,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425847006] [2023-08-27 00:36:31,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:36:31,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:31,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:31,788 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:31,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 00:36:31,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:36:31,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:31,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 00:36:31,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:32,011 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 00:36:32,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:32,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 00:36:32,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:32,094 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 00:36:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:32,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:32,379 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_968 (Array Int Int)) (|v_thread2Thread1of1ForFork0_~i~1#1_91| Int)) (or (<= c_~N~0 |v_thread2Thread1of1ForFork0_~i~1#1_91|) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_968) c_~A~0.base) (+ c_~A~0.offset (* |v_thread2Thread1of1ForFork0_~i~1#1_91| 4))) 4294967296)) (< |v_thread2Thread1of1ForFork0_~i~1#1_91| 2))) is different from false [2023-08-27 00:36:32,457 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:32,457 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-08-27 00:36:32,465 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:32,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 81 [2023-08-27 00:36:32,470 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2023-08-27 00:36:32,476 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-08-27 00:36:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:32,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425847006] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:32,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:32,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-27 00:36:32,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505409644] [2023-08-27 00:36:32,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:32,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 00:36:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:32,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 00:36:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=664, Unknown=1, NotChecked=52, Total=812 [2023-08-27 00:36:32,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 266 [2023-08-27 00:36:32,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 238 transitions, 4555 flow. Second operand has 29 states, 29 states have (on average 75.44827586206897) internal successors, (2188), 29 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states 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 00:36:32,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:32,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 266 [2023-08-27 00:36:32,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:37,850 INFO L124 PetriNetUnfolderBase]: 5714/9298 cut-off events. [2023-08-27 00:36:37,851 INFO L125 PetriNetUnfolderBase]: For 186770/187096 co-relation queries the response was YES. [2023-08-27 00:36:37,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76327 conditions, 9298 events. 5714/9298 cut-off events. For 186770/187096 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 58441 event pairs, 668 based on Foata normal form. 694/9672 useless extension candidates. Maximal degree in co-relation 76266. Up to 2950 conditions per place. [2023-08-27 00:36:37,926 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 860 selfloop transitions, 82 changer transitions 2/953 dead transitions. [2023-08-27 00:36:37,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 953 transitions, 20901 flow [2023-08-27 00:36:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-27 00:36:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-27 00:36:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3076 transitions. [2023-08-27 00:36:37,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125381020117862 [2023-08-27 00:36:37,933 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3076 transitions. [2023-08-27 00:36:37,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3076 transitions. [2023-08-27 00:36:37,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:37,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3076 transitions. [2023-08-27 00:36:37,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 83.13513513513513) internal successors, (3076), 37 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states 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 00:36:37,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 266.0) internal successors, (10108), 38 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states 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 00:36:37,946 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 266.0) internal successors, (10108), 38 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states 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 00:36:37,946 INFO L175 Difference]: Start difference. First operand has 201 places, 238 transitions, 4555 flow. Second operand 37 states and 3076 transitions. [2023-08-27 00:36:37,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 953 transitions, 20901 flow [2023-08-27 00:36:38,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 953 transitions, 20744 flow, removed 72 selfloop flow, removed 5 redundant places. [2023-08-27 00:36:38,356 INFO L231 Difference]: Finished difference. Result has 238 places, 281 transitions, 5339 flow [2023-08-27 00:36:38,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=4524, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5339, PETRI_PLACES=238, PETRI_TRANSITIONS=281} [2023-08-27 00:36:38,356 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 197 predicate places. [2023-08-27 00:36:38,356 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 281 transitions, 5339 flow [2023-08-27 00:36:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 75.44827586206897) internal successors, (2188), 29 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states 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 00:36:38,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:38,357 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:38,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:38,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-27 00:36:38,563 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:38,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:38,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1211072927, now seen corresponding path program 4 times [2023-08-27 00:36:38,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:38,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120953147] [2023-08-27 00:36:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:38,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:38,874 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 00:36:38,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:38,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120953147] [2023-08-27 00:36:38,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120953147] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:38,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913470307] [2023-08-27 00:36:38,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:36:38,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:38,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:38,877 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:38,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 00:36:39,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:36:39,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:39,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 00:36:39,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:39,115 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 00:36:39,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:39,165 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:39,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:39,193 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:39,281 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 00:36:39,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:39,373 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1010 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1010) c_~A~0.base) (+ c_~A~0.offset 8)) 9223372039002259456)) is different from false [2023-08-27 00:36:39,444 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:39,444 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 00:36:39,451 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:39,452 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2023-08-27 00:36:39,457 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-27 00:36:39,460 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-08-27 00:36:39,548 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 00:36:39,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913470307] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:39,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:39,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-27 00:36:39,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832027797] [2023-08-27 00:36:39,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:39,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 00:36:39,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:39,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 00:36:39,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=667, Unknown=6, NotChecked=52, Total=812 [2023-08-27 00:36:39,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:36:39,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 281 transitions, 5339 flow. Second operand has 29 states, 29 states have (on average 84.44827586206897) internal successors, (2449), 29 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states 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 00:36:39,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:39,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:36:39,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:42,007 INFO L124 PetriNetUnfolderBase]: 5137/8471 cut-off events. [2023-08-27 00:36:42,007 INFO L125 PetriNetUnfolderBase]: For 198335/198616 co-relation queries the response was YES. [2023-08-27 00:36:42,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74696 conditions, 8471 events. 5137/8471 cut-off events. For 198335/198616 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 52841 event pairs, 955 based on Foata normal form. 887/9352 useless extension candidates. Maximal degree in co-relation 74629. Up to 3078 conditions per place. [2023-08-27 00:36:42,069 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 527 selfloop transitions, 74 changer transitions 0/610 dead transitions. [2023-08-27 00:36:42,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 610 transitions, 13885 flow [2023-08-27 00:36:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 00:36:42,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 00:36:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1379 transitions. [2023-08-27 00:36:42,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456140350877193 [2023-08-27 00:36:42,071 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1379 transitions. [2023-08-27 00:36:42,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1379 transitions. [2023-08-27 00:36:42,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:42,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1379 transitions. [2023-08-27 00:36:42,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.93333333333334) internal successors, (1379), 15 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states 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 00:36:42,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:42,074 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:42,075 INFO L175 Difference]: Start difference. First operand has 238 places, 281 transitions, 5339 flow. Second operand 15 states and 1379 transitions. [2023-08-27 00:36:42,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 610 transitions, 13885 flow [2023-08-27 00:36:42,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 610 transitions, 13423 flow, removed 51 selfloop flow, removed 20 redundant places. [2023-08-27 00:36:42,497 INFO L231 Difference]: Finished difference. Result has 234 places, 283 transitions, 5125 flow [2023-08-27 00:36:42,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=4877, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5125, PETRI_PLACES=234, PETRI_TRANSITIONS=283} [2023-08-27 00:36:42,498 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2023-08-27 00:36:42,498 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 283 transitions, 5125 flow [2023-08-27 00:36:42,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 84.44827586206897) internal successors, (2449), 29 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states 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 00:36:42,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:42,498 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 00:36:42,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:42,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-27 00:36:42,699 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:42,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:42,699 INFO L85 PathProgramCache]: Analyzing trace with hash -832653735, now seen corresponding path program 5 times [2023-08-27 00:36:42,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:42,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650586240] [2023-08-27 00:36:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:43,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:43,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650586240] [2023-08-27 00:36:43,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650586240] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:43,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799398202] [2023-08-27 00:36:43,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:36:43,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:43,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:43,058 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:43,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 00:36:43,195 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 00:36:43,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:43,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-27 00:36:43,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:43,268 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:43,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:43,300 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:43,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:43,486 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:43,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-08-27 00:36:43,494 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:43,494 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-08-27 00:36:43,497 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-08-27 00:36:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:43,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799398202] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:43,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:43,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-27 00:36:43,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939773938] [2023-08-27 00:36:43,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:43,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 00:36:43,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 00:36:43,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=778, Unknown=1, NotChecked=0, Total=870 [2023-08-27 00:36:43,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 00:36:43,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 283 transitions, 5125 flow. Second operand has 30 states, 30 states have (on average 87.4) internal successors, (2622), 30 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states 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 00:36:43,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:43,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 00:36:43,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:45,468 INFO L124 PetriNetUnfolderBase]: 5021/8269 cut-off events. [2023-08-27 00:36:45,468 INFO L125 PetriNetUnfolderBase]: For 166584/167006 co-relation queries the response was YES. [2023-08-27 00:36:45,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68314 conditions, 8269 events. 5021/8269 cut-off events. For 166584/167006 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 51779 event pairs, 1625 based on Foata normal form. 428/8621 useless extension candidates. Maximal degree in co-relation 68250. Up to 5896 conditions per place. [2023-08-27 00:36:45,531 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 249 selfloop transitions, 123 changer transitions 0/377 dead transitions. [2023-08-27 00:36:45,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 377 transitions, 7263 flow [2023-08-27 00:36:45,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 00:36:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 00:36:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1629 transitions. [2023-08-27 00:36:45,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34022556390977443 [2023-08-27 00:36:45,533 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1629 transitions. [2023-08-27 00:36:45,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1629 transitions. [2023-08-27 00:36:45,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:45,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1629 transitions. [2023-08-27 00:36:45,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.5) internal successors, (1629), 18 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states 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 00:36:45,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:36:45,539 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:36:45,539 INFO L175 Difference]: Start difference. First operand has 234 places, 283 transitions, 5125 flow. Second operand 18 states and 1629 transitions. [2023-08-27 00:36:45,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 377 transitions, 7263 flow [2023-08-27 00:36:45,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 377 transitions, 7099 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-27 00:36:45,931 INFO L231 Difference]: Finished difference. Result has 243 places, 297 transitions, 5592 flow [2023-08-27 00:36:45,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5027, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5592, PETRI_PLACES=243, PETRI_TRANSITIONS=297} [2023-08-27 00:36:45,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2023-08-27 00:36:45,931 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 297 transitions, 5592 flow [2023-08-27 00:36:45,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 87.4) internal successors, (2622), 30 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states 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 00:36:45,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:45,932 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:45,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-27 00:36:46,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-27 00:36:46,136 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:46,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:46,137 INFO L85 PathProgramCache]: Analyzing trace with hash -95027486, now seen corresponding path program 5 times [2023-08-27 00:36:46,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:46,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662820985] [2023-08-27 00:36:46,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:46,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:46,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662820985] [2023-08-27 00:36:46,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662820985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688031516] [2023-08-27 00:36:46,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:36:46,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:46,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:46,262 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:46,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 00:36:46,407 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 00:36:46,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:46,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 00:36:46,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:46,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688031516] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:46,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:46,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-27 00:36:46,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775875899] [2023-08-27 00:36:46,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 00:36:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 00:36:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2023-08-27 00:36:46,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:36:46,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 297 transitions, 5592 flow. Second operand has 24 states, 24 states have (on average 92.54166666666667) internal successors, (2221), 24 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states 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 00:36:46,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:46,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:36:46,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:48,128 INFO L124 PetriNetUnfolderBase]: 4794/7963 cut-off events. [2023-08-27 00:36:48,128 INFO L125 PetriNetUnfolderBase]: For 166201/166347 co-relation queries the response was YES. [2023-08-27 00:36:48,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65910 conditions, 7963 events. 4794/7963 cut-off events. For 166201/166347 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 48789 event pairs, 2017 based on Foata normal form. 278/8237 useless extension candidates. Maximal degree in co-relation 65844. Up to 5512 conditions per place. [2023-08-27 00:36:48,198 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 405 selfloop transitions, 35 changer transitions 0/449 dead transitions. [2023-08-27 00:36:48,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 449 transitions, 9821 flow [2023-08-27 00:36:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 00:36:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 00:36:48,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1082 transitions. [2023-08-27 00:36:48,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697881066302119 [2023-08-27 00:36:48,201 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1082 transitions. [2023-08-27 00:36:48,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1082 transitions. [2023-08-27 00:36:48,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:48,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1082 transitions. [2023-08-27 00:36:48,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 98.36363636363636) internal successors, (1082), 11 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states 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 00:36:48,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 00:36:48,206 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 00:36:48,206 INFO L175 Difference]: Start difference. First operand has 243 places, 297 transitions, 5592 flow. Second operand 11 states and 1082 transitions. [2023-08-27 00:36:48,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 449 transitions, 9821 flow [2023-08-27 00:36:48,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 449 transitions, 9738 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-08-27 00:36:48,666 INFO L231 Difference]: Finished difference. Result has 243 places, 293 transitions, 5523 flow [2023-08-27 00:36:48,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5453, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5523, PETRI_PLACES=243, PETRI_TRANSITIONS=293} [2023-08-27 00:36:48,666 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2023-08-27 00:36:48,667 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 293 transitions, 5523 flow [2023-08-27 00:36:48,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 92.54166666666667) internal successors, (2221), 24 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states 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 00:36:48,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:48,667 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 00:36:48,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:48,868 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:48,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1150682375, now seen corresponding path program 3 times [2023-08-27 00:36:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:48,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731651558] [2023-08-27 00:36:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:49,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:49,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731651558] [2023-08-27 00:36:49,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731651558] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:49,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027136210] [2023-08-27 00:36:49,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:36:49,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:49,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:49,313 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:49,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 00:36:49,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 00:36:49,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:49,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 00:36:49,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:49,606 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:49,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:49,632 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 00:36:49,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:49,663 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:36:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:49,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:49,915 INFO L322 Elim1Store]: treesize reduction 21, result has 54.3 percent of original size [2023-08-27 00:36:49,915 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 37 [2023-08-27 00:36:49,926 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:49,926 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-08-27 00:36:49,937 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-27 00:36:50,023 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:50,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027136210] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:50,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:50,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-27 00:36:50,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497576543] [2023-08-27 00:36:50,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:50,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 00:36:50,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:50,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 00:36:50,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=944, Unknown=6, NotChecked=0, Total=1056 [2023-08-27 00:36:50,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 00:36:50,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 293 transitions, 5523 flow. Second operand has 33 states, 33 states have (on average 87.36363636363636) internal successors, (2883), 33 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states 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 00:36:50,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:50,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 00:36:50,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:51,862 INFO L124 PetriNetUnfolderBase]: 4645/7696 cut-off events. [2023-08-27 00:36:51,862 INFO L125 PetriNetUnfolderBase]: For 159896/160306 co-relation queries the response was YES. [2023-08-27 00:36:51,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64582 conditions, 7696 events. 4645/7696 cut-off events. For 159896/160306 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 47741 event pairs, 1486 based on Foata normal form. 411/8029 useless extension candidates. Maximal degree in co-relation 64515. Up to 5458 conditions per place. [2023-08-27 00:36:51,918 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 239 selfloop transitions, 123 changer transitions 0/367 dead transitions. [2023-08-27 00:36:51,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 367 transitions, 7262 flow [2023-08-27 00:36:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 00:36:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 00:36:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1626 transitions. [2023-08-27 00:36:51,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33959899749373434 [2023-08-27 00:36:51,920 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1626 transitions. [2023-08-27 00:36:51,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1626 transitions. [2023-08-27 00:36:51,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:51,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1626 transitions. [2023-08-27 00:36:51,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.33333333333333) internal successors, (1626), 18 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states 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 00:36:51,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:36:51,926 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:36:51,926 INFO L175 Difference]: Start difference. First operand has 243 places, 293 transitions, 5523 flow. Second operand 18 states and 1626 transitions. [2023-08-27 00:36:51,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 367 transitions, 7262 flow [2023-08-27 00:36:52,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 367 transitions, 7125 flow, removed 6 selfloop flow, removed 13 redundant places. [2023-08-27 00:36:52,300 INFO L231 Difference]: Finished difference. Result has 247 places, 291 transitions, 5641 flow [2023-08-27 00:36:52,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5395, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5641, PETRI_PLACES=247, PETRI_TRANSITIONS=291} [2023-08-27 00:36:52,301 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2023-08-27 00:36:52,301 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 291 transitions, 5641 flow [2023-08-27 00:36:52,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 87.36363636363636) internal successors, (2883), 33 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states 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 00:36:52,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:52,302 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:52,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:52,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 00:36:52,502 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:52,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash 208358928, now seen corresponding path program 3 times [2023-08-27 00:36:52,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:52,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275749172] [2023-08-27 00:36:52,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:52,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:52,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:52,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275749172] [2023-08-27 00:36:52,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275749172] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:52,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607191778] [2023-08-27 00:36:52,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:36:52,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:52,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:52,852 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:52,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 00:36:53,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 00:36:53,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:53,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 00:36:53,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:53,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:53,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:53,140 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:36:53,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:53,195 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:36:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:53,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:53,347 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1182 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1182) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 12)) 4294967296)) is different from false [2023-08-27 00:36:53,350 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1182 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1182) c_~A~0.base) (+ c_~A~0.offset 12)) 4294967296)) is different from false [2023-08-27 00:36:53,398 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:53,399 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 00:36:53,405 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:53,406 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 00:36:53,409 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 00:36:53,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 00:36:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:53,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607191778] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:53,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:53,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2023-08-27 00:36:53,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985662423] [2023-08-27 00:36:53,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:53,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 00:36:53,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:53,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 00:36:53,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=895, Unknown=6, NotChecked=122, Total=1122 [2023-08-27 00:36:53,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:36:53,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 291 transitions, 5641 flow. Second operand has 34 states, 34 states have (on average 84.38235294117646) internal successors, (2869), 34 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states 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 00:36:53,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:53,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:36:53,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:56,060 INFO L124 PetriNetUnfolderBase]: 5314/8715 cut-off events. [2023-08-27 00:36:56,061 INFO L125 PetriNetUnfolderBase]: For 212137/212632 co-relation queries the response was YES. [2023-08-27 00:36:56,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74999 conditions, 8715 events. 5314/8715 cut-off events. For 212137/212632 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 53545 event pairs, 1336 based on Foata normal form. 891/9360 useless extension candidates. Maximal degree in co-relation 74934. Up to 2644 conditions per place. [2023-08-27 00:36:56,130 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 539 selfloop transitions, 120 changer transitions 0/664 dead transitions. [2023-08-27 00:36:56,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 664 transitions, 11907 flow [2023-08-27 00:36:56,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 00:36:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 00:36:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1655 transitions. [2023-08-27 00:36:56,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.345655806182122 [2023-08-27 00:36:56,132 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1655 transitions. [2023-08-27 00:36:56,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1655 transitions. [2023-08-27 00:36:56,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:56,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1655 transitions. [2023-08-27 00:36:56,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 91.94444444444444) internal successors, (1655), 18 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states 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 00:36:56,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:36:56,137 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:36:56,137 INFO L175 Difference]: Start difference. First operand has 247 places, 291 transitions, 5641 flow. Second operand 18 states and 1655 transitions. [2023-08-27 00:36:56,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 664 transitions, 11907 flow [2023-08-27 00:36:56,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 664 transitions, 11813 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-08-27 00:36:56,598 INFO L231 Difference]: Finished difference. Result has 252 places, 302 transitions, 6149 flow [2023-08-27 00:36:56,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5547, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6149, PETRI_PLACES=252, PETRI_TRANSITIONS=302} [2023-08-27 00:36:56,599 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2023-08-27 00:36:56,599 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 302 transitions, 6149 flow [2023-08-27 00:36:56,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 84.38235294117646) internal successors, (2869), 34 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states 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 00:36:56,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:56,599 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:56,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-27 00:36:56,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 00:36:56,800 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:36:56,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2066779134, now seen corresponding path program 4 times [2023-08-27 00:36:56,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:56,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938284341] [2023-08-27 00:36:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:56,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:57,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938284341] [2023-08-27 00:36:57,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938284341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362316312] [2023-08-27 00:36:57,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:36:57,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:57,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:57,303 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:57,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 00:36:57,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:36:57,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:57,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 00:36:57,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:57,541 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:36:57,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:57,567 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:57,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:36:57,646 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:36:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:36:57,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:57,795 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1228 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1228) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 9223372039002259456))) is different from false [2023-08-27 00:36:57,871 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1228 (Array Int Int)) (v_ArrVal_1227 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1227) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1228) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 00:36:57,878 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:57,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 00:36:57,885 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:57,885 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-08-27 00:36:57,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-27 00:36:57,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 00:36:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-08-27 00:36:58,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362316312] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:58,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:58,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2023-08-27 00:36:58,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313382710] [2023-08-27 00:36:58,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:58,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 00:36:58,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:58,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 00:36:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=938, Unknown=17, NotChecked=126, Total=1190 [2023-08-27 00:36:58,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:36:58,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 302 transitions, 6149 flow. Second operand has 35 states, 35 states have (on average 84.37142857142857) internal successors, (2953), 35 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states 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 00:36:58,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:58,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:36:58,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:00,357 INFO L124 PetriNetUnfolderBase]: 5153/8459 cut-off events. [2023-08-27 00:37:00,357 INFO L125 PetriNetUnfolderBase]: For 216751/217218 co-relation queries the response was YES. [2023-08-27 00:37:00,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75778 conditions, 8459 events. 5153/8459 cut-off events. For 216751/217218 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 51701 event pairs, 1260 based on Foata normal form. 563/8780 useless extension candidates. Maximal degree in co-relation 75710. Up to 2600 conditions per place. [2023-08-27 00:37:00,432 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 539 selfloop transitions, 119 changer transitions 0/663 dead transitions. [2023-08-27 00:37:00,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 663 transitions, 12092 flow [2023-08-27 00:37:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 00:37:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 00:37:00,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1652 transitions. [2023-08-27 00:37:00,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34502923976608185 [2023-08-27 00:37:00,434 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1652 transitions. [2023-08-27 00:37:00,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1652 transitions. [2023-08-27 00:37:00,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:00,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1652 transitions. [2023-08-27 00:37:00,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 91.77777777777777) internal successors, (1652), 18 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states 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 00:37:00,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:37:00,440 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:37:00,440 INFO L175 Difference]: Start difference. First operand has 252 places, 302 transitions, 6149 flow. Second operand 18 states and 1652 transitions. [2023-08-27 00:37:00,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 663 transitions, 12092 flow [2023-08-27 00:37:01,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 663 transitions, 11564 flow, removed 32 selfloop flow, removed 13 redundant places. [2023-08-27 00:37:01,171 INFO L231 Difference]: Finished difference. Result has 256 places, 301 transitions, 5834 flow [2023-08-27 00:37:01,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5596, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5834, PETRI_PLACES=256, PETRI_TRANSITIONS=301} [2023-08-27 00:37:01,172 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 215 predicate places. [2023-08-27 00:37:01,172 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 301 transitions, 5834 flow [2023-08-27 00:37:01,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 84.37142857142857) internal successors, (2953), 35 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states 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 00:37:01,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:01,173 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2023-08-27 00:37:01,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:01,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-27 00:37:01,379 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:01,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:01,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1316302045, now seen corresponding path program 6 times [2023-08-27 00:37:01,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:01,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203503264] [2023-08-27 00:37:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:01,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:01,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203503264] [2023-08-27 00:37:01,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203503264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:01,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034156755] [2023-08-27 00:37:01,526 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 00:37:01,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:01,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:01,527 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:01,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-27 00:37:01,756 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-27 00:37:01,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:37:01,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:37:01,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:01,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:02,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034156755] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:02,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:02,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-27 00:37:02,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754890761] [2023-08-27 00:37:02,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:02,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 00:37:02,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 00:37:02,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2023-08-27 00:37:02,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:37:02,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 301 transitions, 5834 flow. Second operand has 29 states, 29 states have (on average 92.44827586206897) internal successors, (2681), 29 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states 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 00:37:02,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:02,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:37:02,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:03,499 INFO L124 PetriNetUnfolderBase]: 4562/7535 cut-off events. [2023-08-27 00:37:03,500 INFO L125 PetriNetUnfolderBase]: For 172430/172810 co-relation queries the response was YES. [2023-08-27 00:37:03,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63785 conditions, 7535 events. 4562/7535 cut-off events. For 172430/172810 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 45583 event pairs, 1624 based on Foata normal form. 523/7844 useless extension candidates. Maximal degree in co-relation 63722. Up to 3241 conditions per place. [2023-08-27 00:37:03,554 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 400 selfloop transitions, 112 changer transitions 0/517 dead transitions. [2023-08-27 00:37:03,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 517 transitions, 9789 flow [2023-08-27 00:37:03,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 00:37:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 00:37:03,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1294 transitions. [2023-08-27 00:37:03,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3742047426257953 [2023-08-27 00:37:03,556 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1294 transitions. [2023-08-27 00:37:03,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1294 transitions. [2023-08-27 00:37:03,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:03,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1294 transitions. [2023-08-27 00:37:03,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 99.53846153846153) internal successors, (1294), 13 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states 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 00:37:03,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states 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 00:37:03,560 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states 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 00:37:03,560 INFO L175 Difference]: Start difference. First operand has 256 places, 301 transitions, 5834 flow. Second operand 13 states and 1294 transitions. [2023-08-27 00:37:03,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 517 transitions, 9789 flow [2023-08-27 00:37:03,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 517 transitions, 9438 flow, removed 12 selfloop flow, removed 15 redundant places. [2023-08-27 00:37:03,962 INFO L231 Difference]: Finished difference. Result has 259 places, 320 transitions, 6553 flow [2023-08-27 00:37:03,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5447, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6553, PETRI_PLACES=259, PETRI_TRANSITIONS=320} [2023-08-27 00:37:03,963 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2023-08-27 00:37:03,963 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 320 transitions, 6553 flow [2023-08-27 00:37:03,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 92.44827586206897) internal successors, (2681), 29 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states 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 00:37:03,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:03,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:03,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:04,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 00:37:04,164 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:04,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:04,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1025010259, now seen corresponding path program 1 times [2023-08-27 00:37:04,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:04,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483648669] [2023-08-27 00:37:04,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:04,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:04,210 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 00:37:04,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:04,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483648669] [2023-08-27 00:37:04,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483648669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:04,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952422109] [2023-08-27 00:37:04,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:04,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:04,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:04,212 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:04,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-27 00:37:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:04,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:37:04,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:04,382 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 00:37:04,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:04,400 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 00:37:04,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952422109] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:04,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:37:04,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-27 00:37:04,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084207787] [2023-08-27 00:37:04,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:37:04,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:37:04,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:37:04,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-27 00:37:04,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:37:04,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 320 transitions, 6553 flow. Second operand has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 00:37:04,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:04,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:37:04,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:05,470 INFO L124 PetriNetUnfolderBase]: 4168/6765 cut-off events. [2023-08-27 00:37:05,470 INFO L125 PetriNetUnfolderBase]: For 164250/164545 co-relation queries the response was YES. [2023-08-27 00:37:05,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60292 conditions, 6765 events. 4168/6765 cut-off events. For 164250/164545 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 39328 event pairs, 996 based on Foata normal form. 401/6968 useless extension candidates. Maximal degree in co-relation 60223. Up to 3482 conditions per place. [2023-08-27 00:37:05,528 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 249 selfloop transitions, 123 changer transitions 0/377 dead transitions. [2023-08-27 00:37:05,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 377 transitions, 7861 flow [2023-08-27 00:37:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:37:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:37:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 494 transitions. [2023-08-27 00:37:05,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2023-08-27 00:37:05,529 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 494 transitions. [2023-08-27 00:37:05,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 494 transitions. [2023-08-27 00:37:05,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:05,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 494 transitions. [2023-08-27 00:37:05,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states 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 00:37:05,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:37:05,531 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:37:05,531 INFO L175 Difference]: Start difference. First operand has 259 places, 320 transitions, 6553 flow. Second operand 5 states and 494 transitions. [2023-08-27 00:37:05,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 377 transitions, 7861 flow [2023-08-27 00:37:05,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 377 transitions, 7792 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-08-27 00:37:05,838 INFO L231 Difference]: Finished difference. Result has 255 places, 308 transitions, 6455 flow [2023-08-27 00:37:05,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6209, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6455, PETRI_PLACES=255, PETRI_TRANSITIONS=308} [2023-08-27 00:37:05,839 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2023-08-27 00:37:05,840 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 308 transitions, 6455 flow [2023-08-27 00:37:05,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 00:37:05,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:05,840 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:05,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:06,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-08-27 00:37:06,046 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:06,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:06,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1258849966, now seen corresponding path program 6 times [2023-08-27 00:37:06,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:06,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904790450] [2023-08-27 00:37:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:06,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:06,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:06,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904790450] [2023-08-27 00:37:06,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904790450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:06,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34493528] [2023-08-27 00:37:06,381 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 00:37:06,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:06,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:06,382 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:06,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-27 00:37:06,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-27 00:37:06,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:37:06,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 00:37:06,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:06,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:37:06,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:37:06,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:37:06,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:37:06,696 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:37:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:06,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:06,906 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1342 (Array Int Int)) (v_ArrVal_1341 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1341) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1342) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) is different from false [2023-08-27 00:37:06,911 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:06,911 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 00:37:06,917 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:06,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 00:37:06,921 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 00:37:06,925 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 00:37:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-08-27 00:37:07,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34493528] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:07,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:07,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-27 00:37:07,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736805987] [2023-08-27 00:37:07,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:07,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 00:37:07,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:07,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 00:37:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=888, Unknown=6, NotChecked=60, Total=1056 [2023-08-27 00:37:07,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:37:07,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 308 transitions, 6455 flow. Second operand has 33 states, 33 states have (on average 84.45454545454545) internal successors, (2787), 33 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states 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 00:37:07,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:07,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:37:07,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:09,316 INFO L124 PetriNetUnfolderBase]: 4919/7905 cut-off events. [2023-08-27 00:37:09,316 INFO L125 PetriNetUnfolderBase]: For 233631/233889 co-relation queries the response was YES. [2023-08-27 00:37:09,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72294 conditions, 7905 events. 4919/7905 cut-off events. For 233631/233889 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 44769 event pairs, 915 based on Foata normal form. 522/8291 useless extension candidates. Maximal degree in co-relation 72226. Up to 2416 conditions per place. [2023-08-27 00:37:09,386 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 668 selfloop transitions, 76 changer transitions 0/754 dead transitions. [2023-08-27 00:37:09,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 754 transitions, 19927 flow [2023-08-27 00:37:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 00:37:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 00:37:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1654 transitions. [2023-08-27 00:37:09,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3454469507101086 [2023-08-27 00:37:09,388 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1654 transitions. [2023-08-27 00:37:09,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1654 transitions. [2023-08-27 00:37:09,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:09,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1654 transitions. [2023-08-27 00:37:09,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 91.88888888888889) internal successors, (1654), 18 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states 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 00:37:09,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:37:09,392 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:37:09,392 INFO L175 Difference]: Start difference. First operand has 255 places, 308 transitions, 6455 flow. Second operand 18 states and 1654 transitions. [2023-08-27 00:37:09,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 754 transitions, 19927 flow [2023-08-27 00:37:09,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 754 transitions, 19471 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-08-27 00:37:09,858 INFO L231 Difference]: Finished difference. Result has 270 places, 318 transitions, 6671 flow [2023-08-27 00:37:09,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6310, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6671, PETRI_PLACES=270, PETRI_TRANSITIONS=318} [2023-08-27 00:37:09,859 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2023-08-27 00:37:09,859 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 318 transitions, 6671 flow [2023-08-27 00:37:09,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 84.45454545454545) internal successors, (2787), 33 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states 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 00:37:09,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:09,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:09,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:10,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:10,066 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:10,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:10,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1547319278, now seen corresponding path program 1 times [2023-08-27 00:37:10,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:10,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331900765] [2023-08-27 00:37:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:10,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:10,115 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 00:37:10,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:10,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331900765] [2023-08-27 00:37:10,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331900765] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:10,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543014197] [2023-08-27 00:37:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:10,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:10,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:10,117 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:10,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-27 00:37:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:10,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:37:10,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:10,305 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 00:37:10,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:10,332 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 00:37:10,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543014197] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:10,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:37:10,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-27 00:37:10,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224832684] [2023-08-27 00:37:10,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:37:10,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:37:10,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:10,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:37:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-27 00:37:10,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:37:10,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 318 transitions, 6671 flow. Second operand has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 00:37:10,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:10,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:37:10,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:11,672 INFO L124 PetriNetUnfolderBase]: 4694/7522 cut-off events. [2023-08-27 00:37:11,672 INFO L125 PetriNetUnfolderBase]: For 222648/222886 co-relation queries the response was YES. [2023-08-27 00:37:11,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71561 conditions, 7522 events. 4694/7522 cut-off events. For 222648/222886 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 42112 event pairs, 774 based on Foata normal form. 386/7772 useless extension candidates. Maximal degree in co-relation 71492. Up to 3876 conditions per place. [2023-08-27 00:37:11,826 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 350 selfloop transitions, 58 changer transitions 0/418 dead transitions. [2023-08-27 00:37:11,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 418 transitions, 10334 flow [2023-08-27 00:37:11,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:37:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:37:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 494 transitions. [2023-08-27 00:37:11,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2023-08-27 00:37:11,827 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 494 transitions. [2023-08-27 00:37:11,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 494 transitions. [2023-08-27 00:37:11,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:11,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 494 transitions. [2023-08-27 00:37:11,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states 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 00:37:11,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:37:11,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 00:37:11,828 INFO L175 Difference]: Start difference. First operand has 270 places, 318 transitions, 6671 flow. Second operand 5 states and 494 transitions. [2023-08-27 00:37:11,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 418 transitions, 10334 flow [2023-08-27 00:37:12,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 418 transitions, 10245 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-08-27 00:37:12,173 INFO L231 Difference]: Finished difference. Result has 261 places, 313 transitions, 6647 flow [2023-08-27 00:37:12,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6531, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6647, PETRI_PLACES=261, PETRI_TRANSITIONS=313} [2023-08-27 00:37:12,173 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2023-08-27 00:37:12,174 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 313 transitions, 6647 flow [2023-08-27 00:37:12,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 00:37:12,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:12,174 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:12,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:12,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-27 00:37:12,380 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:12,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:12,380 INFO L85 PathProgramCache]: Analyzing trace with hash 279378019, now seen corresponding path program 3 times [2023-08-27 00:37:12,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:12,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516937416] [2023-08-27 00:37:12,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:12,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:12,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516937416] [2023-08-27 00:37:12,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516937416] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147481205] [2023-08-27 00:37:12,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:37:12,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:12,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:12,761 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:12,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-27 00:37:13,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 00:37:13,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:37:13,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 00:37:13,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:13,116 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 00:37:13,159 INFO L322 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-27 00:37:13,159 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2023-08-27 00:37:13,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:37:13,196 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 00:37:13,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:37:13,228 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 00:37:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:13,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:13,531 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1424 (Array Int Int)) (v_ArrVal_1423 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1423) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1424) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296))) is different from false [2023-08-27 00:37:13,595 INFO L322 Elim1Store]: treesize reduction 21, result has 54.3 percent of original size [2023-08-27 00:37:13,595 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 42 [2023-08-27 00:37:13,601 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:13,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-08-27 00:37:13,607 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-27 00:37:13,610 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 00:37:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-27 00:37:13,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147481205] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:13,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:13,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2023-08-27 00:37:13,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218882250] [2023-08-27 00:37:13,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:13,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-27 00:37:13,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:13,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-27 00:37:13,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1205, Unknown=15, NotChecked=70, Total=1406 [2023-08-27 00:37:13,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:37:13,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 313 transitions, 6647 flow. Second operand has 38 states, 38 states have (on average 84.42105263157895) internal successors, (3208), 38 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states 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 00:37:13,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:13,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:37:13,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:16,492 INFO L124 PetriNetUnfolderBase]: 4569/7315 cut-off events. [2023-08-27 00:37:16,492 INFO L125 PetriNetUnfolderBase]: For 214893/215121 co-relation queries the response was YES. [2023-08-27 00:37:16,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69435 conditions, 7315 events. 4569/7315 cut-off events. For 214893/215121 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 40473 event pairs, 681 based on Foata normal form. 310/7489 useless extension candidates. Maximal degree in co-relation 69365. Up to 2304 conditions per place. [2023-08-27 00:37:16,555 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 678 selfloop transitions, 75 changer transitions 0/763 dead transitions. [2023-08-27 00:37:16,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 763 transitions, 20110 flow [2023-08-27 00:37:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 00:37:16,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 00:37:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1650 transitions. [2023-08-27 00:37:16,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34461152882205515 [2023-08-27 00:37:16,557 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1650 transitions. [2023-08-27 00:37:16,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1650 transitions. [2023-08-27 00:37:16,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:16,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1650 transitions. [2023-08-27 00:37:16,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 91.66666666666667) internal successors, (1650), 18 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states 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 00:37:16,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:37:16,562 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 266.0) internal successors, (5054), 19 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states 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 00:37:16,563 INFO L175 Difference]: Start difference. First operand has 261 places, 313 transitions, 6647 flow. Second operand 18 states and 1650 transitions. [2023-08-27 00:37:16,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 763 transitions, 20110 flow [2023-08-27 00:37:16,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 763 transitions, 20048 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 00:37:16,908 INFO L231 Difference]: Finished difference. Result has 275 places, 312 transitions, 6710 flow [2023-08-27 00:37:16,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6560, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6710, PETRI_PLACES=275, PETRI_TRANSITIONS=312} [2023-08-27 00:37:16,908 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2023-08-27 00:37:16,908 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 312 transitions, 6710 flow [2023-08-27 00:37:16,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 84.42105263157895) internal successors, (3208), 38 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states 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 00:37:16,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:16,909 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1] [2023-08-27 00:37:16,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-08-27 00:37:17,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:17,110 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:17,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1999193303, now seen corresponding path program 7 times [2023-08-27 00:37:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118962829] [2023-08-27 00:37:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:17,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:17,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118962829] [2023-08-27 00:37:17,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118962829] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:17,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132307344] [2023-08-27 00:37:17,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 00:37:17,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:17,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:17,488 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:17,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-27 00:37:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:17,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-27 00:37:17,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:17,757 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:37:17,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:37:17,783 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:37:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:17,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:18,096 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1469 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1469) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 00:37:18,102 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:18,102 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-08-27 00:37:18,107 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:18,107 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-08-27 00:37:18,118 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-08-27 00:37:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-27 00:37:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132307344] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:18,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:18,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-27 00:37:18,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479077688] [2023-08-27 00:37:18,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:18,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-27 00:37:18,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-27 00:37:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1084, Unknown=1, NotChecked=66, Total=1260 [2023-08-27 00:37:18,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 00:37:18,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 312 transitions, 6710 flow. Second operand has 36 states, 36 states have (on average 87.41666666666667) internal successors, (3147), 36 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states 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 00:37:18,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:18,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 00:37:18,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:20,278 INFO L124 PetriNetUnfolderBase]: 4485/7183 cut-off events. [2023-08-27 00:37:20,278 INFO L125 PetriNetUnfolderBase]: For 186202/186540 co-relation queries the response was YES. [2023-08-27 00:37:20,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69248 conditions, 7183 events. 4485/7183 cut-off events. For 186202/186540 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 40161 event pairs, 1180 based on Foata normal form. 341/7358 useless extension candidates. Maximal degree in co-relation 69178. Up to 5020 conditions per place. [2023-08-27 00:37:20,340 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 265 selfloop transitions, 130 changer transitions 0/400 dead transitions. [2023-08-27 00:37:20,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 400 transitions, 8983 flow [2023-08-27 00:37:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 00:37:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 00:37:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1893 transitions. [2023-08-27 00:37:20,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3388829215896885 [2023-08-27 00:37:20,343 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1893 transitions. [2023-08-27 00:37:20,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1893 transitions. [2023-08-27 00:37:20,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:20,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1893 transitions. [2023-08-27 00:37:20,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 90.14285714285714) internal successors, (1893), 21 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states 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 00:37:20,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states 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 00:37:20,347 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states 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 00:37:20,347 INFO L175 Difference]: Start difference. First operand has 275 places, 312 transitions, 6710 flow. Second operand 21 states and 1893 transitions. [2023-08-27 00:37:20,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 400 transitions, 8983 flow [2023-08-27 00:37:20,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 400 transitions, 8785 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-08-27 00:37:20,696 INFO L231 Difference]: Finished difference. Result has 283 places, 320 transitions, 7060 flow [2023-08-27 00:37:20,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6594, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7060, PETRI_PLACES=283, PETRI_TRANSITIONS=320} [2023-08-27 00:37:20,696 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2023-08-27 00:37:20,696 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 320 transitions, 7060 flow [2023-08-27 00:37:20,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 87.41666666666667) internal successors, (3147), 36 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states 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 00:37:20,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:20,697 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1] [2023-08-27 00:37:20,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:20,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-27 00:37:20,898 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:20,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1999193297, now seen corresponding path program 4 times [2023-08-27 00:37:20,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:20,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282487025] [2023-08-27 00:37:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:20,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:21,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:21,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282487025] [2023-08-27 00:37:21,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282487025] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024435823] [2023-08-27 00:37:21,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:37:21,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:21,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:21,364 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:21,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-27 00:37:21,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:37:21,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:37:21,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-27 00:37:21,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:21,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:37:21,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:37:21,667 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:37:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:21,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:21,942 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:21,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-27 00:37:21,948 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:21,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-08-27 00:37:21,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-27 00:37:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:22,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024435823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:22,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:22,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-27 00:37:22,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951122396] [2023-08-27 00:37:22,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:22,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-27 00:37:22,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:22,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-27 00:37:22,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1146, Unknown=3, NotChecked=0, Total=1260 [2023-08-27 00:37:22,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 00:37:22,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 320 transitions, 7060 flow. Second operand has 36 states, 36 states have (on average 87.41666666666667) internal successors, (3147), 36 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states 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 00:37:22,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:22,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 00:37:22,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:24,004 INFO L124 PetriNetUnfolderBase]: 4484/7182 cut-off events. [2023-08-27 00:37:24,004 INFO L125 PetriNetUnfolderBase]: For 189787/190119 co-relation queries the response was YES. [2023-08-27 00:37:24,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69512 conditions, 7182 events. 4484/7182 cut-off events. For 189787/190119 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 40034 event pairs, 1196 based on Foata normal form. 333/7348 useless extension candidates. Maximal degree in co-relation 69440. Up to 5019 conditions per place. [2023-08-27 00:37:24,066 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 264 selfloop transitions, 129 changer transitions 0/398 dead transitions. [2023-08-27 00:37:24,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 398 transitions, 9035 flow [2023-08-27 00:37:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 00:37:24,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 00:37:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1890 transitions. [2023-08-27 00:37:24,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383458646616541 [2023-08-27 00:37:24,069 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1890 transitions. [2023-08-27 00:37:24,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1890 transitions. [2023-08-27 00:37:24,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:24,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1890 transitions. [2023-08-27 00:37:24,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 90.0) internal successors, (1890), 21 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states 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 00:37:24,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states 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 00:37:24,074 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states 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 00:37:24,074 INFO L175 Difference]: Start difference. First operand has 283 places, 320 transitions, 7060 flow. Second operand 21 states and 1890 transitions. [2023-08-27 00:37:24,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 398 transitions, 9035 flow [2023-08-27 00:37:24,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 398 transitions, 8967 flow, removed 9 selfloop flow, removed 13 redundant places. [2023-08-27 00:37:24,449 INFO L231 Difference]: Finished difference. Result has 290 places, 318 transitions, 7206 flow [2023-08-27 00:37:24,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=6948, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7206, PETRI_PLACES=290, PETRI_TRANSITIONS=318} [2023-08-27 00:37:24,450 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2023-08-27 00:37:24,450 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 318 transitions, 7206 flow [2023-08-27 00:37:24,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 87.41666666666667) internal successors, (3147), 36 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states 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 00:37:24,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:24,451 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:24,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:24,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-08-27 00:37:24,657 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:24,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1425933263, now seen corresponding path program 7 times [2023-08-27 00:37:24,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:24,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906403077] [2023-08-27 00:37:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:24,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:24,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906403077] [2023-08-27 00:37:24,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906403077] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:24,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487150210] [2023-08-27 00:37:24,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 00:37:24,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:24,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:24,796 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:24,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-27 00:37:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:24,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:37:24,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:25,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:25,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487150210] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:25,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:25,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-27 00:37:25,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251311466] [2023-08-27 00:37:25,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:25,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 00:37:25,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:25,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 00:37:25,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-08-27 00:37:25,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 266 [2023-08-27 00:37:25,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 318 transitions, 7206 flow. Second operand has 29 states, 29 states have (on average 92.51724137931035) internal successors, (2683), 29 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states 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 00:37:25,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:25,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 266 [2023-08-27 00:37:25,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:26,705 INFO L124 PetriNetUnfolderBase]: 4206/6754 cut-off events. [2023-08-27 00:37:26,705 INFO L125 PetriNetUnfolderBase]: For 206287/206515 co-relation queries the response was YES. [2023-08-27 00:37:26,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66268 conditions, 6754 events. 4206/6754 cut-off events. For 206287/206515 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 36594 event pairs, 1265 based on Foata normal form. 328/6996 useless extension candidates. Maximal degree in co-relation 66196. Up to 3412 conditions per place. [2023-08-27 00:37:26,776 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 499 selfloop transitions, 48 changer transitions 0/557 dead transitions. [2023-08-27 00:37:26,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 557 transitions, 14881 flow [2023-08-27 00:37:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 00:37:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 00:37:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1274 transitions. [2023-08-27 00:37:26,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3684210526315789 [2023-08-27 00:37:26,778 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1274 transitions. [2023-08-27 00:37:26,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1274 transitions. [2023-08-27 00:37:26,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:26,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1274 transitions. [2023-08-27 00:37:26,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 98.0) internal successors, (1274), 13 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states 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 00:37:26,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states 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 00:37:26,781 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states 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 00:37:26,781 INFO L175 Difference]: Start difference. First operand has 290 places, 318 transitions, 7206 flow. Second operand 13 states and 1274 transitions. [2023-08-27 00:37:26,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 557 transitions, 14881 flow [2023-08-27 00:37:27,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 557 transitions, 14824 flow, removed 3 selfloop flow, removed 16 redundant places. [2023-08-27 00:37:27,254 INFO L231 Difference]: Finished difference. Result has 286 places, 314 transitions, 7166 flow [2023-08-27 00:37:27,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=7070, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7166, PETRI_PLACES=286, PETRI_TRANSITIONS=314} [2023-08-27 00:37:27,255 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2023-08-27 00:37:27,255 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 314 transitions, 7166 flow [2023-08-27 00:37:27,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 92.51724137931035) internal successors, (2683), 29 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states 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 00:37:27,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:27,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:27,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:27,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-27 00:37:27,461 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:27,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:27,462 INFO L85 PathProgramCache]: Analyzing trace with hash 25945373, now seen corresponding path program 1 times [2023-08-27 00:37:27,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:27,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801248549] [2023-08-27 00:37:27,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:27,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:27,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:27,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801248549] [2023-08-27 00:37:27,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801248549] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:27,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696269945] [2023-08-27 00:37:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:27,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:27,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:27,905 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:27,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-27 00:37:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:28,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-27 00:37:28,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:28,104 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:37:28,123 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 00:37:28,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:37:28,233 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-08-27 00:37:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:28,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:28,383 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1590 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1590) c_~A~0.base) c_~A~0.offset) c_~counter~0)) is different from false [2023-08-27 00:37:28,558 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:28,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 47 [2023-08-27 00:37:28,561 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 143 [2023-08-27 00:37:28,566 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2023-08-27 00:37:28,569 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-08-27 00:37:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 00:37:28,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696269945] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:28,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:28,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-27 00:37:28,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723447145] [2023-08-27 00:37:28,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:28,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 00:37:28,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:28,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 00:37:28,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=645, Unknown=6, NotChecked=52, Total=812 [2023-08-27 00:37:28,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 266 [2023-08-27 00:37:28,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 314 transitions, 7166 flow. Second operand has 29 states, 29 states have (on average 74.51724137931035) internal successors, (2161), 29 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states 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 00:37:28,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:28,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 266 [2023-08-27 00:37:28,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:31,268 INFO L124 PetriNetUnfolderBase]: 6184/10136 cut-off events. [2023-08-27 00:37:31,268 INFO L125 PetriNetUnfolderBase]: For 276994/276994 co-relation queries the response was YES. [2023-08-27 00:37:31,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96332 conditions, 10136 events. 6184/10136 cut-off events. For 276994/276994 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 62182 event pairs, 886 based on Foata normal form. 9/10039 useless extension candidates. Maximal degree in co-relation 96260. Up to 6205 conditions per place. [2023-08-27 00:37:31,391 INFO L140 encePairwiseOnDemand]: 245/266 looper letters, 600 selfloop transitions, 343 changer transitions 15/958 dead transitions. [2023-08-27 00:37:31,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 958 transitions, 20628 flow [2023-08-27 00:37:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 00:37:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 00:37:31,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2269 transitions. [2023-08-27 00:37:31,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046455424274973 [2023-08-27 00:37:31,395 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2269 transitions. [2023-08-27 00:37:31,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2269 transitions. [2023-08-27 00:37:31,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:31,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2269 transitions. [2023-08-27 00:37:31,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 81.03571428571429) internal successors, (2269), 28 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states 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 00:37:31,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 266.0) internal successors, (7714), 29 states have internal predecessors, (7714), 0 states have call successors, (0), 0 states 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 00:37:31,404 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 266.0) internal successors, (7714), 29 states have internal predecessors, (7714), 0 states have call successors, (0), 0 states 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 00:37:31,404 INFO L175 Difference]: Start difference. First operand has 286 places, 314 transitions, 7166 flow. Second operand 28 states and 2269 transitions. [2023-08-27 00:37:31,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 958 transitions, 20628 flow [2023-08-27 00:37:32,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 958 transitions, 20251 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-08-27 00:37:32,122 INFO L231 Difference]: Finished difference. Result has 319 places, 584 transitions, 14290 flow [2023-08-27 00:37:32,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=7078, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14290, PETRI_PLACES=319, PETRI_TRANSITIONS=584} [2023-08-27 00:37:32,123 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2023-08-27 00:37:32,123 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 584 transitions, 14290 flow [2023-08-27 00:37:32,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 74.51724137931035) internal successors, (2161), 29 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states 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 00:37:32,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:32,123 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:32,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-08-27 00:37:32,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-27 00:37:32,325 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:32,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:32,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1805398820, now seen corresponding path program 5 times [2023-08-27 00:37:32,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:32,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958998403] [2023-08-27 00:37:32,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:32,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:32,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958998403] [2023-08-27 00:37:32,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958998403] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:32,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071828973] [2023-08-27 00:37:32,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:37:32,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:32,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:32,785 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:32,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-27 00:37:32,984 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-27 00:37:32,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:37:32,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-27 00:37:32,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:33,121 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:37:33,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:37:33,158 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:37:33,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:37:33,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 00:37:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:33,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:33,435 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1640 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1640) c_~A~0.base) (+ c_~A~0.offset 16)) 9223372039002259456))) is different from false [2023-08-27 00:37:33,441 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1640 (Array Int Int)) (v_ArrVal_1639 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1639) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1640) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 00:37:33,447 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:33,447 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 00:37:33,453 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:33,453 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 00:37:33,457 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 00:37:33,461 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 00:37:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-27 00:37:33,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071828973] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:33,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:33,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-27 00:37:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085419691] [2023-08-27 00:37:33,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:33,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-27 00:37:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:33,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-27 00:37:33,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1218, Unknown=2, NotChecked=142, Total=1482 [2023-08-27 00:37:33,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:37:33,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 584 transitions, 14290 flow. Second operand has 39 states, 39 states have (on average 84.41025641025641) internal successors, (3292), 39 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states 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 00:37:33,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:33,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:37:33,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:37,671 INFO L124 PetriNetUnfolderBase]: 6525/10662 cut-off events. [2023-08-27 00:37:37,671 INFO L125 PetriNetUnfolderBase]: For 343917/344196 co-relation queries the response was YES. [2023-08-27 00:37:37,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112076 conditions, 10662 events. 6525/10662 cut-off events. For 343917/344196 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 65300 event pairs, 1446 based on Foata normal form. 402/10895 useless extension candidates. Maximal degree in co-relation 111989. Up to 4734 conditions per place. [2023-08-27 00:37:37,814 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 772 selfloop transitions, 222 changer transitions 0/1011 dead transitions. [2023-08-27 00:37:37,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1011 transitions, 23773 flow [2023-08-27 00:37:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 00:37:37,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 00:37:37,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1928 transitions. [2023-08-27 00:37:37,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3451485857500895 [2023-08-27 00:37:37,817 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1928 transitions. [2023-08-27 00:37:37,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1928 transitions. [2023-08-27 00:37:37,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:37,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1928 transitions. [2023-08-27 00:37:37,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 91.80952380952381) internal successors, (1928), 21 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 00:37:37,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states 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 00:37:37,822 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states 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 00:37:37,822 INFO L175 Difference]: Start difference. First operand has 319 places, 584 transitions, 14290 flow. Second operand 21 states and 1928 transitions. [2023-08-27 00:37:37,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1011 transitions, 23773 flow [2023-08-27 00:37:39,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1011 transitions, 22922 flow, removed 239 selfloop flow, removed 6 redundant places. [2023-08-27 00:37:39,212 INFO L231 Difference]: Finished difference. Result has 335 places, 605 transitions, 14822 flow [2023-08-27 00:37:39,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=13643, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14822, PETRI_PLACES=335, PETRI_TRANSITIONS=605} [2023-08-27 00:37:39,213 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2023-08-27 00:37:39,213 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 605 transitions, 14822 flow [2023-08-27 00:37:39,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 84.41025641025641) internal successors, (3292), 39 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states 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 00:37:39,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:39,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:39,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-08-27 00:37:39,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-08-27 00:37:39,414 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:39,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:39,415 INFO L85 PathProgramCache]: Analyzing trace with hash 148884527, now seen corresponding path program 2 times [2023-08-27 00:37:39,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:39,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86647416] [2023-08-27 00:37:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:39,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:37:39,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:39,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86647416] [2023-08-27 00:37:39,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86647416] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:39,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739141823] [2023-08-27 00:37:39,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:37:39,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:39,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:39,785 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:39,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-27 00:37:39,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:37:40,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:37:40,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-27 00:37:40,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:40,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:37:40,104 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-08-27 00:37:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:37:40,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:40,329 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:40,329 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 82 [2023-08-27 00:37:40,334 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-08-27 00:37:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:37:40,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739141823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:40,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:40,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-27 00:37:40,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044446639] [2023-08-27 00:37:40,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:40,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 00:37:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 00:37:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=558, Unknown=2, NotChecked=0, Total=650 [2023-08-27 00:37:40,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 266 [2023-08-27 00:37:40,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 605 transitions, 14822 flow. Second operand has 26 states, 26 states have (on average 83.76923076923077) internal successors, (2178), 26 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states 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 00:37:40,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:40,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 266 [2023-08-27 00:37:40,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:43,869 INFO L124 PetriNetUnfolderBase]: 7570/12408 cut-off events. [2023-08-27 00:37:43,869 INFO L125 PetriNetUnfolderBase]: For 414271/414271 co-relation queries the response was YES. [2023-08-27 00:37:43,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132070 conditions, 12408 events. 7570/12408 cut-off events. For 414271/414271 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 78420 event pairs, 1500 based on Foata normal form. 9/12297 useless extension candidates. Maximal degree in co-relation 131983. Up to 8581 conditions per place. [2023-08-27 00:37:44,176 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 776 selfloop transitions, 274 changer transitions 11/1061 dead transitions. [2023-08-27 00:37:44,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 1061 transitions, 26769 flow [2023-08-27 00:37:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 00:37:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 00:37:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1899 transitions. [2023-08-27 00:37:44,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3399570354457572 [2023-08-27 00:37:44,178 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1899 transitions. [2023-08-27 00:37:44,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1899 transitions. [2023-08-27 00:37:44,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:44,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1899 transitions. [2023-08-27 00:37:44,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 90.42857142857143) internal successors, (1899), 21 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states 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 00:37:44,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states 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 00:37:44,183 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states 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 00:37:44,183 INFO L175 Difference]: Start difference. First operand has 335 places, 605 transitions, 14822 flow. Second operand 21 states and 1899 transitions. [2023-08-27 00:37:44,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 1061 transitions, 26769 flow [2023-08-27 00:37:45,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 1061 transitions, 24896 flow, removed 105 selfloop flow, removed 15 redundant places. [2023-08-27 00:37:45,431 INFO L231 Difference]: Finished difference. Result has 350 places, 765 transitions, 18608 flow [2023-08-27 00:37:45,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=13703, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=18608, PETRI_PLACES=350, PETRI_TRANSITIONS=765} [2023-08-27 00:37:45,432 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2023-08-27 00:37:45,432 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 765 transitions, 18608 flow [2023-08-27 00:37:45,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 83.76923076923077) internal successors, (2178), 26 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states 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 00:37:45,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:45,432 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:45,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-08-27 00:37:45,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-08-27 00:37:45,682 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:45,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:45,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1929366426, now seen corresponding path program 4 times [2023-08-27 00:37:45,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:45,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574607760] [2023-08-27 00:37:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:45,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:46,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:46,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574607760] [2023-08-27 00:37:46,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574607760] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:46,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645154662] [2023-08-27 00:37:46,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:37:46,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:46,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:46,107 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:46,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-27 00:37:46,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:37:46,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:37:46,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-27 00:37:46,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:46,298 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-08-27 00:37:46,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 00:37:46,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:37:46,374 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:37:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:46,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:46,550 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1723 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1723) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 16)) 4294967296)) is different from false [2023-08-27 00:37:46,614 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:46,614 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 00:37:46,619 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:46,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 00:37:46,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 00:37:46,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-08-27 00:37:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:46,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645154662] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:46,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:46,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2023-08-27 00:37:46,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214194202] [2023-08-27 00:37:46,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:46,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 00:37:46,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 00:37:46,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=835, Unknown=14, NotChecked=58, Total=992 [2023-08-27 00:37:46,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 266 [2023-08-27 00:37:46,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 765 transitions, 18608 flow. Second operand has 32 states, 32 states have (on average 84.4375) internal successors, (2702), 32 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states 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 00:37:46,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:46,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 266 [2023-08-27 00:37:46,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:51,009 INFO L124 PetriNetUnfolderBase]: 7309/12014 cut-off events. [2023-08-27 00:37:51,009 INFO L125 PetriNetUnfolderBase]: For 353491/353670 co-relation queries the response was YES. [2023-08-27 00:37:51,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123534 conditions, 12014 events. 7309/12014 cut-off events. For 353491/353670 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 76308 event pairs, 1631 based on Foata normal form. 164/12028 useless extension candidates. Maximal degree in co-relation 123443. Up to 5289 conditions per place. [2023-08-27 00:37:51,128 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 894 selfloop transitions, 294 changer transitions 0/1210 dead transitions. [2023-08-27 00:37:51,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 1210 transitions, 28420 flow [2023-08-27 00:37:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 00:37:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 00:37:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1925 transitions. [2023-08-27 00:37:51,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34461152882205515 [2023-08-27 00:37:51,133 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1925 transitions. [2023-08-27 00:37:51,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1925 transitions. [2023-08-27 00:37:51,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:51,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1925 transitions. [2023-08-27 00:37:51,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 91.66666666666667) internal successors, (1925), 21 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states 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 00:37:51,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states 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 00:37:51,139 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 266.0) internal successors, (5852), 22 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states 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 00:37:51,139 INFO L175 Difference]: Start difference. First operand has 350 places, 765 transitions, 18608 flow. Second operand 21 states and 1925 transitions. [2023-08-27 00:37:51,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 1210 transitions, 28420 flow [2023-08-27 00:37:52,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1210 transitions, 27757 flow, removed 260 selfloop flow, removed 5 redundant places. [2023-08-27 00:37:52,578 INFO L231 Difference]: Finished difference. Result has 365 places, 764 transitions, 18636 flow [2023-08-27 00:37:52,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=18048, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=18636, PETRI_PLACES=365, PETRI_TRANSITIONS=764} [2023-08-27 00:37:52,579 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2023-08-27 00:37:52,579 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 764 transitions, 18636 flow [2023-08-27 00:37:52,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 84.4375) internal successors, (2702), 32 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states 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 00:37:52,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:52,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:52,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:52,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-08-27 00:37:52,780 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:52,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash -822138425, now seen corresponding path program 3 times [2023-08-27 00:37:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:52,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189341195] [2023-08-27 00:37:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:52,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:37:53,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189341195] [2023-08-27 00:37:53,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189341195] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:53,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461943626] [2023-08-27 00:37:53,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:37:53,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:53,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:53,129 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:53,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-27 00:37:53,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 00:37:53,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:37:53,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 00:37:53,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:37:53,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:53,534 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:53,534 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 68 [2023-08-27 00:37:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:37:53,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461943626] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:53,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:53,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 15 [2023-08-27 00:37:53,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668927843] [2023-08-27 00:37:53,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:53,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 00:37:53,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 00:37:53,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-08-27 00:37:53,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-27 00:37:53,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 764 transitions, 18636 flow. Second operand has 17 states, 17 states have (on average 88.17647058823529) internal successors, (1499), 17 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states 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 00:37:53,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:53,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-27 00:37:53,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:57,227 INFO L124 PetriNetUnfolderBase]: 8320/13701 cut-off events. [2023-08-27 00:37:57,227 INFO L125 PetriNetUnfolderBase]: For 410411/410411 co-relation queries the response was YES. [2023-08-27 00:37:57,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142362 conditions, 13701 events. 8320/13701 cut-off events. For 410411/410411 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 89409 event pairs, 1823 based on Foata normal form. 9/13588 useless extension candidates. Maximal degree in co-relation 142271. Up to 12104 conditions per place. [2023-08-27 00:37:57,363 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 880 selfloop transitions, 214 changer transitions 10/1104 dead transitions. [2023-08-27 00:37:57,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1104 transitions, 28382 flow [2023-08-27 00:37:57,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 00:37:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 00:37:57,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1514 transitions. [2023-08-27 00:37:57,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3557330827067669 [2023-08-27 00:37:57,366 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1514 transitions. [2023-08-27 00:37:57,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1514 transitions. [2023-08-27 00:37:57,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:57,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1514 transitions. [2023-08-27 00:37:57,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.625) internal successors, (1514), 16 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:57,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 266.0) internal successors, (4522), 17 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states 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 00:37:57,370 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 266.0) internal successors, (4522), 17 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states 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 00:37:57,371 INFO L175 Difference]: Start difference. First operand has 365 places, 764 transitions, 18636 flow. Second operand 16 states and 1514 transitions. [2023-08-27 00:37:57,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1104 transitions, 28382 flow [2023-08-27 00:37:58,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 1104 transitions, 27681 flow, removed 0 selfloop flow, removed 16 redundant places. [2023-08-27 00:37:58,940 INFO L231 Difference]: Finished difference. Result has 373 places, 906 transitions, 22649 flow [2023-08-27 00:37:58,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=18130, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=22649, PETRI_PLACES=373, PETRI_TRANSITIONS=906} [2023-08-27 00:37:58,941 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2023-08-27 00:37:58,941 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 906 transitions, 22649 flow [2023-08-27 00:37:58,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 88.17647058823529) internal successors, (1499), 17 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states 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 00:37:58,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:58,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:58,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-08-27 00:37:59,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:59,142 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:37:59,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:59,143 INFO L85 PathProgramCache]: Analyzing trace with hash 982205343, now seen corresponding path program 4 times [2023-08-27 00:37:59,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:59,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571363084] [2023-08-27 00:37:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:59,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 00:37:59,160 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 00:37:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 00:37:59,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 00:37:59,191 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 00:37:59,192 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (36 of 37 remaining) [2023-08-27 00:37:59,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 37 remaining) [2023-08-27 00:37:59,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 37 remaining) [2023-08-27 00:37:59,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 37 remaining) [2023-08-27 00:37:59,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 37 remaining) [2023-08-27 00:37:59,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 37 remaining) [2023-08-27 00:37:59,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 37 remaining) [2023-08-27 00:37:59,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 37 remaining) [2023-08-27 00:37:59,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 37 remaining) [2023-08-27 00:37:59,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 37 remaining) [2023-08-27 00:37:59,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 37 remaining) [2023-08-27 00:37:59,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 37 remaining) [2023-08-27 00:37:59,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 37 remaining) [2023-08-27 00:37:59,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 37 remaining) [2023-08-27 00:37:59,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 37 remaining) [2023-08-27 00:37:59,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 37 remaining) [2023-08-27 00:37:59,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 37 remaining) [2023-08-27 00:37:59,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 37 remaining) [2023-08-27 00:37:59,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 37 remaining) [2023-08-27 00:37:59,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 37 remaining) [2023-08-27 00:37:59,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 37 remaining) [2023-08-27 00:37:59,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 37 remaining) [2023-08-27 00:37:59,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 37 remaining) [2023-08-27 00:37:59,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 37 remaining) [2023-08-27 00:37:59,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 37 remaining) [2023-08-27 00:37:59,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 37 remaining) [2023-08-27 00:37:59,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 37 remaining) [2023-08-27 00:37:59,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 37 remaining) [2023-08-27 00:37:59,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 37 remaining) [2023-08-27 00:37:59,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 37 remaining) [2023-08-27 00:37:59,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 37 remaining) [2023-08-27 00:37:59,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 37 remaining) [2023-08-27 00:37:59,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 37 remaining) [2023-08-27 00:37:59,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 37 remaining) [2023-08-27 00:37:59,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 37 remaining) [2023-08-27 00:37:59,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 37 remaining) [2023-08-27 00:37:59,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 37 remaining) [2023-08-27 00:37:59,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-27 00:37:59,197 INFO L445 BasicCegarLoop]: Path program histogram: [7, 7, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:59,202 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 00:37:59,202 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 00:37:59,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:37:59 BasicIcfg [2023-08-27 00:37:59,235 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 00:37:59,235 INFO L158 Benchmark]: Toolchain (without parser) took 134899.50ms. Allocated memory was 367.0MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 343.0MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. [2023-08-27 00:37:59,236 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 367.0MB. Free memory is still 343.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 00:37:59,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.50ms. Allocated memory is still 367.0MB. Free memory was 342.5MB in the beginning and 330.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 00:37:59,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.00ms. Allocated memory is still 367.0MB. Free memory was 330.9MB in the beginning and 328.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:37:59,236 INFO L158 Benchmark]: Boogie Preprocessor took 27.96ms. Allocated memory is still 367.0MB. Free memory was 328.8MB in the beginning and 327.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:37:59,236 INFO L158 Benchmark]: RCFGBuilder took 820.74ms. Allocated memory is still 367.0MB. Free memory was 327.2MB in the beginning and 331.2MB in the end (delta: -4.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2023-08-27 00:37:59,236 INFO L158 Benchmark]: TraceAbstraction took 133708.65ms. Allocated memory was 367.0MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 330.2MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-08-27 00:37:59,237 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 367.0MB. Free memory is still 343.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 276.50ms. Allocated memory is still 367.0MB. Free memory was 342.5MB in the beginning and 330.9MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.00ms. Allocated memory is still 367.0MB. Free memory was 330.9MB in the beginning and 328.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.96ms. Allocated memory is still 367.0MB. Free memory was 328.8MB in the beginning and 327.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 820.74ms. Allocated memory is still 367.0MB. Free memory was 327.2MB in the beginning and 331.2MB in the end (delta: -4.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * TraceAbstraction took 133708.65ms. Allocated memory was 367.0MB in the beginning and 7.3GB in the end (delta: 6.9GB). Free memory was 330.2MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 126 PlacesBefore, 41 PlacesAfterwards, 128 TransitionsBefore, 37 TransitionsAfterwards, 1628 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 4 ConcurrentYvCompositions, 6 ChoiceCompositions, 127 TotalNumberOfCompositions, 3190 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2181, independent: 2093, independent conditional: 0, independent unconditional: 2093, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 798, independent: 782, independent conditional: 0, independent unconditional: 782, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2181, independent: 1311, independent conditional: 0, independent unconditional: 1311, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 798, unknown conditional: 0, unknown unconditional: 798] , Statistics on independence cache: Total cache size (in pairs): 97, Positive cache size: 89, Positive conditional cache size: 0, Positive unconditional cache size: 89, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 21]: assertion can be violated assertion can be violated We found a FailurePath: [L41] 0 int* A; [L42] 0 int counter, N; [L75] 0 pthread_t t1, t2; [L77] 0 N = __VERIFIER_nondet_int() [L78] CALL, EXPR 0 create_fresh_int_array(N) [L93] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L93] RET 0 assume_abort_if_not(size >= 0) [L94] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L94] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L96] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L97] 0 int i = 0; VAL [A={0:0}, N=1, \old(size)=1, arr={-3:0}, counter=0, i=0, size=1] [L97] COND TRUE 0 i < size [L98] 0 arr[i] = __VERIFIER_nondet_int() [L97] 0 i++ VAL [A={0:0}, N=1, \old(size)=1, arr={-3:0}, counter=0, i=1, size=1] [L97] COND FALSE 0 !(i < size) [L100] 0 return arr; [L78] RET, EXPR 0 create_fresh_int_array(N) [L78] 0 A = create_fresh_int_array(N) [L81] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={-3:0}, N=1, counter=0, pthread_create(&t1, 0, thread1, 0)=-2, t1={5:0}, t2={3:0}] [L82] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={-3:0}, N=1, counter=0, pthread_create(&t2, 0, thread2, 0)=-1, t1={5:0}, t2={3:0}] [L62] 2 int i=0; VAL [A={-3:0}, N=1, counter=0, i=0] [L83] 0 \read(t1) VAL [A={-3:0}, N=1, \read(t1)=-2, counter=0, t1={5:0}, t2={3:0}] [L62] COND TRUE 2 i= b - 2147483648 [L104] CALL 2 assume_abort_if_not(b <= 0 || a >= b - 2147483648) [L38] COND FALSE 2 !(!cond) [L104] RET 2 assume_abort_if_not(b <= 0 || a >= b - 2147483648) [L105] EXPR 2 b >= 0 || a <= b + 2147483647 [L105] EXPR 2 b + 2147483647 [L105] EXPR 2 b >= 0 || a <= b + 2147483647 [L105] CALL 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L38] COND FALSE 2 !(!cond) [L105] RET 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L106] EXPR 2 a - b [L106] 2 return a - b; [L64] RET, EXPR 2 minus(counter, A[i]) [L64] 2 int tmp = minus(counter, A[i]); [L49] 1 int i=0; VAL [A={-3:0}, N=1, counter=0, i=0] [L49] COND TRUE 1 i= 0 || a >= -2147483648 - b [L110] EXPR 1 -2147483648 - b [L110] EXPR 1 b >= 0 || a >= -2147483648 - b [L110] CALL 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L38] COND FALSE 1 !(!cond) [L110] RET 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L111] EXPR 1 b <= 0 || a <= 2147483647 - b [L111] CALL 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L38] COND FALSE 1 !(!cond) [L111] RET 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L112] EXPR 1 a + b [L112] 1 return a + b; [L51] RET, EXPR 1 plus(counter, A[i]) [L51] 1 int tmp = plus(counter, A[i]); [L67] 2 counter = tmp [L62] 2 i++ VAL [A={-3:0}, N=1, counter=6, i=1, tmp=6] [L62] COND FALSE 2 !(i