/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 01:16:16,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 01:16:16,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 01:16:16,474 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 01:16:16,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 01:16:16,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 01:16:16,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 01:16:16,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 01:16:16,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 01:16:16,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 01:16:16,509 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 01:16:16,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 01:16:16,510 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 01:16:16,511 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 01:16:16,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 01:16:16,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 01:16:16,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 01:16:16,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 01:16:16,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 01:16:16,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 01:16:16,512 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 01:16:16,513 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 01:16:16,513 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 01:16:16,514 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 01:16:16,514 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 01:16:16,514 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 01:16:16,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 01:16:16,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:16:16,515 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 01:16:16,515 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 01:16:16,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 01:16:16,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 01:16:16,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 01:16:16,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 01:16:16,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 01:16:16,517 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 01:16:16,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 01:16:16,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 01:16:16,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 01:16:16,858 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 01:16:16,858 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 01:16:16,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-08-27 01:16:18,020 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 01:16:18,285 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 01:16:18,286 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-08-27 01:16:18,294 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4540e41b2/ecd9b3f7d5af40f991da4f9f3f65e5ea/FLAG4bfa70b62 [2023-08-27 01:16:18,310 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4540e41b2/ecd9b3f7d5af40f991da4f9f3f65e5ea [2023-08-27 01:16:18,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 01:16:18,316 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 01:16:18,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 01:16:18,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 01:16:18,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 01:16:18,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba7e6ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18, skipping insertion in model container [2023-08-27 01:16:18,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,349 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 01:16:18,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:16:18,554 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 01:16:18,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:16:18,596 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:16:18,599 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:16:18,605 INFO L206 MainTranslator]: Completed translation [2023-08-27 01:16:18,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18 WrapperNode [2023-08-27 01:16:18,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 01:16:18,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 01:16:18,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 01:16:18,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 01:16:18,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,659 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 109 [2023-08-27 01:16:18,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 01:16:18,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 01:16:18,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 01:16:18,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 01:16:18,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 01:16:18,704 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 01:16:18,704 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 01:16:18,704 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 01:16:18,705 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (1/1) ... [2023-08-27 01:16:18,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:16:18,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:18,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 01:16:18,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 01:16:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 01:16:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 01:16:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 01:16:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 01:16:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 01:16:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 01:16:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 01:16:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 01:16:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 01:16:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 01:16:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 01:16:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 01:16:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 01:16:18,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 01:16:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 01:16:18,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 01:16:18,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 01:16:18,774 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 01:16:18,874 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 01:16:18,876 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 01:16:19,221 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 01:16:19,294 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 01:16:19,294 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 01:16:19,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:16:19 BoogieIcfgContainer [2023-08-27 01:16:19,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 01:16:19,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 01:16:19,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 01:16:19,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 01:16:19,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:16:18" (1/3) ... [2023-08-27 01:16:19,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a40e7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:16:19, skipping insertion in model container [2023-08-27 01:16:19,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:16:18" (2/3) ... [2023-08-27 01:16:19,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a40e7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:16:19, skipping insertion in model container [2023-08-27 01:16:19,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:16:19" (3/3) ... [2023-08-27 01:16:19,305 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2023-08-27 01:16:19,321 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 01:16:19,321 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 01:16:19,321 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 01:16:19,395 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 01:16:19,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 165 transitions, 354 flow [2023-08-27 01:16:19,547 INFO L124 PetriNetUnfolderBase]: 12/162 cut-off events. [2023-08-27 01:16:19,547 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:16:19,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 162 events. 12/162 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 156 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2023-08-27 01:16:19,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 165 transitions, 354 flow [2023-08-27 01:16:19,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 151 transitions, 320 flow [2023-08-27 01:16:19,566 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 01:16:19,578 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 151 transitions, 320 flow [2023-08-27 01:16:19,590 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 151 transitions, 320 flow [2023-08-27 01:16:19,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 151 transitions, 320 flow [2023-08-27 01:16:19,641 INFO L124 PetriNetUnfolderBase]: 12/151 cut-off events. [2023-08-27 01:16:19,641 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:16:19,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 151 events. 12/151 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 155 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2023-08-27 01:16:19,644 INFO L119 LiptonReduction]: Number of co-enabled transitions 2430 [2023-08-27 01:16:24,767 INFO L134 LiptonReduction]: Checked pairs total: 2901 [2023-08-27 01:16:24,767 INFO L136 LiptonReduction]: Total number of compositions: 154 [2023-08-27 01:16:24,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 01:16:24,790 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;@3b72fd17, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 01:16:24,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-27 01:16:24,792 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 01:16:24,792 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 01:16:24,792 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:16:24,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:24,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 01:16:24,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:24,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:24,798 INFO L85 PathProgramCache]: Analyzing trace with hash 21448, now seen corresponding path program 1 times [2023-08-27 01:16:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:24,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490008194] [2023-08-27 01:16:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:24,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:25,109 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 01:16:25,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490008194] [2023-08-27 01:16:25,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490008194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:16:25,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:16:25,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:16:25,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202224675] [2023-08-27 01:16:25,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:25,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:16:25,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:16:25,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:16:25,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 319 [2023-08-27 01:16:25,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:25,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:25,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 319 [2023-08-27 01:16:25,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:25,409 INFO L124 PetriNetUnfolderBase]: 1266/1643 cut-off events. [2023-08-27 01:16:25,409 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-27 01:16:25,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3358 conditions, 1643 events. 1266/1643 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6217 event pairs, 586 based on Foata normal form. 0/573 useless extension candidates. Maximal degree in co-relation 2828. Up to 1617 conditions per place. [2023-08-27 01:16:25,427 INFO L140 encePairwiseOnDemand]: 314/319 looper letters, 28 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-27 01:16:25,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 148 flow [2023-08-27 01:16:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:16:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:16:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-27 01:16:25,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702194357366771 [2023-08-27 01:16:25,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-27 01:16:25,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-27 01:16:25,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:25,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-27 01:16:25,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:25,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:25,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:25,467 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 82 flow. Second operand 3 states and 450 transitions. [2023-08-27 01:16:25,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 148 flow [2023-08-27 01:16:25,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 01:16:25,476 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 91 flow [2023-08-27 01:16:25,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-27 01:16:25,484 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-08-27 01:16:25,485 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 91 flow [2023-08-27 01:16:25,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:25,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:25,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:16:25,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 01:16:25,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:25,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:25,493 INFO L85 PathProgramCache]: Analyzing trace with hash 666248, now seen corresponding path program 1 times [2023-08-27 01:16:25,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:25,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834412807] [2023-08-27 01:16:25,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:25,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:25,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:25,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834412807] [2023-08-27 01:16:25,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834412807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:16:25,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:16:25,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:16:25,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017169590] [2023-08-27 01:16:25,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:25,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:16:25,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:25,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:16:25,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:16:25,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 319 [2023-08-27 01:16:25,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:25,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:25,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 319 [2023-08-27 01:16:25,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:25,759 INFO L124 PetriNetUnfolderBase]: 1266/1642 cut-off events. [2023-08-27 01:16:25,759 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-27 01:16:25,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3301 conditions, 1642 events. 1266/1642 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6189 event pairs, 586 based on Foata normal form. 0/573 useless extension candidates. Maximal degree in co-relation 3277. Up to 1613 conditions per place. [2023-08-27 01:16:25,769 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 27 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-08-27 01:16:25,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 147 flow [2023-08-27 01:16:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:16:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:16:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-27 01:16:25,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660397074190178 [2023-08-27 01:16:25,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-27 01:16:25,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-27 01:16:25,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:25,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-27 01:16:25,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:25,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:25,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:25,775 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 91 flow. Second operand 3 states and 446 transitions. [2023-08-27 01:16:25,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 147 flow [2023-08-27 01:16:25,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 01:16:25,777 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 88 flow [2023-08-27 01:16:25,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-27 01:16:25,778 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-08-27 01:16:25,778 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 88 flow [2023-08-27 01:16:25,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:25,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:25,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:16:25,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 01:16:25,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:25,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 666262, now seen corresponding path program 1 times [2023-08-27 01:16:25,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:25,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107997026] [2023-08-27 01:16:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:25,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:25,854 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 01:16:25,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:25,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107997026] [2023-08-27 01:16:25,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107997026] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:25,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386329034] [2023-08-27 01:16:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:25,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:25,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:25,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:16:25,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 01:16:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:25,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:16:25,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:25,989 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 01:16:25,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:16:26,008 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 01:16:26,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386329034] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:16:26,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:16:26,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:16:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397028999] [2023-08-27 01:16:26,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:16:26,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:16:26,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:16:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:16:26,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 319 [2023-08-27 01:16:26,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 140.14285714285714) internal successors, (981), 7 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:26,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:26,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 319 [2023-08-27 01:16:26,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:26,214 INFO L124 PetriNetUnfolderBase]: 1269/1648 cut-off events. [2023-08-27 01:16:26,214 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 01:16:26,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3322 conditions, 1648 events. 1269/1648 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6220 event pairs, 586 based on Foata normal form. 0/581 useless extension candidates. Maximal degree in co-relation 3277. Up to 1619 conditions per place. [2023-08-27 01:16:26,226 INFO L140 encePairwiseOnDemand]: 315/319 looper letters, 27 selfloop transitions, 9 changer transitions 0/39 dead transitions. [2023-08-27 01:16:26,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 190 flow [2023-08-27 01:16:26,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:16:26,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:16:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 873 transitions. [2023-08-27 01:16:26,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561128526645768 [2023-08-27 01:16:26,229 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 873 transitions. [2023-08-27 01:16:26,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 873 transitions. [2023-08-27 01:16:26,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:26,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 873 transitions. [2023-08-27 01:16:26,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 145.5) internal successors, (873), 6 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 01:16:26,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:26,235 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:26,235 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 88 flow. Second operand 6 states and 873 transitions. [2023-08-27 01:16:26,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 190 flow [2023-08-27 01:16:26,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:16:26,237 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 143 flow [2023-08-27 01:16:26,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-27 01:16:26,238 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-08-27 01:16:26,238 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 143 flow [2023-08-27 01:16:26,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 140.14285714285714) internal successors, (981), 7 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:26,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:26,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 01:16:26,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 01:16:26,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:26,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:26,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash 639913209, now seen corresponding path program 1 times [2023-08-27 01:16:26,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:26,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795322530] [2023-08-27 01:16:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:26,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:26,504 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 01:16:26,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:26,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795322530] [2023-08-27 01:16:26,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795322530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:16:26,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:16:26,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:16:26,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20712267] [2023-08-27 01:16:26,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:26,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:16:26,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:26,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:16:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:16:26,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 319 [2023-08-27 01:16:26,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:26,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:26,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 319 [2023-08-27 01:16:26,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:26,753 INFO L124 PetriNetUnfolderBase]: 1349/1790 cut-off events. [2023-08-27 01:16:26,754 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 01:16:26,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3628 conditions, 1790 events. 1349/1790 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 7470 event pairs, 213 based on Foata normal form. 0/713 useless extension candidates. Maximal degree in co-relation 3592. Up to 1494 conditions per place. [2023-08-27 01:16:26,763 INFO L140 encePairwiseOnDemand]: 314/319 looper letters, 49 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-27 01:16:26,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 279 flow [2023-08-27 01:16:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:16:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:16:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-27 01:16:26,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49007314524555906 [2023-08-27 01:16:26,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-27 01:16:26,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-27 01:16:26,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:26,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-27 01:16:26,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:26,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:26,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:26,770 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 143 flow. Second operand 3 states and 469 transitions. [2023-08-27 01:16:26,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 279 flow [2023-08-27 01:16:26,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 258 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 01:16:26,773 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 143 flow [2023-08-27 01:16:26,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-08-27 01:16:26,774 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2023-08-27 01:16:26,774 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 143 flow [2023-08-27 01:16:26,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:26,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:26,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:16:26,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 01:16:26,775 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:26,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:26,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1637525854, now seen corresponding path program 1 times [2023-08-27 01:16:26,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:26,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241352236] [2023-08-27 01:16:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:26,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:26,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241352236] [2023-08-27 01:16:26,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241352236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:16:26,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:16:26,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 01:16:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671601440] [2023-08-27 01:16:26,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:26,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:16:26,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:26,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:16:26,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:16:26,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 319 [2023-08-27 01:16:26,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 124.2) internal successors, (621), 5 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:26,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:26,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 319 [2023-08-27 01:16:26,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:27,117 INFO L124 PetriNetUnfolderBase]: 1362/1803 cut-off events. [2023-08-27 01:16:27,117 INFO L125 PetriNetUnfolderBase]: For 288/288 co-relation queries the response was YES. [2023-08-27 01:16:27,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 1803 events. 1362/1803 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 7268 event pairs, 704 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 4133. Up to 1777 conditions per place. [2023-08-27 01:16:27,129 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 36 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-27 01:16:27,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 214 flow [2023-08-27 01:16:27,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:16:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:16:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-27 01:16:27,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4179728317659352 [2023-08-27 01:16:27,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-27 01:16:27,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-27 01:16:27,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:27,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-27 01:16:27,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:27,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:27,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:27,135 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 143 flow. Second operand 3 states and 400 transitions. [2023-08-27 01:16:27,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 214 flow [2023-08-27 01:16:27,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 209 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 01:16:27,138 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 137 flow [2023-08-27 01:16:27,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-27 01:16:27,140 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-08-27 01:16:27,140 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 137 flow [2023-08-27 01:16:27,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.2) internal successors, (621), 5 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:27,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:27,141 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 01:16:27,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 01:16:27,142 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:27,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1625291818, now seen corresponding path program 2 times [2023-08-27 01:16:27,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:27,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632004817] [2023-08-27 01:16:27,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:27,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:27,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:27,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632004817] [2023-08-27 01:16:27,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632004817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:27,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085142388] [2023-08-27 01:16:27,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:16:27,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:27,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:27,228 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:16:27,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 01:16:27,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:16:27,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:16:27,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:16:27,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 01:16:27,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:16:27,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085142388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:16:27,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:16:27,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 01:16:27,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472152975] [2023-08-27 01:16:27,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:27,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:16:27,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:27,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:16:27,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:16:27,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 319 [2023-08-27 01:16:27,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:27,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:27,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 319 [2023-08-27 01:16:27,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:27,490 INFO L124 PetriNetUnfolderBase]: 1166/1545 cut-off events. [2023-08-27 01:16:27,491 INFO L125 PetriNetUnfolderBase]: For 124/180 co-relation queries the response was YES. [2023-08-27 01:16:27,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3409 conditions, 1545 events. 1166/1545 cut-off events. For 124/180 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6074 event pairs, 589 based on Foata normal form. 57/697 useless extension candidates. Maximal degree in co-relation 3392. Up to 1521 conditions per place. [2023-08-27 01:16:27,500 INFO L140 encePairwiseOnDemand]: 317/319 looper letters, 35 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-27 01:16:27,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 199 flow [2023-08-27 01:16:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:16:27,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:16:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-27 01:16:27,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46812957157784746 [2023-08-27 01:16:27,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-27 01:16:27,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-27 01:16:27,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:27,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-27 01:16:27,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:27,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:27,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:27,505 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 137 flow. Second operand 3 states and 448 transitions. [2023-08-27 01:16:27,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 199 flow [2023-08-27 01:16:27,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 180 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-27 01:16:27,507 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 110 flow [2023-08-27 01:16:27,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-08-27 01:16:27,508 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2023-08-27 01:16:27,508 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 110 flow [2023-08-27 01:16:27,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:27,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:27,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:27,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 01:16:27,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-27 01:16:27,714 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:27,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:27,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1143328098, now seen corresponding path program 1 times [2023-08-27 01:16:27,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:27,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912731134] [2023-08-27 01:16:27,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:27,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:16:27,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:27,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912731134] [2023-08-27 01:16:27,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912731134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:27,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021149111] [2023-08-27 01:16:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:27,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:27,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:27,776 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:16:27,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 01:16:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:27,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:16:27,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:27,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:16:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021149111] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:16:27,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:16:27,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-27 01:16:27,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997744739] [2023-08-27 01:16:27,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:16:27,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:16:27,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:16:27,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:16:27,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 319 [2023-08-27 01:16:27,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 110 flow. Second operand has 13 states, 13 states have (on average 124.53846153846153) internal successors, (1619), 13 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:27,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:27,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 319 [2023-08-27 01:16:27,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:28,468 INFO L124 PetriNetUnfolderBase]: 2044/2703 cut-off events. [2023-08-27 01:16:28,468 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-08-27 01:16:28,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5907 conditions, 2703 events. 2044/2703 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11557 event pairs, 327 based on Foata normal form. 0/1332 useless extension candidates. Maximal degree in co-relation 5898. Up to 697 conditions per place. [2023-08-27 01:16:28,483 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 97 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2023-08-27 01:16:28,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 111 transitions, 490 flow [2023-08-27 01:16:28,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:16:28,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:16:28,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1219 transitions. [2023-08-27 01:16:28,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42459073493556254 [2023-08-27 01:16:28,486 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1219 transitions. [2023-08-27 01:16:28,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1219 transitions. [2023-08-27 01:16:28,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:28,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1219 transitions. [2023-08-27 01:16:28,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.44444444444446) internal successors, (1219), 9 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:28,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:28,493 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:28,493 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 110 flow. Second operand 9 states and 1219 transitions. [2023-08-27 01:16:28,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 111 transitions, 490 flow [2023-08-27 01:16:28,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 111 transitions, 489 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:16:28,496 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 163 flow [2023-08-27 01:16:28,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=163, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-08-27 01:16:28,497 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2023-08-27 01:16:28,497 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 163 flow [2023-08-27 01:16:28,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 124.53846153846153) internal successors, (1619), 13 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:28,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:28,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:28,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 01:16:28,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:28,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:28,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1088830730, now seen corresponding path program 1 times [2023-08-27 01:16:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339312142] [2023-08-27 01:16:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:28,749 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 01:16:28,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:28,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339312142] [2023-08-27 01:16:28,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339312142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:16:28,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:16:28,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:16:28,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100877232] [2023-08-27 01:16:28,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:28,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:16:28,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:28,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:16:28,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:16:28,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 319 [2023-08-27 01:16:28,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:28,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:28,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 319 [2023-08-27 01:16:28,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:28,988 INFO L124 PetriNetUnfolderBase]: 1759/2406 cut-off events. [2023-08-27 01:16:28,988 INFO L125 PetriNetUnfolderBase]: For 2705/2865 co-relation queries the response was YES. [2023-08-27 01:16:28,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6335 conditions, 2406 events. 1759/2406 cut-off events. For 2705/2865 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10662 event pairs, 821 based on Foata normal form. 144/1638 useless extension candidates. Maximal degree in co-relation 6322. Up to 2010 conditions per place. [2023-08-27 01:16:29,005 INFO L140 encePairwiseOnDemand]: 314/319 looper letters, 55 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-27 01:16:29,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 360 flow [2023-08-27 01:16:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:16:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:16:29,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-08-27 01:16:29,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48693834900731453 [2023-08-27 01:16:29,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-08-27 01:16:29,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-08-27 01:16:29,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:29,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-08-27 01:16:29,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:29,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:29,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:29,011 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 163 flow. Second operand 3 states and 466 transitions. [2023-08-27 01:16:29,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 360 flow [2023-08-27 01:16:29,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 341 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 01:16:29,014 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 171 flow [2023-08-27 01:16:29,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-08-27 01:16:29,015 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2023-08-27 01:16:29,015 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 171 flow [2023-08-27 01:16:29,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:29,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:29,016 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:29,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 01:16:29,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:29,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1450454708, now seen corresponding path program 1 times [2023-08-27 01:16:29,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:29,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469831561] [2023-08-27 01:16:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:29,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:16:29,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:29,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469831561] [2023-08-27 01:16:29,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469831561] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:29,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640095582] [2023-08-27 01:16:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:29,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:29,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:29,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:16:29,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 01:16:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:29,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:16:29,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:16:29,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:16:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:16:29,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640095582] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:16:29,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:16:29,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 01:16:29,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818734872] [2023-08-27 01:16:29,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:16:29,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:16:29,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:29,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:16:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:16:29,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 319 [2023-08-27 01:16:29,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 171 flow. Second operand has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:29,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:29,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 319 [2023-08-27 01:16:29,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:29,556 INFO L124 PetriNetUnfolderBase]: 2569/3417 cut-off events. [2023-08-27 01:16:29,556 INFO L125 PetriNetUnfolderBase]: For 2281/2429 co-relation queries the response was YES. [2023-08-27 01:16:29,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10466 conditions, 3417 events. 2569/3417 cut-off events. For 2281/2429 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 14832 event pairs, 351 based on Foata normal form. 147/2319 useless extension candidates. Maximal degree in co-relation 10452. Up to 1994 conditions per place. [2023-08-27 01:16:29,575 INFO L140 encePairwiseOnDemand]: 315/319 looper letters, 95 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2023-08-27 01:16:29,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 110 transitions, 631 flow [2023-08-27 01:16:29,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:16:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:16:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 936 transitions. [2023-08-27 01:16:29,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4890282131661442 [2023-08-27 01:16:29,578 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 936 transitions. [2023-08-27 01:16:29,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 936 transitions. [2023-08-27 01:16:29,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:29,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 936 transitions. [2023-08-27 01:16:29,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:29,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:29,584 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:29,584 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 171 flow. Second operand 6 states and 936 transitions. [2023-08-27 01:16:29,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 110 transitions, 631 flow [2023-08-27 01:16:29,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 110 transitions, 610 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-27 01:16:29,591 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 249 flow [2023-08-27 01:16:29,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=249, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-27 01:16:29,591 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-08-27 01:16:29,591 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 249 flow [2023-08-27 01:16:29,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:29,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:29,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:29,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 01:16:29,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:29,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:29,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:29,798 INFO L85 PathProgramCache]: Analyzing trace with hash -605985150, now seen corresponding path program 1 times [2023-08-27 01:16:29,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:29,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156901153] [2023-08-27 01:16:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:29,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:16:29,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:29,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156901153] [2023-08-27 01:16:29,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156901153] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:29,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731314549] [2023-08-27 01:16:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:29,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:29,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:29,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:16:29,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 01:16:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:29,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:16:29,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:16:29,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:16:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:16:29,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731314549] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:16:29,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:16:29,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 01:16:29,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268034385] [2023-08-27 01:16:29,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:16:29,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:16:29,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:29,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:16:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:16:29,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 319 [2023-08-27 01:16:29,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 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) [2023-08-27 01:16:29,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:29,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 319 [2023-08-27 01:16:29,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:30,565 INFO L124 PetriNetUnfolderBase]: 4750/6027 cut-off events. [2023-08-27 01:16:30,565 INFO L125 PetriNetUnfolderBase]: For 12061/12493 co-relation queries the response was YES. [2023-08-27 01:16:30,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20379 conditions, 6027 events. 4750/6027 cut-off events. For 12061/12493 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 25275 event pairs, 931 based on Foata normal form. 416/4348 useless extension candidates. Maximal degree in co-relation 20362. Up to 2803 conditions per place. [2023-08-27 01:16:30,603 INFO L140 encePairwiseOnDemand]: 314/319 looper letters, 158 selfloop transitions, 13 changer transitions 0/174 dead transitions. [2023-08-27 01:16:30,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 174 transitions, 1377 flow [2023-08-27 01:16:30,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:16:30,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:16:30,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1088 transitions. [2023-08-27 01:16:30,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4872369010300045 [2023-08-27 01:16:30,606 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1088 transitions. [2023-08-27 01:16:30,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1088 transitions. [2023-08-27 01:16:30,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:30,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1088 transitions. [2023-08-27 01:16:30,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 155.42857142857142) internal successors, (1088), 7 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:30,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 319.0) internal successors, (2552), 8 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:30,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 319.0) internal successors, (2552), 8 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:30,613 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 249 flow. Second operand 7 states and 1088 transitions. [2023-08-27 01:16:30,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 174 transitions, 1377 flow [2023-08-27 01:16:30,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 174 transitions, 1243 flow, removed 54 selfloop flow, removed 1 redundant places. [2023-08-27 01:16:30,640 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 309 flow [2023-08-27 01:16:30,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2023-08-27 01:16:30,641 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-08-27 01:16:30,641 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 309 flow [2023-08-27 01:16:30,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 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) [2023-08-27 01:16:30,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:30,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:30,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 01:16:30,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 01:16:30,847 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:30,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash -605985192, now seen corresponding path program 1 times [2023-08-27 01:16:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:30,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285553457] [2023-08-27 01:16:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:30,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:16:30,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:30,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285553457] [2023-08-27 01:16:30,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285553457] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:30,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774706809] [2023-08-27 01:16:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:30,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:30,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:30,914 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:16:30,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 01:16:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:30,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:16:30,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:31,004 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 01:16:31,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:16:31,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774706809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:16:31,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:16:31,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 01:16:31,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941307051] [2023-08-27 01:16:31,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:31,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:16:31,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:31,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:16:31,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:16:31,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 319 [2023-08-27 01:16:31,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:31,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:31,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 319 [2023-08-27 01:16:31,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:31,559 INFO L124 PetriNetUnfolderBase]: 3960/5101 cut-off events. [2023-08-27 01:16:31,560 INFO L125 PetriNetUnfolderBase]: For 8571/8956 co-relation queries the response was YES. [2023-08-27 01:16:31,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19183 conditions, 5101 events. 3960/5101 cut-off events. For 8571/8956 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 21731 event pairs, 411 based on Foata normal form. 374/4414 useless extension candidates. Maximal degree in co-relation 19162. Up to 2946 conditions per place. [2023-08-27 01:16:31,599 INFO L140 encePairwiseOnDemand]: 315/319 looper letters, 91 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2023-08-27 01:16:31,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 734 flow [2023-08-27 01:16:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:16:31,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:16:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 617 transitions. [2023-08-27 01:16:31,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835423197492163 [2023-08-27 01:16:31,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 617 transitions. [2023-08-27 01:16:31,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 617 transitions. [2023-08-27 01:16:31,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:31,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 617 transitions. [2023-08-27 01:16:31,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:31,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:31,606 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:31,606 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 309 flow. Second operand 4 states and 617 transitions. [2023-08-27 01:16:31,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 734 flow [2023-08-27 01:16:31,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 101 transitions, 713 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 01:16:31,635 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 275 flow [2023-08-27 01:16:31,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-08-27 01:16:31,636 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-08-27 01:16:31,636 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 275 flow [2023-08-27 01:16:31,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:31,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:31,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:31,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 01:16:31,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:31,843 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:31,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:31,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1600860071, now seen corresponding path program 1 times [2023-08-27 01:16:31,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:31,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515400748] [2023-08-27 01:16:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:31,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:31,890 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 01:16:31,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:31,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515400748] [2023-08-27 01:16:31,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515400748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:16:31,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:16:31,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:16:31,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752900262] [2023-08-27 01:16:31,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:31,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:16:31,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:31,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:16:31,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 01:16:31,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 319 [2023-08-27 01:16:31,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:31,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:31,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 319 [2023-08-27 01:16:31,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:32,247 INFO L124 PetriNetUnfolderBase]: 2567/3405 cut-off events. [2023-08-27 01:16:32,247 INFO L125 PetriNetUnfolderBase]: For 7905/8377 co-relation queries the response was YES. [2023-08-27 01:16:32,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13049 conditions, 3405 events. 2567/3405 cut-off events. For 7905/8377 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13529 event pairs, 794 based on Foata normal form. 472/3692 useless extension candidates. Maximal degree in co-relation 13027. Up to 1916 conditions per place. [2023-08-27 01:16:32,276 INFO L140 encePairwiseOnDemand]: 315/319 looper letters, 78 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2023-08-27 01:16:32,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 618 flow [2023-08-27 01:16:32,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:16:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:16:32,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 581 transitions. [2023-08-27 01:16:32,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553291536050157 [2023-08-27 01:16:32,279 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 581 transitions. [2023-08-27 01:16:32,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 581 transitions. [2023-08-27 01:16:32,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:32,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 581 transitions. [2023-08-27 01:16:32,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:32,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:32,283 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:32,283 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 275 flow. Second operand 4 states and 581 transitions. [2023-08-27 01:16:32,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 618 flow [2023-08-27 01:16:32,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 84 transitions, 602 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:16:32,319 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 270 flow [2023-08-27 01:16:32,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2023-08-27 01:16:32,321 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-08-27 01:16:32,321 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 270 flow [2023-08-27 01:16:32,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:32,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:32,321 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:32,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 01:16:32,321 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:32,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash -272898261, now seen corresponding path program 1 times [2023-08-27 01:16:32,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:32,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833342747] [2023-08-27 01:16:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:32,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:32,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:32,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833342747] [2023-08-27 01:16:32,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833342747] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:32,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555904848] [2023-08-27 01:16:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:32,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:32,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:32,415 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:16:32,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 01:16:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:32,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:16:32,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:16:32,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:16:32,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555904848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:16:32,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:16:32,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 01:16:32,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582348995] [2023-08-27 01:16:32,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:32,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:16:32,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:32,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:16:32,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:16:32,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 319 [2023-08-27 01:16:32,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:32,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:32,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 319 [2023-08-27 01:16:32,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:32,738 INFO L124 PetriNetUnfolderBase]: 2055/2691 cut-off events. [2023-08-27 01:16:32,738 INFO L125 PetriNetUnfolderBase]: For 6435/6824 co-relation queries the response was YES. [2023-08-27 01:16:32,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9598 conditions, 2691 events. 2055/2691 cut-off events. For 6435/6824 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10253 event pairs, 994 based on Foata normal form. 614/3250 useless extension candidates. Maximal degree in co-relation 9575. Up to 2669 conditions per place. [2023-08-27 01:16:32,756 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 47 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-27 01:16:32,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 346 flow [2023-08-27 01:16:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:16:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:16:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-08-27 01:16:32,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608150470219436 [2023-08-27 01:16:32,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-08-27 01:16:32,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-08-27 01:16:32,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:32,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-08-27 01:16:32,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:32,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:32,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:32,761 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 270 flow. Second operand 3 states and 441 transitions. [2023-08-27 01:16:32,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 346 flow [2023-08-27 01:16:32,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 305 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-27 01:16:32,807 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 211 flow [2023-08-27 01:16:32,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-08-27 01:16:32,808 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2023-08-27 01:16:32,808 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 211 flow [2023-08-27 01:16:32,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:32,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:32,808 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:32,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 01:16:33,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:33,015 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:33,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:33,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1155474678, now seen corresponding path program 2 times [2023-08-27 01:16:33,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:33,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971010313] [2023-08-27 01:16:33,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:33,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:16:33,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971010313] [2023-08-27 01:16:33,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971010313] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:33,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134161492] [2023-08-27 01:16:33,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:16:33,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:33,091 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 01:16:33,108 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 01:16:33,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:16:33,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:16:33,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:16:33,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 01:16:33,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:16:33,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134161492] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:16:33,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:16:33,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-27 01:16:33,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471263678] [2023-08-27 01:16:33,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:33,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:16:33,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:33,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:16:33,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:16:33,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 319 [2023-08-27 01:16:33,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:33,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:33,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 319 [2023-08-27 01:16:33,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:33,374 INFO L124 PetriNetUnfolderBase]: 1741/2293 cut-off events. [2023-08-27 01:16:33,374 INFO L125 PetriNetUnfolderBase]: For 2657/2902 co-relation queries the response was YES. [2023-08-27 01:16:33,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 2293 events. 1741/2293 cut-off events. For 2657/2902 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8214 event pairs, 882 based on Foata normal form. 329/2473 useless extension candidates. Maximal degree in co-relation 7034. Up to 2286 conditions per place. [2023-08-27 01:16:33,385 INFO L140 encePairwiseOnDemand]: 317/319 looper letters, 47 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-27 01:16:33,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 297 flow [2023-08-27 01:16:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:16:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:16:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-27 01:16:33,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660397074190178 [2023-08-27 01:16:33,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-27 01:16:33,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-27 01:16:33,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:33,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-27 01:16:33,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:33,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:33,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 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 01:16:33,390 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 211 flow. Second operand 3 states and 446 transitions. [2023-08-27 01:16:33,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 297 flow [2023-08-27 01:16:33,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 280 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 01:16:33,408 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 186 flow [2023-08-27 01:16:33,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-08-27 01:16:33,409 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2023-08-27 01:16:33,409 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 186 flow [2023-08-27 01:16:33,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:33,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:33,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:33,415 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 01:16:33,615 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,SelfDestructingSolverStorable13 [2023-08-27 01:16:33,615 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:33,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:33,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2124153488, now seen corresponding path program 1 times [2023-08-27 01:16:33,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:33,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235897147] [2023-08-27 01:16:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:33,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:33,718 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 01:16:33,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:33,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235897147] [2023-08-27 01:16:33,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235897147] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812910607] [2023-08-27 01:16:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:33,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:33,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:33,720 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 01:16:33,729 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 01:16:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:33,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:16:33,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:33,857 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 01:16:33,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:16:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812910607] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:33,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 01:16:33,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-27 01:16:33,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090754741] [2023-08-27 01:16:33,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:33,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:16:33,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:33,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:16:33,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-27 01:16:33,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 319 [2023-08-27 01:16:33,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 126.8) internal successors, (634), 5 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:33,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:33,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 319 [2023-08-27 01:16:33,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:34,103 INFO L124 PetriNetUnfolderBase]: 2032/2680 cut-off events. [2023-08-27 01:16:34,104 INFO L125 PetriNetUnfolderBase]: For 1773/1859 co-relation queries the response was YES. [2023-08-27 01:16:34,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6954 conditions, 2680 events. 2032/2680 cut-off events. For 1773/1859 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10275 event pairs, 490 based on Foata normal form. 186/2531 useless extension candidates. Maximal degree in co-relation 6940. Up to 2247 conditions per place. [2023-08-27 01:16:34,117 INFO L140 encePairwiseOnDemand]: 314/319 looper letters, 58 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-08-27 01:16:34,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 357 flow [2023-08-27 01:16:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:16:34,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:16:34,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2023-08-27 01:16:34,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2023-08-27 01:16:34,119 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2023-08-27 01:16:34,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2023-08-27 01:16:34,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:34,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2023-08-27 01:16:34,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:34,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:34,124 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:34,124 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 186 flow. Second operand 5 states and 649 transitions. [2023-08-27 01:16:34,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 357 flow [2023-08-27 01:16:34,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:16:34,141 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 187 flow [2023-08-27 01:16:34,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-08-27 01:16:34,142 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2023-08-27 01:16:34,142 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 187 flow [2023-08-27 01:16:34,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.8) internal successors, (634), 5 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:34,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:34,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:34,152 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 01:16:34,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 01:16:34,351 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:34,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:34,352 INFO L85 PathProgramCache]: Analyzing trace with hash -452869543, now seen corresponding path program 1 times [2023-08-27 01:16:34,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:34,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672197703] [2023-08-27 01:16:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:34,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:16:34,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:34,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672197703] [2023-08-27 01:16:34,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672197703] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:34,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544482483] [2023-08-27 01:16:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:34,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:34,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:34,447 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 01:16:34,481 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 01:16:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:34,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:16:34,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:16:34,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:16:34,686 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 01:16:34,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544482483] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:34,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 01:16:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-08-27 01:16:34,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130703904] [2023-08-27 01:16:34,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:16:34,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:16:34,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:34,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:16:34,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:16:34,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:16:34,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 187 flow. Second operand has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:34,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:34,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:16:34,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:35,004 INFO L124 PetriNetUnfolderBase]: 2343/3132 cut-off events. [2023-08-27 01:16:35,004 INFO L125 PetriNetUnfolderBase]: For 2135/2275 co-relation queries the response was YES. [2023-08-27 01:16:35,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8433 conditions, 3132 events. 2343/3132 cut-off events. For 2135/2275 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12097 event pairs, 254 based on Foata normal form. 140/3111 useless extension candidates. Maximal degree in co-relation 8418. Up to 1559 conditions per place. [2023-08-27 01:16:35,018 INFO L140 encePairwiseOnDemand]: 311/319 looper letters, 87 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2023-08-27 01:16:35,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 111 transitions, 649 flow [2023-08-27 01:16:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:16:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:16:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 973 transitions. [2023-08-27 01:16:35,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.381269592476489 [2023-08-27 01:16:35,021 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 973 transitions. [2023-08-27 01:16:35,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 973 transitions. [2023-08-27 01:16:35,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:35,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 973 transitions. [2023-08-27 01:16:35,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 121.625) internal successors, (973), 8 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:35,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:35,027 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:35,027 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 187 flow. Second operand 8 states and 973 transitions. [2023-08-27 01:16:35,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 111 transitions, 649 flow [2023-08-27 01:16:35,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 111 transitions, 625 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 01:16:35,036 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 277 flow [2023-08-27 01:16:35,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=277, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-08-27 01:16:35,037 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-27 01:16:35,037 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 277 flow [2023-08-27 01:16:35,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:35,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:35,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:35,045 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 01:16:35,243 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,SelfDestructingSolverStorable15 [2023-08-27 01:16:35,243 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:35,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:35,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1163628048, now seen corresponding path program 1 times [2023-08-27 01:16:35,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:35,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777836856] [2023-08-27 01:16:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:35,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:36,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:36,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777836856] [2023-08-27 01:16:36,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777836856] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:36,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141602006] [2023-08-27 01:16:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:36,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:36,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:36,560 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 01:16:36,579 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 01:16:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:36,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-27 01:16:36,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:36,706 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-27 01:16:36,968 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-27 01:16:37,074 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-27 01:16:37,366 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:16:37,367 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 42 [2023-08-27 01:16:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:37,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:16:38,221 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:16:38,222 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 347 treesize of output 315 [2023-08-27 01:16:38,237 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 175 [2023-08-27 01:16:38,251 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 169 [2023-08-27 01:16:38,263 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 157 [2023-08-27 01:16:38,274 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 145 [2023-08-27 01:16:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:39,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141602006] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:16:39,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:16:39,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2023-08-27 01:16:39,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324032389] [2023-08-27 01:16:39,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:16:39,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 01:16:39,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:39,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 01:16:39,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1033, Unknown=6, NotChecked=0, Total=1190 [2023-08-27 01:16:39,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 319 [2023-08-27 01:16:39,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 277 flow. Second operand has 35 states, 35 states have (on average 87.77142857142857) internal successors, (3072), 35 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:39,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:39,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 319 [2023-08-27 01:16:39,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:45,870 INFO L124 PetriNetUnfolderBase]: 3283/4526 cut-off events. [2023-08-27 01:16:45,871 INFO L125 PetriNetUnfolderBase]: For 5773/5773 co-relation queries the response was YES. [2023-08-27 01:16:45,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14636 conditions, 4526 events. 3283/4526 cut-off events. For 5773/5773 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 19169 event pairs, 382 based on Foata normal form. 2/4314 useless extension candidates. Maximal degree in co-relation 14619. Up to 3577 conditions per place. [2023-08-27 01:16:45,901 INFO L140 encePairwiseOnDemand]: 307/319 looper letters, 211 selfloop transitions, 68 changer transitions 10/289 dead transitions. [2023-08-27 01:16:45,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 289 transitions, 1789 flow [2023-08-27 01:16:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 01:16:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 01:16:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2203 transitions. [2023-08-27 01:16:45,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3002589614283767 [2023-08-27 01:16:45,908 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2203 transitions. [2023-08-27 01:16:45,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2203 transitions. [2023-08-27 01:16:45,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:45,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2203 transitions. [2023-08-27 01:16:45,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 95.78260869565217) internal successors, (2203), 23 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:45,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 319.0) internal successors, (7656), 24 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:45,923 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 319.0) internal successors, (7656), 24 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:45,923 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 277 flow. Second operand 23 states and 2203 transitions. [2023-08-27 01:16:45,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 289 transitions, 1789 flow [2023-08-27 01:16:45,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 289 transitions, 1736 flow, removed 25 selfloop flow, removed 2 redundant places. [2023-08-27 01:16:45,975 INFO L231 Difference]: Finished difference. Result has 91 places, 119 transitions, 762 flow [2023-08-27 01:16:45,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=762, PETRI_PLACES=91, PETRI_TRANSITIONS=119} [2023-08-27 01:16:45,976 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 53 predicate places. [2023-08-27 01:16:45,976 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 119 transitions, 762 flow [2023-08-27 01:16:45,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 87.77142857142857) internal successors, (3072), 35 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:45,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:45,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:45,985 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 01:16:46,183 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,SelfDestructingSolverStorable16 [2023-08-27 01:16:46,183 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:46,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:46,183 INFO L85 PathProgramCache]: Analyzing trace with hash 302830458, now seen corresponding path program 2 times [2023-08-27 01:16:46,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:46,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958811958] [2023-08-27 01:16:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:46,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:46,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:46,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958811958] [2023-08-27 01:16:46,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958811958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:46,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27297685] [2023-08-27 01:16:46,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:16:46,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:46,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:46,821 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 01:16:46,824 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 01:16:46,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:16:46,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:16:46,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:16:46,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:47,297 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:16:47,298 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 79 [2023-08-27 01:16:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:47,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:16:47,785 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:16:47,785 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 45 [2023-08-27 01:16:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:48,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27297685] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:16:48,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:16:48,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2023-08-27 01:16:48,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444885887] [2023-08-27 01:16:48,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:16:48,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:16:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:16:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:16:48,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 319 [2023-08-27 01:16:48,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 119 transitions, 762 flow. Second operand has 25 states, 25 states have (on average 98.12) internal successors, (2453), 25 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:48,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:48,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 319 [2023-08-27 01:16:48,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:49,150 INFO L124 PetriNetUnfolderBase]: 3379/4720 cut-off events. [2023-08-27 01:16:49,150 INFO L125 PetriNetUnfolderBase]: For 10199/10199 co-relation queries the response was YES. [2023-08-27 01:16:49,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17863 conditions, 4720 events. 3379/4720 cut-off events. For 10199/10199 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 20361 event pairs, 672 based on Foata normal form. 2/4516 useless extension candidates. Maximal degree in co-relation 17833. Up to 4407 conditions per place. [2023-08-27 01:16:49,180 INFO L140 encePairwiseOnDemand]: 306/319 looper letters, 138 selfloop transitions, 66 changer transitions 7/211 dead transitions. [2023-08-27 01:16:49,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 211 transitions, 1679 flow [2023-08-27 01:16:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 01:16:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 01:16:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1632 transitions. [2023-08-27 01:16:49,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31974921630094044 [2023-08-27 01:16:49,184 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1632 transitions. [2023-08-27 01:16:49,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1632 transitions. [2023-08-27 01:16:49,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:49,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1632 transitions. [2023-08-27 01:16:49,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 102.0) internal successors, (1632), 16 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:49,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 319.0) internal successors, (5423), 17 states have internal predecessors, (5423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:49,194 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 319.0) internal successors, (5423), 17 states have internal predecessors, (5423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:49,194 INFO L175 Difference]: Start difference. First operand has 91 places, 119 transitions, 762 flow. Second operand 16 states and 1632 transitions. [2023-08-27 01:16:49,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 211 transitions, 1679 flow [2023-08-27 01:16:49,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 211 transitions, 1637 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-27 01:16:49,249 INFO L231 Difference]: Finished difference. Result has 110 places, 165 transitions, 1278 flow [2023-08-27 01:16:49,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1278, PETRI_PLACES=110, PETRI_TRANSITIONS=165} [2023-08-27 01:16:49,250 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 72 predicate places. [2023-08-27 01:16:49,250 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 165 transitions, 1278 flow [2023-08-27 01:16:49,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 98.12) internal successors, (2453), 25 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:49,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:49,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:49,263 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 01:16:49,456 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,SelfDestructingSolverStorable17 [2023-08-27 01:16:49,457 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:49,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:49,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1810008002, now seen corresponding path program 3 times [2023-08-27 01:16:49,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:49,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458166576] [2023-08-27 01:16:49,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:49,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:50,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:50,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458166576] [2023-08-27 01:16:50,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458166576] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:50,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702084923] [2023-08-27 01:16:50,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:16:50,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:50,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:50,473 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 01:16:50,498 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 01:16:50,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 01:16:50,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:16:50,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:16:50,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:51,020 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:16:51,021 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 84 [2023-08-27 01:16:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:51,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:16:51,578 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:16:51,578 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 45 [2023-08-27 01:16:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:51,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702084923] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:16:51,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:16:51,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 27 [2023-08-27 01:16:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623147377] [2023-08-27 01:16:51,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:16:51,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 01:16:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:51,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 01:16:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2023-08-27 01:16:51,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 319 [2023-08-27 01:16:51,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 165 transitions, 1278 flow. Second operand has 29 states, 29 states have (on average 88.03448275862068) internal successors, (2553), 29 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:51,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:51,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 319 [2023-08-27 01:16:51,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:53,269 INFO L124 PetriNetUnfolderBase]: 3715/5266 cut-off events. [2023-08-27 01:16:53,269 INFO L125 PetriNetUnfolderBase]: For 15537/15537 co-relation queries the response was YES. [2023-08-27 01:16:53,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21818 conditions, 5266 events. 3715/5266 cut-off events. For 15537/15537 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 23966 event pairs, 702 based on Foata normal form. 2/5058 useless extension candidates. Maximal degree in co-relation 21780. Up to 4759 conditions per place. [2023-08-27 01:16:53,299 INFO L140 encePairwiseOnDemand]: 305/319 looper letters, 179 selfloop transitions, 93 changer transitions 7/279 dead transitions. [2023-08-27 01:16:53,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 279 transitions, 2568 flow [2023-08-27 01:16:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 01:16:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 01:16:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1493 transitions. [2023-08-27 01:16:53,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2925156739811912 [2023-08-27 01:16:53,302 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1493 transitions. [2023-08-27 01:16:53,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1493 transitions. [2023-08-27 01:16:53,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:53,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1493 transitions. [2023-08-27 01:16:53,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 93.3125) internal successors, (1493), 16 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:53,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 319.0) internal successors, (5423), 17 states have internal predecessors, (5423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:53,310 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 319.0) internal successors, (5423), 17 states have internal predecessors, (5423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:53,310 INFO L175 Difference]: Start difference. First operand has 110 places, 165 transitions, 1278 flow. Second operand 16 states and 1493 transitions. [2023-08-27 01:16:53,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 279 transitions, 2568 flow [2023-08-27 01:16:53,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 279 transitions, 2413 flow, removed 54 selfloop flow, removed 4 redundant places. [2023-08-27 01:16:53,398 INFO L231 Difference]: Finished difference. Result has 128 places, 216 transitions, 1902 flow [2023-08-27 01:16:53,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1902, PETRI_PLACES=128, PETRI_TRANSITIONS=216} [2023-08-27 01:16:53,398 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 90 predicate places. [2023-08-27 01:16:53,398 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 216 transitions, 1902 flow [2023-08-27 01:16:53,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 88.03448275862068) internal successors, (2553), 29 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:53,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:53,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:53,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 01:16:53,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:53,605 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:53,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:53,606 INFO L85 PathProgramCache]: Analyzing trace with hash 681718818, now seen corresponding path program 4 times [2023-08-27 01:16:53,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:53,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714561601] [2023-08-27 01:16:53,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:53,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:54,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:54,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714561601] [2023-08-27 01:16:54,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714561601] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:54,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323685185] [2023-08-27 01:16:54,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:16:54,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:54,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:54,545 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:16:54,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 01:16:54,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:16:54,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:16:54,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:16:54,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:55,028 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:16:55,029 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 76 [2023-08-27 01:16:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:55,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:16:55,421 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:16:55,422 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 45 [2023-08-27 01:16:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:55,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323685185] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:16:55,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:16:55,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 26 [2023-08-27 01:16:55,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681622353] [2023-08-27 01:16:55,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:16:55,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 01:16:55,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:55,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 01:16:55,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2023-08-27 01:16:55,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 319 [2023-08-27 01:16:55,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 216 transitions, 1902 flow. Second operand has 28 states, 28 states have (on average 88.10714285714286) internal successors, (2467), 28 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:55,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:55,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 319 [2023-08-27 01:16:55,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:16:57,186 INFO L124 PetriNetUnfolderBase]: 3833/5502 cut-off events. [2023-08-27 01:16:57,186 INFO L125 PetriNetUnfolderBase]: For 20111/20111 co-relation queries the response was YES. [2023-08-27 01:16:57,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25081 conditions, 5502 events. 3833/5502 cut-off events. For 20111/20111 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 25909 event pairs, 746 based on Foata normal form. 2/5298 useless extension candidates. Maximal degree in co-relation 25037. Up to 5101 conditions per place. [2023-08-27 01:16:57,219 INFO L140 encePairwiseOnDemand]: 306/319 looper letters, 190 selfloop transitions, 106 changer transitions 7/303 dead transitions. [2023-08-27 01:16:57,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 303 transitions, 3140 flow [2023-08-27 01:16:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 01:16:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 01:16:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1653 transitions. [2023-08-27 01:16:57,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2878787878787879 [2023-08-27 01:16:57,222 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1653 transitions. [2023-08-27 01:16:57,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1653 transitions. [2023-08-27 01:16:57,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:16:57,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1653 transitions. [2023-08-27 01:16:57,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 91.83333333333333) internal successors, (1653), 18 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:57,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 319.0) internal successors, (6061), 19 states have internal predecessors, (6061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:57,231 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 319.0) internal successors, (6061), 19 states have internal predecessors, (6061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:57,231 INFO L175 Difference]: Start difference. First operand has 128 places, 216 transitions, 1902 flow. Second operand 18 states and 1653 transitions. [2023-08-27 01:16:57,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 303 transitions, 3140 flow [2023-08-27 01:16:57,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 303 transitions, 3025 flow, removed 43 selfloop flow, removed 3 redundant places. [2023-08-27 01:16:57,313 INFO L231 Difference]: Finished difference. Result has 146 places, 253 transitions, 2480 flow [2023-08-27 01:16:57,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2480, PETRI_PLACES=146, PETRI_TRANSITIONS=253} [2023-08-27 01:16:57,314 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 108 predicate places. [2023-08-27 01:16:57,314 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 253 transitions, 2480 flow [2023-08-27 01:16:57,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 88.10714285714286) internal successors, (2467), 28 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:57,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:16:57,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:16:57,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 01:16:57,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:57,521 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:16:57,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:16:57,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1850471696, now seen corresponding path program 5 times [2023-08-27 01:16:57,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:16:57,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996609048] [2023-08-27 01:16:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:16:57,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:16:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:16:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:58,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:16:58,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996609048] [2023-08-27 01:16:58,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996609048] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:16:58,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238809834] [2023-08-27 01:16:58,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:16:58,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:16:58,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:16:58,501 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:16:58,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 01:16:58,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:16:58,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:16:58,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 01:16:58,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:16:59,065 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:16:59,067 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:16:59,068 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2023-08-27 01:16:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:59,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:16:59,237 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:16:59,237 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 45 [2023-08-27 01:16:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:16:59,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238809834] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:16:59,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:16:59,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 8] total 25 [2023-08-27 01:16:59,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477390570] [2023-08-27 01:16:59,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:16:59,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 01:16:59,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:16:59,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 01:16:59,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-08-27 01:16:59,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 319 [2023-08-27 01:16:59,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 253 transitions, 2480 flow. Second operand has 27 states, 27 states have (on average 88.29629629629629) internal successors, (2384), 27 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:16:59,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:16:59,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 319 [2023-08-27 01:16:59,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:01,105 INFO L124 PetriNetUnfolderBase]: 4033/5803 cut-off events. [2023-08-27 01:17:01,105 INFO L125 PetriNetUnfolderBase]: For 23218/23218 co-relation queries the response was YES. [2023-08-27 01:17:01,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27292 conditions, 5803 events. 4033/5803 cut-off events. For 23218/23218 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 27952 event pairs, 780 based on Foata normal form. 5/5612 useless extension candidates. Maximal degree in co-relation 27243. Up to 5065 conditions per place. [2023-08-27 01:17:01,145 INFO L140 encePairwiseOnDemand]: 306/319 looper letters, 242 selfloop transitions, 111 changer transitions 8/361 dead transitions. [2023-08-27 01:17:01,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 361 transitions, 4069 flow [2023-08-27 01:17:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 01:17:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 01:17:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1776 transitions. [2023-08-27 01:17:01,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2930209536380135 [2023-08-27 01:17:01,148 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1776 transitions. [2023-08-27 01:17:01,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1776 transitions. [2023-08-27 01:17:01,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:01,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1776 transitions. [2023-08-27 01:17:01,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 93.47368421052632) internal successors, (1776), 19 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:01,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 319.0) internal successors, (6380), 20 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:01,156 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 319.0) internal successors, (6380), 20 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:01,157 INFO L175 Difference]: Start difference. First operand has 146 places, 253 transitions, 2480 flow. Second operand 19 states and 1776 transitions. [2023-08-27 01:17:01,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 361 transitions, 4069 flow [2023-08-27 01:17:01,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 361 transitions, 3824 flow, removed 60 selfloop flow, removed 7 redundant places. [2023-08-27 01:17:01,267 INFO L231 Difference]: Finished difference. Result has 159 places, 273 transitions, 2784 flow [2023-08-27 01:17:01,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2784, PETRI_PLACES=159, PETRI_TRANSITIONS=273} [2023-08-27 01:17:01,268 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 121 predicate places. [2023-08-27 01:17:01,268 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 273 transitions, 2784 flow [2023-08-27 01:17:01,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 88.29629629629629) internal successors, (2384), 27 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:01,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:01,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:01,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:01,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:01,475 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:01,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:01,475 INFO L85 PathProgramCache]: Analyzing trace with hash 672454178, now seen corresponding path program 6 times [2023-08-27 01:17:01,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:01,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796866098] [2023-08-27 01:17:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:01,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:02,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:02,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796866098] [2023-08-27 01:17:02,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796866098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:02,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291251787] [2023-08-27 01:17:02,333 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:17:02,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:02,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:02,335 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:02,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 01:17:02,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 01:17:02,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:02,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 01:17:02,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:02,750 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:02,751 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 71 [2023-08-27 01:17:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:17:03,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:03,155 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:03,156 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 45 [2023-08-27 01:17:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:17:03,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291251787] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:03,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:03,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 7] total 26 [2023-08-27 01:17:03,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796895374] [2023-08-27 01:17:03,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:03,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 01:17:03,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:03,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 01:17:03,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-08-27 01:17:03,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 319 [2023-08-27 01:17:03,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 273 transitions, 2784 flow. Second operand has 28 states, 28 states have (on average 88.17857142857143) internal successors, (2469), 28 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:03,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:03,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 319 [2023-08-27 01:17:03,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:05,303 INFO L124 PetriNetUnfolderBase]: 4605/6626 cut-off events. [2023-08-27 01:17:05,303 INFO L125 PetriNetUnfolderBase]: For 30163/30163 co-relation queries the response was YES. [2023-08-27 01:17:05,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32989 conditions, 6626 events. 4605/6626 cut-off events. For 30163/30163 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 32483 event pairs, 856 based on Foata normal form. 3/6397 useless extension candidates. Maximal degree in co-relation 32936. Up to 5804 conditions per place. [2023-08-27 01:17:05,341 INFO L140 encePairwiseOnDemand]: 304/319 looper letters, 268 selfloop transitions, 177 changer transitions 19/464 dead transitions. [2023-08-27 01:17:05,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 464 transitions, 5091 flow [2023-08-27 01:17:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 01:17:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 01:17:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2135 transitions. [2023-08-27 01:17:05,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2909908682022625 [2023-08-27 01:17:05,343 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2135 transitions. [2023-08-27 01:17:05,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2135 transitions. [2023-08-27 01:17:05,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:05,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2135 transitions. [2023-08-27 01:17:05,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 92.82608695652173) internal successors, (2135), 23 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:05,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 319.0) internal successors, (7656), 24 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:05,353 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 319.0) internal successors, (7656), 24 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:05,353 INFO L175 Difference]: Start difference. First operand has 159 places, 273 transitions, 2784 flow. Second operand 23 states and 2135 transitions. [2023-08-27 01:17:05,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 464 transitions, 5091 flow [2023-08-27 01:17:05,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 464 transitions, 4858 flow, removed 39 selfloop flow, removed 11 redundant places. [2023-08-27 01:17:05,505 INFO L231 Difference]: Finished difference. Result has 181 places, 379 transitions, 4154 flow [2023-08-27 01:17:05,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=2575, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4154, PETRI_PLACES=181, PETRI_TRANSITIONS=379} [2023-08-27 01:17:05,506 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 143 predicate places. [2023-08-27 01:17:05,506 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 379 transitions, 4154 flow [2023-08-27 01:17:05,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 88.17857142857143) internal successors, (2469), 28 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:05,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:05,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:05,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:05,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 01:17:05,713 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:05,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:05,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1109281336, now seen corresponding path program 7 times [2023-08-27 01:17:05,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:05,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512570159] [2023-08-27 01:17:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:05,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:06,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:06,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512570159] [2023-08-27 01:17:06,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512570159] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:06,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23000412] [2023-08-27 01:17:06,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:17:06,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:06,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:06,273 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:06,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 01:17:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:06,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 01:17:06,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:06,842 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:06,842 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 76 [2023-08-27 01:17:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:07,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:07,373 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:07,373 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 45 [2023-08-27 01:17:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:07,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23000412] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:07,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:07,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2023-08-27 01:17:07,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87763475] [2023-08-27 01:17:07,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:07,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:17:07,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:07,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:17:07,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-08-27 01:17:07,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 319 [2023-08-27 01:17:07,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 379 transitions, 4154 flow. Second operand has 20 states, 20 states have (on average 106.5) internal successors, (2130), 20 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:07,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:07,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 319 [2023-08-27 01:17:07,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:08,689 INFO L124 PetriNetUnfolderBase]: 4522/6530 cut-off events. [2023-08-27 01:17:08,689 INFO L125 PetriNetUnfolderBase]: For 42458/42544 co-relation queries the response was YES. [2023-08-27 01:17:08,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37142 conditions, 6530 events. 4522/6530 cut-off events. For 42458/42544 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 32810 event pairs, 839 based on Foata normal form. 45/6298 useless extension candidates. Maximal degree in co-relation 37077. Up to 6023 conditions per place. [2023-08-27 01:17:08,738 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 337 selfloop transitions, 86 changer transitions 13/448 dead transitions. [2023-08-27 01:17:08,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 448 transitions, 5592 flow [2023-08-27 01:17:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 01:17:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 01:17:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1345 transitions. [2023-08-27 01:17:08,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3513584117032393 [2023-08-27 01:17:08,740 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1345 transitions. [2023-08-27 01:17:08,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1345 transitions. [2023-08-27 01:17:08,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:08,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1345 transitions. [2023-08-27 01:17:08,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 112.08333333333333) internal successors, (1345), 12 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:08,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 319.0) internal successors, (4147), 13 states have internal predecessors, (4147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:08,745 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 319.0) internal successors, (4147), 13 states have internal predecessors, (4147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:08,745 INFO L175 Difference]: Start difference. First operand has 181 places, 379 transitions, 4154 flow. Second operand 12 states and 1345 transitions. [2023-08-27 01:17:08,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 448 transitions, 5592 flow [2023-08-27 01:17:08,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 448 transitions, 5099 flow, removed 221 selfloop flow, removed 5 redundant places. [2023-08-27 01:17:08,911 INFO L231 Difference]: Finished difference. Result has 190 places, 389 transitions, 4031 flow [2023-08-27 01:17:08,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4031, PETRI_PLACES=190, PETRI_TRANSITIONS=389} [2023-08-27 01:17:08,911 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 152 predicate places. [2023-08-27 01:17:08,911 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 389 transitions, 4031 flow [2023-08-27 01:17:08,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 106.5) internal successors, (2130), 20 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:08,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:08,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:08,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:09,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:09,112 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:09,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1261593338, now seen corresponding path program 8 times [2023-08-27 01:17:09,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580105782] [2023-08-27 01:17:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:09,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:09,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580105782] [2023-08-27 01:17:09,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580105782] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:09,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181117424] [2023-08-27 01:17:09,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:17:09,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:09,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:09,659 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:09,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 01:17:09,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:17:09,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:09,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:17:09,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:10,235 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:10,236 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 84 [2023-08-27 01:17:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:10,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:10,819 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:10,819 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 45 [2023-08-27 01:17:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:11,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181117424] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:11,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:11,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2023-08-27 01:17:11,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886227258] [2023-08-27 01:17:11,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:11,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:17:11,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:11,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:17:11,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:17:11,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 319 [2023-08-27 01:17:11,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 389 transitions, 4031 flow. Second operand has 25 states, 25 states have (on average 98.08) internal successors, (2452), 25 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:11,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:11,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 319 [2023-08-27 01:17:11,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:13,301 INFO L124 PetriNetUnfolderBase]: 4947/7149 cut-off events. [2023-08-27 01:17:13,301 INFO L125 PetriNetUnfolderBase]: For 46099/46099 co-relation queries the response was YES. [2023-08-27 01:17:13,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40509 conditions, 7149 events. 4947/7149 cut-off events. For 46099/46099 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 35841 event pairs, 790 based on Foata normal form. 2/6941 useless extension candidates. Maximal degree in co-relation 40442. Up to 6321 conditions per place. [2023-08-27 01:17:13,354 INFO L140 encePairwiseOnDemand]: 304/319 looper letters, 283 selfloop transitions, 204 changer transitions 7/494 dead transitions. [2023-08-27 01:17:13,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 494 transitions, 5878 flow [2023-08-27 01:17:13,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 01:17:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 01:17:13,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2156 transitions. [2023-08-27 01:17:13,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3218390804597701 [2023-08-27 01:17:13,357 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2156 transitions. [2023-08-27 01:17:13,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2156 transitions. [2023-08-27 01:17:13,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:13,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2156 transitions. [2023-08-27 01:17:13,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 102.66666666666667) internal successors, (2156), 21 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:13,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 319.0) internal successors, (7018), 22 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:13,364 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 319.0) internal successors, (7018), 22 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:13,364 INFO L175 Difference]: Start difference. First operand has 190 places, 389 transitions, 4031 flow. Second operand 21 states and 2156 transitions. [2023-08-27 01:17:13,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 494 transitions, 5878 flow [2023-08-27 01:17:13,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 494 transitions, 5737 flow, removed 25 selfloop flow, removed 6 redundant places. [2023-08-27 01:17:13,548 INFO L231 Difference]: Finished difference. Result has 209 places, 432 transitions, 4977 flow [2023-08-27 01:17:13,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=3890, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4977, PETRI_PLACES=209, PETRI_TRANSITIONS=432} [2023-08-27 01:17:13,548 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 171 predicate places. [2023-08-27 01:17:13,549 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 432 transitions, 4977 flow [2023-08-27 01:17:13,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 98.08) internal successors, (2452), 25 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:13,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:13,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:13,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:13,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:13,751 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:13,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:13,751 INFO L85 PathProgramCache]: Analyzing trace with hash -84432894, now seen corresponding path program 9 times [2023-08-27 01:17:13,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:13,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640183811] [2023-08-27 01:17:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:13,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:14,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:14,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640183811] [2023-08-27 01:17:14,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640183811] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:14,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263570951] [2023-08-27 01:17:14,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:17:14,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:14,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:14,517 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:14,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 01:17:14,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 01:17:14,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:14,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 01:17:14,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:15,086 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:15,086 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 71 [2023-08-27 01:17:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:15,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:15,727 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:15,728 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 45 [2023-08-27 01:17:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:15,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263570951] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:15,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:15,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 8] total 22 [2023-08-27 01:17:15,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887356756] [2023-08-27 01:17:15,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:15,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 01:17:15,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:15,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 01:17:15,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2023-08-27 01:17:15,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 319 [2023-08-27 01:17:15,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 432 transitions, 4977 flow. Second operand has 24 states, 24 states have (on average 96.33333333333333) internal successors, (2312), 24 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:15,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:15,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 319 [2023-08-27 01:17:15,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:17,551 INFO L124 PetriNetUnfolderBase]: 4941/7198 cut-off events. [2023-08-27 01:17:17,552 INFO L125 PetriNetUnfolderBase]: For 57219/57309 co-relation queries the response was YES. [2023-08-27 01:17:17,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44041 conditions, 7198 events. 4941/7198 cut-off events. For 57219/57309 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 37319 event pairs, 960 based on Foata normal form. 55/6980 useless extension candidates. Maximal degree in co-relation 43968. Up to 6684 conditions per place. [2023-08-27 01:17:17,604 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 393 selfloop transitions, 100 changer transitions 5/510 dead transitions. [2023-08-27 01:17:17,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 510 transitions, 6849 flow [2023-08-27 01:17:17,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 01:17:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 01:17:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1417 transitions. [2023-08-27 01:17:17,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172861621137483 [2023-08-27 01:17:17,606 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1417 transitions. [2023-08-27 01:17:17,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1417 transitions. [2023-08-27 01:17:17,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:17,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1417 transitions. [2023-08-27 01:17:17,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 101.21428571428571) internal successors, (1417), 14 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:17,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 319.0) internal successors, (4785), 15 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:17,612 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 319.0) internal successors, (4785), 15 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:17,612 INFO L175 Difference]: Start difference. First operand has 209 places, 432 transitions, 4977 flow. Second operand 14 states and 1417 transitions. [2023-08-27 01:17:17,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 510 transitions, 6849 flow [2023-08-27 01:17:17,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 510 transitions, 6280 flow, removed 217 selfloop flow, removed 9 redundant places. [2023-08-27 01:17:17,896 INFO L231 Difference]: Finished difference. Result has 220 places, 458 transitions, 5187 flow [2023-08-27 01:17:17,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=4530, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5187, PETRI_PLACES=220, PETRI_TRANSITIONS=458} [2023-08-27 01:17:17,896 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 182 predicate places. [2023-08-27 01:17:17,896 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 458 transitions, 5187 flow [2023-08-27 01:17:17,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 96.33333333333333) internal successors, (2312), 24 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:17,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:17,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:17,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:18,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:18,098 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:18,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:18,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1203504702, now seen corresponding path program 10 times [2023-08-27 01:17:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:18,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705797978] [2023-08-27 01:17:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:18,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:18,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:18,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705797978] [2023-08-27 01:17:18,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705797978] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:18,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29877510] [2023-08-27 01:17:18,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:17:18,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:18,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:18,779 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:18,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 01:17:18,898 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:17:18,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:18,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:17:18,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:19,167 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-08-27 01:17:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:19,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:19,368 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:19,368 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 45 [2023-08-27 01:17:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:19,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29877510] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:19,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:19,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 27 [2023-08-27 01:17:19,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766199454] [2023-08-27 01:17:19,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:19,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 01:17:19,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:19,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 01:17:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2023-08-27 01:17:19,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 319 [2023-08-27 01:17:19,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 458 transitions, 5187 flow. Second operand has 29 states, 29 states have (on average 88.03448275862068) internal successors, (2553), 29 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:19,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:19,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 319 [2023-08-27 01:17:19,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:21,553 INFO L124 PetriNetUnfolderBase]: 5441/7903 cut-off events. [2023-08-27 01:17:21,554 INFO L125 PetriNetUnfolderBase]: For 63921/63921 co-relation queries the response was YES. [2023-08-27 01:17:21,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48272 conditions, 7903 events. 5441/7903 cut-off events. For 63921/63921 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 40801 event pairs, 882 based on Foata normal form. 2/7719 useless extension candidates. Maximal degree in co-relation 48193. Up to 6782 conditions per place. [2023-08-27 01:17:21,614 INFO L140 encePairwiseOnDemand]: 306/319 looper letters, 340 selfloop transitions, 188 changer transitions 4/532 dead transitions. [2023-08-27 01:17:21,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 532 transitions, 6948 flow [2023-08-27 01:17:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 01:17:21,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 01:17:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1316 transitions. [2023-08-27 01:17:21,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2946708463949843 [2023-08-27 01:17:21,616 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1316 transitions. [2023-08-27 01:17:21,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1316 transitions. [2023-08-27 01:17:21,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:21,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1316 transitions. [2023-08-27 01:17:21,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:21,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 319.0) internal successors, (4785), 15 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:21,621 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 319.0) internal successors, (4785), 15 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:21,621 INFO L175 Difference]: Start difference. First operand has 220 places, 458 transitions, 5187 flow. Second operand 14 states and 1316 transitions. [2023-08-27 01:17:21,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 532 transitions, 6948 flow [2023-08-27 01:17:21,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 532 transitions, 6691 flow, removed 97 selfloop flow, removed 5 redundant places. [2023-08-27 01:17:21,845 INFO L231 Difference]: Finished difference. Result has 230 places, 478 transitions, 5658 flow [2023-08-27 01:17:21,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=4932, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5658, PETRI_PLACES=230, PETRI_TRANSITIONS=478} [2023-08-27 01:17:21,846 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 192 predicate places. [2023-08-27 01:17:21,846 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 478 transitions, 5658 flow [2023-08-27 01:17:21,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 88.03448275862068) internal successors, (2553), 29 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:21,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:21,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:21,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:22,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 01:17:22,047 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:22,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:22,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2109634270, now seen corresponding path program 11 times [2023-08-27 01:17:22,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:22,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926182689] [2023-08-27 01:17:22,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:22,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926182689] [2023-08-27 01:17:23,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926182689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393784898] [2023-08-27 01:17:23,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:17:23,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:23,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:23,077 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:23,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 01:17:23,214 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:17:23,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:23,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 01:17:23,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:23,659 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:17:23,662 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:23,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2023-08-27 01:17:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:23,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:23,886 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:23,886 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 45 [2023-08-27 01:17:24,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:24,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393784898] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:24,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:24,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 8] total 25 [2023-08-27 01:17:24,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946711629] [2023-08-27 01:17:24,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:24,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 01:17:24,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:24,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 01:17:24,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-08-27 01:17:24,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 319 [2023-08-27 01:17:24,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 478 transitions, 5658 flow. Second operand has 27 states, 27 states have (on average 88.29629629629629) internal successors, (2384), 27 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:24,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:24,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 319 [2023-08-27 01:17:24,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:26,344 INFO L124 PetriNetUnfolderBase]: 4949/7212 cut-off events. [2023-08-27 01:17:26,344 INFO L125 PetriNetUnfolderBase]: For 59787/59787 co-relation queries the response was YES. [2023-08-27 01:17:26,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45242 conditions, 7212 events. 4949/7212 cut-off events. For 59787/59787 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 36824 event pairs, 983 based on Foata normal form. 24/7050 useless extension candidates. Maximal degree in co-relation 45161. Up to 6359 conditions per place. [2023-08-27 01:17:26,404 INFO L140 encePairwiseOnDemand]: 306/319 looper letters, 410 selfloop transitions, 172 changer transitions 7/589 dead transitions. [2023-08-27 01:17:26,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 589 transitions, 8009 flow [2023-08-27 01:17:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 01:17:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 01:17:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1772 transitions. [2023-08-27 01:17:26,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29236099653522524 [2023-08-27 01:17:26,407 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1772 transitions. [2023-08-27 01:17:26,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1772 transitions. [2023-08-27 01:17:26,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:26,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1772 transitions. [2023-08-27 01:17:26,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 93.26315789473684) internal successors, (1772), 19 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:26,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 319.0) internal successors, (6380), 20 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:26,413 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 319.0) internal successors, (6380), 20 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:26,413 INFO L175 Difference]: Start difference. First operand has 230 places, 478 transitions, 5658 flow. Second operand 19 states and 1772 transitions. [2023-08-27 01:17:26,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 589 transitions, 8009 flow [2023-08-27 01:17:26,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 589 transitions, 7661 flow, removed 59 selfloop flow, removed 11 redundant places. [2023-08-27 01:17:26,717 INFO L231 Difference]: Finished difference. Result has 244 places, 527 transitions, 6525 flow [2023-08-27 01:17:26,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=5140, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6525, PETRI_PLACES=244, PETRI_TRANSITIONS=527} [2023-08-27 01:17:26,718 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 206 predicate places. [2023-08-27 01:17:26,718 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 527 transitions, 6525 flow [2023-08-27 01:17:26,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 88.29629629629629) internal successors, (2384), 27 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:26,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:26,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:26,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:26,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 01:17:26,927 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:26,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash -142521530, now seen corresponding path program 12 times [2023-08-27 01:17:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:26,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327250777] [2023-08-27 01:17:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:26,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:27,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:27,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327250777] [2023-08-27 01:17:27,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327250777] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:27,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562610672] [2023-08-27 01:17:27,540 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:17:27,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:27,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:27,541 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:27,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 01:17:27,685 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:17:27,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:27,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 01:17:27,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:28,056 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:17:28,059 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:28,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2023-08-27 01:17:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:28,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:28,232 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:17:28,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 45 [2023-08-27 01:17:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:28,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562610672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:28,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:28,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 22 [2023-08-27 01:17:28,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784582443] [2023-08-27 01:17:28,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:28,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 01:17:28,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:28,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 01:17:28,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2023-08-27 01:17:28,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 319 [2023-08-27 01:17:28,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 527 transitions, 6525 flow. Second operand has 24 states, 24 states have (on average 102.45833333333333) internal successors, (2459), 24 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:28,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:28,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 319 [2023-08-27 01:17:28,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:29,798 INFO L124 PetriNetUnfolderBase]: 4753/6968 cut-off events. [2023-08-27 01:17:29,798 INFO L125 PetriNetUnfolderBase]: For 57454/57566 co-relation queries the response was YES. [2023-08-27 01:17:29,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44239 conditions, 6968 events. 4753/6968 cut-off events. For 57454/57566 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 36473 event pairs, 972 based on Foata normal form. 81/6807 useless extension candidates. Maximal degree in co-relation 44153. Up to 6534 conditions per place. [2023-08-27 01:17:29,855 INFO L140 encePairwiseOnDemand]: 309/319 looper letters, 417 selfloop transitions, 114 changer transitions 6/552 dead transitions. [2023-08-27 01:17:29,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 552 transitions, 7761 flow [2023-08-27 01:17:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 01:17:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 01:17:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1178 transitions. [2023-08-27 01:17:29,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3357081789683671 [2023-08-27 01:17:29,857 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1178 transitions. [2023-08-27 01:17:29,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1178 transitions. [2023-08-27 01:17:29,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:29,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1178 transitions. [2023-08-27 01:17:29,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 107.0909090909091) internal successors, (1178), 11 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:29,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 319.0) internal successors, (3828), 12 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:29,960 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 319.0) internal successors, (3828), 12 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:29,960 INFO L175 Difference]: Start difference. First operand has 244 places, 527 transitions, 6525 flow. Second operand 11 states and 1178 transitions. [2023-08-27 01:17:29,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 552 transitions, 7761 flow [2023-08-27 01:17:30,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 552 transitions, 7666 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-27 01:17:30,181 INFO L231 Difference]: Finished difference. Result has 249 places, 526 transitions, 6649 flow [2023-08-27 01:17:30,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=6421, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6649, PETRI_PLACES=249, PETRI_TRANSITIONS=526} [2023-08-27 01:17:30,182 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 211 predicate places. [2023-08-27 01:17:30,182 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 526 transitions, 6649 flow [2023-08-27 01:17:30,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 102.45833333333333) internal successors, (2459), 24 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:30,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:30,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:30,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:30,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 01:17:30,388 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:30,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:30,389 INFO L85 PathProgramCache]: Analyzing trace with hash 891669268, now seen corresponding path program 1 times [2023-08-27 01:17:30,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:30,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706277406] [2023-08-27 01:17:30,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:30,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:30,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:30,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706277406] [2023-08-27 01:17:30,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706277406] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:30,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042076545] [2023-08-27 01:17:30,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:30,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:30,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:30,497 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:30,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 01:17:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:30,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:17:30,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:30,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:17:30,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042076545] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:30,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:30,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-27 01:17:30,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643453679] [2023-08-27 01:17:30,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:30,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 01:17:30,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:30,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 01:17:30,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-27 01:17:30,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:17:30,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 526 transitions, 6649 flow. Second operand has 16 states, 16 states have (on average 117.4375) internal successors, (1879), 16 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:30,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:30,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:17:30,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:32,120 INFO L124 PetriNetUnfolderBase]: 4944/7238 cut-off events. [2023-08-27 01:17:32,121 INFO L125 PetriNetUnfolderBase]: For 60887/60952 co-relation queries the response was YES. [2023-08-27 01:17:32,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46148 conditions, 7238 events. 4944/7238 cut-off events. For 60887/60952 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 37885 event pairs, 1418 based on Foata normal form. 77/7103 useless extension candidates. Maximal degree in co-relation 46061. Up to 4498 conditions per place. [2023-08-27 01:17:32,180 INFO L140 encePairwiseOnDemand]: 311/319 looper letters, 532 selfloop transitions, 64 changer transitions 25/640 dead transitions. [2023-08-27 01:17:32,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 640 transitions, 9115 flow [2023-08-27 01:17:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:17:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:17:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1246 transitions. [2023-08-27 01:17:32,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39059561128526643 [2023-08-27 01:17:32,182 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1246 transitions. [2023-08-27 01:17:32,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1246 transitions. [2023-08-27 01:17:32,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:32,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1246 transitions. [2023-08-27 01:17:32,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.6) internal successors, (1246), 10 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:32,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:32,185 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:32,186 INFO L175 Difference]: Start difference. First operand has 249 places, 526 transitions, 6649 flow. Second operand 10 states and 1246 transitions. [2023-08-27 01:17:32,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 640 transitions, 9115 flow [2023-08-27 01:17:32,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 640 transitions, 8860 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-27 01:17:32,401 INFO L231 Difference]: Finished difference. Result has 255 places, 540 transitions, 6859 flow [2023-08-27 01:17:32,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=6423, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6859, PETRI_PLACES=255, PETRI_TRANSITIONS=540} [2023-08-27 01:17:32,402 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 217 predicate places. [2023-08-27 01:17:32,402 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 540 transitions, 6859 flow [2023-08-27 01:17:32,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 117.4375) internal successors, (1879), 16 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:32,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:32,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:32,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:32,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:32,608 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:32,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:32,609 INFO L85 PathProgramCache]: Analyzing trace with hash -6000020, now seen corresponding path program 2 times [2023-08-27 01:17:32,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:32,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411748667] [2023-08-27 01:17:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:32,733 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 01:17:32,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411748667] [2023-08-27 01:17:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411748667] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234767618] [2023-08-27 01:17:32,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:17:32,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:32,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:32,735 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:32,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 01:17:32,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:17:32,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:32,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:17:32,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:32,957 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 01:17:32,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:33,025 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 01:17:33,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234767618] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:33,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:33,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 01:17:33,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767696309] [2023-08-27 01:17:33,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:33,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 01:17:33,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:33,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 01:17:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-08-27 01:17:33,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:17:33,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 540 transitions, 6859 flow. Second operand has 17 states, 17 states have (on average 117.11764705882354) internal successors, (1991), 17 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:33,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:33,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:17:33,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:34,561 INFO L124 PetriNetUnfolderBase]: 5258/7666 cut-off events. [2023-08-27 01:17:34,562 INFO L125 PetriNetUnfolderBase]: For 77486/77546 co-relation queries the response was YES. [2023-08-27 01:17:34,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51694 conditions, 7666 events. 5258/7666 cut-off events. For 77486/77546 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 40250 event pairs, 1426 based on Foata normal form. 77/7521 useless extension candidates. Maximal degree in co-relation 51601. Up to 4498 conditions per place. [2023-08-27 01:17:34,641 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 564 selfloop transitions, 94 changer transitions 15/692 dead transitions. [2023-08-27 01:17:34,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 692 transitions, 10095 flow [2023-08-27 01:17:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:17:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:17:34,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1244 transitions. [2023-08-27 01:17:34,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38996865203761755 [2023-08-27 01:17:34,644 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1244 transitions. [2023-08-27 01:17:34,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1244 transitions. [2023-08-27 01:17:34,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:34,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1244 transitions. [2023-08-27 01:17:34,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.4) internal successors, (1244), 10 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:34,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:34,649 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:34,649 INFO L175 Difference]: Start difference. First operand has 255 places, 540 transitions, 6859 flow. Second operand 10 states and 1244 transitions. [2023-08-27 01:17:34,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 692 transitions, 10095 flow [2023-08-27 01:17:35,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 692 transitions, 10054 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-27 01:17:35,056 INFO L231 Difference]: Finished difference. Result has 261 places, 569 transitions, 7612 flow [2023-08-27 01:17:35,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=6826, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7612, PETRI_PLACES=261, PETRI_TRANSITIONS=569} [2023-08-27 01:17:35,057 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 223 predicate places. [2023-08-27 01:17:35,057 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 569 transitions, 7612 flow [2023-08-27 01:17:35,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 117.11764705882354) internal successors, (1991), 17 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:35,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:35,058 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:35,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:35,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:35,259 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:35,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:35,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1182017199, now seen corresponding path program 13 times [2023-08-27 01:17:35,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:35,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26354567] [2023-08-27 01:17:35,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:35,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:17:35,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:35,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26354567] [2023-08-27 01:17:35,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26354567] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:35,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293957089] [2023-08-27 01:17:35,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:17:35,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:35,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:35,387 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:35,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 01:17:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:35,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 01:17:35,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:17:35,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:17:35,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293957089] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:35,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:35,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-27 01:17:35,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868250133] [2023-08-27 01:17:35,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:35,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 01:17:35,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 01:17:35,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-08-27 01:17:35,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 319 [2023-08-27 01:17:35,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 569 transitions, 7612 flow. Second operand has 15 states, 15 states have (on average 122.53333333333333) internal successors, (1838), 15 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:35,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:35,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 319 [2023-08-27 01:17:35,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:36,930 INFO L124 PetriNetUnfolderBase]: 4582/6806 cut-off events. [2023-08-27 01:17:36,931 INFO L125 PetriNetUnfolderBase]: For 92473/92965 co-relation queries the response was YES. [2023-08-27 01:17:36,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46887 conditions, 6806 events. 4582/6806 cut-off events. For 92473/92965 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 37443 event pairs, 1367 based on Foata normal form. 425/7167 useless extension candidates. Maximal degree in co-relation 46792. Up to 4412 conditions per place. [2023-08-27 01:17:36,999 INFO L140 encePairwiseOnDemand]: 313/319 looper letters, 431 selfloop transitions, 48 changer transitions 86/596 dead transitions. [2023-08-27 01:17:36,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 596 transitions, 8885 flow [2023-08-27 01:17:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:17:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:17:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 896 transitions. [2023-08-27 01:17:37,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012539184952978 [2023-08-27 01:17:37,001 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 896 transitions. [2023-08-27 01:17:37,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 896 transitions. [2023-08-27 01:17:37,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:37,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 896 transitions. [2023-08-27 01:17:37,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:37,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 319.0) internal successors, (2552), 8 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:37,003 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 319.0) internal successors, (2552), 8 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:37,003 INFO L175 Difference]: Start difference. First operand has 261 places, 569 transitions, 7612 flow. Second operand 7 states and 896 transitions. [2023-08-27 01:17:37,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 596 transitions, 8885 flow [2023-08-27 01:17:37,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 596 transitions, 8682 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-08-27 01:17:37,399 INFO L231 Difference]: Finished difference. Result has 264 places, 468 transitions, 5923 flow [2023-08-27 01:17:37,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=7142, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5923, PETRI_PLACES=264, PETRI_TRANSITIONS=468} [2023-08-27 01:17:37,400 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 226 predicate places. [2023-08-27 01:17:37,400 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 468 transitions, 5923 flow [2023-08-27 01:17:37,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 122.53333333333333) internal successors, (1838), 15 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:37,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:37,401 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:37,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-27 01:17:37,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-27 01:17:37,605 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:37,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1959826604, now seen corresponding path program 14 times [2023-08-27 01:17:37,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:37,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338649444] [2023-08-27 01:17:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:37,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:17:37,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:37,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338649444] [2023-08-27 01:17:37,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338649444] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:37,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777312731] [2023-08-27 01:17:37,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:17:37,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:37,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:37,693 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:37,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 01:17:37,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:17:37,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:37,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:17:37,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:17:37,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:17:38,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777312731] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:38,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:38,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-08-27 01:17:38,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585886898] [2023-08-27 01:17:38,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:38,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:17:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:17:38,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:17:38,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 319 [2023-08-27 01:17:38,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 468 transitions, 5923 flow. Second operand has 19 states, 19 states have (on average 113.6842105263158) internal successors, (2160), 19 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:38,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:38,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 319 [2023-08-27 01:17:38,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:39,983 INFO L124 PetriNetUnfolderBase]: 4292/6142 cut-off events. [2023-08-27 01:17:39,983 INFO L125 PetriNetUnfolderBase]: For 90576/90576 co-relation queries the response was YES. [2023-08-27 01:17:40,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44047 conditions, 6142 events. 4292/6142 cut-off events. For 90576/90576 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 29625 event pairs, 1032 based on Foata normal form. 286/6428 useless extension candidates. Maximal degree in co-relation 43949. Up to 2208 conditions per place. [2023-08-27 01:17:40,167 INFO L140 encePairwiseOnDemand]: 307/319 looper letters, 562 selfloop transitions, 258 changer transitions 0/820 dead transitions. [2023-08-27 01:17:40,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 820 transitions, 11621 flow [2023-08-27 01:17:40,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-27 01:17:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-27 01:17:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4489 transitions. [2023-08-27 01:17:40,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37031842930209535 [2023-08-27 01:17:40,184 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4489 transitions. [2023-08-27 01:17:40,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4489 transitions. [2023-08-27 01:17:40,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:40,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4489 transitions. [2023-08-27 01:17:40,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 118.13157894736842) internal successors, (4489), 38 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:40,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 319.0) internal successors, (12441), 39 states have internal predecessors, (12441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:40,200 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 319.0) internal successors, (12441), 39 states have internal predecessors, (12441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:40,200 INFO L175 Difference]: Start difference. First operand has 264 places, 468 transitions, 5923 flow. Second operand 38 states and 4489 transitions. [2023-08-27 01:17:40,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 820 transitions, 11621 flow [2023-08-27 01:17:40,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 820 transitions, 11022 flow, removed 256 selfloop flow, removed 20 redundant places. [2023-08-27 01:17:40,444 INFO L231 Difference]: Finished difference. Result has 292 places, 610 transitions, 8631 flow [2023-08-27 01:17:40,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=5327, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8631, PETRI_PLACES=292, PETRI_TRANSITIONS=610} [2023-08-27 01:17:40,444 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 254 predicate places. [2023-08-27 01:17:40,444 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 610 transitions, 8631 flow [2023-08-27 01:17:40,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 113.6842105263158) internal successors, (2160), 19 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:40,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:40,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:40,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:40,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-08-27 01:17:40,646 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:40,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:40,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1016062388, now seen corresponding path program 3 times [2023-08-27 01:17:40,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:40,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290381514] [2023-08-27 01:17:40,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:40,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:40,748 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 01:17:40,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:40,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290381514] [2023-08-27 01:17:40,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290381514] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:40,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824439845] [2023-08-27 01:17:40,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:17:40,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:40,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:40,749 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:40,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 01:17:40,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:17:40,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:40,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:17:40,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:40,957 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 01:17:40,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:41,027 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 01:17:41,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824439845] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:41,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:41,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 01:17:41,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812710866] [2023-08-27 01:17:41,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:41,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:17:41,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:41,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:17:41,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-08-27 01:17:41,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:17:41,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 610 transitions, 8631 flow. Second operand has 18 states, 18 states have (on average 117.38888888888889) internal successors, (2113), 18 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:41,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:41,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:17:41,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:42,250 INFO L124 PetriNetUnfolderBase]: 4041/5871 cut-off events. [2023-08-27 01:17:42,251 INFO L125 PetriNetUnfolderBase]: For 99411/99471 co-relation queries the response was YES. [2023-08-27 01:17:42,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44207 conditions, 5871 events. 4041/5871 cut-off events. For 99411/99471 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 29234 event pairs, 1188 based on Foata normal form. 120/5980 useless extension candidates. Maximal degree in co-relation 44105. Up to 4248 conditions per place. [2023-08-27 01:17:42,309 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 548 selfloop transitions, 44 changer transitions 55/672 dead transitions. [2023-08-27 01:17:42,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 672 transitions, 10472 flow [2023-08-27 01:17:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:17:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:17:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1235 transitions. [2023-08-27 01:17:42,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871473354231975 [2023-08-27 01:17:42,311 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1235 transitions. [2023-08-27 01:17:42,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1235 transitions. [2023-08-27 01:17:42,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:42,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1235 transitions. [2023-08-27 01:17:42,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.5) internal successors, (1235), 10 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:42,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:42,314 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:42,314 INFO L175 Difference]: Start difference. First operand has 292 places, 610 transitions, 8631 flow. Second operand 10 states and 1235 transitions. [2023-08-27 01:17:42,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 672 transitions, 10472 flow [2023-08-27 01:17:42,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 672 transitions, 9147 flow, removed 445 selfloop flow, removed 14 redundant places. [2023-08-27 01:17:42,886 INFO L231 Difference]: Finished difference. Result has 286 places, 576 transitions, 6912 flow [2023-08-27 01:17:42,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=7152, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6912, PETRI_PLACES=286, PETRI_TRANSITIONS=576} [2023-08-27 01:17:42,887 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 248 predicate places. [2023-08-27 01:17:42,887 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 576 transitions, 6912 flow [2023-08-27 01:17:42,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 117.38888888888889) internal successors, (2113), 18 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:42,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:42,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:42,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:43,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:43,094 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:43,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:43,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2139211032, now seen corresponding path program 4 times [2023-08-27 01:17:43,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:43,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397503707] [2023-08-27 01:17:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:43,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:43,188 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 01:17:43,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:43,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397503707] [2023-08-27 01:17:43,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397503707] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:43,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017229186] [2023-08-27 01:17:43,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:17:43,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:43,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:43,190 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:43,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 01:17:43,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:17:43,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:43,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:17:43,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:43,373 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 01:17:43,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:43,431 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 01:17:43,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017229186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:43,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:43,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 01:17:43,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250348031] [2023-08-27 01:17:43,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:43,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 01:17:43,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:43,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 01:17:43,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-08-27 01:17:43,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:17:43,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 576 transitions, 6912 flow. Second operand has 17 states, 17 states have (on average 117.11764705882354) internal successors, (1991), 17 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:43,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:43,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:17:43,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:44,584 INFO L124 PetriNetUnfolderBase]: 3769/5379 cut-off events. [2023-08-27 01:17:44,584 INFO L125 PetriNetUnfolderBase]: For 73903/73942 co-relation queries the response was YES. [2023-08-27 01:17:44,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37366 conditions, 5379 events. 3769/5379 cut-off events. For 73903/73942 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 25429 event pairs, 1126 based on Foata normal form. 73/5432 useless extension candidates. Maximal degree in co-relation 37270. Up to 4249 conditions per place. [2023-08-27 01:17:44,647 INFO L140 encePairwiseOnDemand]: 309/319 looper letters, 555 selfloop transitions, 40 changer transitions 11/631 dead transitions. [2023-08-27 01:17:44,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 631 transitions, 8531 flow [2023-08-27 01:17:44,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:17:44,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:17:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1230 transitions. [2023-08-27 01:17:44,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38557993730407525 [2023-08-27 01:17:44,650 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1230 transitions. [2023-08-27 01:17:44,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1230 transitions. [2023-08-27 01:17:44,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:44,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1230 transitions. [2023-08-27 01:17:44,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.0) internal successors, (1230), 10 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:44,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:44,654 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:44,654 INFO L175 Difference]: Start difference. First operand has 286 places, 576 transitions, 6912 flow. Second operand 10 states and 1230 transitions. [2023-08-27 01:17:44,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 631 transitions, 8531 flow [2023-08-27 01:17:44,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 631 transitions, 8328 flow, removed 27 selfloop flow, removed 11 redundant places. [2023-08-27 01:17:44,926 INFO L231 Difference]: Finished difference. Result has 282 places, 575 transitions, 6853 flow [2023-08-27 01:17:44,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=6684, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6853, PETRI_PLACES=282, PETRI_TRANSITIONS=575} [2023-08-27 01:17:44,927 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 244 predicate places. [2023-08-27 01:17:44,927 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 575 transitions, 6853 flow [2023-08-27 01:17:44,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 117.11764705882354) internal successors, (1991), 17 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:44,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:44,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:44,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:45,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:45,134 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:45,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:45,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1673876504, now seen corresponding path program 5 times [2023-08-27 01:17:45,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:45,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122375739] [2023-08-27 01:17:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:45,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:45,237 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 01:17:45,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:45,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122375739] [2023-08-27 01:17:45,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122375739] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019116531] [2023-08-27 01:17:45,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:17:45,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:45,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:45,241 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:45,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 01:17:45,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:17:45,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:45,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:17:45,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:45,440 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 01:17:45,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:45,501 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 01:17:45,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019116531] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:45,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:45,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-27 01:17:45,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152083941] [2023-08-27 01:17:45,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:45,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 01:17:45,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 01:17:45,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-27 01:17:45,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:17:45,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 575 transitions, 6853 flow. Second operand has 16 states, 16 states have (on average 117.3125) internal successors, (1877), 16 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:45,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:45,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:17:45,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:46,430 INFO L124 PetriNetUnfolderBase]: 3379/4837 cut-off events. [2023-08-27 01:17:46,430 INFO L125 PetriNetUnfolderBase]: For 63033/63072 co-relation queries the response was YES. [2023-08-27 01:17:46,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33673 conditions, 4837 events. 3379/4837 cut-off events. For 63033/63072 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 22643 event pairs, 1074 based on Foata normal form. 119/4938 useless extension candidates. Maximal degree in co-relation 33586. Up to 4249 conditions per place. [2023-08-27 01:17:46,475 INFO L140 encePairwiseOnDemand]: 312/319 looper letters, 459 selfloop transitions, 3 changer transitions 88/569 dead transitions. [2023-08-27 01:17:46,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 569 transitions, 7674 flow [2023-08-27 01:17:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:17:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:17:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 980 transitions. [2023-08-27 01:17:46,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384012539184953 [2023-08-27 01:17:46,477 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 980 transitions. [2023-08-27 01:17:46,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 980 transitions. [2023-08-27 01:17:46,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:46,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 980 transitions. [2023-08-27 01:17:46,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 122.5) internal successors, (980), 8 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:46,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:46,479 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:46,479 INFO L175 Difference]: Start difference. First operand has 282 places, 575 transitions, 6853 flow. Second operand 8 states and 980 transitions. [2023-08-27 01:17:46,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 569 transitions, 7674 flow [2023-08-27 01:17:46,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 569 transitions, 7519 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-08-27 01:17:46,662 INFO L231 Difference]: Finished difference. Result has 273 places, 481 transitions, 5467 flow [2023-08-27 01:17:46,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=6292, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5467, PETRI_PLACES=273, PETRI_TRANSITIONS=481} [2023-08-27 01:17:46,663 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 235 predicate places. [2023-08-27 01:17:46,663 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 481 transitions, 5467 flow [2023-08-27 01:17:46,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 117.3125) internal successors, (1877), 16 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:46,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:46,663 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:46,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:46,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:46,864 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:46,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:46,864 INFO L85 PathProgramCache]: Analyzing trace with hash -105071339, now seen corresponding path program 15 times [2023-08-27 01:17:46,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:46,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70130360] [2023-08-27 01:17:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:46,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:17:46,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:46,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70130360] [2023-08-27 01:17:46,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70130360] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:46,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78621280] [2023-08-27 01:17:46,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:17:46,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:46,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:46,983 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:47,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 01:17:47,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:17:47,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:47,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:17:47,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:17:47,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:17:47,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78621280] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:47,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:47,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-27 01:17:47,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546749360] [2023-08-27 01:17:47,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:47,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:17:47,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:47,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:17:47,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-08-27 01:17:47,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:17:47,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 481 transitions, 5467 flow. Second operand has 20 states, 20 states have (on average 117.1) internal successors, (2342), 20 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:47,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:47,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:17:47,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:48,688 INFO L124 PetriNetUnfolderBase]: 4748/6471 cut-off events. [2023-08-27 01:17:48,688 INFO L125 PetriNetUnfolderBase]: For 100187/100218 co-relation queries the response was YES. [2023-08-27 01:17:48,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47606 conditions, 6471 events. 4748/6471 cut-off events. For 100187/100218 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 28205 event pairs, 642 based on Foata normal form. 39/6495 useless extension candidates. Maximal degree in co-relation 47524. Up to 2492 conditions per place. [2023-08-27 01:17:48,754 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 542 selfloop transitions, 256 changer transitions 0/817 dead transitions. [2023-08-27 01:17:48,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 817 transitions, 10459 flow [2023-08-27 01:17:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 01:17:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 01:17:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2333 transitions. [2023-08-27 01:17:48,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3849199802012869 [2023-08-27 01:17:48,758 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2333 transitions. [2023-08-27 01:17:48,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2333 transitions. [2023-08-27 01:17:48,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:48,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2333 transitions. [2023-08-27 01:17:48,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 122.78947368421052) internal successors, (2333), 19 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:48,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 319.0) internal successors, (6380), 20 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:48,765 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 319.0) internal successors, (6380), 20 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:48,765 INFO L175 Difference]: Start difference. First operand has 273 places, 481 transitions, 5467 flow. Second operand 19 states and 2333 transitions. [2023-08-27 01:17:48,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 817 transitions, 10459 flow [2023-08-27 01:17:49,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 817 transitions, 9913 flow, removed 85 selfloop flow, removed 14 redundant places. [2023-08-27 01:17:49,313 INFO L231 Difference]: Finished difference. Result has 237 places, 548 transitions, 6960 flow [2023-08-27 01:17:49,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=5136, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6960, PETRI_PLACES=237, PETRI_TRANSITIONS=548} [2023-08-27 01:17:49,313 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 199 predicate places. [2023-08-27 01:17:49,314 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 548 transitions, 6960 flow [2023-08-27 01:17:49,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 117.1) internal successors, (2342), 20 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:49,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:49,314 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:49,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:49,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 01:17:49,520 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:49,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:49,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1932958577, now seen corresponding path program 16 times [2023-08-27 01:17:49,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:49,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890110540] [2023-08-27 01:17:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:49,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:17:49,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:49,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890110540] [2023-08-27 01:17:49,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890110540] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:49,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151506242] [2023-08-27 01:17:49,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:17:49,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:49,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:49,637 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:49,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 01:17:49,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:17:49,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:49,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:17:49,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:17:49,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:17:49,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151506242] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:49,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:49,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-27 01:17:49,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794759932] [2023-08-27 01:17:49,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:49,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:17:49,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:49,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:17:49,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-08-27 01:17:49,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:17:49,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 548 transitions, 6960 flow. Second operand has 18 states, 18 states have (on average 117.22222222222223) internal successors, (2110), 18 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:49,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:49,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:17:49,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:51,053 INFO L124 PetriNetUnfolderBase]: 4865/6661 cut-off events. [2023-08-27 01:17:51,053 INFO L125 PetriNetUnfolderBase]: For 109889/109910 co-relation queries the response was YES. [2023-08-27 01:17:51,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49390 conditions, 6661 events. 4865/6661 cut-off events. For 109889/109910 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 29233 event pairs, 1191 based on Foata normal form. 85/6735 useless extension candidates. Maximal degree in co-relation 49314. Up to 4428 conditions per place. [2023-08-27 01:17:51,129 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 440 selfloop transitions, 143 changer transitions 0/602 dead transitions. [2023-08-27 01:17:51,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 602 transitions, 8737 flow [2023-08-27 01:17:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:17:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:17:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1218 transitions. [2023-08-27 01:17:51,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2023-08-27 01:17:51,131 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1218 transitions. [2023-08-27 01:17:51,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1218 transitions. [2023-08-27 01:17:51,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:51,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1218 transitions. [2023-08-27 01:17:51,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.8) internal successors, (1218), 10 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:51,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:51,135 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:51,135 INFO L175 Difference]: Start difference. First operand has 237 places, 548 transitions, 6960 flow. Second operand 10 states and 1218 transitions. [2023-08-27 01:17:51,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 602 transitions, 8737 flow [2023-08-27 01:17:52,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 602 transitions, 8250 flow, removed 203 selfloop flow, removed 10 redundant places. [2023-08-27 01:17:52,044 INFO L231 Difference]: Finished difference. Result has 231 places, 526 transitions, 6788 flow [2023-08-27 01:17:52,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=6269, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6788, PETRI_PLACES=231, PETRI_TRANSITIONS=526} [2023-08-27 01:17:52,045 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 193 predicate places. [2023-08-27 01:17:52,045 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 526 transitions, 6788 flow [2023-08-27 01:17:52,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 117.22222222222223) internal successors, (2110), 18 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:52,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:52,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:52,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:52,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 01:17:52,246 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:52,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:52,247 INFO L85 PathProgramCache]: Analyzing trace with hash 320055019, now seen corresponding path program 17 times [2023-08-27 01:17:52,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:52,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293485369] [2023-08-27 01:17:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:52,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:17:52,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:52,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293485369] [2023-08-27 01:17:52,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293485369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:52,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305413334] [2023-08-27 01:17:52,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:17:52,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:52,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:52,377 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:52,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-27 01:17:52,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:17:52,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:52,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:17:52,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:17:52,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:17:52,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305413334] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:52,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:52,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2023-08-27 01:17:52,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196881292] [2023-08-27 01:17:52,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:52,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:17:52,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:52,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:17:52,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-08-27 01:17:52,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 319 [2023-08-27 01:17:52,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 526 transitions, 6788 flow. Second operand has 22 states, 22 states have (on average 113.45454545454545) internal successors, (2496), 22 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:52,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:52,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 319 [2023-08-27 01:17:52,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:17:56,409 INFO L124 PetriNetUnfolderBase]: 9663/12961 cut-off events. [2023-08-27 01:17:56,409 INFO L125 PetriNetUnfolderBase]: For 172399/172399 co-relation queries the response was YES. [2023-08-27 01:17:56,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90954 conditions, 12961 events. 9663/12961 cut-off events. For 172399/172399 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 59969 event pairs, 351 based on Foata normal form. 28/12989 useless extension candidates. Maximal degree in co-relation 90880. Up to 5566 conditions per place. [2023-08-27 01:17:56,575 INFO L140 encePairwiseOnDemand]: 307/319 looper letters, 715 selfloop transitions, 837 changer transitions 2/1554 dead transitions. [2023-08-27 01:17:56,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 1554 transitions, 20484 flow [2023-08-27 01:17:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-27 01:17:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-27 01:17:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 7570 transitions. [2023-08-27 01:17:56,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37078761755485895 [2023-08-27 01:17:56,580 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 7570 transitions. [2023-08-27 01:17:56,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 7570 transitions. [2023-08-27 01:17:56,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:17:56,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 7570 transitions. [2023-08-27 01:17:56,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 118.28125) internal successors, (7570), 64 states have internal predecessors, (7570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:56,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 319.0) internal successors, (20735), 65 states have internal predecessors, (20735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:56,606 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 319.0) internal successors, (20735), 65 states have internal predecessors, (20735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:56,606 INFO L175 Difference]: Start difference. First operand has 231 places, 526 transitions, 6788 flow. Second operand 64 states and 7570 transitions. [2023-08-27 01:17:56,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 1554 transitions, 20484 flow [2023-08-27 01:17:58,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1554 transitions, 20111 flow, removed 13 selfloop flow, removed 6 redundant places. [2023-08-27 01:17:58,037 INFO L231 Difference]: Finished difference. Result has 314 places, 1084 transitions, 16639 flow [2023-08-27 01:17:58,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=6619, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=16639, PETRI_PLACES=314, PETRI_TRANSITIONS=1084} [2023-08-27 01:17:58,038 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 276 predicate places. [2023-08-27 01:17:58,038 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 1084 transitions, 16639 flow [2023-08-27 01:17:58,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 113.45454545454545) internal successors, (2496), 22 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:58,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:17:58,039 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:17:58,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-27 01:17:58,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 01:17:58,239 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:17:58,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:17:58,240 INFO L85 PathProgramCache]: Analyzing trace with hash -384021113, now seen corresponding path program 18 times [2023-08-27 01:17:58,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:17:58,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035038755] [2023-08-27 01:17:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:17:58,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:17:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:17:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:17:58,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:17:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035038755] [2023-08-27 01:17:58,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035038755] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:17:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306398816] [2023-08-27 01:17:58,361 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:17:58,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:17:58,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:17:58,362 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:17:58,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-27 01:17:58,495 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:17:58,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:17:58,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:17:58,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:17:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:17:58,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:17:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:17:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306398816] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:17:58,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:17:58,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-27 01:17:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10220978] [2023-08-27 01:17:58,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:17:58,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 01:17:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:17:58,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 01:17:58,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-08-27 01:17:58,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:17:58,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 1084 transitions, 16639 flow. Second operand has 21 states, 21 states have (on average 117.42857142857143) internal successors, (2466), 21 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:17:58,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:17:58,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:17:58,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:18:01,867 INFO L124 PetriNetUnfolderBase]: 9505/12738 cut-off events. [2023-08-27 01:18:01,867 INFO L125 PetriNetUnfolderBase]: For 217373/217403 co-relation queries the response was YES. [2023-08-27 01:18:01,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101490 conditions, 12738 events. 9505/12738 cut-off events. For 217373/217403 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 58748 event pairs, 2190 based on Foata normal form. 47/12760 useless extension candidates. Maximal degree in co-relation 101390. Up to 10654 conditions per place. [2023-08-27 01:18:02,015 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 974 selfloop transitions, 265 changer transitions 0/1274 dead transitions. [2023-08-27 01:18:02,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 1274 transitions, 21389 flow [2023-08-27 01:18:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 01:18:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 01:18:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1584 transitions. [2023-08-27 01:18:02,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819628647214854 [2023-08-27 01:18:02,017 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1584 transitions. [2023-08-27 01:18:02,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1584 transitions. [2023-08-27 01:18:02,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:18:02,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1584 transitions. [2023-08-27 01:18:02,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 121.84615384615384) internal successors, (1584), 13 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:02,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 319.0) internal successors, (4466), 14 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:02,022 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 319.0) internal successors, (4466), 14 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:02,022 INFO L175 Difference]: Start difference. First operand has 314 places, 1084 transitions, 16639 flow. Second operand 13 states and 1584 transitions. [2023-08-27 01:18:02,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 1274 transitions, 21389 flow [2023-08-27 01:18:04,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1274 transitions, 17991 flow, removed 1546 selfloop flow, removed 10 redundant places. [2023-08-27 01:18:04,367 INFO L231 Difference]: Finished difference. Result has 313 places, 1078 transitions, 14465 flow [2023-08-27 01:18:04,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=13935, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14465, PETRI_PLACES=313, PETRI_TRANSITIONS=1078} [2023-08-27 01:18:04,370 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 275 predicate places. [2023-08-27 01:18:04,370 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 1078 transitions, 14465 flow [2023-08-27 01:18:04,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 117.42857142857143) internal successors, (2466), 21 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:04,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:18:04,371 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:18:04,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-27 01:18:04,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-27 01:18:04,577 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:18:04,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:18:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash 417483989, now seen corresponding path program 19 times [2023-08-27 01:18:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:18:04,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802024016] [2023-08-27 01:18:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:18:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:18:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:18:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:18:04,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:18:04,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802024016] [2023-08-27 01:18:04,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802024016] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:18:04,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617650672] [2023-08-27 01:18:04,691 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:18:04,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:18:04,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:18:04,693 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:18:04,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-27 01:18:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:18:04,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:18:04,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:18:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:18:04,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:18:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:18:05,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617650672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:18:05,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:18:05,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 01:18:05,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160257005] [2023-08-27 01:18:05,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:18:05,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:18:05,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:18:05,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:18:05,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:18:05,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:18:05,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 1078 transitions, 14465 flow. Second operand has 19 states, 19 states have (on average 117.05263157894737) internal successors, (2224), 19 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:05,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:18:05,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:18:05,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:18:07,865 INFO L124 PetriNetUnfolderBase]: 9441/12635 cut-off events. [2023-08-27 01:18:07,865 INFO L125 PetriNetUnfolderBase]: For 151799/151829 co-relation queries the response was YES. [2023-08-27 01:18:07,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88546 conditions, 12635 events. 9441/12635 cut-off events. For 151799/151829 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 57959 event pairs, 2252 based on Foata normal form. 59/12667 useless extension candidates. Maximal degree in co-relation 88448. Up to 10970 conditions per place. [2023-08-27 01:18:08,003 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 994 selfloop transitions, 193 changer transitions 0/1221 dead transitions. [2023-08-27 01:18:08,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1221 transitions, 17988 flow [2023-08-27 01:18:08,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:18:08,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:18:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1212 transitions. [2023-08-27 01:18:08,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3799373040752351 [2023-08-27 01:18:08,005 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1212 transitions. [2023-08-27 01:18:08,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1212 transitions. [2023-08-27 01:18:08,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:18:08,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1212 transitions. [2023-08-27 01:18:08,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.2) internal successors, (1212), 10 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:08,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:08,009 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:08,009 INFO L175 Difference]: Start difference. First operand has 313 places, 1078 transitions, 14465 flow. Second operand 10 states and 1212 transitions. [2023-08-27 01:18:08,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 1221 transitions, 17988 flow [2023-08-27 01:18:09,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 1221 transitions, 17476 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-27 01:18:09,485 INFO L231 Difference]: Finished difference. Result has 307 places, 1066 transitions, 14167 flow [2023-08-27 01:18:09,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=13781, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=873, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14167, PETRI_PLACES=307, PETRI_TRANSITIONS=1066} [2023-08-27 01:18:09,486 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 269 predicate places. [2023-08-27 01:18:09,486 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 1066 transitions, 14167 flow [2023-08-27 01:18:09,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 117.05263157894737) internal successors, (2224), 19 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:09,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:18:09,487 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:18:09,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-08-27 01:18:09,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 01:18:09,689 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:18:09,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:18:09,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1538659755, now seen corresponding path program 20 times [2023-08-27 01:18:09,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:18:09,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681754893] [2023-08-27 01:18:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:18:09,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:18:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:18:09,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:18:09,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:18:09,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681754893] [2023-08-27 01:18:09,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681754893] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:18:09,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206017018] [2023-08-27 01:18:09,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:18:09,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:18:09,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:18:09,801 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:18:09,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-27 01:18:09,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:18:09,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:18:09,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:18:09,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:18:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:18:10,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:18:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:18:10,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206017018] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:18:10,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:18:10,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 01:18:10,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344838343] [2023-08-27 01:18:10,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:18:10,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:18:10,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:18:10,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:18:10,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:18:10,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:18:10,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 1066 transitions, 14167 flow. Second operand has 19 states, 19 states have (on average 117.05263157894737) internal successors, (2224), 19 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:10,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:18:10,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:18:10,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:18:12,887 INFO L124 PetriNetUnfolderBase]: 9719/13033 cut-off events. [2023-08-27 01:18:12,887 INFO L125 PetriNetUnfolderBase]: For 155871/155924 co-relation queries the response was YES. [2023-08-27 01:18:12,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89996 conditions, 13033 events. 9719/13033 cut-off events. For 155871/155924 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 60253 event pairs, 1533 based on Foata normal form. 49/13061 useless extension candidates. Maximal degree in co-relation 89898. Up to 6759 conditions per place. [2023-08-27 01:18:13,148 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 770 selfloop transitions, 338 changer transitions 0/1141 dead transitions. [2023-08-27 01:18:13,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1141 transitions, 16923 flow [2023-08-27 01:18:13,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:18:13,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:18:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1217 transitions. [2023-08-27 01:18:13,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3815047021943574 [2023-08-27 01:18:13,154 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1217 transitions. [2023-08-27 01:18:13,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1217 transitions. [2023-08-27 01:18:13,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:18:13,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1217 transitions. [2023-08-27 01:18:13,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:13,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:13,156 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:13,157 INFO L175 Difference]: Start difference. First operand has 307 places, 1066 transitions, 14167 flow. Second operand 10 states and 1217 transitions. [2023-08-27 01:18:13,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1141 transitions, 16923 flow [2023-08-27 01:18:14,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1141 transitions, 16548 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-08-27 01:18:14,485 INFO L231 Difference]: Finished difference. Result has 305 places, 1060 transitions, 14373 flow [2023-08-27 01:18:14,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=13697, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14373, PETRI_PLACES=305, PETRI_TRANSITIONS=1060} [2023-08-27 01:18:14,486 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 267 predicate places. [2023-08-27 01:18:14,486 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 1060 transitions, 14373 flow [2023-08-27 01:18:14,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 117.05263157894737) internal successors, (2224), 19 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:14,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:18:14,487 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:18:14,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-08-27 01:18:14,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:18:14,689 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:18:14,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:18:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1296880429, now seen corresponding path program 21 times [2023-08-27 01:18:14,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:18:14,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451836695] [2023-08-27 01:18:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:18:14,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:18:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:18:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:18:14,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:18:14,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451836695] [2023-08-27 01:18:14,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451836695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:18:14,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637779794] [2023-08-27 01:18:14,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:18:14,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:18:14,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:18:14,874 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:18:14,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-27 01:18:15,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:18:15,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:18:15,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:18:15,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:18:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:18:15,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:18:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:18:15,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637779794] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:18:15,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:18:15,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 01:18:15,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699794815] [2023-08-27 01:18:15,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:18:15,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:18:15,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:18:15,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:18:15,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:18:15,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2023-08-27 01:18:15,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 1060 transitions, 14373 flow. Second operand has 19 states, 19 states have (on average 117.05263157894737) internal successors, (2224), 19 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:15,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:18:15,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2023-08-27 01:18:15,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:18:17,887 INFO L124 PetriNetUnfolderBase]: 9655/12929 cut-off events. [2023-08-27 01:18:17,887 INFO L125 PetriNetUnfolderBase]: For 161920/161961 co-relation queries the response was YES. [2023-08-27 01:18:17,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90182 conditions, 12929 events. 9655/12929 cut-off events. For 161920/161961 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 59372 event pairs, 2320 based on Foata normal form. 59/12957 useless extension candidates. Maximal degree in co-relation 90086. Up to 10646 conditions per place. [2023-08-27 01:18:18,030 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 866 selfloop transitions, 241 changer transitions 0/1140 dead transitions. [2023-08-27 01:18:18,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 1140 transitions, 17321 flow [2023-08-27 01:18:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:18:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:18:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1211 transitions. [2023-08-27 01:18:18,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3796238244514107 [2023-08-27 01:18:18,031 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1211 transitions. [2023-08-27 01:18:18,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1211 transitions. [2023-08-27 01:18:18,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:18:18,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1211 transitions. [2023-08-27 01:18:18,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.1) internal successors, (1211), 10 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:18,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:18,035 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:18,035 INFO L175 Difference]: Start difference. First operand has 305 places, 1060 transitions, 14373 flow. Second operand 10 states and 1211 transitions. [2023-08-27 01:18:18,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 1140 transitions, 17321 flow [2023-08-27 01:18:19,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 1140 transitions, 16660 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 01:18:19,421 INFO L231 Difference]: Finished difference. Result has 307 places, 1069 transitions, 14446 flow [2023-08-27 01:18:19,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=13730, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=819, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14446, PETRI_PLACES=307, PETRI_TRANSITIONS=1069} [2023-08-27 01:18:19,422 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 269 predicate places. [2023-08-27 01:18:19,422 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 1069 transitions, 14446 flow [2023-08-27 01:18:19,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 117.05263157894737) internal successors, (2224), 19 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:18:19,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:18:19,423 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:18:19,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-27 01:18:19,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:18:19,623 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:18:19,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:18:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1977976543, now seen corresponding path program 6 times [2023-08-27 01:18:19,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:18:19,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711061979] [2023-08-27 01:18:19,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:18:19,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:18:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:18:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:18:21,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:18:21,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711061979] [2023-08-27 01:18:21,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711061979] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:18:21,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485892920] [2023-08-27 01:18:21,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:18:21,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:18:21,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:18:21,112 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:18:21,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-27 01:18:21,265 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:18:21,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:18:21,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-27 01:18:21,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:18:21,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:18:21,534 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-27 01:18:21,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:18:21,616 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-27 01:18:22,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:18:22,272 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:18:22,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:18:22,274 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:18:22,278 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:22,279 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 77 [2023-08-27 01:18:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:18:22,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:18:23,481 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4)))) (and (forall ((v_ArrVal_1755 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse0 (select .cse3 c_~A~0.offset)) (.cse2 (select .cse3 .cse4))) (or (<= c_~min2~0 .cse0) (forall ((~M~0 Int)) (let ((.cse1 (select .cse3 (+ c_~A~0.offset (* ~M~0 4))))) (or (<= .cse0 .cse1) (= .cse1 .cse2) (<= c_~N~0 ~M~0) (<= ~M~0 0)))) (<= c_~min1~0 .cse2))))) (forall ((v_ArrVal_1755 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse5 (select .cse7 c_~A~0.offset)) (.cse6 (select .cse7 .cse4))) (or (<= c_~min2~0 .cse5) (= .cse5 .cse6) (forall ((~M~0 Int)) (or (< (select .cse7 (+ c_~A~0.offset (* ~M~0 4))) .cse5) (<= c_~N~0 ~M~0) (<= ~M~0 0))) (<= c_~min1~0 .cse6))))) (forall ((v_ArrVal_1755 (Array Int Int))) (let ((.cse9 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse8 (select .cse9 c_~A~0.offset))) (or (<= c_~min2~0 .cse8) (< (select .cse9 .cse4) c_~min1~0) (forall ((~M~0 Int)) (let ((.cse10 (select .cse9 (+ c_~A~0.offset (* ~M~0 4))))) (or (<= .cse8 .cse10) (<= c_~N~0 ~M~0) (= c_~min1~0 .cse10) (<= ~M~0 0)))))))) (forall ((v_ArrVal_1755 (Array Int Int))) (let ((.cse11 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse12 (select .cse11 .cse4))) (or (forall ((~M~0 Int)) (or (<= c_~N~0 ~M~0) (<= ~M~0 0) (< (select .cse11 (+ c_~A~0.offset (* ~M~0 4))) c_~min2~0))) (= c_~min2~0 .cse12) (< (select .cse11 c_~A~0.offset) c_~min2~0) (<= c_~min1~0 .cse12))))) (forall ((v_ArrVal_1755 (Array Int Int))) (let ((.cse15 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse14 (select .cse15 .cse4))) (or (forall ((~M~0 Int)) (let ((.cse13 (select .cse15 (+ c_~A~0.offset (* ~M~0 4))))) (or (= .cse13 .cse14) (<= c_~N~0 ~M~0) (<= ~M~0 0) (<= c_~min2~0 .cse13)))) (< (select .cse15 c_~A~0.offset) c_~min2~0) (<= c_~min1~0 .cse14))))) (forall ((v_ArrVal_1755 (Array Int Int))) (let ((.cse17 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse16 (select .cse17 c_~A~0.offset))) (or (<= c_~min2~0 .cse16) (< (select .cse17 .cse4) c_~min1~0) (= c_~min1~0 .cse16) (forall ((~M~0 Int)) (or (< (select .cse17 (+ c_~A~0.offset (* ~M~0 4))) .cse16) (<= c_~N~0 ~M~0) (<= ~M~0 0))))))) (forall ((v_ArrVal_1755 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (or (< (select .cse18 .cse4) c_~min1~0) (< (select .cse18 c_~A~0.offset) c_~min2~0) (forall ((~M~0 Int)) (let ((.cse19 (select .cse18 (+ c_~A~0.offset (* ~M~0 4))))) (or (<= c_~N~0 ~M~0) (= c_~min1~0 .cse19) (<= ~M~0 0) (<= c_~min2~0 .cse19))))))) (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_1755 (Array Int Int)) (~M~0 Int)) (let ((.cse20 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (or (< (select .cse20 .cse4) c_~min1~0) (< (select .cse20 c_~A~0.offset) c_~min2~0) (<= c_~N~0 ~M~0) (<= ~M~0 0) (< (select .cse20 (+ c_~A~0.offset (* ~M~0 4))) c_~min2~0))))))) is different from false [2023-08-27 01:18:23,839 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4)))) (and (forall ((v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1754 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1754) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse0 (select .cse2 .cse3)) (.cse1 (select .cse2 c_~A~0.offset))) (or (= .cse0 .cse1) (<= c_~min1~0 .cse0) (forall ((~M~0 Int)) (or (< (select .cse2 (+ c_~A~0.offset (* ~M~0 4))) .cse1) (<= c_~N~0 ~M~0) (<= ~M~0 0))) (<= c_~min2~0 .cse1))))) (forall ((v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1754 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1754) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse4 (select .cse7 .cse3)) (.cse6 (select .cse7 c_~A~0.offset))) (or (forall ((~M~0 Int)) (let ((.cse5 (select .cse7 (+ c_~A~0.offset (* ~M~0 4))))) (or (= .cse4 .cse5) (<= .cse6 .cse5) (<= c_~N~0 ~M~0) (<= ~M~0 0)))) (<= c_~min1~0 .cse4) (<= c_~min2~0 .cse6))))) (forall ((v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1754 (Array Int Int))) (let ((.cse9 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1754) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse8 (select .cse9 .cse3))) (or (= c_~min2~0 .cse8) (< (select .cse9 c_~A~0.offset) c_~min2~0) (forall ((~M~0 Int)) (or (<= c_~N~0 ~M~0) (< (select .cse9 (+ c_~A~0.offset (* ~M~0 4))) c_~min2~0) (<= ~M~0 0))) (<= c_~min1~0 .cse8))))) (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1754 (Array Int Int)) (~M~0 Int)) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1754) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (or (< (select .cse10 c_~A~0.offset) c_~min2~0) (< (select .cse10 .cse3) c_~min1~0) (<= c_~N~0 ~M~0) (< (select .cse10 (+ c_~A~0.offset (* ~M~0 4))) c_~min2~0) (<= ~M~0 0))))) (forall ((v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1754 (Array Int Int))) (let ((.cse13 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1754) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse11 (select .cse13 c_~A~0.offset))) (or (forall ((~M~0 Int)) (let ((.cse12 (select .cse13 (+ c_~A~0.offset (* ~M~0 4))))) (or (<= .cse11 .cse12) (<= c_~N~0 ~M~0) (<= ~M~0 0) (= c_~min1~0 .cse12)))) (< (select .cse13 .cse3) c_~min1~0) (<= c_~min2~0 .cse11))))) (forall ((v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1754 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1754) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse15 (select .cse16 .cse3))) (or (forall ((~M~0 Int)) (let ((.cse14 (select .cse16 (+ c_~A~0.offset (* ~M~0 4))))) (or (<= c_~min2~0 .cse14) (= .cse15 .cse14) (<= c_~N~0 ~M~0) (<= ~M~0 0)))) (< (select .cse16 c_~A~0.offset) c_~min2~0) (<= c_~min1~0 .cse15))))) (forall ((v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1754 (Array Int Int))) (let ((.cse18 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1754) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (let ((.cse17 (select .cse18 c_~A~0.offset))) (or (= c_~min1~0 .cse17) (< (select .cse18 .cse3) c_~min1~0) (forall ((~M~0 Int)) (or (< (select .cse18 (+ c_~A~0.offset (* ~M~0 4))) .cse17) (<= c_~N~0 ~M~0) (<= ~M~0 0))) (<= c_~min2~0 .cse17))))) (forall ((v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1754 (Array Int Int))) (let ((.cse20 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1754) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1755) c_~A~0.base))) (or (forall ((~M~0 Int)) (let ((.cse19 (select .cse20 (+ c_~A~0.offset (* ~M~0 4))))) (or (<= c_~min2~0 .cse19) (<= c_~N~0 ~M~0) (<= ~M~0 0) (= c_~min1~0 .cse19)))) (< (select .cse20 c_~A~0.offset) c_~min2~0) (< (select .cse20 .cse3) c_~min1~0)))))) is different from false [2023-08-27 01:18:24,481 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:24,482 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 3737 treesize of output 3740 [2023-08-27 01:18:24,840 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:24,841 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1883 treesize of output 1890 [2023-08-27 01:18:25,057 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:25,057 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1861 treesize of output 1846 [2023-08-27 01:18:25,279 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:25,280 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1817 treesize of output 1825 [2023-08-27 01:18:25,514 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:25,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1796 treesize of output 1783 [2023-08-27 01:18:25,744 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:25,745 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1754 treesize of output 1731 [2023-08-27 01:18:26,001 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:26,001 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1702 treesize of output 1705 [2023-08-27 01:18:26,208 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:26,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1676 treesize of output 1686 [2023-08-27 01:18:26,392 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:26,392 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1657 treesize of output 1648 [2023-08-27 01:18:26,516 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 01:18:26,582 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:26,582 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1619 treesize of output 1592 [2023-08-27 01:18:26,776 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:26,776 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1563 treesize of output 1564 [2023-08-27 01:18:27,029 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:27,030 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1535 treesize of output 1534 [2023-08-27 01:18:27,266 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:27,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1505 treesize of output 1474 [2023-08-27 01:18:27,509 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:27,510 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1445 treesize of output 1444 [2023-08-27 01:18:27,747 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:27,748 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1415 treesize of output 1429 [2023-08-27 01:18:27,986 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:27,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1400 treesize of output 1406 [2023-08-27 01:18:28,260 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:18:28,261 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1377 treesize of output 1360 Received shutdown request... [2023-08-27 01:29:56,099 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 01:29:56,148 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 01:29:56,206 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 01:29:56,209 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (17 of 18 remaining) [2023-08-27 01:29:56,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-27 01:29:56,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:56,409 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. [2023-08-27 01:29:56,411 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-27 01:29:56,411 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-27 01:29:56,411 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-27 01:29:56,411 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-27 01:29:56,411 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-27 01:29:56,411 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-27 01:29:56,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-27 01:29:56,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-27 01:29:56,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-27 01:29:56,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-08-27 01:29:56,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2023-08-27 01:29:56,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-27 01:29:56,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-27 01:29:56,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-27 01:29:56,413 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-27 01:29:56,413 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-27 01:29:56,413 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-27 01:29:56,413 INFO L445 BasicCegarLoop]: Path program histogram: [21, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:29:56,417 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 01:29:56,417 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 01:29:56,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 01:29:56 BasicIcfg [2023-08-27 01:29:56,420 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 01:29:56,420 INFO L158 Benchmark]: Toolchain (without parser) took 818104.21ms. Allocated memory was 408.9MB in the beginning and 8.4GB in the end (delta: 8.0GB). Free memory was 384.6MB in the beginning and 1.7GB in the end (delta: -1.3GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2023-08-27 01:29:56,421 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 408.9MB. Free memory is still 385.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 01:29:56,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.14ms. Allocated memory is still 408.9MB. Free memory was 384.6MB in the beginning and 373.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 01:29:56,421 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.31ms. Allocated memory is still 408.9MB. Free memory was 373.0MB in the beginning and 371.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 01:29:56,421 INFO L158 Benchmark]: Boogie Preprocessor took 36.67ms. Allocated memory is still 408.9MB. Free memory was 371.5MB in the beginning and 369.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 01:29:56,422 INFO L158 Benchmark]: RCFGBuilder took 592.06ms. Allocated memory is still 408.9MB. Free memory was 369.4MB in the beginning and 347.7MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 01:29:56,426 INFO L158 Benchmark]: TraceAbstraction took 817121.61ms. Allocated memory was 408.9MB in the beginning and 8.4GB in the end (delta: 8.0GB). Free memory was 347.2MB in the beginning and 1.7GB in the end (delta: -1.3GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. [2023-08-27 01:29:56,427 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 408.9MB. Free memory is still 385.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 287.14ms. Allocated memory is still 408.9MB. Free memory was 384.6MB in the beginning and 373.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.31ms. Allocated memory is still 408.9MB. Free memory was 373.0MB in the beginning and 371.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.67ms. Allocated memory is still 408.9MB. Free memory was 371.5MB in the beginning and 369.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 592.06ms. Allocated memory is still 408.9MB. Free memory was 369.4MB in the beginning and 347.7MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 817121.61ms. Allocated memory was 408.9MB in the beginning and 8.4GB in the end (delta: 8.0GB). Free memory was 347.2MB in the beginning and 1.7GB in the end (delta: -1.3GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 149 PlacesBefore, 38 PlacesAfterwards, 151 TransitionsBefore, 32 TransitionsAfterwards, 2430 CoEnabledTransitionPairs, 7 FixpointIterations, 77 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 154 TotalNumberOfCompositions, 2901 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2596, independent: 2570, independent conditional: 0, independent unconditional: 2570, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1355, independent: 1342, independent conditional: 0, independent unconditional: 1342, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2596, independent: 1228, independent conditional: 0, independent unconditional: 1228, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 1355, unknown conditional: 0, unknown unconditional: 1355] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 80, Positive conditional cache size: 0, Positive unconditional cache size: 80, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 120ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 199 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 817.0s, OverallIterations: 43, TraceHistogramMax: 4, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 73.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3518 SdHoareTripleChecker+Valid, 11.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3518 mSDsluCounter, 1235 SdHoareTripleChecker+Invalid, 9.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1074 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19075 IncrementalHoareTripleChecker+Invalid, 19315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 161 mSDtfsCounter, 19075 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1878 GetRequests, 977 SyntacticMatches, 59 SemanticMatches, 842 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7744 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16639occurred in iteration=38, InterpolantAutomatonStates: 508, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 28.4s InterpolantComputationTime, 1488 NumberOfCodeBlocks, 1479 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 2067 ConstructedInterpolants, 22 QuantifiedInterpolants, 21999 SizeOfPredicates, 251 NumberOfNonLiveVariables, 7582 ConjunctsInSsa, 576 ConjunctsInUnsatCore, 110 InterpolantComputations, 12 PerfectInterpolantSequences, 205/437 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown