/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/chl-word-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 23:59:20,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 23:59:21,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 23:59:21,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 23:59:21,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 23:59:21,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 23:59:21,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 23:59:21,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 23:59:21,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 23:59:21,098 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 23:59:21,098 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 23:59:21,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 23:59:21,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 23:59:21,100 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 23:59:21,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 23:59:21,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 23:59:21,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 23:59:21,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 23:59:21,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 23:59:21,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 23:59:21,101 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 23:59:21,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 23:59:21,101 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 23:59:21,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 23:59:21,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 23:59:21,102 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 23:59:21,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 23:59:21,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:59:21,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 23:59:21,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 23:59:21,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 23:59:21,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 23:59:21,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 23:59:21,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 23:59:21,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 23:59:21,104 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 23:59:21,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 23:59:21,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 23:59:21,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 23:59:21,337 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 23:59:21,337 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 23:59:21,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-08-26 23:59:22,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 23:59:22,379 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 23:59:22,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-08-26 23:59:22,384 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbefb2b1e/486d5c2794db4720a697a4a9dd6a89f2/FLAG721b64825 [2023-08-26 23:59:22,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbefb2b1e/486d5c2794db4720a697a4a9dd6a89f2 [2023-08-26 23:59:22,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 23:59:22,395 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 23:59:22,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 23:59:22,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 23:59:22,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 23:59:22,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d7a4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22, skipping insertion in model container [2023-08-26 23:59:22,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,413 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 23:59:22,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:59:22,561 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 23:59:22,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:59:22,607 INFO L206 MainTranslator]: Completed translation [2023-08-26 23:59:22,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22 WrapperNode [2023-08-26 23:59:22,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 23:59:22,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 23:59:22,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 23:59:22,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 23:59:22,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,658 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 192 [2023-08-26 23:59:22,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 23:59:22,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 23:59:22,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 23:59:22,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 23:59:22,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,687 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,688 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,689 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 23:59:22,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 23:59:22,692 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 23:59:22,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 23:59:22,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (1/1) ... [2023-08-26 23:59:22,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:59:22,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:59:22,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 23:59:22,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 23:59:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 23:59:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 23:59:22,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 23:59:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 23:59:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 23:59:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 23:59:22,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 23:59:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 23:59:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 23:59:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 23:59:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 23:59:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 23:59:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 23:59:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 23:59:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 23:59:22,756 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 23:59:22,857 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 23:59:22,864 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 23:59:23,260 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 23:59:23,268 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 23:59:23,268 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-26 23:59:23,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:59:23 BoogieIcfgContainer [2023-08-26 23:59:23,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 23:59:23,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 23:59:23,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 23:59:23,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 23:59:23,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:59:22" (1/3) ... [2023-08-26 23:59:23,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257d4a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:59:23, skipping insertion in model container [2023-08-26 23:59:23,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:59:22" (2/3) ... [2023-08-26 23:59:23,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257d4a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:59:23, skipping insertion in model container [2023-08-26 23:59:23,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:59:23" (3/3) ... [2023-08-26 23:59:23,292 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-08-26 23:59:23,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 23:59:23,303 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-08-26 23:59:23,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 23:59:23,407 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 23:59:23,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 334 transitions, 692 flow [2023-08-26 23:59:23,544 INFO L124 PetriNetUnfolderBase]: 28/331 cut-off events. [2023-08-26 23:59:23,545 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:59:23,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 331 events. 28/331 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 555 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 265. Up to 3 conditions per place. [2023-08-26 23:59:23,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 334 transitions, 692 flow [2023-08-26 23:59:23,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 320 transitions, 658 flow [2023-08-26 23:59:23,564 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 23:59:23,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 320 transitions, 658 flow [2023-08-26 23:59:23,582 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 320 transitions, 658 flow [2023-08-26 23:59:23,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 320 transitions, 658 flow [2023-08-26 23:59:23,618 INFO L124 PetriNetUnfolderBase]: 28/320 cut-off events. [2023-08-26 23:59:23,618 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:59:23,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 320 events. 28/320 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 555 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 265. Up to 3 conditions per place. [2023-08-26 23:59:23,625 INFO L119 LiptonReduction]: Number of co-enabled transitions 11934 [2023-08-26 23:59:31,028 INFO L134 LiptonReduction]: Checked pairs total: 17643 [2023-08-26 23:59:31,029 INFO L136 LiptonReduction]: Total number of compositions: 348 [2023-08-26 23:59:31,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 23:59:31,042 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;@53025649, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 23:59:31,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-08-26 23:59:31,043 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 23:59:31,043 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 23:59:31,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:59:31,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:31,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 23:59:31,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:31,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:31,047 INFO L85 PathProgramCache]: Analyzing trace with hash 41126, now seen corresponding path program 1 times [2023-08-26 23:59:31,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:31,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402537592] [2023-08-26 23:59:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:31,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:31,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:31,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402537592] [2023-08-26 23:59:31,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402537592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:31,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:59:31,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:59:31,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816177247] [2023-08-26 23:59:31,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:31,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:59:31,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:59:31,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:59:31,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 682 [2023-08-26 23:59:31,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:31,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:31,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 682 [2023-08-26 23:59:31,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:31,866 INFO L124 PetriNetUnfolderBase]: 6072/8213 cut-off events. [2023-08-26 23:59:31,866 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2023-08-26 23:59:31,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16782 conditions, 8213 events. 6072/8213 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 37721 event pairs, 4430 based on Foata normal form. 0/4029 useless extension candidates. Maximal degree in co-relation 15562. Up to 8209 conditions per place. [2023-08-26 23:59:31,901 INFO L140 encePairwiseOnDemand]: 669/682 looper letters, 58 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-08-26 23:59:31,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 278 flow [2023-08-26 23:59:31,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:59:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:59:31,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2023-08-26 23:59:31,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45992179863147603 [2023-08-26 23:59:31,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2023-08-26 23:59:31,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2023-08-26 23:59:31,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:31,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2023-08-26 23:59:31,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:31,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:31,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:31,926 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 136 flow. Second operand 3 states and 941 transitions. [2023-08-26 23:59:31,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 278 flow [2023-08-26 23:59:31,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 266 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 23:59:31,932 INFO L231 Difference]: Finished difference. Result has 56 places, 65 transitions, 188 flow [2023-08-26 23:59:31,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=56, PETRI_TRANSITIONS=65} [2023-08-26 23:59:31,935 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places. [2023-08-26 23:59:31,935 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 65 transitions, 188 flow [2023-08-26 23:59:31,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:31,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:31,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:59:31,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 23:59:31,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:31,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:31,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1276165, now seen corresponding path program 1 times [2023-08-26 23:59:31,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:31,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572392485] [2023-08-26 23:59:31,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:31,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:31,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:31,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:31,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572392485] [2023-08-26 23:59:31,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572392485] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:59:31,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582565339] [2023-08-26 23:59:31,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:31,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:31,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:59:31,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:59:32,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 23:59:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:32,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:59:32,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:59:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:32,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:59:32,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582565339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:32,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:59:32,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 23:59:32,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573907951] [2023-08-26 23:59:32,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:32,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:59:32,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:32,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:59:32,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:59:32,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 682 [2023-08-26 23:59:32,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 65 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 290.75) internal successors, (1163), 4 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:32,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:32,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 682 [2023-08-26 23:59:32,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:32,614 INFO L124 PetriNetUnfolderBase]: 6072/8210 cut-off events. [2023-08-26 23:59:32,614 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-26 23:59:32,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16580 conditions, 8210 events. 6072/8210 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 37720 event pairs, 4430 based on Foata normal form. 0/4033 useless extension candidates. Maximal degree in co-relation 16521. Up to 8197 conditions per place. [2023-08-26 23:59:32,642 INFO L140 encePairwiseOnDemand]: 672/682 looper letters, 54 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2023-08-26 23:59:32,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 300 flow [2023-08-26 23:59:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:59:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:59:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1225 transitions. [2023-08-26 23:59:32,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44904692082111436 [2023-08-26 23:59:32,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1225 transitions. [2023-08-26 23:59:32,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1225 transitions. [2023-08-26 23:59:32,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:32,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1225 transitions. [2023-08-26 23:59:32,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.25) internal successors, (1225), 4 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:32,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:32,652 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:32,652 INFO L175 Difference]: Start difference. First operand has 56 places, 65 transitions, 188 flow. Second operand 4 states and 1225 transitions. [2023-08-26 23:59:32,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 300 flow [2023-08-26 23:59:32,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:59:32,654 INFO L231 Difference]: Finished difference. Result has 54 places, 62 transitions, 178 flow [2023-08-26 23:59:32,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=54, PETRI_TRANSITIONS=62} [2023-08-26 23:59:32,654 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2023-08-26 23:59:32,654 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 62 transitions, 178 flow [2023-08-26 23:59:32,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.75) internal successors, (1163), 4 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:32,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:32,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:59:32,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 23:59:32,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:32,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:32,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:32,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1276166, now seen corresponding path program 1 times [2023-08-26 23:59:32,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:32,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488871524] [2023-08-26 23:59:32,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:32,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:32,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:32,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488871524] [2023-08-26 23:59:32,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488871524] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:59:32,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047231184] [2023-08-26 23:59:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:32,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:32,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:59:32,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:59:32,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 23:59:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:33,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:59:33,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:59:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:33,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:59:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:33,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047231184] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:59:33,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:59:33,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-26 23:59:33,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852812530] [2023-08-26 23:59:33,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:59:33,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:59:33,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:33,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:59:33,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:59:33,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 682 [2023-08-26 23:59:33,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 62 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 291.14285714285717) internal successors, (2038), 7 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) [2023-08-26 23:59:33,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:33,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 682 [2023-08-26 23:59:33,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:33,479 INFO L124 PetriNetUnfolderBase]: 6081/8228 cut-off events. [2023-08-26 23:59:33,480 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-26 23:59:33,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16644 conditions, 8228 events. 6081/8228 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 37809 event pairs, 4430 based on Foata normal form. 0/4052 useless extension candidates. Maximal degree in co-relation 16521. Up to 8209 conditions per place. [2023-08-26 23:59:33,513 INFO L140 encePairwiseOnDemand]: 672/682 looper letters, 55 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2023-08-26 23:59:33,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 80 transitions, 428 flow [2023-08-26 23:59:33,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:59:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:59:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1829 transitions. [2023-08-26 23:59:33,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2023-08-26 23:59:33,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1829 transitions. [2023-08-26 23:59:33,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1829 transitions. [2023-08-26 23:59:33,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:33,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1829 transitions. [2023-08-26 23:59:33,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 304.8333333333333) internal successors, (1829), 6 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:33,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 682.0) internal successors, (4774), 7 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:33,527 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 682.0) internal successors, (4774), 7 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:33,527 INFO L175 Difference]: Start difference. First operand has 54 places, 62 transitions, 178 flow. Second operand 6 states and 1829 transitions. [2023-08-26 23:59:33,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 80 transitions, 428 flow [2023-08-26 23:59:33,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 80 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:59:33,530 INFO L231 Difference]: Finished difference. Result has 60 places, 80 transitions, 352 flow [2023-08-26 23:59:33,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=60, PETRI_TRANSITIONS=80} [2023-08-26 23:59:33,531 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-26 23:59:33,531 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 80 transitions, 352 flow [2023-08-26 23:59:33,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 291.14285714285717) internal successors, (2038), 7 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) [2023-08-26 23:59:33,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:33,533 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-26 23:59:33,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 23:59:33,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-26 23:59:33,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:33,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:33,738 INFO L85 PathProgramCache]: Analyzing trace with hash -635193178, now seen corresponding path program 2 times [2023-08-26 23:59:33,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:33,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071571298] [2023-08-26 23:59:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:33,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:33,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071571298] [2023-08-26 23:59:33,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071571298] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:59:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788642884] [2023-08-26 23:59:33,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:59:33,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:33,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:59:33,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:59:33,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 23:59:33,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:59:33,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:59:33,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 23:59:33,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:59:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:59:33,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:59:33,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788642884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:33,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:59:33,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-26 23:59:33,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561761310] [2023-08-26 23:59:33,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:33,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:59:33,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:33,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:59:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:59:33,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 682 [2023-08-26 23:59:33,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 80 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:33,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:33,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 682 [2023-08-26 23:59:33,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:34,370 INFO L124 PetriNetUnfolderBase]: 6081/8227 cut-off events. [2023-08-26 23:59:34,370 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-26 23:59:34,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16683 conditions, 8227 events. 6081/8227 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 37764 event pairs, 4430 based on Foata normal form. 1/4056 useless extension candidates. Maximal degree in co-relation 16595. Up to 8222 conditions per place. [2023-08-26 23:59:34,395 INFO L140 encePairwiseOnDemand]: 679/682 looper letters, 73 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-08-26 23:59:34,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 500 flow [2023-08-26 23:59:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:59:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:59:34,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2023-08-26 23:59:34,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45698924731182794 [2023-08-26 23:59:34,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2023-08-26 23:59:34,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2023-08-26 23:59:34,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:34,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2023-08-26 23:59:34,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:34,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:34,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:34,403 INFO L175 Difference]: Start difference. First operand has 60 places, 80 transitions, 352 flow. Second operand 3 states and 935 transitions. [2023-08-26 23:59:34,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 500 flow [2023-08-26 23:59:34,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 463 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-26 23:59:34,406 INFO L231 Difference]: Finished difference. Result has 60 places, 79 transitions, 317 flow [2023-08-26 23:59:34,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=60, PETRI_TRANSITIONS=79} [2023-08-26 23:59:34,406 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-26 23:59:34,406 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 79 transitions, 317 flow [2023-08-26 23:59:34,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:34,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:34,407 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-26 23:59:34,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 23:59:34,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:34,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:34,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:34,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1810658205, now seen corresponding path program 1 times [2023-08-26 23:59:34,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:34,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412233975] [2023-08-26 23:59:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:34,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:34,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:34,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412233975] [2023-08-26 23:59:34,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412233975] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:59:34,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263818694] [2023-08-26 23:59:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:34,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:34,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:59:34,672 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:59:34,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 23:59:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:34,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 23:59:34,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:59:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:34,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:59:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:34,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263818694] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:59:34,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:59:34,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 23:59:34,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740182968] [2023-08-26 23:59:34,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:59:34,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 23:59:34,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 23:59:34,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 23:59:34,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 682 [2023-08-26 23:59:34,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 79 transitions, 317 flow. Second operand has 13 states, 13 states have (on average 291.15384615384613) internal successors, (3785), 13 states have internal predecessors, (3785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:34,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:34,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 682 [2023-08-26 23:59:34,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:35,265 INFO L124 PetriNetUnfolderBase]: 6099/8263 cut-off events. [2023-08-26 23:59:35,265 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-08-26 23:59:35,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16807 conditions, 8263 events. 6099/8263 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 38010 event pairs, 4430 based on Foata normal form. 12/4103 useless extension candidates. Maximal degree in co-relation 16703. Up to 8214 conditions per place. [2023-08-26 23:59:35,291 INFO L140 encePairwiseOnDemand]: 673/682 looper letters, 54 selfloop transitions, 61 changer transitions 0/115 dead transitions. [2023-08-26 23:59:35,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 115 transitions, 781 flow [2023-08-26 23:59:35,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 23:59:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 23:59:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3607 transitions. [2023-08-26 23:59:35,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44073802541544477 [2023-08-26 23:59:35,298 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3607 transitions. [2023-08-26 23:59:35,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3607 transitions. [2023-08-26 23:59:35,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:35,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3607 transitions. [2023-08-26 23:59:35,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 300.5833333333333) internal successors, (3607), 12 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:35,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:35,313 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 682.0) internal successors, (8866), 13 states have internal predecessors, (8866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:35,313 INFO L175 Difference]: Start difference. First operand has 60 places, 79 transitions, 317 flow. Second operand 12 states and 3607 transitions. [2023-08-26 23:59:35,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 115 transitions, 781 flow [2023-08-26 23:59:35,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 115 transitions, 757 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:59:35,316 INFO L231 Difference]: Finished difference. Result has 75 places, 115 transitions, 735 flow [2023-08-26 23:59:35,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=735, PETRI_PLACES=75, PETRI_TRANSITIONS=115} [2023-08-26 23:59:35,316 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-08-26 23:59:35,316 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 115 transitions, 735 flow [2023-08-26 23:59:35,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 291.15384615384613) internal successors, (3785), 13 states have internal predecessors, (3785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:35,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:35,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:35,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 23:59:35,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:35,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:35,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:35,525 INFO L85 PathProgramCache]: Analyzing trace with hash -68804376, now seen corresponding path program 1 times [2023-08-26 23:59:35,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:35,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122534287] [2023-08-26 23:59:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:35,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:35,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:35,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122534287] [2023-08-26 23:59:35,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122534287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:35,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:59:35,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:59:35,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983311827] [2023-08-26 23:59:35,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:35,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:59:35,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:35,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:59:35,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:59:35,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 682 [2023-08-26 23:59:35,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 115 transitions, 735 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:35,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:35,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 682 [2023-08-26 23:59:35,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:36,160 INFO L124 PetriNetUnfolderBase]: 8395/11271 cut-off events. [2023-08-26 23:59:36,160 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-08-26 23:59:36,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22978 conditions, 11271 events. 8395/11271 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 54083 event pairs, 4430 based on Foata normal form. 0/5767 useless extension candidates. Maximal degree in co-relation 22860. Up to 8620 conditions per place. [2023-08-26 23:59:36,192 INFO L140 encePairwiseOnDemand]: 676/682 looper letters, 143 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2023-08-26 23:59:36,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 147 transitions, 1095 flow [2023-08-26 23:59:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:59:36,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:59:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1001 transitions. [2023-08-26 23:59:36,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489247311827957 [2023-08-26 23:59:36,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1001 transitions. [2023-08-26 23:59:36,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1001 transitions. [2023-08-26 23:59:36,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:36,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1001 transitions. [2023-08-26 23:59:36,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:36,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:36,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:36,199 INFO L175 Difference]: Start difference. First operand has 75 places, 115 transitions, 735 flow. Second operand 3 states and 1001 transitions. [2023-08-26 23:59:36,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 147 transitions, 1095 flow [2023-08-26 23:59:36,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 147 transitions, 917 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-08-26 23:59:36,202 INFO L231 Difference]: Finished difference. Result has 73 places, 118 transitions, 585 flow [2023-08-26 23:59:36,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=585, PETRI_PLACES=73, PETRI_TRANSITIONS=118} [2023-08-26 23:59:36,203 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2023-08-26 23:59:36,203 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 118 transitions, 585 flow [2023-08-26 23:59:36,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:36,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:36,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:36,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 23:59:36,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:36,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash -68803789, now seen corresponding path program 1 times [2023-08-26 23:59:36,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:36,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407804824] [2023-08-26 23:59:36,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:36,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:36,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:36,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407804824] [2023-08-26 23:59:36,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407804824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:36,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:59:36,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:59:36,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434967910] [2023-08-26 23:59:36,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:36,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:59:36,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:36,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:59:36,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:59:36,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 682 [2023-08-26 23:59:36,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 118 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 252.6) internal successors, (1263), 5 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:36,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:36,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 682 [2023-08-26 23:59:36,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:37,469 INFO L124 PetriNetUnfolderBase]: 15986/21371 cut-off events. [2023-08-26 23:59:37,469 INFO L125 PetriNetUnfolderBase]: For 3357/3357 co-relation queries the response was YES. [2023-08-26 23:59:37,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47627 conditions, 21371 events. 15986/21371 cut-off events. For 3357/3357 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 107545 event pairs, 11218 based on Foata normal form. 0/12809 useless extension candidates. Maximal degree in co-relation 47467. Up to 10751 conditions per place. [2023-08-26 23:59:37,553 INFO L140 encePairwiseOnDemand]: 676/682 looper letters, 197 selfloop transitions, 15 changer transitions 0/212 dead transitions. [2023-08-26 23:59:37,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 212 transitions, 1448 flow [2023-08-26 23:59:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:59:37,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:59:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1364 transitions. [2023-08-26 23:59:37,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-08-26 23:59:37,556 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1364 transitions. [2023-08-26 23:59:37,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1364 transitions. [2023-08-26 23:59:37,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:37,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1364 transitions. [2023-08-26 23:59:37,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 272.8) internal successors, (1364), 5 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) [2023-08-26 23:59:37,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:37,573 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:37,573 INFO L175 Difference]: Start difference. First operand has 73 places, 118 transitions, 585 flow. Second operand 5 states and 1364 transitions. [2023-08-26 23:59:37,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 212 transitions, 1448 flow [2023-08-26 23:59:37,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 212 transitions, 1440 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:59:37,581 INFO L231 Difference]: Finished difference. Result has 79 places, 130 transitions, 739 flow [2023-08-26 23:59:37,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=739, PETRI_PLACES=79, PETRI_TRANSITIONS=130} [2023-08-26 23:59:37,581 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2023-08-26 23:59:37,583 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 130 transitions, 739 flow [2023-08-26 23:59:37,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 252.6) internal successors, (1263), 5 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:37,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:37,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:37,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 23:59:37,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:37,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1053635413, now seen corresponding path program 1 times [2023-08-26 23:59:37,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:37,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925863887] [2023-08-26 23:59:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:37,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:37,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:37,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925863887] [2023-08-26 23:59:37,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925863887] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:59:37,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54356144] [2023-08-26 23:59:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:37,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:37,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:59:37,673 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) [2023-08-26 23:59:37,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 23:59:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:37,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 23:59:37,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:59:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:37,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:59:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:37,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54356144] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 23:59:37,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 23:59:37,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 2] total 8 [2023-08-26 23:59:37,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322566742] [2023-08-26 23:59:37,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:37,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:59:37,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:37,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:59:37,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-26 23:59:37,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 682 [2023-08-26 23:59:37,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 130 transitions, 739 flow. Second operand has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 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) [2023-08-26 23:59:37,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:37,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 682 [2023-08-26 23:59:37,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:39,015 INFO L124 PetriNetUnfolderBase]: 15323/20530 cut-off events. [2023-08-26 23:59:39,015 INFO L125 PetriNetUnfolderBase]: For 3653/3653 co-relation queries the response was YES. [2023-08-26 23:59:39,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45082 conditions, 20530 events. 15323/20530 cut-off events. For 3653/3653 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 103078 event pairs, 10825 based on Foata normal form. 356/13102 useless extension candidates. Maximal degree in co-relation 44914. Up to 20530 conditions per place. [2023-08-26 23:59:39,083 INFO L140 encePairwiseOnDemand]: 680/682 looper letters, 127 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2023-08-26 23:59:39,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 128 transitions, 985 flow [2023-08-26 23:59:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:59:39,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:59:39,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 808 transitions. [2023-08-26 23:59:39,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949169110459433 [2023-08-26 23:59:39,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 808 transitions. [2023-08-26 23:59:39,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 808 transitions. [2023-08-26 23:59:39,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:39,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 808 transitions. [2023-08-26 23:59:39,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:39,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:39,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:39,090 INFO L175 Difference]: Start difference. First operand has 79 places, 130 transitions, 739 flow. Second operand 3 states and 808 transitions. [2023-08-26 23:59:39,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 128 transitions, 985 flow [2023-08-26 23:59:39,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 128 transitions, 977 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 23:59:39,097 INFO L231 Difference]: Finished difference. Result has 78 places, 128 transitions, 723 flow [2023-08-26 23:59:39,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=723, PETRI_PLACES=78, PETRI_TRANSITIONS=128} [2023-08-26 23:59:39,101 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2023-08-26 23:59:39,101 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 128 transitions, 723 flow [2023-08-26 23:59:39,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 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) [2023-08-26 23:59:39,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:39,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:39,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 23:59:39,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:39,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:39,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1053635475, now seen corresponding path program 1 times [2023-08-26 23:59:39,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:39,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625809044] [2023-08-26 23:59:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:39,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:39,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:39,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625809044] [2023-08-26 23:59:39,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625809044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:59:39,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807508970] [2023-08-26 23:59:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:39,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:39,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:59:39,403 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) [2023-08-26 23:59:39,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 23:59:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:39,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:59:39,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:59:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:59:39,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:59:39,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807508970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:39,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:59:39,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 23:59:39,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179936012] [2023-08-26 23:59:39,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:39,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:59:39,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:39,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:59:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:59:39,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 682 [2023-08-26 23:59:39,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 128 transitions, 723 flow. Second operand has 4 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:39,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:39,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 682 [2023-08-26 23:59:39,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:40,537 INFO L124 PetriNetUnfolderBase]: 13028/17437 cut-off events. [2023-08-26 23:59:40,537 INFO L125 PetriNetUnfolderBase]: For 2598/2598 co-relation queries the response was YES. [2023-08-26 23:59:40,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38307 conditions, 17437 events. 13028/17437 cut-off events. For 2598/2598 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 84866 event pairs, 9010 based on Foata normal form. 156/11153 useless extension candidates. Maximal degree in co-relation 38285. Up to 17425 conditions per place. [2023-08-26 23:59:40,599 INFO L140 encePairwiseOnDemand]: 678/682 looper letters, 114 selfloop transitions, 12 changer transitions 0/126 dead transitions. [2023-08-26 23:59:40,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 126 transitions, 969 flow [2023-08-26 23:59:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:59:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:59:40,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1202 transitions. [2023-08-26 23:59:40,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4406158357771261 [2023-08-26 23:59:40,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1202 transitions. [2023-08-26 23:59:40,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1202 transitions. [2023-08-26 23:59:40,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:40,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1202 transitions. [2023-08-26 23:59:40,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:40,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:40,607 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:40,607 INFO L175 Difference]: Start difference. First operand has 78 places, 128 transitions, 723 flow. Second operand 4 states and 1202 transitions. [2023-08-26 23:59:40,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 126 transitions, 969 flow [2023-08-26 23:59:40,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 126 transitions, 957 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:59:40,613 INFO L231 Difference]: Finished difference. Result has 77 places, 126 transitions, 729 flow [2023-08-26 23:59:40,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=729, PETRI_PLACES=77, PETRI_TRANSITIONS=126} [2023-08-26 23:59:40,613 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 19 predicate places. [2023-08-26 23:59:40,614 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 126 transitions, 729 flow [2023-08-26 23:59:40,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:40,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:40,614 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:40,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 23:59:40,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:40,819 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:40,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:40,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1696440427, now seen corresponding path program 1 times [2023-08-26 23:59:40,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:40,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439555102] [2023-08-26 23:59:40,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:40,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:40,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:40,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439555102] [2023-08-26 23:59:40,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439555102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:40,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:59:40,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:59:40,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942871159] [2023-08-26 23:59:40,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:40,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:59:40,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:40,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:59:40,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:59:40,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 682 [2023-08-26 23:59:40,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 126 transitions, 729 flow. Second operand has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:40,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:40,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 682 [2023-08-26 23:59:40,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:41,720 INFO L124 PetriNetUnfolderBase]: 12176/16273 cut-off events. [2023-08-26 23:59:41,720 INFO L125 PetriNetUnfolderBase]: For 612/612 co-relation queries the response was YES. [2023-08-26 23:59:41,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35654 conditions, 16273 events. 12176/16273 cut-off events. For 612/612 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 83464 event pairs, 2210 based on Foata normal form. 0/10561 useless extension candidates. Maximal degree in co-relation 35632. Up to 10788 conditions per place. [2023-08-26 23:59:41,768 INFO L140 encePairwiseOnDemand]: 678/682 looper letters, 145 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2023-08-26 23:59:41,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 150 transitions, 1077 flow [2023-08-26 23:59:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:59:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:59:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 989 transitions. [2023-08-26 23:59:41,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4833822091886608 [2023-08-26 23:59:41,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 989 transitions. [2023-08-26 23:59:41,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 989 transitions. [2023-08-26 23:59:41,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:41,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 989 transitions. [2023-08-26 23:59:41,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:41,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:41,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:41,775 INFO L175 Difference]: Start difference. First operand has 77 places, 126 transitions, 729 flow. Second operand 3 states and 989 transitions. [2023-08-26 23:59:41,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 150 transitions, 1077 flow [2023-08-26 23:59:41,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 150 transitions, 1064 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:59:41,778 INFO L231 Difference]: Finished difference. Result has 76 places, 125 transitions, 722 flow [2023-08-26 23:59:41,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=722, PETRI_PLACES=76, PETRI_TRANSITIONS=125} [2023-08-26 23:59:41,779 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2023-08-26 23:59:41,779 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 125 transitions, 722 flow [2023-08-26 23:59:41,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:41,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:41,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:41,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 23:59:41,779 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:41,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:41,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1696440428, now seen corresponding path program 1 times [2023-08-26 23:59:41,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:41,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124680977] [2023-08-26 23:59:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:41,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:59:41,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:41,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124680977] [2023-08-26 23:59:41,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124680977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:41,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:59:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:59:41,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497446733] [2023-08-26 23:59:41,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:41,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:59:41,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:41,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:59:41,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:59:41,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 682 [2023-08-26 23:59:41,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 125 transitions, 722 flow. Second operand has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:41,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:41,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 682 [2023-08-26 23:59:41,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:42,522 INFO L124 PetriNetUnfolderBase]: 8144/10993 cut-off events. [2023-08-26 23:59:42,522 INFO L125 PetriNetUnfolderBase]: For 3290/3290 co-relation queries the response was YES. [2023-08-26 23:59:42,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25153 conditions, 10993 events. 8144/10993 cut-off events. For 3290/3290 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 50774 event pairs, 5270 based on Foata normal form. 156/7257 useless extension candidates. Maximal degree in co-relation 25132. Up to 8147 conditions per place. [2023-08-26 23:59:42,559 INFO L140 encePairwiseOnDemand]: 676/682 looper letters, 216 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2023-08-26 23:59:42,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 221 transitions, 1544 flow [2023-08-26 23:59:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:59:42,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:59:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1386 transitions. [2023-08-26 23:59:42,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2023-08-26 23:59:42,563 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1386 transitions. [2023-08-26 23:59:42,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1386 transitions. [2023-08-26 23:59:42,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:42,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1386 transitions. [2023-08-26 23:59:42,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:42,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:42,568 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:42,568 INFO L175 Difference]: Start difference. First operand has 76 places, 125 transitions, 722 flow. Second operand 5 states and 1386 transitions. [2023-08-26 23:59:42,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 221 transitions, 1544 flow [2023-08-26 23:59:42,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 221 transitions, 1530 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:59:42,578 INFO L231 Difference]: Finished difference. Result has 80 places, 127 transitions, 741 flow [2023-08-26 23:59:42,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=741, PETRI_PLACES=80, PETRI_TRANSITIONS=127} [2023-08-26 23:59:42,579 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 22 predicate places. [2023-08-26 23:59:42,579 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 127 transitions, 741 flow [2023-08-26 23:59:42,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:42,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:42,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:42,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 23:59:42,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:42,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1687607874, now seen corresponding path program 1 times [2023-08-26 23:59:42,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557882005] [2023-08-26 23:59:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:42,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:42,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:42,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:42,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557882005] [2023-08-26 23:59:42,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557882005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:42,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:59:42,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:59:42,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711933298] [2023-08-26 23:59:42,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:42,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:59:42,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:59:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:59:42,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 682 [2023-08-26 23:59:42,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 127 transitions, 741 flow. Second operand has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:42,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:42,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 682 [2023-08-26 23:59:42,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:43,614 INFO L124 PetriNetUnfolderBase]: 11376/15217 cut-off events. [2023-08-26 23:59:43,614 INFO L125 PetriNetUnfolderBase]: For 5475/5475 co-relation queries the response was YES. [2023-08-26 23:59:43,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34834 conditions, 15217 events. 11376/15217 cut-off events. For 5475/5475 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 72490 event pairs, 5610 based on Foata normal form. 0/10053 useless extension candidates. Maximal degree in co-relation 34810. Up to 11490 conditions per place. [2023-08-26 23:59:43,677 INFO L140 encePairwiseOnDemand]: 676/682 looper letters, 156 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2023-08-26 23:59:43,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 160 transitions, 1163 flow [2023-08-26 23:59:43,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:59:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:59:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 993 transitions. [2023-08-26 23:59:43,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48533724340175954 [2023-08-26 23:59:43,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 993 transitions. [2023-08-26 23:59:43,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 993 transitions. [2023-08-26 23:59:43,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:43,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 993 transitions. [2023-08-26 23:59:43,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:43,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:43,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:43,683 INFO L175 Difference]: Start difference. First operand has 80 places, 127 transitions, 741 flow. Second operand 3 states and 993 transitions. [2023-08-26 23:59:43,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 160 transitions, 1163 flow [2023-08-26 23:59:43,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 160 transitions, 1158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:59:43,690 INFO L231 Difference]: Finished difference. Result has 81 places, 130 transitions, 764 flow [2023-08-26 23:59:43,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=764, PETRI_PLACES=81, PETRI_TRANSITIONS=130} [2023-08-26 23:59:43,690 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-08-26 23:59:43,690 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 130 transitions, 764 flow [2023-08-26 23:59:43,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:43,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:43,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:43,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 23:59:43,691 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:43,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:43,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1687606595, now seen corresponding path program 1 times [2023-08-26 23:59:43,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:43,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041364124] [2023-08-26 23:59:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:43,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:43,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:43,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041364124] [2023-08-26 23:59:43,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041364124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:43,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:59:43,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:59:43,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936823304] [2023-08-26 23:59:43,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:43,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:59:43,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:43,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:59:43,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:59:43,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 682 [2023-08-26 23:59:43,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 130 transitions, 764 flow. Second operand has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:43,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:43,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 682 [2023-08-26 23:59:43,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:45,645 INFO L124 PetriNetUnfolderBase]: 21576/28703 cut-off events. [2023-08-26 23:59:45,645 INFO L125 PetriNetUnfolderBase]: For 13582/13582 co-relation queries the response was YES. [2023-08-26 23:59:45,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71295 conditions, 28703 events. 21576/28703 cut-off events. For 13582/13582 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 144029 event pairs, 14388 based on Foata normal form. 0/21491 useless extension candidates. Maximal degree in co-relation 71271. Up to 14420 conditions per place. [2023-08-26 23:59:45,811 INFO L140 encePairwiseOnDemand]: 676/682 looper letters, 143 selfloop transitions, 36 changer transitions 0/179 dead transitions. [2023-08-26 23:59:45,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 179 transitions, 1282 flow [2023-08-26 23:59:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:59:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:59:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1350 transitions. [2023-08-26 23:59:45,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2023-08-26 23:59:45,815 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1350 transitions. [2023-08-26 23:59:45,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1350 transitions. [2023-08-26 23:59:45,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:45,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1350 transitions. [2023-08-26 23:59:45,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:45,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:45,820 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:45,820 INFO L175 Difference]: Start difference. First operand has 81 places, 130 transitions, 764 flow. Second operand 5 states and 1350 transitions. [2023-08-26 23:59:45,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 179 transitions, 1282 flow [2023-08-26 23:59:45,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 179 transitions, 1274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:59:45,833 INFO L231 Difference]: Finished difference. Result has 86 places, 131 transitions, 853 flow [2023-08-26 23:59:45,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=853, PETRI_PLACES=86, PETRI_TRANSITIONS=131} [2023-08-26 23:59:45,833 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-08-26 23:59:45,834 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 131 transitions, 853 flow [2023-08-26 23:59:45,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:45,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:45,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:45,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 23:59:45,834 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:45,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:45,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1760935873, now seen corresponding path program 1 times [2023-08-26 23:59:45,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:45,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961416632] [2023-08-26 23:59:45,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:45,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:59:45,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:45,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961416632] [2023-08-26 23:59:45,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961416632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:45,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:59:45,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:59:45,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217134050] [2023-08-26 23:59:45,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:45,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:59:45,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:59:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:59:45,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 682 [2023-08-26 23:59:45,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 131 transitions, 853 flow. Second operand has 5 states, 5 states have (on average 253.2) internal successors, (1266), 5 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) [2023-08-26 23:59:45,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:45,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 682 [2023-08-26 23:59:45,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:49,256 INFO L124 PetriNetUnfolderBase]: 42186/56157 cut-off events. [2023-08-26 23:59:49,256 INFO L125 PetriNetUnfolderBase]: For 27181/27181 co-relation queries the response was YES. [2023-08-26 23:59:49,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137926 conditions, 56157 events. 42186/56157 cut-off events. For 27181/27181 co-relation queries the response was YES. Maximal size of possible extension queue 1816. Compared 309301 event pairs, 27720 based on Foata normal form. 496/43911 useless extension candidates. Maximal degree in co-relation 137901. Up to 27759 conditions per place. [2023-08-26 23:59:49,526 INFO L140 encePairwiseOnDemand]: 677/682 looper letters, 215 selfloop transitions, 15 changer transitions 0/230 dead transitions. [2023-08-26 23:59:49,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 230 transitions, 1721 flow [2023-08-26 23:59:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:59:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:59:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1375 transitions. [2023-08-26 23:59:49,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2023-08-26 23:59:49,529 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1375 transitions. [2023-08-26 23:59:49,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1375 transitions. [2023-08-26 23:59:49,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:49,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1375 transitions. [2023-08-26 23:59:49,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:49,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:49,534 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:49,534 INFO L175 Difference]: Start difference. First operand has 86 places, 131 transitions, 853 flow. Second operand 5 states and 1375 transitions. [2023-08-26 23:59:49,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 230 transitions, 1721 flow [2023-08-26 23:59:49,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 230 transitions, 1684 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 23:59:49,550 INFO L231 Difference]: Finished difference. Result has 91 places, 132 transitions, 873 flow [2023-08-26 23:59:49,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=873, PETRI_PLACES=91, PETRI_TRANSITIONS=132} [2023-08-26 23:59:49,551 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places. [2023-08-26 23:59:49,551 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 132 transitions, 873 flow [2023-08-26 23:59:49,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 253.2) internal successors, (1266), 5 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) [2023-08-26 23:59:49,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:49,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:49,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 23:59:49,552 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:49,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:49,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1760935666, now seen corresponding path program 1 times [2023-08-26 23:59:49,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:49,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050760577] [2023-08-26 23:59:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:49,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:49,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:49,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050760577] [2023-08-26 23:59:49,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050760577] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:59:49,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321375685] [2023-08-26 23:59:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:49,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:49,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:59:49,638 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) [2023-08-26 23:59:49,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 23:59:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:49,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:59:49,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:59:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:59:49,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:59:49,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321375685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:49,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:59:49,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-26 23:59:49,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202973586] [2023-08-26 23:59:49,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:49,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:59:49,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:49,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:59:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:59:49,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 682 [2023-08-26 23:59:49,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 132 transitions, 873 flow. Second operand has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:49,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:49,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 682 [2023-08-26 23:59:49,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:53,147 INFO L124 PetriNetUnfolderBase]: 40818/54293 cut-off events. [2023-08-26 23:59:53,147 INFO L125 PetriNetUnfolderBase]: For 27683/27683 co-relation queries the response was YES. [2023-08-26 23:59:53,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133675 conditions, 54293 events. 40818/54293 cut-off events. For 27683/27683 co-relation queries the response was YES. Maximal size of possible extension queue 1738. Compared 296720 event pairs, 27192 based on Foata normal form. 496/42435 useless extension candidates. Maximal degree in co-relation 133648. Up to 54281 conditions per place. [2023-08-26 23:59:53,439 INFO L140 encePairwiseOnDemand]: 679/682 looper letters, 118 selfloop transitions, 12 changer transitions 0/130 dead transitions. [2023-08-26 23:59:53,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 130 transitions, 1120 flow [2023-08-26 23:59:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:59:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:59:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1199 transitions. [2023-08-26 23:59:53,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43951612903225806 [2023-08-26 23:59:53,441 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1199 transitions. [2023-08-26 23:59:53,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1199 transitions. [2023-08-26 23:59:53,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:53,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1199 transitions. [2023-08-26 23:59:53,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.75) internal successors, (1199), 4 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:53,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:53,445 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:53,445 INFO L175 Difference]: Start difference. First operand has 91 places, 132 transitions, 873 flow. Second operand 4 states and 1199 transitions. [2023-08-26 23:59:53,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 130 transitions, 1120 flow [2023-08-26 23:59:53,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 1053 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-26 23:59:53,459 INFO L231 Difference]: Finished difference. Result has 88 places, 130 transitions, 817 flow [2023-08-26 23:59:53,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=817, PETRI_PLACES=88, PETRI_TRANSITIONS=130} [2023-08-26 23:59:53,460 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2023-08-26 23:59:53,460 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 130 transitions, 817 flow [2023-08-26 23:59:53,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:53,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:53,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:53,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-26 23:59:53,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:59:53,664 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:53,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash -774458672, now seen corresponding path program 1 times [2023-08-26 23:59:53,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:53,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121533648] [2023-08-26 23:59:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:53,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:53,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121533648] [2023-08-26 23:59:53,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121533648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:53,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:59:53,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:59:53,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925636228] [2023-08-26 23:59:53,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:53,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:59:53,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:53,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:59:53,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:59:53,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 682 [2023-08-26 23:59:53,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 130 transitions, 817 flow. Second operand has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:53,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:53,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 682 [2023-08-26 23:59:53,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:59:58,175 INFO L124 PetriNetUnfolderBase]: 52306/67705 cut-off events. [2023-08-26 23:59:58,176 INFO L125 PetriNetUnfolderBase]: For 28616/28616 co-relation queries the response was YES. [2023-08-26 23:59:58,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163846 conditions, 67705 events. 52306/67705 cut-off events. For 28616/28616 co-relation queries the response was YES. Maximal size of possible extension queue 1946. Compared 357282 event pairs, 27192 based on Foata normal form. 0/49185 useless extension candidates. Maximal degree in co-relation 163820. Up to 60066 conditions per place. [2023-08-26 23:59:58,514 INFO L140 encePairwiseOnDemand]: 676/682 looper letters, 165 selfloop transitions, 5 changer transitions 0/170 dead transitions. [2023-08-26 23:59:58,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 170 transitions, 1300 flow [2023-08-26 23:59:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:59:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:59:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 994 transitions. [2023-08-26 23:59:58,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858260019550342 [2023-08-26 23:59:58,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 994 transitions. [2023-08-26 23:59:58,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 994 transitions. [2023-08-26 23:59:58,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:59:58,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 994 transitions. [2023-08-26 23:59:58,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:58,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:58,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:58,520 INFO L175 Difference]: Start difference. First operand has 88 places, 130 transitions, 817 flow. Second operand 3 states and 994 transitions. [2023-08-26 23:59:58,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 170 transitions, 1300 flow [2023-08-26 23:59:58,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 170 transitions, 1287 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:59:58,537 INFO L231 Difference]: Finished difference. Result has 89 places, 134 transitions, 837 flow [2023-08-26 23:59:58,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=837, PETRI_PLACES=89, PETRI_TRANSITIONS=134} [2023-08-26 23:59:58,537 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2023-08-26 23:59:58,537 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 134 transitions, 837 flow [2023-08-26 23:59:58,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.6666666666667) internal successors, (923), 3 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:58,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:59:58,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:59:58,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 23:59:58,538 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 23:59:58,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:59:58,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1761586657, now seen corresponding path program 1 times [2023-08-26 23:59:58,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:59:58,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456613431] [2023-08-26 23:59:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:59:58,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:59:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:59:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:59:58,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:59:58,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456613431] [2023-08-26 23:59:58,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456613431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:59:58,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:59:58,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:59:58,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391984152] [2023-08-26 23:59:58,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:59:58,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:59:58,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:59:58,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:59:58,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:59:58,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 682 [2023-08-26 23:59:58,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 134 transitions, 837 flow. Second operand has 5 states, 5 states have (on average 255.4) internal successors, (1277), 5 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:59:58,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:59:58,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 682 [2023-08-26 23:59:58,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:02,872 INFO L124 PetriNetUnfolderBase]: 47254/61577 cut-off events. [2023-08-27 00:00:02,872 INFO L125 PetriNetUnfolderBase]: For 33049/33049 co-relation queries the response was YES. [2023-08-27 00:00:03,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172668 conditions, 61577 events. 47254/61577 cut-off events. For 33049/33049 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 323209 event pairs, 28114 based on Foata normal form. 0/47831 useless extension candidates. Maximal degree in co-relation 172642. Up to 50083 conditions per place. [2023-08-27 00:00:03,227 INFO L140 encePairwiseOnDemand]: 674/682 looper letters, 222 selfloop transitions, 7 changer transitions 0/229 dead transitions. [2023-08-27 00:00:03,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 229 transitions, 1742 flow [2023-08-27 00:00:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:00:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:00:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1378 transitions. [2023-08-27 00:00:03,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40410557184750734 [2023-08-27 00:00:03,230 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1378 transitions. [2023-08-27 00:00:03,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1378 transitions. [2023-08-27 00:00:03,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:03,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1378 transitions. [2023-08-27 00:00:03,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.6) internal successors, (1378), 5 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 00:00:03,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:03,235 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:03,235 INFO L175 Difference]: Start difference. First operand has 89 places, 134 transitions, 837 flow. Second operand 5 states and 1378 transitions. [2023-08-27 00:00:03,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 229 transitions, 1742 flow [2023-08-27 00:00:03,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 229 transitions, 1731 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 00:00:03,430 INFO L231 Difference]: Finished difference. Result has 94 places, 138 transitions, 879 flow [2023-08-27 00:00:03,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=879, PETRI_PLACES=94, PETRI_TRANSITIONS=138} [2023-08-27 00:00:03,430 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 36 predicate places. [2023-08-27 00:00:03,430 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 138 transitions, 879 flow [2023-08-27 00:00:03,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.4) internal successors, (1277), 5 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:03,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:03,431 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:03,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 00:00:03,431 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:00:03,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1069099020, now seen corresponding path program 1 times [2023-08-27 00:00:03,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:03,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695639364] [2023-08-27 00:00:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:03,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:00:03,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:03,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695639364] [2023-08-27 00:00:03,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695639364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:03,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:03,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 00:00:03,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052969865] [2023-08-27 00:00:03,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:03,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:00:03,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:00:03,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:00:03,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 682 [2023-08-27 00:00:03,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 138 transitions, 879 flow. Second operand has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:03,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:03,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 682 [2023-08-27 00:00:03,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:07,225 INFO L124 PetriNetUnfolderBase]: 34742/45705 cut-off events. [2023-08-27 00:00:07,225 INFO L125 PetriNetUnfolderBase]: For 28798/28798 co-relation queries the response was YES. [2023-08-27 00:00:07,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131907 conditions, 45705 events. 34742/45705 cut-off events. For 28798/28798 co-relation queries the response was YES. Maximal size of possible extension queue 1433. Compared 237714 event pairs, 20160 based on Foata normal form. 420/37193 useless extension candidates. Maximal degree in co-relation 131878. Up to 31475 conditions per place. [2023-08-27 00:00:07,521 INFO L140 encePairwiseOnDemand]: 676/682 looper letters, 224 selfloop transitions, 18 changer transitions 0/242 dead transitions. [2023-08-27 00:00:07,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 242 transitions, 1848 flow [2023-08-27 00:00:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:00:07,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:00:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1378 transitions. [2023-08-27 00:00:07,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40410557184750734 [2023-08-27 00:00:07,524 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1378 transitions. [2023-08-27 00:00:07,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1378 transitions. [2023-08-27 00:00:07,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:07,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1378 transitions. [2023-08-27 00:00:07,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.6) internal successors, (1378), 5 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 00:00:07,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,529 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,529 INFO L175 Difference]: Start difference. First operand has 94 places, 138 transitions, 879 flow. Second operand 5 states and 1378 transitions. [2023-08-27 00:00:07,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 242 transitions, 1848 flow [2023-08-27 00:00:07,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 242 transitions, 1843 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:00:07,609 INFO L231 Difference]: Finished difference. Result has 98 places, 142 transitions, 958 flow [2023-08-27 00:00:07,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=958, PETRI_PLACES=98, PETRI_TRANSITIONS=142} [2023-08-27 00:00:07,609 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 40 predicate places. [2023-08-27 00:00:07,609 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 142 transitions, 958 flow [2023-08-27 00:00:07,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:07,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:07,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 00:00:07,610 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:00:07,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash -774458622, now seen corresponding path program 1 times [2023-08-27 00:00:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:07,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121831142] [2023-08-27 00:00:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:07,686 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 00:00:07,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:07,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121831142] [2023-08-27 00:00:07,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121831142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:07,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:07,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 00:00:07,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635325660] [2023-08-27 00:00:07,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:07,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:00:07,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:07,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:00:07,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:00:07,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 682 [2023-08-27 00:00:07,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 142 transitions, 958 flow. Second operand has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:07,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:07,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 682 [2023-08-27 00:00:07,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:11,113 INFO L124 PetriNetUnfolderBase]: 33292/43717 cut-off events. [2023-08-27 00:00:11,113 INFO L125 PetriNetUnfolderBase]: For 47149/47149 co-relation queries the response was YES. [2023-08-27 00:00:11,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130314 conditions, 43717 events. 33292/43717 cut-off events. For 47149/47149 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 222970 event pairs, 18460 based on Foata normal form. 0/35403 useless extension candidates. Maximal degree in co-relation 130284. Up to 29381 conditions per place. [2023-08-27 00:00:11,404 INFO L140 encePairwiseOnDemand]: 676/682 looper letters, 227 selfloop transitions, 16 changer transitions 0/243 dead transitions. [2023-08-27 00:00:11,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 243 transitions, 1919 flow [2023-08-27 00:00:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:00:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:00:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1624 transitions. [2023-08-27 00:00:11,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396871945259042 [2023-08-27 00:00:11,407 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1624 transitions. [2023-08-27 00:00:11,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1624 transitions. [2023-08-27 00:00:11,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:11,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1624 transitions. [2023-08-27 00:00:11,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.6666666666667) internal successors, (1624), 6 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:11,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 682.0) internal successors, (4774), 7 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:11,412 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 682.0) internal successors, (4774), 7 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:11,412 INFO L175 Difference]: Start difference. First operand has 98 places, 142 transitions, 958 flow. Second operand 6 states and 1624 transitions. [2023-08-27 00:00:11,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 243 transitions, 1919 flow [2023-08-27 00:00:11,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 243 transitions, 1891 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:00:11,483 INFO L231 Difference]: Finished difference. Result has 101 places, 141 transitions, 956 flow [2023-08-27 00:00:11,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=956, PETRI_PLACES=101, PETRI_TRANSITIONS=141} [2023-08-27 00:00:11,484 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2023-08-27 00:00:11,484 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 141 transitions, 956 flow [2023-08-27 00:00:11,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:11,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:11,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:11,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 00:00:11,485 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:00:11,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:11,485 INFO L85 PathProgramCache]: Analyzing trace with hash -774458621, now seen corresponding path program 1 times [2023-08-27 00:00:11,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:11,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442527549] [2023-08-27 00:00:11,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:11,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:11,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:11,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442527549] [2023-08-27 00:00:11,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442527549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:11,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:11,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 00:00:11,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89192518] [2023-08-27 00:00:11,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:11,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:00:11,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:11,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:00:11,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:00:11,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 682 [2023-08-27 00:00:11,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 141 transitions, 956 flow. Second operand has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:11,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:11,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 682 [2023-08-27 00:00:11,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:14,758 INFO L124 PetriNetUnfolderBase]: 31096/40977 cut-off events. [2023-08-27 00:00:14,759 INFO L125 PetriNetUnfolderBase]: For 46913/46913 co-relation queries the response was YES. [2023-08-27 00:00:14,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122573 conditions, 40977 events. 31096/40977 cut-off events. For 46913/46913 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 207707 event pairs, 18956 based on Foata normal form. 996/35885 useless extension candidates. Maximal degree in co-relation 122542. Up to 21118 conditions per place. [2023-08-27 00:00:15,005 INFO L140 encePairwiseOnDemand]: 675/682 looper letters, 160 selfloop transitions, 38 changer transitions 0/198 dead transitions. [2023-08-27 00:00:15,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 198 transitions, 1609 flow [2023-08-27 00:00:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:00:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:00:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1599 transitions. [2023-08-27 00:00:15,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907624633431085 [2023-08-27 00:00:15,008 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1599 transitions. [2023-08-27 00:00:15,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1599 transitions. [2023-08-27 00:00:15,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:15,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1599 transitions. [2023-08-27 00:00:15,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.5) internal successors, (1599), 6 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:15,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 682.0) internal successors, (4774), 7 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:15,013 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 682.0) internal successors, (4774), 7 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:15,013 INFO L175 Difference]: Start difference. First operand has 101 places, 141 transitions, 956 flow. Second operand 6 states and 1599 transitions. [2023-08-27 00:00:15,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 198 transitions, 1609 flow [2023-08-27 00:00:15,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 198 transitions, 1594 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:00:15,081 INFO L231 Difference]: Finished difference. Result has 106 places, 143 transitions, 1076 flow [2023-08-27 00:00:15,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1076, PETRI_PLACES=106, PETRI_TRANSITIONS=143} [2023-08-27 00:00:15,082 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 48 predicate places. [2023-08-27 00:00:15,082 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 143 transitions, 1076 flow [2023-08-27 00:00:15,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:15,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:15,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:15,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 00:00:15,083 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:00:15,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:15,083 INFO L85 PathProgramCache]: Analyzing trace with hash -586946358, now seen corresponding path program 1 times [2023-08-27 00:00:15,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:15,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543728927] [2023-08-27 00:00:15,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:15,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:15,181 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 00:00:15,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:15,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543728927] [2023-08-27 00:00:15,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543728927] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:15,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471576180] [2023-08-27 00:00:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:15,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:15,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:15,183 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 00:00:15,185 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 00:00:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:15,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:00:15,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:15,315 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 00:00:15,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:00:15,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471576180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:15,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:00:15,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-27 00:00:15,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371082881] [2023-08-27 00:00:15,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:15,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:00:15,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:15,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:00:15,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:00:15,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 682 [2023-08-27 00:00:15,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 143 transitions, 1076 flow. Second operand has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:15,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:15,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 682 [2023-08-27 00:00:15,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:18,360 INFO L124 PetriNetUnfolderBase]: 29686/39121 cut-off events. [2023-08-27 00:00:18,361 INFO L125 PetriNetUnfolderBase]: For 55711/55711 co-relation queries the response was YES. [2023-08-27 00:00:18,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120292 conditions, 39121 events. 29686/39121 cut-off events. For 55711/55711 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 198112 event pairs, 18480 based on Foata normal form. 472/35903 useless extension candidates. Maximal degree in co-relation 120258. Up to 39074 conditions per place. [2023-08-27 00:00:18,589 INFO L140 encePairwiseOnDemand]: 679/682 looper letters, 118 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2023-08-27 00:00:18,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 141 transitions, 1345 flow [2023-08-27 00:00:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:00:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:00:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1198 transitions. [2023-08-27 00:00:18,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43914956011730205 [2023-08-27 00:00:18,592 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1198 transitions. [2023-08-27 00:00:18,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1198 transitions. [2023-08-27 00:00:18,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:18,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1198 transitions. [2023-08-27 00:00:18,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.5) internal successors, (1198), 4 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:18,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:18,595 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:18,595 INFO L175 Difference]: Start difference. First operand has 106 places, 143 transitions, 1076 flow. Second operand 4 states and 1198 transitions. [2023-08-27 00:00:18,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 141 transitions, 1345 flow [2023-08-27 00:00:18,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 141 transitions, 1282 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 00:00:18,672 INFO L231 Difference]: Finished difference. Result has 102 places, 141 transitions, 1046 flow [2023-08-27 00:00:18,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1046, PETRI_PLACES=102, PETRI_TRANSITIONS=141} [2023-08-27 00:00:18,673 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2023-08-27 00:00:18,673 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 141 transitions, 1046 flow [2023-08-27 00:00:18,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:18,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:18,674 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:18,679 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 00:00:18,878 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,SelfDestructingSolverStorable20 [2023-08-27 00:00:18,878 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:00:18,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1671934066, now seen corresponding path program 1 times [2023-08-27 00:00:18,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:18,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814404052] [2023-08-27 00:00:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:18,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:18,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814404052] [2023-08-27 00:00:18,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814404052] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:18,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457108671] [2023-08-27 00:00:18,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:18,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:18,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:18,966 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 00:00:18,969 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 00:00:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:19,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 00:00:19,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:19,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:00:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:19,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457108671] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:00:19,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:00:19,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-08-27 00:00:19,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171073195] [2023-08-27 00:00:19,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:00:19,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 00:00:19,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:19,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 00:00:19,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-08-27 00:00:19,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 682 [2023-08-27 00:00:19,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 141 transitions, 1046 flow. Second operand has 16 states, 16 states have (on average 244.875) internal successors, (3918), 16 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:19,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:19,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 682 [2023-08-27 00:00:19,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:27,222 INFO L124 PetriNetUnfolderBase]: 74238/97411 cut-off events. [2023-08-27 00:00:27,223 INFO L125 PetriNetUnfolderBase]: For 111478/111478 co-relation queries the response was YES. [2023-08-27 00:00:27,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296973 conditions, 97411 events. 74238/97411 cut-off events. For 111478/111478 co-relation queries the response was YES. Maximal size of possible extension queue 2759. Compared 557852 event pairs, 29538 based on Foata normal form. 1182/89483 useless extension candidates. Maximal degree in co-relation 296941. Up to 22788 conditions per place. [2023-08-27 00:00:28,051 INFO L140 encePairwiseOnDemand]: 668/682 looper letters, 532 selfloop transitions, 61 changer transitions 0/593 dead transitions. [2023-08-27 00:00:28,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 593 transitions, 4525 flow [2023-08-27 00:00:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 00:00:28,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 00:00:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5931 transitions. [2023-08-27 00:00:28,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3781078668876705 [2023-08-27 00:00:28,057 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5931 transitions. [2023-08-27 00:00:28,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5931 transitions. [2023-08-27 00:00:28,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:28,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5931 transitions. [2023-08-27 00:00:28,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 257.8695652173913) internal successors, (5931), 23 states have internal predecessors, (5931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:28,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 682.0) internal successors, (16368), 24 states have internal predecessors, (16368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:28,072 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 682.0) internal successors, (16368), 24 states have internal predecessors, (16368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:28,072 INFO L175 Difference]: Start difference. First operand has 102 places, 141 transitions, 1046 flow. Second operand 23 states and 5931 transitions. [2023-08-27 00:00:28,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 593 transitions, 4525 flow [2023-08-27 00:00:28,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 593 transitions, 4490 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:00:28,378 INFO L231 Difference]: Finished difference. Result has 131 places, 175 transitions, 1501 flow [2023-08-27 00:00:28,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1501, PETRI_PLACES=131, PETRI_TRANSITIONS=175} [2023-08-27 00:00:28,378 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 73 predicate places. [2023-08-27 00:00:28,378 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 175 transitions, 1501 flow [2023-08-27 00:00:28,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 244.875) internal successors, (3918), 16 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:28,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:28,379 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:28,385 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 00:00:28,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:28,580 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:00:28,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1706524522, now seen corresponding path program 1 times [2023-08-27 00:00:28,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:28,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198490147] [2023-08-27 00:00:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:28,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:28,646 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 00:00:28,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:28,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198490147] [2023-08-27 00:00:28,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198490147] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:28,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:28,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 00:00:28,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84596793] [2023-08-27 00:00:28,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:28,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:00:28,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:28,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:00:28,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:00:28,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 682 [2023-08-27 00:00:28,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 175 transitions, 1501 flow. Second operand has 5 states, 5 states have (on average 255.4) internal successors, (1277), 5 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:28,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:28,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 682 [2023-08-27 00:00:28,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:35,329 INFO L124 PetriNetUnfolderBase]: 63474/83245 cut-off events. [2023-08-27 00:00:35,329 INFO L125 PetriNetUnfolderBase]: For 162315/162315 co-relation queries the response was YES. [2023-08-27 00:00:35,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269442 conditions, 83245 events. 63474/83245 cut-off events. For 162315/162315 co-relation queries the response was YES. Maximal size of possible extension queue 2296. Compared 456340 event pairs, 38324 based on Foata normal form. 378/75989 useless extension candidates. Maximal degree in co-relation 269401. Up to 77265 conditions per place. [2023-08-27 00:00:35,965 INFO L140 encePairwiseOnDemand]: 676/682 looper letters, 239 selfloop transitions, 18 changer transitions 0/257 dead transitions. [2023-08-27 00:00:35,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 257 transitions, 2499 flow [2023-08-27 00:00:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:00:35,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:00:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1363 transitions. [2023-08-27 00:00:35,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997067448680352 [2023-08-27 00:00:35,967 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1363 transitions. [2023-08-27 00:00:35,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1363 transitions. [2023-08-27 00:00:35,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:35,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1363 transitions. [2023-08-27 00:00:35,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 272.6) internal successors, (1363), 5 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:35,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:35,971 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:35,971 INFO L175 Difference]: Start difference. First operand has 131 places, 175 transitions, 1501 flow. Second operand 5 states and 1363 transitions. [2023-08-27 00:00:35,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 257 transitions, 2499 flow [2023-08-27 00:00:36,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 257 transitions, 2446 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-27 00:00:36,335 INFO L231 Difference]: Finished difference. Result has 135 places, 177 transitions, 1507 flow [2023-08-27 00:00:36,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1507, PETRI_PLACES=135, PETRI_TRANSITIONS=177} [2023-08-27 00:00:36,335 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 77 predicate places. [2023-08-27 00:00:36,335 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 177 transitions, 1507 flow [2023-08-27 00:00:36,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.4) internal successors, (1277), 5 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:36,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:36,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:36,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 00:00:36,336 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:00:36,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:36,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1493255842, now seen corresponding path program 1 times [2023-08-27 00:00:36,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:36,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606758097] [2023-08-27 00:00:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:36,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:36,435 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 00:00:36,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606758097] [2023-08-27 00:00:36,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606758097] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804449370] [2023-08-27 00:00:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:36,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:36,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:36,437 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 00:00:36,439 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 00:00:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:36,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:00:36,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:36,578 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 00:00:36,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:00:36,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804449370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:36,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:00:36,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-27 00:00:36,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033236963] [2023-08-27 00:00:36,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:36,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:00:36,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:36,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:00:36,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-27 00:00:36,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 682 [2023-08-27 00:00:36,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 177 transitions, 1507 flow. Second operand has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:36,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:36,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 682 [2023-08-27 00:00:36,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:42,864 INFO L124 PetriNetUnfolderBase]: 54546/72053 cut-off events. [2023-08-27 00:00:42,864 INFO L125 PetriNetUnfolderBase]: For 157824/157824 co-relation queries the response was YES. [2023-08-27 00:00:43,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230453 conditions, 72053 events. 54546/72053 cut-off events. For 157824/157824 co-relation queries the response was YES. Maximal size of possible extension queue 2015. Compared 396246 event pairs, 34010 based on Foata normal form. 4528/69319 useless extension candidates. Maximal degree in co-relation 230410. Up to 71994 conditions per place. [2023-08-27 00:00:43,418 INFO L140 encePairwiseOnDemand]: 679/682 looper letters, 148 selfloop transitions, 25 changer transitions 0/173 dead transitions. [2023-08-27 00:00:43,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 173 transitions, 1821 flow [2023-08-27 00:00:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:00:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:00:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1197 transitions. [2023-08-27 00:00:43,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43878299120234604 [2023-08-27 00:00:43,420 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1197 transitions. [2023-08-27 00:00:43,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1197 transitions. [2023-08-27 00:00:43,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:43,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1197 transitions. [2023-08-27 00:00:43,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.25) internal successors, (1197), 4 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:43,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:43,423 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:43,423 INFO L175 Difference]: Start difference. First operand has 135 places, 177 transitions, 1507 flow. Second operand 4 states and 1197 transitions. [2023-08-27 00:00:43,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 173 transitions, 1821 flow [2023-08-27 00:00:43,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 173 transitions, 1716 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:00:43,707 INFO L231 Difference]: Finished difference. Result has 133 places, 173 transitions, 1420 flow [2023-08-27 00:00:43,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1420, PETRI_PLACES=133, PETRI_TRANSITIONS=173} [2023-08-27 00:00:43,707 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 75 predicate places. [2023-08-27 00:00:43,708 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 173 transitions, 1420 flow [2023-08-27 00:00:43,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:43,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:43,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:43,713 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 00:00:43,908 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,SelfDestructingSolverStorable23 [2023-08-27 00:00:43,909 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:00:43,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1243830930, now seen corresponding path program 1 times [2023-08-27 00:00:43,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:43,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998956328] [2023-08-27 00:00:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:43,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:43,983 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 00:00:43,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:43,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998956328] [2023-08-27 00:00:43,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998956328] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:43,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854173662] [2023-08-27 00:00:43,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:43,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:43,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:43,985 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 00:00:43,987 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 00:00:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:44,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:00:44,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:44,121 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 00:00:44,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:00:44,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854173662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:44,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:00:44,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 00:00:44,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433876031] [2023-08-27 00:00:44,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:44,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:00:44,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:44,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:00:44,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:00:44,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 682 [2023-08-27 00:00:44,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 173 transitions, 1420 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:44,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:44,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 682 [2023-08-27 00:00:44,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:49,655 INFO L124 PetriNetUnfolderBase]: 49276/65345 cut-off events. [2023-08-27 00:00:49,656 INFO L125 PetriNetUnfolderBase]: For 122199/122199 co-relation queries the response was YES. [2023-08-27 00:00:49,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203501 conditions, 65345 events. 49276/65345 cut-off events. For 122199/122199 co-relation queries the response was YES. Maximal size of possible extension queue 1814. Compared 357774 event pairs, 30842 based on Foata normal form. 2570/60879 useless extension candidates. Maximal degree in co-relation 203458. Up to 65345 conditions per place. [2023-08-27 00:00:50,137 INFO L140 encePairwiseOnDemand]: 680/682 looper letters, 169 selfloop transitions, 1 changer transitions 0/170 dead transitions. [2023-08-27 00:00:50,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 170 transitions, 1732 flow [2023-08-27 00:00:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:00:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:00:50,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2023-08-27 00:00:50,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4442815249266862 [2023-08-27 00:00:50,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2023-08-27 00:00:50,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2023-08-27 00:00:50,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:50,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2023-08-27 00:00:50,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:50,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:50,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:50,141 INFO L175 Difference]: Start difference. First operand has 133 places, 173 transitions, 1420 flow. Second operand 3 states and 909 transitions. [2023-08-27 00:00:50,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 170 transitions, 1732 flow [2023-08-27 00:00:50,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 170 transitions, 1701 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:00:50,407 INFO L231 Difference]: Finished difference. Result has 129 places, 170 transitions, 1363 flow [2023-08-27 00:00:50,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1363, PETRI_PLACES=129, PETRI_TRANSITIONS=170} [2023-08-27 00:00:50,408 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 71 predicate places. [2023-08-27 00:00:50,408 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 170 transitions, 1363 flow [2023-08-27 00:00:50,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:50,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:50,408 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-27 00:00:50,413 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 00:00:50,609 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,SelfDestructingSolverStorable24 [2023-08-27 00:00:50,611 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:00:50,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1211411747, now seen corresponding path program 2 times [2023-08-27 00:00:50,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:50,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552287849] [2023-08-27 00:00:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:50,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:00:50,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:50,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552287849] [2023-08-27 00:00:50,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552287849] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:00:50,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783776796] [2023-08-27 00:00:50,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:00:50,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:00:50,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:00:50,754 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 00:00:50,756 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 00:00:50,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:00:50,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:00:50,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:00:50,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:00:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 00:00:50,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:00:50,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783776796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:50,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:00:50,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-27 00:00:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298932842] [2023-08-27 00:00:50,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:50,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:00:50,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:50,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:00:50,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-27 00:00:50,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 682 [2023-08-27 00:00:50,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 170 transitions, 1363 flow. Second operand has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:50,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:50,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 682 [2023-08-27 00:00:50,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:00:56,469 INFO L124 PetriNetUnfolderBase]: 49276/65342 cut-off events. [2023-08-27 00:00:56,470 INFO L125 PetriNetUnfolderBase]: For 108554/108554 co-relation queries the response was YES. [2023-08-27 00:00:56,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203456 conditions, 65342 events. 49276/65342 cut-off events. For 108554/108554 co-relation queries the response was YES. Maximal size of possible extension queue 1811. Compared 357040 event pairs, 30842 based on Foata normal form. 3/58309 useless extension candidates. Maximal degree in co-relation 203415. Up to 65286 conditions per place. [2023-08-27 00:00:56,957 INFO L140 encePairwiseOnDemand]: 679/682 looper letters, 143 selfloop transitions, 25 changer transitions 0/168 dead transitions. [2023-08-27 00:00:56,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 168 transitions, 1649 flow [2023-08-27 00:00:56,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:00:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:00:56,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1151 transitions. [2023-08-27 00:00:56,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219208211143695 [2023-08-27 00:00:56,958 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1151 transitions. [2023-08-27 00:00:56,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1151 transitions. [2023-08-27 00:00:56,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:00:56,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1151 transitions. [2023-08-27 00:00:56,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 287.75) internal successors, (1151), 4 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:56,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:56,961 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 682.0) internal successors, (3410), 5 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:56,961 INFO L175 Difference]: Start difference. First operand has 129 places, 170 transitions, 1363 flow. Second operand 4 states and 1151 transitions. [2023-08-27 00:00:56,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 168 transitions, 1649 flow [2023-08-27 00:00:57,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 168 transitions, 1648 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:00:57,212 INFO L231 Difference]: Finished difference. Result has 130 places, 168 transitions, 1362 flow [2023-08-27 00:00:57,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1362, PETRI_PLACES=130, PETRI_TRANSITIONS=168} [2023-08-27 00:00:57,213 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2023-08-27 00:00:57,213 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 168 transitions, 1362 flow [2023-08-27 00:00:57,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:57,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:00:57,213 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:00:57,220 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 00:00:57,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 00:00:57,415 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:00:57,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:00:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1416108759, now seen corresponding path program 1 times [2023-08-27 00:00:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:00:57,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987685081] [2023-08-27 00:00:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:00:57,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:00:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:00:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:00:57,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:00:57,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987685081] [2023-08-27 00:00:57,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987685081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:00:57,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:00:57,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:00:57,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38362602] [2023-08-27 00:00:57,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:00:57,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:00:57,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:00:57,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:00:57,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:00:57,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 682 [2023-08-27 00:00:57,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 168 transitions, 1362 flow. Second operand has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:00:57,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:00:57,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 682 [2023-08-27 00:00:57,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:01:02,617 INFO L124 PetriNetUnfolderBase]: 46116/61086 cut-off events. [2023-08-27 00:01:02,618 INFO L125 PetriNetUnfolderBase]: For 98950/98950 co-relation queries the response was YES. [2023-08-27 00:01:02,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190010 conditions, 61086 events. 46116/61086 cut-off events. For 98950/98950 co-relation queries the response was YES. Maximal size of possible extension queue 1692. Compared 342143 event pairs, 7526 based on Foata normal form. 0/55490 useless extension candidates. Maximal degree in co-relation 189968. Up to 40508 conditions per place. [2023-08-27 00:01:03,252 INFO L140 encePairwiseOnDemand]: 678/682 looper letters, 212 selfloop transitions, 7 changer transitions 0/219 dead transitions. [2023-08-27 00:01:03,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 219 transitions, 2156 flow [2023-08-27 00:01:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:01:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:01:03,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 978 transitions. [2023-08-27 00:01:03,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780058651026393 [2023-08-27 00:01:03,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 978 transitions. [2023-08-27 00:01:03,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 978 transitions. [2023-08-27 00:01:03,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:01:03,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 978 transitions. [2023-08-27 00:01:03,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:03,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:03,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:03,256 INFO L175 Difference]: Start difference. First operand has 130 places, 168 transitions, 1362 flow. Second operand 3 states and 978 transitions. [2023-08-27 00:01:03,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 219 transitions, 2156 flow [2023-08-27 00:01:03,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 219 transitions, 2130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:01:03,452 INFO L231 Difference]: Finished difference. Result has 129 places, 167 transitions, 1346 flow [2023-08-27 00:01:03,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1346, PETRI_PLACES=129, PETRI_TRANSITIONS=167} [2023-08-27 00:01:03,452 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 71 predicate places. [2023-08-27 00:01:03,452 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 167 transitions, 1346 flow [2023-08-27 00:01:03,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:03,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:01:03,453 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:01:03,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 00:01:03,453 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:01:03,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:01:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1416108760, now seen corresponding path program 1 times [2023-08-27 00:01:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:01:03,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067379703] [2023-08-27 00:01:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:01:03,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:01:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:01:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:01:03,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:01:03,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067379703] [2023-08-27 00:01:03,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067379703] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:01:03,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:01:03,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 00:01:03,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543614078] [2023-08-27 00:01:03,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:01:03,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:01:03,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:01:03,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:01:03,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:01:03,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 682 [2023-08-27 00:01:03,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 167 transitions, 1346 flow. Second operand has 5 states, 5 states have (on average 255.6) internal successors, (1278), 5 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:03,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:01:03,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 682 [2023-08-27 00:01:03,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:01:07,259 INFO L124 PetriNetUnfolderBase]: 31284/41870 cut-off events. [2023-08-27 00:01:07,259 INFO L125 PetriNetUnfolderBase]: For 79171/79171 co-relation queries the response was YES. [2023-08-27 00:01:07,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136157 conditions, 41870 events. 31284/41870 cut-off events. For 79171/79171 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 221068 event pairs, 18048 based on Foata normal form. 548/38746 useless extension candidates. Maximal degree in co-relation 136116. Up to 30650 conditions per place. [2023-08-27 00:01:07,530 INFO L140 encePairwiseOnDemand]: 676/682 looper letters, 250 selfloop transitions, 34 changer transitions 0/284 dead transitions. [2023-08-27 00:01:07,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 284 transitions, 2692 flow [2023-08-27 00:01:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:01:07,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:01:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1364 transitions. [2023-08-27 00:01:07,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-08-27 00:01:07,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1364 transitions. [2023-08-27 00:01:07,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1364 transitions. [2023-08-27 00:01:07,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:01:07,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1364 transitions. [2023-08-27 00:01:07,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 272.8) internal successors, (1364), 5 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 00:01:07,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:07,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 682.0) internal successors, (4092), 6 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:07,537 INFO L175 Difference]: Start difference. First operand has 129 places, 167 transitions, 1346 flow. Second operand 5 states and 1364 transitions. [2023-08-27 00:01:07,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 284 transitions, 2692 flow [2023-08-27 00:01:07,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 284 transitions, 2670 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:01:07,740 INFO L231 Difference]: Finished difference. Result has 133 places, 171 transitions, 1449 flow [2023-08-27 00:01:07,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1449, PETRI_PLACES=133, PETRI_TRANSITIONS=171} [2023-08-27 00:01:07,741 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 75 predicate places. [2023-08-27 00:01:07,741 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 171 transitions, 1449 flow [2023-08-27 00:01:07,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.6) internal successors, (1278), 5 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:07,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:01:07,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:01:07,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 00:01:07,741 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:01:07,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:01:07,742 INFO L85 PathProgramCache]: Analyzing trace with hash -953709041, now seen corresponding path program 1 times [2023-08-27 00:01:07,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:01:07,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461622181] [2023-08-27 00:01:07,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:01:07,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:01:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:01:07,778 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 00:01:07,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:01:07,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461622181] [2023-08-27 00:01:07,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461622181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:01:07,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:01:07,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:01:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657392228] [2023-08-27 00:01:07,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:01:07,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:01:07,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:01:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:01:07,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:01:07,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 682 [2023-08-27 00:01:07,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 171 transitions, 1449 flow. Second operand has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:07,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:01:07,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 682 [2023-08-27 00:01:07,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:01:10,887 INFO L124 PetriNetUnfolderBase]: 27100/36222 cut-off events. [2023-08-27 00:01:10,890 INFO L125 PetriNetUnfolderBase]: For 74236/74236 co-relation queries the response was YES. [2023-08-27 00:01:11,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119130 conditions, 36222 events. 27100/36222 cut-off events. For 74236/74236 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 188948 event pairs, 9098 based on Foata normal form. 0/34126 useless extension candidates. Maximal degree in co-relation 119087. Up to 21999 conditions per place. [2023-08-27 00:01:11,118 INFO L140 encePairwiseOnDemand]: 679/682 looper letters, 227 selfloop transitions, 5 changer transitions 0/232 dead transitions. [2023-08-27 00:01:11,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 232 transitions, 2341 flow [2023-08-27 00:01:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:01:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:01:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 982 transitions. [2023-08-27 00:01:11,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47996089931573804 [2023-08-27 00:01:11,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 982 transitions. [2023-08-27 00:01:11,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 982 transitions. [2023-08-27 00:01:11,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:01:11,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 982 transitions. [2023-08-27 00:01:11,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:11,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:11,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 682.0) internal successors, (2728), 4 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:11,122 INFO L175 Difference]: Start difference. First operand has 133 places, 171 transitions, 1449 flow. Second operand 3 states and 982 transitions. [2023-08-27 00:01:11,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 232 transitions, 2341 flow [2023-08-27 00:01:11,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 232 transitions, 2284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:01:11,320 INFO L231 Difference]: Finished difference. Result has 132 places, 170 transitions, 1398 flow [2023-08-27 00:01:11,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=682, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1398, PETRI_PLACES=132, PETRI_TRANSITIONS=170} [2023-08-27 00:01:11,323 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 74 predicate places. [2023-08-27 00:01:11,323 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 170 transitions, 1398 flow [2023-08-27 00:01:11,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:11,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:01:11,323 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:01:11,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 00:01:11,323 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 00:01:11,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:01:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2023500897, now seen corresponding path program 1 times [2023-08-27 00:01:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:01:11,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010895490] [2023-08-27 00:01:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:01:11,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:01:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:01:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:01:11,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:01:11,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010895490] [2023-08-27 00:01:11,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010895490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:01:11,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271098822] [2023-08-27 00:01:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:01:11,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:01:11,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:01:11,411 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 00:01:11,413 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 00:01:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:01:11,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 00:01:11,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:01:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:01:11,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:01:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:01:11,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271098822] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:01:11,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:01:11,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 00:01:11,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672484193] [2023-08-27 00:01:11,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:01:11,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 00:01:11,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:01:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 00:01:11,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-08-27 00:01:11,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 682 [2023-08-27 00:01:11,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 170 transitions, 1398 flow. Second operand has 16 states, 16 states have (on average 245.0625) internal successors, (3921), 16 states have internal predecessors, (3921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:01:11,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:01:11,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 682 [2023-08-27 00:01:11,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand