/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 --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 06:01:42,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 06:01:42,846 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 06:01:42,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 06:01:42,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 06:01:42,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 06:01:42,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 06:01:42,870 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 06:01:42,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 06:01:42,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 06:01:42,871 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 06:01:42,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 06:01:42,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 06:01:42,872 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 06:01:42,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 06:01:42,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 06:01:42,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 06:01:42,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 06:01:42,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 06:01:42,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 06:01:42,874 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 06:01:42,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 06:01:42,879 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 06:01:42,880 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 06:01:42,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 06:01:42,883 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 06:01:42,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 06:01:42,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:01:42,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 06:01:42,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 06:01:42,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 06:01:42,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 06:01:42,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 06:01:42,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 06:01:42,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 06:01:42,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 06:01:43,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 06:01:43,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 06:01:43,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 06:01:43,214 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 06:01:43,214 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 06:01:43,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c [2023-08-27 06:01:44,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 06:01:44,567 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 06:01:44,567 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-symm.wvr.c [2023-08-27 06:01:44,580 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8654eb40/4490c7eb7f074afb9bc00a9d610af1ce/FLAGa955d1246 [2023-08-27 06:01:44,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8654eb40/4490c7eb7f074afb9bc00a9d610af1ce [2023-08-27 06:01:44,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 06:01:44,601 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 06:01:44,605 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 06:01:44,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 06:01:44,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 06:01:44,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56142ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44, skipping insertion in model container [2023-08-27 06:01:44,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,636 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 06:01:44,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:01:44,837 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 06:01:44,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:01:44,892 INFO L206 MainTranslator]: Completed translation [2023-08-27 06:01:44,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44 WrapperNode [2023-08-27 06:01:44,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 06:01:44,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 06:01:44,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 06:01:44,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 06:01:44,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,951 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 246 [2023-08-27 06:01:44,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 06:01:44,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 06:01:44,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 06:01:44,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 06:01:44,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 06:01:44,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 06:01:44,985 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 06:01:44,985 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 06:01:44,986 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (1/1) ... [2023-08-27 06:01:44,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:01:45,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:01:45,022 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 06:01:45,031 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 06:01:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 06:01:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 06:01:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 06:01:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 06:01:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 06:01:45,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 06:01:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 06:01:45,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 06:01:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 06:01:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 06:01:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 06:01:45,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 06:01:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 06:01:45,062 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 06:01:45,178 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 06:01:45,180 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 06:01:45,624 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 06:01:45,639 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 06:01:45,639 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 06:01:45,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:01:45 BoogieIcfgContainer [2023-08-27 06:01:45,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 06:01:45,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 06:01:45,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 06:01:45,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 06:01:45,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:01:44" (1/3) ... [2023-08-27 06:01:45,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c875a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:01:45, skipping insertion in model container [2023-08-27 06:01:45,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:44" (2/3) ... [2023-08-27 06:01:45,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c875a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:01:45, skipping insertion in model container [2023-08-27 06:01:45,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:01:45" (3/3) ... [2023-08-27 06:01:45,648 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2023-08-27 06:01:45,663 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 06:01:45,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-08-27 06:01:45,663 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 06:01:45,780 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 06:01:45,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 302 transitions, 620 flow [2023-08-27 06:01:45,959 INFO L124 PetriNetUnfolderBase]: 25/300 cut-off events. [2023-08-27 06:01:45,960 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 06:01:45,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 300 events. 25/300 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 605 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 190. Up to 3 conditions per place. [2023-08-27 06:01:45,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 302 transitions, 620 flow [2023-08-27 06:01:45,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 291 transitions, 594 flow [2023-08-27 06:01:45,985 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 06:01:45,999 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 291 transitions, 594 flow [2023-08-27 06:01:46,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 291 transitions, 594 flow [2023-08-27 06:01:46,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 291 transitions, 594 flow [2023-08-27 06:01:46,042 INFO L124 PetriNetUnfolderBase]: 25/291 cut-off events. [2023-08-27 06:01:46,043 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 06:01:46,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 291 events. 25/291 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 593 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 190. Up to 3 conditions per place. [2023-08-27 06:01:46,051 INFO L119 LiptonReduction]: Number of co-enabled transitions 13172 [2023-08-27 06:01:58,430 INFO L134 LiptonReduction]: Checked pairs total: 15880 [2023-08-27 06:01:58,431 INFO L136 LiptonReduction]: Total number of compositions: 372 [2023-08-27 06:01:58,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 06:01:58,448 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;@67941789, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 06:01:58,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2023-08-27 06:01:58,450 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 06:01:58,450 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 06:01:58,450 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 06:01:58,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:01:58,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 06:01:58,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:01:58,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:01:58,456 INFO L85 PathProgramCache]: Analyzing trace with hash 39912, now seen corresponding path program 1 times [2023-08-27 06:01:58,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:01:58,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762699324] [2023-08-27 06:01:58,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:01:58,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:01:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:01:58,736 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 06:01:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:01:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762699324] [2023-08-27 06:01:58,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762699324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:01:58,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:01:58,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:01:58,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423105700] [2023-08-27 06:01:58,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:01:58,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:01:58,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:01:58,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:01:58,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:01:58,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 674 [2023-08-27 06:01:58,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:01:58,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:01:58,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 674 [2023-08-27 06:01:58,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:01:59,057 INFO L124 PetriNetUnfolderBase]: 541/910 cut-off events. [2023-08-27 06:01:59,057 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-27 06:01:59,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 910 events. 541/910 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4178 event pairs, 459 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 1728. Up to 908 conditions per place. [2023-08-27 06:01:59,067 INFO L140 encePairwiseOnDemand]: 661/674 looper letters, 42 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2023-08-27 06:01:59,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 200 flow [2023-08-27 06:01:59,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:01:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:01:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 853 transitions. [2023-08-27 06:01:59,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4218595450049456 [2023-08-27 06:01:59,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 853 transitions. [2023-08-27 06:01:59,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 853 transitions. [2023-08-27 06:01:59,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:01:59,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 853 transitions. [2023-08-27 06:01:59,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:01:59,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:01:59,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:01:59,114 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 106 flow. Second operand 3 states and 853 transitions. [2023-08-27 06:01:59,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 200 flow [2023-08-27 06:01:59,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 06:01:59,120 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 134 flow [2023-08-27 06:01:59,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2023-08-27 06:01:59,125 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2023-08-27 06:01:59,125 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 134 flow [2023-08-27 06:01:59,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:01:59,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:01:59,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:01:59,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 06:01:59,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:01:59,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:01:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1240480, now seen corresponding path program 1 times [2023-08-27 06:01:59,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:01:59,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188046203] [2023-08-27 06:01:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:01:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:01:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:01:59,233 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 06:01:59,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:01:59,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188046203] [2023-08-27 06:01:59,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188046203] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:01:59,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299031540] [2023-08-27 06:01:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:01:59,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:01:59,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:01:59,245 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 06:01:59,294 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 06:01:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:01:59,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:01:59,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:01:59,414 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 06:01:59,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:01:59,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299031540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:01:59,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:01:59,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 06:01:59,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034220592] [2023-08-27 06:01:59,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:01:59,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:01:59,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:01:59,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:01:59,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:01:59,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 674 [2023-08-27 06:01:59,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 266.75) internal successors, (1067), 4 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:01:59,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:01:59,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 674 [2023-08-27 06:01:59,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:01:59,596 INFO L124 PetriNetUnfolderBase]: 541/908 cut-off events. [2023-08-27 06:01:59,597 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 06:01:59,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 908 events. 541/908 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4113 event pairs, 459 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 1809. Up to 900 conditions per place. [2023-08-27 06:01:59,602 INFO L140 encePairwiseOnDemand]: 667/674 looper letters, 39 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2023-08-27 06:01:59,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 216 flow [2023-08-27 06:01:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:01:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:01:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1111 transitions. [2023-08-27 06:01:59,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4120919881305638 [2023-08-27 06:01:59,606 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1111 transitions. [2023-08-27 06:01:59,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1111 transitions. [2023-08-27 06:01:59,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:01:59,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1111 transitions. [2023-08-27 06:01:59,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:01:59,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 674.0) internal successors, (3370), 5 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:01:59,616 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 674.0) internal successors, (3370), 5 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:01:59,617 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 134 flow. Second operand 4 states and 1111 transitions. [2023-08-27 06:01:59,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 216 flow [2023-08-27 06:01:59,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:01:59,622 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 128 flow [2023-08-27 06:01:59,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2023-08-27 06:01:59,623 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2023-08-27 06:01:59,623 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 128 flow [2023-08-27 06:01:59,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.75) internal successors, (1067), 4 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:01:59,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:01:59,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:01:59,632 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 06:01:59,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:01:59,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:01:59,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:01:59,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1240503, now seen corresponding path program 1 times [2023-08-27 06:01:59,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:01:59,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849627087] [2023-08-27 06:01:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:01:59,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:01:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:01:59,890 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 06:01:59,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:01:59,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849627087] [2023-08-27 06:01:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849627087] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:01:59,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742640550] [2023-08-27 06:01:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:01:59,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:01:59,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:01:59,892 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 06:01:59,897 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 06:01:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:01:59,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:01:59,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:01:59,998 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 06:01:59,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:02:00,014 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 06:02:00,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742640550] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:02:00,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:02:00,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 06:02:00,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581603129] [2023-08-27 06:02:00,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:02:00,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:02:00,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:02:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:02:00,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 674 [2023-08-27 06:02:00,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 128 flow. Second operand has 7 states, 7 states have (on average 267.14285714285717) internal successors, (1870), 7 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:00,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:00,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 674 [2023-08-27 06:02:00,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:00,239 INFO L124 PetriNetUnfolderBase]: 547/920 cut-off events. [2023-08-27 06:02:00,239 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 06:02:00,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1894 conditions, 920 events. 547/920 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4157 event pairs, 459 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 1809. Up to 909 conditions per place. [2023-08-27 06:02:00,244 INFO L140 encePairwiseOnDemand]: 667/674 looper letters, 40 selfloop transitions, 17 changer transitions 0/57 dead transitions. [2023-08-27 06:02:00,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 302 flow [2023-08-27 06:02:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:02:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:02:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1659 transitions. [2023-08-27 06:02:00,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4102373887240356 [2023-08-27 06:02:00,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1659 transitions. [2023-08-27 06:02:00,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1659 transitions. [2023-08-27 06:02:00,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:00,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1659 transitions. [2023-08-27 06:02:00,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:00,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:00,263 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:00,263 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 128 flow. Second operand 6 states and 1659 transitions. [2023-08-27 06:02:00,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 302 flow [2023-08-27 06:02:00,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:02:00,265 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 244 flow [2023-08-27 06:02:00,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2023-08-27 06:02:00,266 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2023-08-27 06:02:00,266 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 244 flow [2023-08-27 06:02:00,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.14285714285717) internal successors, (1870), 7 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:00,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:00,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 06:02:00,276 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 06:02:00,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-27 06:02:00,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:00,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:00,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1192707456, now seen corresponding path program 1 times [2023-08-27 06:02:00,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:00,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569189630] [2023-08-27 06:02:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:00,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:00,678 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 06:02:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:00,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569189630] [2023-08-27 06:02:00,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569189630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:02:00,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:02:00,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 06:02:00,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810595330] [2023-08-27 06:02:00,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:00,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:02:00,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:00,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:02:00,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:02:00,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 674 [2023-08-27 06:02:00,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:00,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:00,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 674 [2023-08-27 06:02:00,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:01,019 INFO L124 PetriNetUnfolderBase]: 975/1609 cut-off events. [2023-08-27 06:02:01,019 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-27 06:02:01,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 1609 events. 975/1609 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8057 event pairs, 774 based on Foata normal form. 0/715 useless extension candidates. Maximal degree in co-relation 3251. Up to 820 conditions per place. [2023-08-27 06:02:01,028 INFO L140 encePairwiseOnDemand]: 666/674 looper letters, 79 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2023-08-27 06:02:01,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 89 transitions, 490 flow [2023-08-27 06:02:01,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:02:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:02:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1267 transitions. [2023-08-27 06:02:01,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3759643916913947 [2023-08-27 06:02:01,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1267 transitions. [2023-08-27 06:02:01,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1267 transitions. [2023-08-27 06:02:01,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:01,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1267 transitions. [2023-08-27 06:02:01,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 253.4) internal successors, (1267), 5 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:01,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 674.0) internal successors, (4044), 6 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:01,042 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 674.0) internal successors, (4044), 6 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:01,042 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 244 flow. Second operand 5 states and 1267 transitions. [2023-08-27 06:02:01,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 89 transitions, 490 flow [2023-08-27 06:02:01,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 89 transitions, 464 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 06:02:01,050 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 262 flow [2023-08-27 06:02:01,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2023-08-27 06:02:01,052 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2023-08-27 06:02:01,052 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 262 flow [2023-08-27 06:02:01,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:01,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:01,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 06:02:01,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 06:02:01,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:01,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1192707509, now seen corresponding path program 1 times [2023-08-27 06:02:01,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:01,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876898298] [2023-08-27 06:02:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:01,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:01,162 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 06:02:01,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:01,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876898298] [2023-08-27 06:02:01,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876898298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:02:01,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:02:01,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:02:01,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728838395] [2023-08-27 06:02:01,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:01,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:02:01,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:01,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:02:01,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:02:01,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 674 [2023-08-27 06:02:01,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:01,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:01,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 674 [2023-08-27 06:02:01,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:01,595 INFO L124 PetriNetUnfolderBase]: 1796/2954 cut-off events. [2023-08-27 06:02:01,595 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2023-08-27 06:02:01,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6299 conditions, 2954 events. 1796/2954 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 16759 event pairs, 1416 based on Foata normal form. 96/1622 useless extension candidates. Maximal degree in co-relation 6208. Up to 1482 conditions per place. [2023-08-27 06:02:01,611 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 95 selfloop transitions, 7 changer transitions 0/102 dead transitions. [2023-08-27 06:02:01,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 102 transitions, 614 flow [2023-08-27 06:02:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:02:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:02:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1272 transitions. [2023-08-27 06:02:01,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774480712166172 [2023-08-27 06:02:01,615 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1272 transitions. [2023-08-27 06:02:01,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1272 transitions. [2023-08-27 06:02:01,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:01,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1272 transitions. [2023-08-27 06:02:01,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 254.4) internal successors, (1272), 5 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:01,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 674.0) internal successors, (4044), 6 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:01,625 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 674.0) internal successors, (4044), 6 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:01,625 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 262 flow. Second operand 5 states and 1272 transitions. [2023-08-27 06:02:01,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 102 transitions, 614 flow [2023-08-27 06:02:01,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 102 transitions, 609 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 06:02:01,629 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 324 flow [2023-08-27 06:02:01,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2023-08-27 06:02:01,633 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2023-08-27 06:02:01,633 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 324 flow [2023-08-27 06:02:01,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:01,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:01,637 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 06:02:01,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 06:02:01,637 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:01,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1696380417, now seen corresponding path program 2 times [2023-08-27 06:02:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:01,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356622722] [2023-08-27 06:02:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:01,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:01,737 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 06:02:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356622722] [2023-08-27 06:02:01,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356622722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:01,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257371105] [2023-08-27 06:02:01,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:02:01,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:01,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:01,741 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 06:02:01,744 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 06:02:01,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:02:01,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:02:01,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:02:01,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:01,835 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 06:02:01,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:02:01,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257371105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:02:01,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:02:01,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 06:02:01,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050542115] [2023-08-27 06:02:01,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:01,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:02:01,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:02:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 06:02:01,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 674 [2023-08-27 06:02:01,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:01,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:01,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 674 [2023-08-27 06:02:01,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:02,202 INFO L124 PetriNetUnfolderBase]: 1796/2953 cut-off events. [2023-08-27 06:02:02,202 INFO L125 PetriNetUnfolderBase]: For 859/859 co-relation queries the response was YES. [2023-08-27 06:02:02,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6541 conditions, 2953 events. 1796/2953 cut-off events. For 859/859 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 16643 event pairs, 1416 based on Foata normal form. 1/1526 useless extension candidates. Maximal degree in co-relation 6454. Up to 2948 conditions per place. [2023-08-27 06:02:02,219 INFO L140 encePairwiseOnDemand]: 671/674 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-08-27 06:02:02,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 438 flow [2023-08-27 06:02:02,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:02:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:02:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 845 transitions. [2023-08-27 06:02:02,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4179030662710188 [2023-08-27 06:02:02,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 845 transitions. [2023-08-27 06:02:02,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 845 transitions. [2023-08-27 06:02:02,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:02,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 845 transitions. [2023-08-27 06:02:02,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:02,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:02,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:02,228 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 324 flow. Second operand 3 states and 845 transitions. [2023-08-27 06:02:02,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 438 flow [2023-08-27 06:02:02,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 424 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 06:02:02,233 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 312 flow [2023-08-27 06:02:02,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2023-08-27 06:02:02,235 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2023-08-27 06:02:02,235 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 312 flow [2023-08-27 06:02:02,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:02,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:02,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 06:02:02,249 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 06:02:02,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:02,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:02,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:02,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1680504764, now seen corresponding path program 1 times [2023-08-27 06:02:02,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:02,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220390560] [2023-08-27 06:02:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:02,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:02,551 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 06:02:02,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:02,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220390560] [2023-08-27 06:02:02,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220390560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:02,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239929263] [2023-08-27 06:02:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:02,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:02,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:02,554 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 06:02:02,558 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 06:02:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:02,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:02:02,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:02,673 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 06:02:02,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:02:02,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239929263] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:02:02,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:02:02,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 06:02:02,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496578961] [2023-08-27 06:02:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:02,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:02:02,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:02,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:02:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:02:02,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 674 [2023-08-27 06:02:02,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:02,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:02,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 674 [2023-08-27 06:02:02,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:03,000 INFO L124 PetriNetUnfolderBase]: 1513/2516 cut-off events. [2023-08-27 06:02:03,000 INFO L125 PetriNetUnfolderBase]: For 825/825 co-relation queries the response was YES. [2023-08-27 06:02:03,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5418 conditions, 2516 events. 1513/2516 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 13957 event pairs, 1203 based on Foata normal form. 88/1376 useless extension candidates. Maximal degree in co-relation 5330. Up to 2516 conditions per place. [2023-08-27 06:02:03,014 INFO L140 encePairwiseOnDemand]: 670/674 looper letters, 56 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-27 06:02:03,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 396 flow [2023-08-27 06:02:03,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:02:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:02:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2023-08-27 06:02:03,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4085064292779426 [2023-08-27 06:02:03,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2023-08-27 06:02:03,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2023-08-27 06:02:03,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:03,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2023-08-27 06:02:03,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 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 06:02:03,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:03,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:03,022 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 312 flow. Second operand 3 states and 826 transitions. [2023-08-27 06:02:03,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 396 flow [2023-08-27 06:02:03,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 376 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 06:02:03,025 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 264 flow [2023-08-27 06:02:03,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2023-08-27 06:02:03,025 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2023-08-27 06:02:03,026 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 264 flow [2023-08-27 06:02:03,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:03,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:03,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:03,036 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 06:02:03,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:03,232 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:03,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:03,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1032307151, now seen corresponding path program 1 times [2023-08-27 06:02:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:03,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433741772] [2023-08-27 06:02:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:03,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:02:03,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:03,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433741772] [2023-08-27 06:02:03,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433741772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:03,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267123316] [2023-08-27 06:02:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:03,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:03,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:03,314 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 06:02:03,316 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 06:02:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:03,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:02:03,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:03,440 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 06:02:03,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:02:03,479 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 06:02:03,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267123316] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:03,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:02:03,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 10 [2023-08-27 06:02:03,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244494690] [2023-08-27 06:02:03,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:03,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:02:03,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:03,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:02:03,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:02:03,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 674 [2023-08-27 06:02:03,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 239.4) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:03,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:03,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 674 [2023-08-27 06:02:03,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:03,855 INFO L124 PetriNetUnfolderBase]: 1445/2448 cut-off events. [2023-08-27 06:02:03,856 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-08-27 06:02:03,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 2448 events. 1445/2448 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 14270 event pairs, 612 based on Foata normal form. 68/1288 useless extension candidates. Maximal degree in co-relation 5077. Up to 2329 conditions per place. [2023-08-27 06:02:03,869 INFO L140 encePairwiseOnDemand]: 667/674 looper letters, 57 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2023-08-27 06:02:03,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 414 flow [2023-08-27 06:02:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:02:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:02:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1244 transitions. [2023-08-27 06:02:03,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36913946587537094 [2023-08-27 06:02:03,874 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1244 transitions. [2023-08-27 06:02:03,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1244 transitions. [2023-08-27 06:02:03,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:03,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1244 transitions. [2023-08-27 06:02:03,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 248.8) internal successors, (1244), 5 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 06:02:03,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 674.0) internal successors, (4044), 6 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:03,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 674.0) internal successors, (4044), 6 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:03,883 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 264 flow. Second operand 5 states and 1244 transitions. [2023-08-27 06:02:03,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 414 flow [2023-08-27 06:02:03,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:02:03,885 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 281 flow [2023-08-27 06:02:03,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-08-27 06:02:03,886 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2023-08-27 06:02:03,886 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 281 flow [2023-08-27 06:02:03,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 239.4) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:03,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:03,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 06:02:03,895 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 06:02:04,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:04,092 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:04,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1695876867, now seen corresponding path program 1 times [2023-08-27 06:02:04,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:04,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845096638] [2023-08-27 06:02:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:04,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:04,161 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 06:02:04,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:04,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845096638] [2023-08-27 06:02:04,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845096638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:04,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147106383] [2023-08-27 06:02:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:04,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:04,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:04,163 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 06:02:04,166 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 06:02:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:04,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:02:04,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:04,280 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 06:02:04,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:02:04,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147106383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:02:04,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:02:04,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-27 06:02:04,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576449106] [2023-08-27 06:02:04,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:04,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:02:04,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:04,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:02:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:02:04,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 674 [2023-08-27 06:02:04,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 263.5) internal successors, (1054), 4 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:04,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:04,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 674 [2023-08-27 06:02:04,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:04,549 INFO L124 PetriNetUnfolderBase]: 1400/2357 cut-off events. [2023-08-27 06:02:04,550 INFO L125 PetriNetUnfolderBase]: For 248/248 co-relation queries the response was YES. [2023-08-27 06:02:04,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4984 conditions, 2357 events. 1400/2357 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 13186 event pairs, 1140 based on Foata normal form. 20/1177 useless extension candidates. Maximal degree in co-relation 4966. Up to 2351 conditions per place. [2023-08-27 06:02:04,563 INFO L140 encePairwiseOnDemand]: 670/674 looper letters, 48 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-08-27 06:02:04,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 375 flow [2023-08-27 06:02:04,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:02:04,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:02:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1085 transitions. [2023-08-27 06:02:04,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024480712166172 [2023-08-27 06:02:04,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1085 transitions. [2023-08-27 06:02:04,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1085 transitions. [2023-08-27 06:02:04,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:04,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1085 transitions. [2023-08-27 06:02:04,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 271.25) internal successors, (1085), 4 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:04,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 674.0) internal successors, (3370), 5 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:04,573 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 674.0) internal successors, (3370), 5 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:04,574 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 281 flow. Second operand 4 states and 1085 transitions. [2023-08-27 06:02:04,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 375 flow [2023-08-27 06:02:04,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 352 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 06:02:04,576 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 256 flow [2023-08-27 06:02:04,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2023-08-27 06:02:04,577 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2023-08-27 06:02:04,577 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 256 flow [2023-08-27 06:02:04,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 263.5) internal successors, (1054), 4 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:04,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:04,577 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 06:02:04,588 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 06:02:04,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:04,787 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:04,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:04,788 INFO L85 PathProgramCache]: Analyzing trace with hash -555761416, now seen corresponding path program 1 times [2023-08-27 06:02:04,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:04,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115781979] [2023-08-27 06:02:04,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:04,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:04,857 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 06:02:04,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:04,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115781979] [2023-08-27 06:02:04,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115781979] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:04,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486613087] [2023-08-27 06:02:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:04,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:04,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:04,859 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 06:02:04,862 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 06:02:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:04,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 06:02:04,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:05,010 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 06:02:05,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:02:05,053 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 06:02:05,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486613087] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:02:05,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:02:05,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 06:02:05,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646533384] [2023-08-27 06:02:05,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:02:05,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:02:05,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:05,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:02:05,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:02:05,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 674 [2023-08-27 06:02:05,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 256 flow. Second operand has 13 states, 13 states have (on average 267.15384615384613) internal successors, (3473), 13 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:05,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:05,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 674 [2023-08-27 06:02:05,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:05,371 INFO L124 PetriNetUnfolderBase]: 1418/2393 cut-off events. [2023-08-27 06:02:05,371 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2023-08-27 06:02:05,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5127 conditions, 2393 events. 1418/2393 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 13495 event pairs, 1140 based on Foata normal form. 12/1205 useless extension candidates. Maximal degree in co-relation 5111. Up to 2355 conditions per place. [2023-08-27 06:02:05,382 INFO L140 encePairwiseOnDemand]: 668/674 looper letters, 35 selfloop transitions, 43 changer transitions 0/78 dead transitions. [2023-08-27 06:02:05,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 586 flow [2023-08-27 06:02:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 06:02:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 06:02:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3273 transitions. [2023-08-27 06:02:05,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40467359050445106 [2023-08-27 06:02:05,391 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3273 transitions. [2023-08-27 06:02:05,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3273 transitions. [2023-08-27 06:02:05,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:05,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3273 transitions. [2023-08-27 06:02:05,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.75) internal successors, (3273), 12 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:05,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 674.0) internal successors, (8762), 13 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:05,412 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 674.0) internal successors, (8762), 13 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:05,412 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 256 flow. Second operand 12 states and 3273 transitions. [2023-08-27 06:02:05,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 586 flow [2023-08-27 06:02:05,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 78 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:02:05,415 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 557 flow [2023-08-27 06:02:05,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=557, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2023-08-27 06:02:05,416 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2023-08-27 06:02:05,416 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 557 flow [2023-08-27 06:02:05,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 267.15384615384613) internal successors, (3473), 13 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:05,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:05,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:05,427 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 06:02:05,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:05,625 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:05,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash -564243883, now seen corresponding path program 1 times [2023-08-27 06:02:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:05,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849136593] [2023-08-27 06:02:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:05,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:05,660 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 06:02:05,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:05,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849136593] [2023-08-27 06:02:05,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849136593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:02:05,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:02:05,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:02:05,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016802049] [2023-08-27 06:02:05,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:05,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:02:05,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:02:05,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:02:05,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 674 [2023-08-27 06:02:05,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 78 transitions, 557 flow. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 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 06:02:05,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:05,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 674 [2023-08-27 06:02:05,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:06,171 INFO L124 PetriNetUnfolderBase]: 2490/4185 cut-off events. [2023-08-27 06:02:06,172 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2023-08-27 06:02:06,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8866 conditions, 4185 events. 2490/4185 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 26229 event pairs, 1140 based on Foata normal form. 0/2073 useless extension candidates. Maximal degree in co-relation 8844. Up to 2394 conditions per place. [2023-08-27 06:02:06,196 INFO L140 encePairwiseOnDemand]: 670/674 looper letters, 100 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2023-08-27 06:02:06,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 816 flow [2023-08-27 06:02:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:02:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:02:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-08-27 06:02:06,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43570722057368944 [2023-08-27 06:02:06,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-08-27 06:02:06,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-08-27 06:02:06,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:06,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-08-27 06:02:06,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:06,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:06,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:06,204 INFO L175 Difference]: Start difference. First operand has 70 places, 78 transitions, 557 flow. Second operand 3 states and 881 transitions. [2023-08-27 06:02:06,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 816 flow [2023-08-27 06:02:06,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 103 transitions, 688 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-27 06:02:06,208 INFO L231 Difference]: Finished difference. Result has 68 places, 79 transitions, 446 flow [2023-08-27 06:02:06,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=79} [2023-08-27 06:02:06,208 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 19 predicate places. [2023-08-27 06:02:06,209 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 79 transitions, 446 flow [2023-08-27 06:02:06,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 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 06:02:06,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:06,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:06,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 06:02:06,209 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:06,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:06,210 INFO L85 PathProgramCache]: Analyzing trace with hash -311469459, now seen corresponding path program 1 times [2023-08-27 06:02:06,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:06,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260761851] [2023-08-27 06:02:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:06,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:06,242 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 06:02:06,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:06,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260761851] [2023-08-27 06:02:06,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260761851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:02:06,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:02:06,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:02:06,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280992962] [2023-08-27 06:02:06,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:06,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:02:06,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:06,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:02:06,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:02:06,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 674 [2023-08-27 06:02:06,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:06,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:06,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 674 [2023-08-27 06:02:06,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:07,161 INFO L124 PetriNetUnfolderBase]: 4194/7009 cut-off events. [2023-08-27 06:02:07,162 INFO L125 PetriNetUnfolderBase]: For 1113/1113 co-relation queries the response was YES. [2023-08-27 06:02:07,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15211 conditions, 7009 events. 4194/7009 cut-off events. For 1113/1113 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 48483 event pairs, 2060 based on Foata normal form. 0/3545 useless extension candidates. Maximal degree in co-relation 15189. Up to 4186 conditions per place. [2023-08-27 06:02:07,203 INFO L140 encePairwiseOnDemand]: 671/674 looper letters, 103 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-08-27 06:02:07,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 730 flow [2023-08-27 06:02:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:02:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:02:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 879 transitions. [2023-08-27 06:02:07,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43471810089020774 [2023-08-27 06:02:07,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 879 transitions. [2023-08-27 06:02:07,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 879 transitions. [2023-08-27 06:02:07,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:07,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 879 transitions. [2023-08-27 06:02:07,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:07,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:07,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:07,211 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 446 flow. Second operand 3 states and 879 transitions. [2023-08-27 06:02:07,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 730 flow [2023-08-27 06:02:07,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:02:07,215 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 455 flow [2023-08-27 06:02:07,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=455, PETRI_PLACES=70, PETRI_TRANSITIONS=80} [2023-08-27 06:02:07,216 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2023-08-27 06:02:07,217 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 455 flow [2023-08-27 06:02:07,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:07,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:07,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:07,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 06:02:07,217 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:07,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:07,218 INFO L85 PathProgramCache]: Analyzing trace with hash -311469397, now seen corresponding path program 1 times [2023-08-27 06:02:07,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:07,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749269344] [2023-08-27 06:02:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:07,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:07,331 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 06:02:07,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:07,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749269344] [2023-08-27 06:02:07,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749269344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:02:07,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:02:07,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 06:02:07,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169192556] [2023-08-27 06:02:07,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:07,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:02:07,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:07,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:02:07,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:02:07,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 674 [2023-08-27 06:02:07,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 455 flow. Second operand has 5 states, 5 states have (on average 235.6) internal successors, (1178), 5 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 06:02:07,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:07,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 674 [2023-08-27 06:02:07,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:07,954 INFO L124 PetriNetUnfolderBase]: 2540/4335 cut-off events. [2023-08-27 06:02:07,954 INFO L125 PetriNetUnfolderBase]: For 1181/1181 co-relation queries the response was YES. [2023-08-27 06:02:07,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10010 conditions, 4335 events. 2540/4335 cut-off events. For 1181/1181 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 27222 event pairs, 1930 based on Foata normal form. 92/2687 useless extension candidates. Maximal degree in co-relation 9987. Up to 3515 conditions per place. [2023-08-27 06:02:07,980 INFO L140 encePairwiseOnDemand]: 663/674 looper letters, 138 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2023-08-27 06:02:07,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 144 transitions, 1013 flow [2023-08-27 06:02:07,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:02:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:02:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1490 transitions. [2023-08-27 06:02:07,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3684470820969337 [2023-08-27 06:02:07,985 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1490 transitions. [2023-08-27 06:02:07,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1490 transitions. [2023-08-27 06:02:07,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:07,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1490 transitions. [2023-08-27 06:02:07,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.33333333333334) internal successors, (1490), 6 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:07,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:07,994 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:07,994 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 455 flow. Second operand 6 states and 1490 transitions. [2023-08-27 06:02:07,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 144 transitions, 1013 flow [2023-08-27 06:02:07,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 144 transitions, 1010 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:02:08,000 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 485 flow [2023-08-27 06:02:08,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2023-08-27 06:02:08,000 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 27 predicate places. [2023-08-27 06:02:08,001 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 485 flow [2023-08-27 06:02:08,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 235.6) internal successors, (1178), 5 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 06:02:08,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:08,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:08,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 06:02:08,001 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:08,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:08,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1072409253, now seen corresponding path program 1 times [2023-08-27 06:02:08,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:08,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070786094] [2023-08-27 06:02:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:08,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:08,064 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 06:02:08,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:08,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070786094] [2023-08-27 06:02:08,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070786094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:02:08,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:02:08,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 06:02:08,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086155781] [2023-08-27 06:02:08,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:08,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:02:08,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:02:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:02:08,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 674 [2023-08-27 06:02:08,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 485 flow. Second operand has 5 states, 5 states have (on average 235.8) internal successors, (1179), 5 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:08,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:08,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 674 [2023-08-27 06:02:08,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:08,554 INFO L124 PetriNetUnfolderBase]: 2160/3651 cut-off events. [2023-08-27 06:02:08,554 INFO L125 PetriNetUnfolderBase]: For 1284/1284 co-relation queries the response was YES. [2023-08-27 06:02:08,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9333 conditions, 3651 events. 2160/3651 cut-off events. For 1284/1284 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 21887 event pairs, 1814 based on Foata normal form. 0/2287 useless extension candidates. Maximal degree in co-relation 9307. Up to 3515 conditions per place. [2023-08-27 06:02:08,577 INFO L140 encePairwiseOnDemand]: 667/674 looper letters, 112 selfloop transitions, 7 changer transitions 0/119 dead transitions. [2023-08-27 06:02:08,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 119 transitions, 919 flow [2023-08-27 06:02:08,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:02:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:02:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1464 transitions. [2023-08-27 06:02:08,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620178041543027 [2023-08-27 06:02:08,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1464 transitions. [2023-08-27 06:02:08,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1464 transitions. [2023-08-27 06:02:08,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:08,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1464 transitions. [2023-08-27 06:02:08,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:08,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:08,590 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:08,590 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 485 flow. Second operand 6 states and 1464 transitions. [2023-08-27 06:02:08,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 119 transitions, 919 flow [2023-08-27 06:02:08,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 119 transitions, 911 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 06:02:08,596 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 516 flow [2023-08-27 06:02:08,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=516, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2023-08-27 06:02:08,597 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 31 predicate places. [2023-08-27 06:02:08,597 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 516 flow [2023-08-27 06:02:08,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 235.8) internal successors, (1179), 5 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:08,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:08,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:08,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 06:02:08,598 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:08,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:08,598 INFO L85 PathProgramCache]: Analyzing trace with hash -163872157, now seen corresponding path program 1 times [2023-08-27 06:02:08,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:08,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419727985] [2023-08-27 06:02:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:08,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:08,673 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 06:02:08,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:08,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419727985] [2023-08-27 06:02:08,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419727985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:02:08,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:02:08,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 06:02:08,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131282490] [2023-08-27 06:02:08,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:08,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:02:08,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:08,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:02:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:02:08,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 674 [2023-08-27 06:02:08,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 516 flow. Second operand has 5 states, 5 states have (on average 235.8) internal successors, (1179), 5 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:08,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:08,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 674 [2023-08-27 06:02:08,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:09,081 INFO L124 PetriNetUnfolderBase]: 1333/2314 cut-off events. [2023-08-27 06:02:09,081 INFO L125 PetriNetUnfolderBase]: For 1192/1192 co-relation queries the response was YES. [2023-08-27 06:02:09,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6103 conditions, 2314 events. 1333/2314 cut-off events. For 1192/1192 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12905 event pairs, 995 based on Foata normal form. 92/1704 useless extension candidates. Maximal degree in co-relation 6075. Up to 1848 conditions per place. [2023-08-27 06:02:09,095 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 108 selfloop transitions, 17 changer transitions 0/125 dead transitions. [2023-08-27 06:02:09,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 901 flow [2023-08-27 06:02:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:02:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:02:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1251 transitions. [2023-08-27 06:02:09,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712166172106825 [2023-08-27 06:02:09,099 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1251 transitions. [2023-08-27 06:02:09,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1251 transitions. [2023-08-27 06:02:09,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:09,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1251 transitions. [2023-08-27 06:02:09,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.2) internal successors, (1251), 5 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:09,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 674.0) internal successors, (4044), 6 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:09,108 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 674.0) internal successors, (4044), 6 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:09,108 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 516 flow. Second operand 5 states and 1251 transitions. [2023-08-27 06:02:09,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 901 flow [2023-08-27 06:02:09,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 125 transitions, 893 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 06:02:09,115 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 576 flow [2023-08-27 06:02:09,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=576, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-08-27 06:02:09,116 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 34 predicate places. [2023-08-27 06:02:09,116 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 576 flow [2023-08-27 06:02:09,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 235.8) internal successors, (1179), 5 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:09,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:09,117 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:09,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 06:02:09,117 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:09,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:09,117 INFO L85 PathProgramCache]: Analyzing trace with hash -791862109, now seen corresponding path program 1 times [2023-08-27 06:02:09,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:09,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112226250] [2023-08-27 06:02:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:09,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:02:09,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:09,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112226250] [2023-08-27 06:02:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112226250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:02:09,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:02:09,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:02:09,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37127478] [2023-08-27 06:02:09,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:02:09,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:02:09,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:09,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:02:09,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:02:09,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 674 [2023-08-27 06:02:09,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 576 flow. Second operand has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:09,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:09,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 674 [2023-08-27 06:02:09,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:09,488 INFO L124 PetriNetUnfolderBase]: 1143/1972 cut-off events. [2023-08-27 06:02:09,488 INFO L125 PetriNetUnfolderBase]: For 1644/1644 co-relation queries the response was YES. [2023-08-27 06:02:09,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5791 conditions, 1972 events. 1143/1972 cut-off events. For 1644/1644 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10541 event pairs, 933 based on Foata normal form. 8/1358 useless extension candidates. Maximal degree in co-relation 5762. Up to 1848 conditions per place. [2023-08-27 06:02:09,496 INFO L140 encePairwiseOnDemand]: 669/674 looper letters, 84 selfloop transitions, 17 changer transitions 0/101 dead transitions. [2023-08-27 06:02:09,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 101 transitions, 833 flow [2023-08-27 06:02:09,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:02:09,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:02:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1225 transitions. [2023-08-27 06:02:09,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36350148367952523 [2023-08-27 06:02:09,500 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1225 transitions. [2023-08-27 06:02:09,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1225 transitions. [2023-08-27 06:02:09,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:09,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1225 transitions. [2023-08-27 06:02:09,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:09,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 674.0) internal successors, (4044), 6 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:09,508 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 674.0) internal successors, (4044), 6 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:09,508 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 576 flow. Second operand 5 states and 1225 transitions. [2023-08-27 06:02:09,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 101 transitions, 833 flow [2023-08-27 06:02:09,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 101 transitions, 805 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:02:09,515 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 586 flow [2023-08-27 06:02:09,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2023-08-27 06:02:09,516 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 37 predicate places. [2023-08-27 06:02:09,516 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 586 flow [2023-08-27 06:02:09,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:09,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:09,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:09,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 06:02:09,517 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:09,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:09,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1492926289, now seen corresponding path program 1 times [2023-08-27 06:02:09,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:09,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260983486] [2023-08-27 06:02:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:09,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:09,931 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 06:02:09,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:09,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260983486] [2023-08-27 06:02:09,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260983486] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:09,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402686771] [2023-08-27 06:02:09,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:09,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:09,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:09,937 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 06:02:09,941 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 06:02:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:10,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 06:02:10,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:10,123 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:02:10,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:10,158 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:02:10,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:10,188 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:02:10,205 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 06:02:10,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:02:12,524 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_393 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_393))) (let ((.cse1 (select (select .cse0 ~a1~0.base) ~a1~0.offset))) (or (<= (select (select .cse0 c_~a2~0.base) c_~a2~0.offset) (+ .cse1 2147483647)) (< .cse1 0) (< 0 .cse1))))) (forall ((v_ArrVal_393 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_393))) (let ((.cse2 (select (select .cse3 ~a1~0.base) ~a1~0.offset))) (or (<= .cse2 0) (<= (select (select .cse3 c_~a2~0.base) c_~a2~0.offset) (+ .cse2 2147483647)) (< 9223372039002259455 .cse2)))))) is different from false [2023-08-27 06:02:12,589 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_393 (Array Int Int)) (v_ArrVal_392 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_392) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_393))) (let ((.cse0 (select (select .cse1 ~a1~0.base) ~a1~0.offset))) (or (< .cse0 0) (< 0 .cse0) (<= (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ .cse0 2147483647)))))) (forall ((v_ArrVal_393 (Array Int Int)) (v_ArrVal_392 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_392) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_393))) (let ((.cse2 (select (select .cse3 ~a1~0.base) ~a1~0.offset))) (or (<= .cse2 0) (< 9223372039002259455 .cse2) (<= (select (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ .cse2 2147483647))))))) is different from false [2023-08-27 06:02:12,614 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:12,614 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 118 [2023-08-27 06:02:12,670 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:12,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1157 treesize of output 1108 [2023-08-27 06:02:12,726 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:12,727 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 745 treesize of output 734 [2023-08-27 06:02:12,767 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:12,767 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 725 treesize of output 694 [2023-08-27 06:02:12,808 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:12,809 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 685 treesize of output 654 [2023-08-27 06:02:12,853 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:12,854 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 645 treesize of output 634 [2023-08-27 06:02:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-27 06:02:23,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402686771] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:02:23,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:02:23,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 06:02:23,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154912522] [2023-08-27 06:02:23,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:02:23,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:02:23,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:23,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:02:23,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=170, Unknown=3, NotChecked=54, Total=272 [2023-08-27 06:02:23,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:02:23,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 586 flow. Second operand has 17 states, 17 states have (on average 232.47058823529412) internal successors, (3952), 17 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:23,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:23,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:02:23,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:23,922 INFO L124 PetriNetUnfolderBase]: 1072/1855 cut-off events. [2023-08-27 06:02:23,922 INFO L125 PetriNetUnfolderBase]: For 1659/1659 co-relation queries the response was YES. [2023-08-27 06:02:23,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5522 conditions, 1855 events. 1072/1855 cut-off events. For 1659/1659 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10107 event pairs, 504 based on Foata normal form. 0/1299 useless extension candidates. Maximal degree in co-relation 5492. Up to 952 conditions per place. [2023-08-27 06:02:23,933 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 106 selfloop transitions, 30 changer transitions 0/136 dead transitions. [2023-08-27 06:02:23,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 136 transitions, 1023 flow [2023-08-27 06:02:23,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:02:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:02:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1939 transitions. [2023-08-27 06:02:23,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359606824925816 [2023-08-27 06:02:23,938 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1939 transitions. [2023-08-27 06:02:23,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1939 transitions. [2023-08-27 06:02:23,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:23,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1939 transitions. [2023-08-27 06:02:23,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 242.375) internal successors, (1939), 8 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:23,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:23,948 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:23,948 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 586 flow. Second operand 8 states and 1939 transitions. [2023-08-27 06:02:23,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 136 transitions, 1023 flow [2023-08-27 06:02:23,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 136 transitions, 979 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 06:02:23,956 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 629 flow [2023-08-27 06:02:23,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=629, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-08-27 06:02:23,957 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 43 predicate places. [2023-08-27 06:02:23,957 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 629 flow [2023-08-27 06:02:23,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 232.47058823529412) internal successors, (3952), 17 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:23,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:23,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:23,965 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 06:02:24,164 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,SelfDestructingSolverStorable16 [2023-08-27 06:02:24,165 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:24,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1492926287, now seen corresponding path program 1 times [2023-08-27 06:02:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:24,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953795963] [2023-08-27 06:02:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:02:24,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:24,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953795963] [2023-08-27 06:02:24,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953795963] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:24,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207388301] [2023-08-27 06:02:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:24,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:24,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:24,605 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 06:02:24,613 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 06:02:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:24,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 06:02:24,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:24,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:24,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:24,737 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 06:02:24,737 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 06:02:24,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:02:24,807 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:02:24,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:02:24,836 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:02:24,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:24,866 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:02:24,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:24,898 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:02:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:02:24,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:02:25,061 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:25,061 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 06:02:25,071 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:25,072 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 555 treesize of output 539 [2023-08-27 06:02:25,081 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 61 treesize of output 57 [2023-08-27 06:02:25,087 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 57 treesize of output 55 [2023-08-27 06:02:25,094 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-27 06:02:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:02:25,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207388301] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:02:25,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:02:25,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-27 06:02:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533969928] [2023-08-27 06:02:25,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:02:25,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:02:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:25,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:02:25,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=326, Unknown=8, NotChecked=0, Total=420 [2023-08-27 06:02:25,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 674 [2023-08-27 06:02:25,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 629 flow. Second operand has 21 states, 21 states have (on average 230.28571428571428) internal successors, (4836), 21 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:25,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:25,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 674 [2023-08-27 06:02:25,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:25,791 INFO L124 PetriNetUnfolderBase]: 1001/1738 cut-off events. [2023-08-27 06:02:25,791 INFO L125 PetriNetUnfolderBase]: For 2569/2569 co-relation queries the response was YES. [2023-08-27 06:02:25,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5580 conditions, 1738 events. 1001/1738 cut-off events. For 2569/2569 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9438 event pairs, 374 based on Foata normal form. 0/1386 useless extension candidates. Maximal degree in co-relation 5548. Up to 731 conditions per place. [2023-08-27 06:02:25,800 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 137 selfloop transitions, 19 changer transitions 0/156 dead transitions. [2023-08-27 06:02:25,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 156 transitions, 1267 flow [2023-08-27 06:02:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:02:25,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:02:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1694 transitions. [2023-08-27 06:02:25,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3590504451038576 [2023-08-27 06:02:25,805 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1694 transitions. [2023-08-27 06:02:25,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1694 transitions. [2023-08-27 06:02:25,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:25,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1694 transitions. [2023-08-27 06:02:25,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:25,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:25,813 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:25,813 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 629 flow. Second operand 7 states and 1694 transitions. [2023-08-27 06:02:25,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 156 transitions, 1267 flow [2023-08-27 06:02:25,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 156 transitions, 1204 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 06:02:25,822 INFO L231 Difference]: Finished difference. Result has 95 places, 87 transitions, 643 flow [2023-08-27 06:02:25,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=643, PETRI_PLACES=95, PETRI_TRANSITIONS=87} [2023-08-27 06:02:25,822 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 46 predicate places. [2023-08-27 06:02:25,823 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 87 transitions, 643 flow [2023-08-27 06:02:25,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 230.28571428571428) internal successors, (4836), 21 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:25,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:25,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:25,832 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 06:02:26,030 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,SelfDestructingSolverStorable17 [2023-08-27 06:02:26,030 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:26,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:26,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1492926290, now seen corresponding path program 1 times [2023-08-27 06:02:26,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:26,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320737917] [2023-08-27 06:02:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:26,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:26,393 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 06:02:26,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:26,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320737917] [2023-08-27 06:02:26,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320737917] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:26,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852630602] [2023-08-27 06:02:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:26,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:26,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:26,397 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 06:02:26,423 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 06:02:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:26,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 06:02:26,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:26,554 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:02:26,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:26,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:02:26,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:26,614 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:02:26,625 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 06:02:26,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:02:26,655 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_481 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_481) c_~a2~0.base) c_~a2~0.offset)))) is different from false [2023-08-27 06:02:26,689 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:26,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 06:02:26,697 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:26,697 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 69 [2023-08-27 06:02:26,701 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 56 treesize of output 52 [2023-08-27 06:02:26,705 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 26 treesize of output 24 [2023-08-27 06:02:26,769 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 06:02:26,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852630602] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:02:26,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:02:26,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 06:02:26,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856048976] [2023-08-27 06:02:26,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:02:26,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:02:26,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:26,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:02:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=196, Unknown=1, NotChecked=28, Total=272 [2023-08-27 06:02:26,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:02:26,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 87 transitions, 643 flow. Second operand has 17 states, 17 states have (on average 232.47058823529412) internal successors, (3952), 17 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:26,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:26,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:02:26,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:27,367 INFO L124 PetriNetUnfolderBase]: 930/1621 cut-off events. [2023-08-27 06:02:27,367 INFO L125 PetriNetUnfolderBase]: For 3481/3481 co-relation queries the response was YES. [2023-08-27 06:02:27,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5614 conditions, 1621 events. 930/1621 cut-off events. For 3481/3481 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8489 event pairs, 482 based on Foata normal form. 46/1381 useless extension candidates. Maximal degree in co-relation 5581. Up to 930 conditions per place. [2023-08-27 06:02:27,374 INFO L140 encePairwiseOnDemand]: 663/674 looper letters, 104 selfloop transitions, 33 changer transitions 0/137 dead transitions. [2023-08-27 06:02:27,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 137 transitions, 1076 flow [2023-08-27 06:02:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:02:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:02:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2170 transitions. [2023-08-27 06:02:27,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577316188592153 [2023-08-27 06:02:27,379 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2170 transitions. [2023-08-27 06:02:27,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2170 transitions. [2023-08-27 06:02:27,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:27,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2170 transitions. [2023-08-27 06:02:27,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 241.11111111111111) internal successors, (2170), 9 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:27,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 674.0) internal successors, (6740), 10 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:27,389 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 674.0) internal successors, (6740), 10 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:27,389 INFO L175 Difference]: Start difference. First operand has 95 places, 87 transitions, 643 flow. Second operand 9 states and 2170 transitions. [2023-08-27 06:02:27,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 137 transitions, 1076 flow [2023-08-27 06:02:27,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 137 transitions, 1044 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 06:02:27,398 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 708 flow [2023-08-27 06:02:27,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=708, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2023-08-27 06:02:27,398 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 50 predicate places. [2023-08-27 06:02:27,398 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 708 flow [2023-08-27 06:02:27,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 232.47058823529412) internal successors, (3952), 17 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:27,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:27,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:27,406 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 06:02:27,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:27,606 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:27,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:27,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1492926317, now seen corresponding path program 1 times [2023-08-27 06:02:27,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:27,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039216651] [2023-08-27 06:02:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:27,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:02:27,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:27,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039216651] [2023-08-27 06:02:27,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039216651] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:27,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144807068] [2023-08-27 06:02:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:27,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:27,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:27,925 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 06:02:27,928 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 06:02:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:28,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 06:02:28,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:28,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:28,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:28,058 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 06:02:28,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 06:02:28,082 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:02:28,117 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:02:28,118 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:02:28,147 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:02:28,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:28,174 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:02:28,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:28,203 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:02:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:02:28,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:02:28,331 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:28,331 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-08-27 06:02:28,341 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:28,342 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 977 treesize of output 945 [2023-08-27 06:02:28,351 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 53 treesize of output 51 [2023-08-27 06:02:28,357 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 51 treesize of output 47 [2023-08-27 06:02:28,362 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 06:02:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:02:28,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144807068] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:02:28,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:02:28,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-27 06:02:28,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320148580] [2023-08-27 06:02:28,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:02:28,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:02:28,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:28,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:02:28,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=318, Unknown=16, NotChecked=0, Total=420 [2023-08-27 06:02:28,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 674 [2023-08-27 06:02:28,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 708 flow. Second operand has 21 states, 21 states have (on average 230.28571428571428) internal successors, (4836), 21 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:28,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:28,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 674 [2023-08-27 06:02:28,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:28,952 INFO L124 PetriNetUnfolderBase]: 859/1504 cut-off events. [2023-08-27 06:02:28,952 INFO L125 PetriNetUnfolderBase]: For 3300/3300 co-relation queries the response was YES. [2023-08-27 06:02:28,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5200 conditions, 1504 events. 859/1504 cut-off events. For 3300/3300 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7844 event pairs, 356 based on Foata normal form. 46/1284 useless extension candidates. Maximal degree in co-relation 5169. Up to 731 conditions per place. [2023-08-27 06:02:28,959 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 139 selfloop transitions, 19 changer transitions 0/158 dead transitions. [2023-08-27 06:02:28,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 158 transitions, 1357 flow [2023-08-27 06:02:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:02:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:02:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1692 transitions. [2023-08-27 06:02:28,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586265366680797 [2023-08-27 06:02:28,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1692 transitions. [2023-08-27 06:02:28,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1692 transitions. [2023-08-27 06:02:28,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:28,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1692 transitions. [2023-08-27 06:02:28,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 241.71428571428572) internal successors, (1692), 7 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:28,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:28,968 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:28,968 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 708 flow. Second operand 7 states and 1692 transitions. [2023-08-27 06:02:28,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 158 transitions, 1357 flow [2023-08-27 06:02:28,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 158 transitions, 1280 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-27 06:02:28,979 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 671 flow [2023-08-27 06:02:28,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=671, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2023-08-27 06:02:28,979 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 51 predicate places. [2023-08-27 06:02:28,979 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 671 flow [2023-08-27 06:02:28,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 230.28571428571428) internal successors, (4836), 21 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:28,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:28,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:28,991 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 06:02:29,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:29,186 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:29,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:29,186 INFO L85 PathProgramCache]: Analyzing trace with hash 963925287, now seen corresponding path program 1 times [2023-08-27 06:02:29,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:29,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89657641] [2023-08-27 06:02:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:29,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:29,273 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 06:02:29,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:29,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89657641] [2023-08-27 06:02:29,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89657641] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:29,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356074469] [2023-08-27 06:02:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:29,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:29,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:29,275 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 06:02:29,277 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 06:02:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:29,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:02:29,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:02:29,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:02:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:02:29,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356074469] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:02:29,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:02:29,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2023-08-27 06:02:29,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276979365] [2023-08-27 06:02:29,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:02:29,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:02:29,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:29,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:02:29,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:02:29,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:02:29,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 671 flow. Second operand has 16 states, 16 states have (on average 232.75) internal successors, (3724), 16 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:29,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:29,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:02:29,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:30,408 INFO L124 PetriNetUnfolderBase]: 1981/3547 cut-off events. [2023-08-27 06:02:30,409 INFO L125 PetriNetUnfolderBase]: For 8140/8140 co-relation queries the response was YES. [2023-08-27 06:02:30,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11205 conditions, 3547 events. 1981/3547 cut-off events. For 8140/8140 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 22638 event pairs, 803 based on Foata normal form. 690/3611 useless extension candidates. Maximal degree in co-relation 11175. Up to 1297 conditions per place. [2023-08-27 06:02:30,426 INFO L140 encePairwiseOnDemand]: 661/674 looper letters, 267 selfloop transitions, 46 changer transitions 0/313 dead transitions. [2023-08-27 06:02:30,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 313 transitions, 2278 flow [2023-08-27 06:02:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 06:02:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 06:02:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5098 transitions. [2023-08-27 06:02:30,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601808675992652 [2023-08-27 06:02:30,431 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5098 transitions. [2023-08-27 06:02:30,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5098 transitions. [2023-08-27 06:02:30,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:30,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5098 transitions. [2023-08-27 06:02:30,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 242.76190476190476) internal successors, (5098), 21 states have internal predecessors, (5098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:30,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 674.0) internal successors, (14828), 22 states have internal predecessors, (14828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:30,444 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 674.0) internal successors, (14828), 22 states have internal predecessors, (14828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:30,444 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 671 flow. Second operand 21 states and 5098 transitions. [2023-08-27 06:02:30,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 313 transitions, 2278 flow [2023-08-27 06:02:30,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 313 transitions, 2240 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-27 06:02:30,460 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 1023 flow [2023-08-27 06:02:30,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1023, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2023-08-27 06:02:30,461 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 70 predicate places. [2023-08-27 06:02:30,461 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 1023 flow [2023-08-27 06:02:30,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 232.75) internal successors, (3724), 16 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:30,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:30,461 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:30,466 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 06:02:30,663 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,SelfDestructingSolverStorable20 [2023-08-27 06:02:30,664 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:30,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:30,664 INFO L85 PathProgramCache]: Analyzing trace with hash 957132759, now seen corresponding path program 1 times [2023-08-27 06:02:30,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:30,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478179010] [2023-08-27 06:02:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:30,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:02:30,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:30,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478179010] [2023-08-27 06:02:30,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478179010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:30,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545838352] [2023-08-27 06:02:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:30,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:30,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:30,741 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 06:02:30,766 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 06:02:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:30,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:02:30,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:30,924 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 06:02:30,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:02:30,988 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 06:02:30,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545838352] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:02:30,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:02:30,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-08-27 06:02:30,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575471271] [2023-08-27 06:02:30,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:02:30,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:02:30,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:30,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:02:30,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:02:30,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:02:30,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 1023 flow. Second operand has 16 states, 16 states have (on average 232.75) internal successors, (3724), 16 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:30,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:30,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:02:30,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:31,790 INFO L124 PetriNetUnfolderBase]: 1504/2746 cut-off events. [2023-08-27 06:02:31,790 INFO L125 PetriNetUnfolderBase]: For 9918/9918 co-relation queries the response was YES. [2023-08-27 06:02:31,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9765 conditions, 2746 events. 1504/2746 cut-off events. For 9918/9918 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16537 event pairs, 787 based on Foata normal form. 36/2372 useless extension candidates. Maximal degree in co-relation 9732. Up to 1297 conditions per place. [2023-08-27 06:02:31,801 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 192 selfloop transitions, 51 changer transitions 0/243 dead transitions. [2023-08-27 06:02:31,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 243 transitions, 2109 flow [2023-08-27 06:02:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 06:02:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 06:02:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5023 transitions. [2023-08-27 06:02:31,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35488201215204185 [2023-08-27 06:02:31,805 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5023 transitions. [2023-08-27 06:02:31,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5023 transitions. [2023-08-27 06:02:31,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:31,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5023 transitions. [2023-08-27 06:02:31,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 239.1904761904762) internal successors, (5023), 21 states have internal predecessors, (5023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:31,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 674.0) internal successors, (14828), 22 states have internal predecessors, (14828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:31,821 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 674.0) internal successors, (14828), 22 states have internal predecessors, (14828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:31,821 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 1023 flow. Second operand 21 states and 5023 transitions. [2023-08-27 06:02:31,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 243 transitions, 2109 flow [2023-08-27 06:02:31,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 243 transitions, 2045 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-27 06:02:31,850 INFO L231 Difference]: Finished difference. Result has 136 places, 122 transitions, 1179 flow [2023-08-27 06:02:31,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1179, PETRI_PLACES=136, PETRI_TRANSITIONS=122} [2023-08-27 06:02:31,850 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 87 predicate places. [2023-08-27 06:02:31,850 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 122 transitions, 1179 flow [2023-08-27 06:02:31,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 232.75) internal successors, (3724), 16 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:31,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:31,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:31,859 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 06:02:32,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 06:02:32,056 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:32,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:32,057 INFO L85 PathProgramCache]: Analyzing trace with hash 956898612, now seen corresponding path program 1 times [2023-08-27 06:02:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:32,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296805614] [2023-08-27 06:02:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:32,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:02:32,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:32,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296805614] [2023-08-27 06:02:32,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296805614] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:32,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678123905] [2023-08-27 06:02:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:32,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:32,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:32,353 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 06:02:32,356 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 06:02:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:32,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 06:02:32,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:32,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:32,486 INFO L322 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-08-27 06:02:32,487 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2023-08-27 06:02:32,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:02:32,544 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:02:32,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:02:32,569 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:02:32,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:32,594 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:02:32,612 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 15 treesize of output 7 [2023-08-27 06:02:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:02:32,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:02:32,665 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_640 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_640) c_~a1~0.base) c_~a1~0.offset) 2147483648)) is different from false [2023-08-27 06:02:32,725 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:32,725 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-08-27 06:02:32,732 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:32,733 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-08-27 06:02:32,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-08-27 06:02:32,742 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-27 06:02:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 06:02:32,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678123905] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:02:32,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:02:32,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 06:02:32,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136673298] [2023-08-27 06:02:32,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:02:32,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:02:32,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:02:32,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:02:32,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=277, Unknown=6, NotChecked=34, Total=380 [2023-08-27 06:02:32,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 674 [2023-08-27 06:02:32,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 122 transitions, 1179 flow. Second operand has 20 states, 20 states have (on average 229.4) internal successors, (4588), 20 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:32,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:02:32,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 674 [2023-08-27 06:02:32,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:02:33,514 INFO L124 PetriNetUnfolderBase]: 1792/3246 cut-off events. [2023-08-27 06:02:33,514 INFO L125 PetriNetUnfolderBase]: For 11888/11888 co-relation queries the response was YES. [2023-08-27 06:02:33,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11760 conditions, 3246 events. 1792/3246 cut-off events. For 11888/11888 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 20284 event pairs, 1033 based on Foata normal form. 0/2670 useless extension candidates. Maximal degree in co-relation 11725. Up to 2464 conditions per place. [2023-08-27 06:02:33,527 INFO L140 encePairwiseOnDemand]: 664/674 looper letters, 180 selfloop transitions, 33 changer transitions 0/213 dead transitions. [2023-08-27 06:02:33,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 213 transitions, 2343 flow [2023-08-27 06:02:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:02:33,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:02:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2373 transitions. [2023-08-27 06:02:33,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3520771513353116 [2023-08-27 06:02:33,529 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2373 transitions. [2023-08-27 06:02:33,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2373 transitions. [2023-08-27 06:02:33,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:02:33,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2373 transitions. [2023-08-27 06:02:33,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 237.3) internal successors, (2373), 10 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:33,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 674.0) internal successors, (7414), 11 states have internal predecessors, (7414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:33,537 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 674.0) internal successors, (7414), 11 states have internal predecessors, (7414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:33,537 INFO L175 Difference]: Start difference. First operand has 136 places, 122 transitions, 1179 flow. Second operand 10 states and 2373 transitions. [2023-08-27 06:02:33,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 213 transitions, 2343 flow [2023-08-27 06:02:33,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 213 transitions, 2273 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-27 06:02:33,583 INFO L231 Difference]: Finished difference. Result has 142 places, 138 transitions, 1350 flow [2023-08-27 06:02:33,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1350, PETRI_PLACES=142, PETRI_TRANSITIONS=138} [2023-08-27 06:02:33,583 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 93 predicate places. [2023-08-27 06:02:33,583 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 138 transitions, 1350 flow [2023-08-27 06:02:33,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 229.4) internal successors, (4588), 20 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:02:33,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:02:33,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:02:33,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-27 06:02:33,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:33,790 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:02:33,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:02:33,791 INFO L85 PathProgramCache]: Analyzing trace with hash 956898611, now seen corresponding path program 1 times [2023-08-27 06:02:33,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:02:33,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451858735] [2023-08-27 06:02:33,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:33,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:02:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:02:34,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:02:34,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451858735] [2023-08-27 06:02:34,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451858735] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:02:34,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949094370] [2023-08-27 06:02:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:02:34,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:02:34,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:02:34,111 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 06:02:34,114 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 06:02:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:02:34,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 06:02:34,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:02:34,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:34,250 INFO L322 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-08-27 06:02:34,250 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2023-08-27 06:02:34,274 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:02:34,300 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:02:34,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:02:34,320 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:02:34,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:02:34,340 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:02:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:02:34,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:02:34,635 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_681 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_681))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (< 0 .cse0) (< .cse0 0) (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) c_~a1~0.offset))))))) (forall ((~a2~0.offset Int) (v_ArrVal_681 (Array Int Int)) (~a2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_681))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (< (+ 4294967295 .cse2) 0) (<= 0 .cse2) (< .cse2 (+ 2147483649 (select (select .cse3 c_~a1~0.base) c_~a1~0.offset)))))))) is different from false [2023-08-27 06:02:34,658 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_681 (Array Int Int)) (v_ArrVal_680 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_680) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_681))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) c_~a1~0.offset))) (< (+ .cse0 4294967295) 0) (<= 0 .cse0))))) (forall ((~a2~0.offset Int) (v_ArrVal_681 (Array Int Int)) (v_ArrVal_680 (Array Int Int)) (~a2~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_680) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_681))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (< .cse2 (+ 2147483649 (select (select .cse3 c_~a1~0.base) c_~a1~0.offset))) (< 0 .cse2) (< .cse2 0)))))) is different from false [2023-08-27 06:02:34,755 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:34,755 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 132 [2023-08-27 06:02:34,814 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:34,814 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 859 treesize of output 842 [2023-08-27 06:02:34,846 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:34,847 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 765 treesize of output 734 [2023-08-27 06:02:34,879 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:34,879 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 725 treesize of output 714 [2023-08-27 06:02:34,913 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:34,913 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 705 treesize of output 674 [2023-08-27 06:02:34,947 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:02:34,947 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 665 treesize of output 654 [2023-08-27 06:04:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 06:04:36,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949094370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:04:36,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:04:36,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-27 06:04:36,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59806392] [2023-08-27 06:04:36,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:04:36,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:04:36,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:04:36,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:04:36,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=283, Unknown=2, NotChecked=70, Total=420 [2023-08-27 06:04:36,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 674 [2023-08-27 06:04:36,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 138 transitions, 1350 flow. Second operand has 21 states, 21 states have (on average 229.38095238095238) internal successors, (4817), 21 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:36,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:04:36,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 674 [2023-08-27 06:04:36,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:04:37,388 INFO L124 PetriNetUnfolderBase]: 1725/3142 cut-off events. [2023-08-27 06:04:37,388 INFO L125 PetriNetUnfolderBase]: For 12609/12609 co-relation queries the response was YES. [2023-08-27 06:04:37,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12294 conditions, 3142 events. 1725/3142 cut-off events. For 12609/12609 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 19514 event pairs, 1015 based on Foata normal form. 58/2892 useless extension candidates. Maximal degree in co-relation 12253. Up to 2496 conditions per place. [2023-08-27 06:04:37,405 INFO L140 encePairwiseOnDemand]: 664/674 looper letters, 178 selfloop transitions, 34 changer transitions 0/212 dead transitions. [2023-08-27 06:04:37,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 212 transitions, 2425 flow [2023-08-27 06:04:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:04:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:04:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2371 transitions. [2023-08-27 06:04:37,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35178041543026706 [2023-08-27 06:04:37,409 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2371 transitions. [2023-08-27 06:04:37,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2371 transitions. [2023-08-27 06:04:37,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:04:37,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2371 transitions. [2023-08-27 06:04:37,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 237.1) internal successors, (2371), 10 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:37,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 674.0) internal successors, (7414), 11 states have internal predecessors, (7414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:37,417 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 674.0) internal successors, (7414), 11 states have internal predecessors, (7414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:37,417 INFO L175 Difference]: Start difference. First operand has 142 places, 138 transitions, 1350 flow. Second operand 10 states and 2371 transitions. [2023-08-27 06:04:37,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 212 transitions, 2425 flow [2023-08-27 06:04:37,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 212 transitions, 2391 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 06:04:37,471 INFO L231 Difference]: Finished difference. Result has 148 places, 139 transitions, 1392 flow [2023-08-27 06:04:37,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1392, PETRI_PLACES=148, PETRI_TRANSITIONS=139} [2023-08-27 06:04:37,472 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 99 predicate places. [2023-08-27 06:04:37,472 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 139 transitions, 1392 flow [2023-08-27 06:04:37,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 229.38095238095238) internal successors, (4817), 21 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:37,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:04:37,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:04:37,479 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 06:04:37,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:37,679 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:04:37,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:04:37,679 INFO L85 PathProgramCache]: Analyzing trace with hash 956898550, now seen corresponding path program 1 times [2023-08-27 06:04:37,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:04:37,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493704756] [2023-08-27 06:04:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:37,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:04:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:37,871 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 06:04:37,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:04:37,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493704756] [2023-08-27 06:04:37,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493704756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:04:37,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759873405] [2023-08-27 06:04:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:37,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:37,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:04:37,877 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 06:04:37,880 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 06:04:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:37,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 06:04:37,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:04:38,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:04:38,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:38,038 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:04:38,056 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 06:04:38,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:04:38,097 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:38,097 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-08-27 06:04:38,102 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:38,103 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-08-27 06:04:38,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-27 06:04:38,136 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 06:04:38,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759873405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:04:38,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:04:38,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 06:04:38,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170405357] [2023-08-27 06:04:38,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:04:38,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 06:04:38,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:04:38,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 06:04:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2023-08-27 06:04:38,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 674 [2023-08-27 06:04:38,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 1392 flow. Second operand has 14 states, 14 states have (on average 234.78571428571428) internal successors, (3287), 14 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:38,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:04:38,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 674 [2023-08-27 06:04:38,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:04:38,897 INFO L124 PetriNetUnfolderBase]: 1853/3528 cut-off events. [2023-08-27 06:04:38,898 INFO L125 PetriNetUnfolderBase]: For 16058/16058 co-relation queries the response was YES. [2023-08-27 06:04:38,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13964 conditions, 3528 events. 1853/3528 cut-off events. For 16058/16058 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 23481 event pairs, 1088 based on Foata normal form. 0/3286 useless extension candidates. Maximal degree in co-relation 13923. Up to 2331 conditions per place. [2023-08-27 06:04:38,917 INFO L140 encePairwiseOnDemand]: 661/674 looper letters, 113 selfloop transitions, 66 changer transitions 0/179 dead transitions. [2023-08-27 06:04:38,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 179 transitions, 2036 flow [2023-08-27 06:04:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:04:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:04:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2175 transitions. [2023-08-27 06:04:38,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35855588526211674 [2023-08-27 06:04:38,920 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2175 transitions. [2023-08-27 06:04:38,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2175 transitions. [2023-08-27 06:04:38,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:04:38,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2175 transitions. [2023-08-27 06:04:38,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 241.66666666666666) internal successors, (2175), 9 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:38,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 674.0) internal successors, (6740), 10 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:38,925 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 674.0) internal successors, (6740), 10 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:38,925 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 1392 flow. Second operand 9 states and 2175 transitions. [2023-08-27 06:04:38,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 179 transitions, 2036 flow [2023-08-27 06:04:38,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 179 transitions, 2001 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-27 06:04:38,960 INFO L231 Difference]: Finished difference. Result has 152 places, 146 transitions, 1553 flow [2023-08-27 06:04:38,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1553, PETRI_PLACES=152, PETRI_TRANSITIONS=146} [2023-08-27 06:04:38,961 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 103 predicate places. [2023-08-27 06:04:38,961 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 146 transitions, 1553 flow [2023-08-27 06:04:38,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 234.78571428571428) internal successors, (3287), 14 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:38,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:04:38,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:04:38,968 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 06:04:39,167 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,SelfDestructingSolverStorable24 [2023-08-27 06:04:39,168 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:04:39,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:04:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash 956898576, now seen corresponding path program 1 times [2023-08-27 06:04:39,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:04:39,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948767712] [2023-08-27 06:04:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:39,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:04:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:39,368 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 06:04:39,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:04:39,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948767712] [2023-08-27 06:04:39,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948767712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:04:39,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935475907] [2023-08-27 06:04:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:39,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:39,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:04:39,370 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 06:04:39,373 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 06:04:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:39,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 06:04:39,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:04:39,527 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:04:39,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:39,548 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:39,569 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 06:04:39,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:04:39,619 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:39,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-27 06:04:39,625 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:39,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-08-27 06:04:39,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-27 06:04:39,652 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 06:04:39,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935475907] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:04:39,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:04:39,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 06:04:39,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926857607] [2023-08-27 06:04:39,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:04:39,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 06:04:39,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:04:39,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 06:04:39,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:04:39,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 674 [2023-08-27 06:04:39,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 146 transitions, 1553 flow. Second operand has 14 states, 14 states have (on average 234.78571428571428) internal successors, (3287), 14 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:39,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:04:39,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 674 [2023-08-27 06:04:39,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:04:40,329 INFO L124 PetriNetUnfolderBase]: 1840/3478 cut-off events. [2023-08-27 06:04:40,329 INFO L125 PetriNetUnfolderBase]: For 16885/16885 co-relation queries the response was YES. [2023-08-27 06:04:40,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14461 conditions, 3478 events. 1840/3478 cut-off events. For 16885/16885 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 22816 event pairs, 1046 based on Foata normal form. 4/3370 useless extension candidates. Maximal degree in co-relation 14418. Up to 2285 conditions per place. [2023-08-27 06:04:40,348 INFO L140 encePairwiseOnDemand]: 661/674 looper letters, 112 selfloop transitions, 68 changer transitions 0/180 dead transitions. [2023-08-27 06:04:40,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 180 transitions, 2178 flow [2023-08-27 06:04:40,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:04:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:04:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2174 transitions. [2023-08-27 06:04:40,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35839103198153643 [2023-08-27 06:04:40,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2174 transitions. [2023-08-27 06:04:40,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2174 transitions. [2023-08-27 06:04:40,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:04:40,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2174 transitions. [2023-08-27 06:04:40,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 241.55555555555554) internal successors, (2174), 9 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:40,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 674.0) internal successors, (6740), 10 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:40,358 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 674.0) internal successors, (6740), 10 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:40,358 INFO L175 Difference]: Start difference. First operand has 152 places, 146 transitions, 1553 flow. Second operand 9 states and 2174 transitions. [2023-08-27 06:04:40,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 180 transitions, 2178 flow [2023-08-27 06:04:40,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 180 transitions, 2104 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-27 06:04:40,397 INFO L231 Difference]: Finished difference. Result has 156 places, 148 transitions, 1637 flow [2023-08-27 06:04:40,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1637, PETRI_PLACES=156, PETRI_TRANSITIONS=148} [2023-08-27 06:04:40,397 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 107 predicate places. [2023-08-27 06:04:40,397 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 148 transitions, 1637 flow [2023-08-27 06:04:40,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 234.78571428571428) internal successors, (3287), 14 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:40,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:04:40,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:04:40,406 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 06:04:40,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 06:04:40,604 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:04:40,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:04:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -400821853, now seen corresponding path program 1 times [2023-08-27 06:04:40,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:04:40,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312441879] [2023-08-27 06:04:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:40,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:04:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:04:40,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:04:40,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312441879] [2023-08-27 06:04:40,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312441879] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:04:40,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776769787] [2023-08-27 06:04:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:40,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:40,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:04:40,953 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 06:04:40,973 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 06:04:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:41,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 06:04:41,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:04:41,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:41,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:41,105 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 06:04:41,105 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 06:04:41,138 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:04:41,171 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:04:41,172 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:04:41,205 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:41,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:41,241 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:41,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:41,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:41,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:04:41,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:04:41,477 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (* |c_thread1Thread1of1ForFork1_~i~0#1| 4))) (let ((.cse2 (+ .cse3 c_~a1~0.offset))) (and (forall ((v_ArrVal_801 (Array Int Int)) (~a2~0.offset Int) (~a2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_801))) (let ((.cse0 (select (select .cse1 ~a2~0.base) (+ .cse3 ~a2~0.offset)))) (or (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) .cse2))) (< (+ .cse0 4294967295) 0) (<= 0 .cse0))))) (forall ((v_ArrVal_801 (Array Int Int)) (~a2~0.offset Int) (~a2~0.base Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_801))) (let ((.cse4 (select (select .cse5 ~a2~0.base) (+ .cse3 ~a2~0.offset)))) (or (< 0 .cse4) (< .cse4 0) (< .cse4 (+ 2147483649 (select (select .cse5 c_~a1~0.base) .cse2)))))))))) is different from false [2023-08-27 06:04:41,521 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_801 (Array Int Int)) (~a2~0.offset Int) (~a2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_801))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (<= 0 .cse0) (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) c_~a1~0.offset))) (< (+ .cse0 4294967295) 0))))) (forall ((v_ArrVal_801 (Array Int Int)) (~a2~0.offset Int) (~a2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_801))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (< 0 .cse2) (< .cse2 (+ 2147483649 (select (select .cse3 c_~a1~0.base) c_~a1~0.offset))) (< .cse2 0)))))) is different from false [2023-08-27 06:04:41,553 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_801 (Array Int Int)) (~a2~0.offset Int) (v_ArrVal_800 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_800) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_801))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (< .cse0 0) (< 0 .cse0) (< .cse0 (+ (select (select .cse1 c_~a1~0.base) c_~a1~0.offset) 2147483649)))))) (forall ((v_ArrVal_801 (Array Int Int)) (~a2~0.offset Int) (v_ArrVal_800 (Array Int Int)) (~a2~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_800) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_801))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (<= 0 .cse2) (< .cse2 (+ (select (select .cse3 c_~a1~0.base) c_~a1~0.offset) 2147483649)) (< (+ .cse2 4294967295) 0)))))) is different from false [2023-08-27 06:04:41,719 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:41,720 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 239 treesize of output 156 [2023-08-27 06:04:41,788 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:41,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46419 treesize of output 44130 [2023-08-27 06:04:41,958 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:41,959 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2805 treesize of output 2778 [2023-08-27 06:04:42,036 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:42,037 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2769 treesize of output 2634 [2023-08-27 06:04:42,116 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:42,117 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2625 treesize of output 2562 [2023-08-27 06:04:42,195 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:42,196 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2553 treesize of output 2526 [2023-08-27 06:04:42,276 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:42,276 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2517 treesize of output 2454 [2023-08-27 06:04:42,350 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:42,351 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2445 treesize of output 2310 [2023-08-27 06:04:48,972 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 06:04:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 06:04:49,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776769787] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:04:49,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:04:49,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 06:04:49,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052287983] [2023-08-27 06:04:49,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:04:49,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 06:04:49,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:04:49,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 06:04:49,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=381, Unknown=14, NotChecked=126, Total=600 [2023-08-27 06:04:49,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 674 [2023-08-27 06:04:49,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 148 transitions, 1637 flow. Second operand has 25 states, 25 states have (on average 228.44) internal successors, (5711), 25 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:49,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:04:49,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 674 [2023-08-27 06:04:49,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:04:50,053 INFO L124 PetriNetUnfolderBase]: 1767/3351 cut-off events. [2023-08-27 06:04:50,054 INFO L125 PetriNetUnfolderBase]: For 16877/16877 co-relation queries the response was YES. [2023-08-27 06:04:50,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14231 conditions, 3351 events. 1767/3351 cut-off events. For 16877/16877 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 22074 event pairs, 765 based on Foata normal form. 54/3295 useless extension candidates. Maximal degree in co-relation 14189. Up to 1214 conditions per place. [2023-08-27 06:04:50,071 INFO L140 encePairwiseOnDemand]: 664/674 looper letters, 214 selfloop transitions, 42 changer transitions 0/256 dead transitions. [2023-08-27 06:04:50,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 256 transitions, 3160 flow [2023-08-27 06:04:50,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:04:50,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:04:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2155 transitions. [2023-08-27 06:04:50,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35525881965051104 [2023-08-27 06:04:50,075 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2155 transitions. [2023-08-27 06:04:50,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2155 transitions. [2023-08-27 06:04:50,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:04:50,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2155 transitions. [2023-08-27 06:04:50,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 239.44444444444446) internal successors, (2155), 9 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:50,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 674.0) internal successors, (6740), 10 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:50,081 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 674.0) internal successors, (6740), 10 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:50,082 INFO L175 Difference]: Start difference. First operand has 156 places, 148 transitions, 1637 flow. Second operand 9 states and 2155 transitions. [2023-08-27 06:04:50,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 256 transitions, 3160 flow [2023-08-27 06:04:50,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 256 transitions, 3080 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 06:04:50,114 INFO L231 Difference]: Finished difference. Result has 163 places, 151 transitions, 1744 flow [2023-08-27 06:04:50,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1744, PETRI_PLACES=163, PETRI_TRANSITIONS=151} [2023-08-27 06:04:50,115 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 114 predicate places. [2023-08-27 06:04:50,115 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 151 transitions, 1744 flow [2023-08-27 06:04:50,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 228.44) internal successors, (5711), 25 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:50,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:04:50,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:04:50,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-27 06:04:50,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 06:04:50,317 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:04:50,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:04:50,317 INFO L85 PathProgramCache]: Analyzing trace with hash 62159118, now seen corresponding path program 1 times [2023-08-27 06:04:50,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:04:50,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603735317] [2023-08-27 06:04:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:50,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:04:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:04:50,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:04:50,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603735317] [2023-08-27 06:04:50,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603735317] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:04:50,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900880983] [2023-08-27 06:04:50,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:50,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:50,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:04:50,661 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 06:04:50,689 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 06:04:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:50,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 06:04:50,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:04:50,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:50,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:50,819 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 06:04:50,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 06:04:50,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:04:50,885 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:04:50,885 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:04:50,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:04:50,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:50,944 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:04:50,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:50,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:04:50,996 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 15 treesize of output 7 [2023-08-27 06:04:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:04:51,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:04:51,090 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_845 (Array Int Int)) (v_ArrVal_847 (Array Int Int)) (v_ArrVal_846 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_845) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_846) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_847) c_~a1~0.base) c_~a1~0.offset) 2147483648)) is different from false [2023-08-27 06:04:51,120 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:51,120 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-08-27 06:04:51,127 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:51,127 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 245 treesize of output 237 [2023-08-27 06:04:51,133 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 53 treesize of output 49 [2023-08-27 06:04:51,137 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 49 treesize of output 47 [2023-08-27 06:04:51,142 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 06:04:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 06:04:51,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900880983] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:04:51,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:04:51,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-27 06:04:51,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352094249] [2023-08-27 06:04:51,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:04:51,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 06:04:51,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:04:51,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 06:04:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=365, Unknown=13, NotChecked=40, Total=506 [2023-08-27 06:04:51,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 674 [2023-08-27 06:04:51,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 151 transitions, 1744 flow. Second operand has 23 states, 23 states have (on average 228.3913043478261) internal successors, (5253), 23 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:51,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:04:51,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 674 [2023-08-27 06:04:51,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:04:52,017 INFO L124 PetriNetUnfolderBase]: 1694/3224 cut-off events. [2023-08-27 06:04:52,017 INFO L125 PetriNetUnfolderBase]: For 18546/18546 co-relation queries the response was YES. [2023-08-27 06:04:52,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14273 conditions, 3224 events. 1694/3224 cut-off events. For 18546/18546 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 21128 event pairs, 743 based on Foata normal form. 54/3170 useless extension candidates. Maximal degree in co-relation 14228. Up to 1182 conditions per place. [2023-08-27 06:04:52,036 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 196 selfloop transitions, 40 changer transitions 0/236 dead transitions. [2023-08-27 06:04:52,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 236 transitions, 2991 flow [2023-08-27 06:04:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:04:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:04:52,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1914 transitions. [2023-08-27 06:04:52,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35497032640949555 [2023-08-27 06:04:52,038 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1914 transitions. [2023-08-27 06:04:52,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1914 transitions. [2023-08-27 06:04:52,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:04:52,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1914 transitions. [2023-08-27 06:04:52,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 239.25) internal successors, (1914), 8 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 06:04:52,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:52,045 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:52,045 INFO L175 Difference]: Start difference. First operand has 163 places, 151 transitions, 1744 flow. Second operand 8 states and 1914 transitions. [2023-08-27 06:04:52,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 236 transitions, 2991 flow [2023-08-27 06:04:52,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 236 transitions, 2895 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-27 06:04:52,094 INFO L231 Difference]: Finished difference. Result has 162 places, 150 transitions, 1716 flow [2023-08-27 06:04:52,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1716, PETRI_PLACES=162, PETRI_TRANSITIONS=150} [2023-08-27 06:04:52,094 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 113 predicate places. [2023-08-27 06:04:52,094 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 150 transitions, 1716 flow [2023-08-27 06:04:52,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 228.3913043478261) internal successors, (5253), 23 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:52,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:04:52,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:04:52,101 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 06:04:52,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:52,299 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:04:52,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:04:52,300 INFO L85 PathProgramCache]: Analyzing trace with hash -394536948, now seen corresponding path program 1 times [2023-08-27 06:04:52,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:04:52,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576159206] [2023-08-27 06:04:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:52,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:04:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:52,548 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 06:04:52,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:04:52,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576159206] [2023-08-27 06:04:52,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576159206] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:04:52,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921877172] [2023-08-27 06:04:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:52,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:52,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:04:52,549 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 06:04:52,551 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 06:04:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:52,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 06:04:52,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:04:52,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:04:52,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:52,719 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:52,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:52,764 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:52,775 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 06:04:52,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:04:52,792 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_889 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_889) c_~a2~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~a2~0.offset))))) is different from false [2023-08-27 06:04:52,814 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_889 (Array Int Int)) (v_ArrVal_888 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_888) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_889) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296))) is different from false [2023-08-27 06:04:52,820 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:52,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 06:04:52,826 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:52,826 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 69 [2023-08-27 06:04:52,829 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 56 treesize of output 52 [2023-08-27 06:04:52,832 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 26 treesize of output 24 [2023-08-27 06:04:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-27 06:04:52,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921877172] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:04:52,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:04:52,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 06:04:52,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878553649] [2023-08-27 06:04:52,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:04:52,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:04:52,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:04:52,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:04:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=194, Unknown=2, NotChecked=58, Total=306 [2023-08-27 06:04:52,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:04:52,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 150 transitions, 1716 flow. Second operand has 18 states, 18 states have (on average 232.72222222222223) internal successors, (4189), 18 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:52,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:04:52,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:04:52,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:04:53,576 INFO L124 PetriNetUnfolderBase]: 1578/3045 cut-off events. [2023-08-27 06:04:53,576 INFO L125 PetriNetUnfolderBase]: For 17887/17887 co-relation queries the response was YES. [2023-08-27 06:04:53,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13675 conditions, 3045 events. 1578/3045 cut-off events. For 17887/17887 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 19738 event pairs, 614 based on Foata normal form. 108/3045 useless extension candidates. Maximal degree in co-relation 13632. Up to 1499 conditions per place. [2023-08-27 06:04:53,594 INFO L140 encePairwiseOnDemand]: 662/674 looper letters, 135 selfloop transitions, 66 changer transitions 0/201 dead transitions. [2023-08-27 06:04:53,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 201 transitions, 2499 flow [2023-08-27 06:04:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:04:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:04:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1937 transitions. [2023-08-27 06:04:53,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35923590504451036 [2023-08-27 06:04:53,596 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1937 transitions. [2023-08-27 06:04:53,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1937 transitions. [2023-08-27 06:04:53,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:04:53,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1937 transitions. [2023-08-27 06:04:53,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 242.125) internal successors, (1937), 8 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:53,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:53,602 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:53,602 INFO L175 Difference]: Start difference. First operand has 162 places, 150 transitions, 1716 flow. Second operand 8 states and 1937 transitions. [2023-08-27 06:04:53,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 201 transitions, 2499 flow [2023-08-27 06:04:53,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 201 transitions, 2453 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 06:04:53,643 INFO L231 Difference]: Finished difference. Result has 166 places, 151 transitions, 1880 flow [2023-08-27 06:04:53,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1880, PETRI_PLACES=166, PETRI_TRANSITIONS=151} [2023-08-27 06:04:53,644 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 117 predicate places. [2023-08-27 06:04:53,644 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 151 transitions, 1880 flow [2023-08-27 06:04:53,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.72222222222223) internal successors, (4189), 18 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:53,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:04:53,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:04:53,651 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 06:04:53,847 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,SelfDestructingSolverStorable28 [2023-08-27 06:04:53,847 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:04:53,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:04:53,847 INFO L85 PathProgramCache]: Analyzing trace with hash -394536974, now seen corresponding path program 1 times [2023-08-27 06:04:53,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:04:53,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919931156] [2023-08-27 06:04:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:53,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:04:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:54,048 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 06:04:54,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:04:54,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919931156] [2023-08-27 06:04:54,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919931156] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:04:54,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602226010] [2023-08-27 06:04:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:54,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:54,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:04:54,049 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 06:04:54,052 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 06:04:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:54,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 06:04:54,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:04:54,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:04:54,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:54,212 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:04:54,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:54,253 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:04:54,264 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 06:04:54,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:04:54,280 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_931 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_931) c_~a2~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~a2~0.offset)) 9223372039002259456)) is different from false [2023-08-27 06:04:54,285 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_931 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_931) c_~a2~0.base) c_~a2~0.offset) 9223372039002259456)) is different from false [2023-08-27 06:04:54,309 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:54,310 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-08-27 06:04:54,315 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:54,315 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-08-27 06:04:54,318 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-08-27 06:04:54,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-08-27 06:04:54,378 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 06:04:54,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602226010] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:04:54,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:04:54,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 06:04:54,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799263563] [2023-08-27 06:04:54,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:04:54,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:04:54,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:04:54,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:04:54,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=194, Unknown=4, NotChecked=58, Total=306 [2023-08-27 06:04:54,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:04:54,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 151 transitions, 1880 flow. Second operand has 18 states, 18 states have (on average 232.72222222222223) internal successors, (4189), 18 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:54,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:04:54,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:04:54,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:04:55,151 INFO L124 PetriNetUnfolderBase]: 1432/2791 cut-off events. [2023-08-27 06:04:55,151 INFO L125 PetriNetUnfolderBase]: For 19040/19040 co-relation queries the response was YES. [2023-08-27 06:04:55,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12919 conditions, 2791 events. 1432/2791 cut-off events. For 19040/19040 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17838 event pairs, 633 based on Foata normal form. 108/2795 useless extension candidates. Maximal degree in co-relation 12874. Up to 1245 conditions per place. [2023-08-27 06:04:55,168 INFO L140 encePairwiseOnDemand]: 662/674 looper letters, 134 selfloop transitions, 66 changer transitions 0/200 dead transitions. [2023-08-27 06:04:55,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 200 transitions, 2647 flow [2023-08-27 06:04:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:04:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:04:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1936 transitions. [2023-08-27 06:04:55,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3590504451038576 [2023-08-27 06:04:55,172 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1936 transitions. [2023-08-27 06:04:55,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1936 transitions. [2023-08-27 06:04:55,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:04:55,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1936 transitions. [2023-08-27 06:04:55,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 242.0) internal successors, (1936), 8 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:55,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:55,179 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:55,179 INFO L175 Difference]: Start difference. First operand has 166 places, 151 transitions, 1880 flow. Second operand 8 states and 1936 transitions. [2023-08-27 06:04:55,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 200 transitions, 2647 flow [2023-08-27 06:04:55,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 200 transitions, 2501 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-08-27 06:04:55,231 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 1858 flow [2023-08-27 06:04:55,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1858, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2023-08-27 06:04:55,232 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 117 predicate places. [2023-08-27 06:04:55,232 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 1858 flow [2023-08-27 06:04:55,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.72222222222223) internal successors, (4189), 18 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:55,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:04:55,233 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:04:55,240 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 06:04:55,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:55,440 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:04:55,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:04:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash -878199735, now seen corresponding path program 1 times [2023-08-27 06:04:55,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:04:55,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793801934] [2023-08-27 06:04:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:55,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:04:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:04:55,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:04:55,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793801934] [2023-08-27 06:04:55,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793801934] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:04:55,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175545322] [2023-08-27 06:04:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:55,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:55,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:04:55,849 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 06:04:55,852 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 06:04:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:56,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 06:04:56,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:04:56,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:56,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:56,031 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 06:04:56,032 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 06:04:56,084 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:04:56,126 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:04:56,127 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:04:56,159 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:56,173 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:56,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:56,201 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:56,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:56,226 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:04:56,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:04:56,294 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_986 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_986) c_~a1~0.base) (+ c_~a1~0.offset 4))))) is different from false [2023-08-27 06:04:56,382 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:56,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-08-27 06:04:56,389 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:56,389 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 311 treesize of output 299 [2023-08-27 06:04:56,395 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 138 treesize of output 130 [2023-08-27 06:04:56,398 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 130 treesize of output 114 [2023-08-27 06:04:56,403 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 58 treesize of output 54 [2023-08-27 06:04:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:04:56,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175545322] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:04:56,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:04:56,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-27 06:04:56,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554148290] [2023-08-27 06:04:56,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:04:56,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 06:04:56,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:04:56,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 06:04:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=548, Unknown=7, NotChecked=48, Total=702 [2023-08-27 06:04:56,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 674 [2023-08-27 06:04:56,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 1858 flow. Second operand has 27 states, 27 states have (on average 230.37037037037038) internal successors, (6220), 27 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:56,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:04:56,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 674 [2023-08-27 06:04:56,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:04:57,614 INFO L124 PetriNetUnfolderBase]: 1807/3476 cut-off events. [2023-08-27 06:04:57,615 INFO L125 PetriNetUnfolderBase]: For 22719/22719 co-relation queries the response was YES. [2023-08-27 06:04:57,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16220 conditions, 3476 events. 1807/3476 cut-off events. For 22719/22719 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 23095 event pairs, 706 based on Foata normal form. 60/3412 useless extension candidates. Maximal degree in co-relation 16179. Up to 917 conditions per place. [2023-08-27 06:04:57,634 INFO L140 encePairwiseOnDemand]: 664/674 looper letters, 253 selfloop transitions, 23 changer transitions 0/276 dead transitions. [2023-08-27 06:04:57,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 276 transitions, 3358 flow [2023-08-27 06:04:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:04:57,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:04:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2427 transitions. [2023-08-27 06:04:57,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36008902077151334 [2023-08-27 06:04:57,637 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2427 transitions. [2023-08-27 06:04:57,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2427 transitions. [2023-08-27 06:04:57,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:04:57,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2427 transitions. [2023-08-27 06:04:57,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 242.7) internal successors, (2427), 10 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:57,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 674.0) internal successors, (7414), 11 states have internal predecessors, (7414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:57,642 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 674.0) internal successors, (7414), 11 states have internal predecessors, (7414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:57,642 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 1858 flow. Second operand 10 states and 2427 transitions. [2023-08-27 06:04:57,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 276 transitions, 3358 flow [2023-08-27 06:04:57,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 276 transitions, 3231 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-27 06:04:57,682 INFO L231 Difference]: Finished difference. Result has 172 places, 154 transitions, 1900 flow [2023-08-27 06:04:57,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1900, PETRI_PLACES=172, PETRI_TRANSITIONS=154} [2023-08-27 06:04:57,682 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 123 predicate places. [2023-08-27 06:04:57,683 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 154 transitions, 1900 flow [2023-08-27 06:04:57,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 230.37037037037038) internal successors, (6220), 27 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:57,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:04:57,683 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-27 06:04:57,689 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 06:04:57,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:57,884 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:04:57,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:04:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash 840960632, now seen corresponding path program 2 times [2023-08-27 06:04:57,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:04:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602008391] [2023-08-27 06:04:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:57,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:04:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:04:58,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:04:58,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602008391] [2023-08-27 06:04:58,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602008391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:04:58,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027686686] [2023-08-27 06:04:58,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:04:58,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:58,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:04:58,022 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 06:04:58,031 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 06:04:58,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:04:58,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:04:58,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:04:58,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:04:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 06:04:58,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:04:58,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027686686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:04:58,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:04:58,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-27 06:04:58,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917669367] [2023-08-27 06:04:58,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:04:58,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:04:58,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:04:58,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:04:58,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:04:58,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 674 [2023-08-27 06:04:58,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 154 transitions, 1900 flow. Second operand has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:58,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:04:58,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 674 [2023-08-27 06:04:58,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:04:58,751 INFO L124 PetriNetUnfolderBase]: 1807/3473 cut-off events. [2023-08-27 06:04:58,752 INFO L125 PetriNetUnfolderBase]: For 24367/24367 co-relation queries the response was YES. [2023-08-27 06:04:58,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17110 conditions, 3473 events. 1807/3473 cut-off events. For 24367/24367 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 22683 event pairs, 1562 based on Foata normal form. 3/3352 useless extension candidates. Maximal degree in co-relation 17068. Up to 3473 conditions per place. [2023-08-27 06:04:58,775 INFO L140 encePairwiseOnDemand]: 672/674 looper letters, 151 selfloop transitions, 1 changer transitions 0/152 dead transitions. [2023-08-27 06:04:58,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 152 transitions, 2156 flow [2023-08-27 06:04:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:04:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:04:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 788 transitions. [2023-08-27 06:04:58,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897131552917903 [2023-08-27 06:04:58,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 788 transitions. [2023-08-27 06:04:58,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 788 transitions. [2023-08-27 06:04:58,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:04:58,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 788 transitions. [2023-08-27 06:04:58,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:58,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:58,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 674.0) internal successors, (2696), 4 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:58,780 INFO L175 Difference]: Start difference. First operand has 172 places, 154 transitions, 1900 flow. Second operand 3 states and 788 transitions. [2023-08-27 06:04:58,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 152 transitions, 2156 flow [2023-08-27 06:04:58,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 152 transitions, 2051 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-08-27 06:04:58,828 INFO L231 Difference]: Finished difference. Result has 156 places, 152 transitions, 1749 flow [2023-08-27 06:04:58,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1749, PETRI_PLACES=156, PETRI_TRANSITIONS=152} [2023-08-27 06:04:58,828 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 107 predicate places. [2023-08-27 06:04:58,828 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 152 transitions, 1749 flow [2023-08-27 06:04:58,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:04:58,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:04:58,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:04:58,835 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 06:04:59,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:59,035 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:04:59,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:04:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash -878199738, now seen corresponding path program 1 times [2023-08-27 06:04:59,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:04:59,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399446763] [2023-08-27 06:04:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:59,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:04:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:04:59,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:04:59,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399446763] [2023-08-27 06:04:59,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399446763] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:04:59,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115642746] [2023-08-27 06:04:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:04:59,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:04:59,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:04:59,469 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 06:04:59,473 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 06:04:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:04:59,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 06:04:59,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:04:59,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:04:59,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:59,739 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:59,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:04:59,772 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:04:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:04:59,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:04:59,890 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1102 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1102) c_~a2~0.base) (+ 4 c_~a2~0.offset))))) is different from false [2023-08-27 06:04:59,896 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1102 (Array Int Int)) (v_ArrVal_1101 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1101) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1102) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649))) is different from false [2023-08-27 06:04:59,902 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:59,902 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 06:04:59,908 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:04:59,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 06:04:59,915 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 06:04:59,934 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 06:05:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-08-27 06:05:00,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115642746] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:05:00,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:05:00,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 27 [2023-08-27 06:05:00,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093261266] [2023-08-27 06:05:00,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:05:00,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 06:05:00,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 06:05:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=616, Unknown=2, NotChecked=102, Total=812 [2023-08-27 06:05:00,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 674 [2023-08-27 06:05:00,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 152 transitions, 1749 flow. Second operand has 29 states, 29 states have (on average 211.31034482758622) internal successors, (6128), 29 states have internal predecessors, (6128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:00,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:00,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 674 [2023-08-27 06:05:00,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:02,285 INFO L124 PetriNetUnfolderBase]: 2685/5102 cut-off events. [2023-08-27 06:05:02,285 INFO L125 PetriNetUnfolderBase]: For 35892/35892 co-relation queries the response was YES. [2023-08-27 06:05:02,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25084 conditions, 5102 events. 2685/5102 cut-off events. For 35892/35892 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 36022 event pairs, 872 based on Foata normal form. 180/5110 useless extension candidates. Maximal degree in co-relation 25051. Up to 1081 conditions per place. [2023-08-27 06:05:02,312 INFO L140 encePairwiseOnDemand]: 660/674 looper letters, 313 selfloop transitions, 79 changer transitions 0/392 dead transitions. [2023-08-27 06:05:02,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 392 transitions, 4435 flow [2023-08-27 06:05:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-27 06:05:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-27 06:05:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5688 transitions. [2023-08-27 06:05:02,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3245834284409952 [2023-08-27 06:05:02,318 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5688 transitions. [2023-08-27 06:05:02,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5688 transitions. [2023-08-27 06:05:02,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:02,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5688 transitions. [2023-08-27 06:05:02,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 218.76923076923077) internal successors, (5688), 26 states have internal predecessors, (5688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:02,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 674.0) internal successors, (18198), 27 states have internal predecessors, (18198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:02,334 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 674.0) internal successors, (18198), 27 states have internal predecessors, (18198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:02,334 INFO L175 Difference]: Start difference. First operand has 156 places, 152 transitions, 1749 flow. Second operand 26 states and 5688 transitions. [2023-08-27 06:05:02,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 392 transitions, 4435 flow [2023-08-27 06:05:02,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 392 transitions, 4434 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:05:02,404 INFO L231 Difference]: Finished difference. Result has 184 places, 180 transitions, 2344 flow [2023-08-27 06:05:02,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2344, PETRI_PLACES=184, PETRI_TRANSITIONS=180} [2023-08-27 06:05:02,404 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 135 predicate places. [2023-08-27 06:05:02,404 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 180 transitions, 2344 flow [2023-08-27 06:05:02,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 211.31034482758622) internal successors, (6128), 29 states have internal predecessors, (6128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:02,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:02,405 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:02,411 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 06:05:02,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:02,606 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:02,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:02,606 INFO L85 PathProgramCache]: Analyzing trace with hash -878199737, now seen corresponding path program 1 times [2023-08-27 06:05:02,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:02,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930941943] [2023-08-27 06:05:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:02,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:02,926 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 06:05:02,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:02,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930941943] [2023-08-27 06:05:02,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930941943] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:02,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893880605] [2023-08-27 06:05:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:02,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:02,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:05:02,929 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 06:05:02,956 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 06:05:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:03,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-27 06:05:03,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:05:03,174 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:05:03,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:03,210 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:05:03,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:03,242 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:05:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:05:03,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:05:11,525 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 4 c_~a2~0.offset))) (and (forall ((v_ArrVal_1152 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1152))) (let ((.cse0 (select (select .cse1 ~a1~0.base) (+ ~a1~0.offset 4)))) (or (< .cse0 0) (< 0 .cse0) (<= (select (select .cse1 c_~a2~0.base) .cse2) (+ 2147483647 .cse0)))))) (forall ((v_ArrVal_1152 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1152))) (let ((.cse3 (select (select .cse4 ~a1~0.base) (+ ~a1~0.offset 4)))) (or (< 9223372039002259455 .cse3) (<= .cse3 0) (<= (select (select .cse4 c_~a2~0.base) .cse2) (+ 2147483647 .cse3)))))))) is different from false [2023-08-27 06:05:11,566 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_1152 (Array Int Int)) (~a1~0.base Int) (v_ArrVal_1151 (Array Int Int)) (~a1~0.offset Int)) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1151) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1152))) (let ((.cse2 (select (select .cse0 ~a1~0.base) (+ ~a1~0.offset 4)))) (or (<= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse1) (+ 2147483647 .cse2)) (< 0 .cse2) (< .cse2 0))))) (forall ((v_ArrVal_1152 (Array Int Int)) (~a1~0.base Int) (v_ArrVal_1151 (Array Int Int)) (~a1~0.offset Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1151) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1152))) (let ((.cse4 (select (select .cse3 ~a1~0.base) (+ ~a1~0.offset 4)))) (or (<= (select (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse1) (+ 2147483647 .cse4)) (< 9223372039002259455 .cse4) (<= .cse4 0))))))) is different from false [2023-08-27 06:05:11,582 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:11,582 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 134 [2023-08-27 06:05:11,632 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:11,632 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2045 treesize of output 1872 [2023-08-27 06:05:11,666 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:11,666 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 865 treesize of output 794 [2023-08-27 06:05:11,688 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:11,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 785 treesize of output 754 [2023-08-27 06:05:11,713 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:11,713 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 745 treesize of output 714 [2023-08-27 06:05:11,737 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:11,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 705 treesize of output 634 [2023-08-27 06:05:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-08-27 06:05:23,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893880605] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:05:23,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:05:23,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 21 [2023-08-27 06:05:23,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208997645] [2023-08-27 06:05:23,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:05:23,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 06:05:23,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:23,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 06:05:23,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=357, Unknown=6, NotChecked=78, Total=506 [2023-08-27 06:05:23,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:05:23,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 180 transitions, 2344 flow. Second operand has 23 states, 23 states have (on average 232.3913043478261) internal successors, (5345), 23 states have internal predecessors, (5345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:23,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:23,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:05:23,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:26,910 INFO L124 PetriNetUnfolderBase]: 2535/4832 cut-off events. [2023-08-27 06:05:26,910 INFO L125 PetriNetUnfolderBase]: For 39749/39749 co-relation queries the response was YES. [2023-08-27 06:05:26,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24430 conditions, 4832 events. 2535/4832 cut-off events. For 39749/39749 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 33734 event pairs, 1228 based on Foata normal form. 120/4848 useless extension candidates. Maximal degree in co-relation 24392. Up to 2076 conditions per place. [2023-08-27 06:05:26,939 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 206 selfloop transitions, 66 changer transitions 0/272 dead transitions. [2023-08-27 06:05:26,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 272 transitions, 3532 flow [2023-08-27 06:05:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:05:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:05:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2428 transitions. [2023-08-27 06:05:26,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602373887240356 [2023-08-27 06:05:26,942 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2428 transitions. [2023-08-27 06:05:26,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2428 transitions. [2023-08-27 06:05:26,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:26,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2428 transitions. [2023-08-27 06:05:26,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 242.8) internal successors, (2428), 10 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:26,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 674.0) internal successors, (7414), 11 states have internal predecessors, (7414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:26,949 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 674.0) internal successors, (7414), 11 states have internal predecessors, (7414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:26,949 INFO L175 Difference]: Start difference. First operand has 184 places, 180 transitions, 2344 flow. Second operand 10 states and 2428 transitions. [2023-08-27 06:05:26,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 272 transitions, 3532 flow [2023-08-27 06:05:27,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 272 transitions, 3420 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-27 06:05:27,027 INFO L231 Difference]: Finished difference. Result has 186 places, 179 transitions, 2344 flow [2023-08-27 06:05:27,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2344, PETRI_PLACES=186, PETRI_TRANSITIONS=179} [2023-08-27 06:05:27,027 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 137 predicate places. [2023-08-27 06:05:27,027 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 179 transitions, 2344 flow [2023-08-27 06:05:27,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 232.3913043478261) internal successors, (5345), 23 states have internal predecessors, (5345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:27,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:27,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:27,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-27 06:05:27,228 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,SelfDestructingSolverStorable33 [2023-08-27 06:05:27,228 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:27,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:27,229 INFO L85 PathProgramCache]: Analyzing trace with hash -878199765, now seen corresponding path program 2 times [2023-08-27 06:05:27,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:27,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835777967] [2023-08-27 06:05:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:27,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:05:27,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835777967] [2023-08-27 06:05:27,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835777967] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666870193] [2023-08-27 06:05:27,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:05:27,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:27,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:05:27,681 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 06:05:27,688 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 06:05:27,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:05:27,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:05:27,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 06:05:27,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:05:27,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:27,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:27,901 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 06:05:27,901 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 06:05:27,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:05:27,992 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:05:27,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:05:28,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:05:28,036 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:05:28,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:28,068 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:05:28,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:28,101 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:05:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:05:28,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:05:28,235 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1207 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1207) c_~a1~0.base) (+ c_~a1~0.offset 4)) 9223372039002259456)) is different from false [2023-08-27 06:05:28,241 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1207 (Array Int Int)) (v_ArrVal_1206 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1206) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1207) c_~a1~0.base) (+ c_~a1~0.offset 4)) 9223372039002259456)) is different from false [2023-08-27 06:05:28,321 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:28,321 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 06:05:28,331 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:28,331 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 553 treesize of output 529 [2023-08-27 06:05:28,340 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 59 treesize of output 51 [2023-08-27 06:05:28,345 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 51 treesize of output 47 [2023-08-27 06:05:28,351 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2023-08-27 06:05:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-08-27 06:05:28,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666870193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:05:28,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:05:28,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-27 06:05:28,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248750957] [2023-08-27 06:05:28,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:05:28,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 06:05:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 06:05:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=617, Unknown=6, NotChecked=102, Total=812 [2023-08-27 06:05:28,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 674 [2023-08-27 06:05:28,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 179 transitions, 2344 flow. Second operand has 29 states, 29 states have (on average 209.3448275862069) internal successors, (6071), 29 states have internal predecessors, (6071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:28,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:28,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 674 [2023-08-27 06:05:28,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:30,805 INFO L124 PetriNetUnfolderBase]: 2854/5415 cut-off events. [2023-08-27 06:05:30,805 INFO L125 PetriNetUnfolderBase]: For 40149/40149 co-relation queries the response was YES. [2023-08-27 06:05:30,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27031 conditions, 5415 events. 2854/5415 cut-off events. For 40149/40149 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 38784 event pairs, 647 based on Foata normal form. 180/5487 useless extension candidates. Maximal degree in co-relation 26993. Up to 901 conditions per place. [2023-08-27 06:05:30,832 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 470 selfloop transitions, 43 changer transitions 0/513 dead transitions. [2023-08-27 06:05:30,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 513 transitions, 5909 flow [2023-08-27 06:05:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 06:05:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 06:05:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4441 transitions. [2023-08-27 06:05:30,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32945103857566765 [2023-08-27 06:05:30,837 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4441 transitions. [2023-08-27 06:05:30,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4441 transitions. [2023-08-27 06:05:30,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:30,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4441 transitions. [2023-08-27 06:05:30,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 222.05) internal successors, (4441), 20 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:30,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 674.0) internal successors, (14154), 21 states have internal predecessors, (14154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:30,851 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 674.0) internal successors, (14154), 21 states have internal predecessors, (14154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:30,851 INFO L175 Difference]: Start difference. First operand has 186 places, 179 transitions, 2344 flow. Second operand 20 states and 4441 transitions. [2023-08-27 06:05:30,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 513 transitions, 5909 flow [2023-08-27 06:05:30,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 513 transitions, 5790 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-27 06:05:30,963 INFO L231 Difference]: Finished difference. Result has 200 places, 184 transitions, 2393 flow [2023-08-27 06:05:30,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2393, PETRI_PLACES=200, PETRI_TRANSITIONS=184} [2023-08-27 06:05:30,965 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 151 predicate places. [2023-08-27 06:05:30,965 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 184 transitions, 2393 flow [2023-08-27 06:05:30,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 209.3448275862069) internal successors, (6071), 29 states have internal predecessors, (6071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:30,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:30,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:30,975 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 06:05:31,173 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,SelfDestructingSolverStorable34 [2023-08-27 06:05:31,173 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:31,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:31,173 INFO L85 PathProgramCache]: Analyzing trace with hash -884992293, now seen corresponding path program 2 times [2023-08-27 06:05:31,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:31,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844211653] [2023-08-27 06:05:31,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:31,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:05:31,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:31,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844211653] [2023-08-27 06:05:31,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844211653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:31,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17277005] [2023-08-27 06:05:31,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:05:31,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:31,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:05:31,210 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 06:05:31,220 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 06:05:31,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:05:31,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:05:31,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:05:31,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:05:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:05:31,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:05:31,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:05:31,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17277005] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:05:31,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:05:31,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2023-08-27 06:05:31,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954613785] [2023-08-27 06:05:31,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:05:31,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:05:31,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:31,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:05:31,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:05:31,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 674 [2023-08-27 06:05:31,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 184 transitions, 2393 flow. Second operand has 6 states, 6 states have (on average 261.6666666666667) internal successors, (1570), 6 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:31,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:31,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 674 [2023-08-27 06:05:31,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:32,620 INFO L124 PetriNetUnfolderBase]: 4142/7813 cut-off events. [2023-08-27 06:05:32,621 INFO L125 PetriNetUnfolderBase]: For 77412/77412 co-relation queries the response was YES. [2023-08-27 06:05:32,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40085 conditions, 7813 events. 4142/7813 cut-off events. For 77412/77412 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 58317 event pairs, 605 based on Foata normal form. 0/7705 useless extension candidates. Maximal degree in co-relation 40047. Up to 2586 conditions per place. [2023-08-27 06:05:32,671 INFO L140 encePairwiseOnDemand]: 668/674 looper letters, 275 selfloop transitions, 34 changer transitions 0/309 dead transitions. [2023-08-27 06:05:32,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 309 transitions, 4597 flow [2023-08-27 06:05:32,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:05:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:05:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1647 transitions. [2023-08-27 06:05:32,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072700296735905 [2023-08-27 06:05:32,673 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1647 transitions. [2023-08-27 06:05:32,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1647 transitions. [2023-08-27 06:05:32,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:32,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1647 transitions. [2023-08-27 06:05:32,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 274.5) internal successors, (1647), 6 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:32,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:32,676 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 674.0) internal successors, (4718), 7 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:32,677 INFO L175 Difference]: Start difference. First operand has 200 places, 184 transitions, 2393 flow. Second operand 6 states and 1647 transitions. [2023-08-27 06:05:32,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 309 transitions, 4597 flow [2023-08-27 06:05:32,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 309 transitions, 4380 flow, removed 48 selfloop flow, removed 10 redundant places. [2023-08-27 06:05:32,783 INFO L231 Difference]: Finished difference. Result has 196 places, 186 transitions, 2430 flow [2023-08-27 06:05:32,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2430, PETRI_PLACES=196, PETRI_TRANSITIONS=186} [2023-08-27 06:05:32,783 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 147 predicate places. [2023-08-27 06:05:32,783 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 186 transitions, 2430 flow [2023-08-27 06:05:32,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.6666666666667) internal successors, (1570), 6 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:32,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:32,784 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:32,789 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 06:05:32,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 06:05:32,985 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:32,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:32,985 INFO L85 PathProgramCache]: Analyzing trace with hash -884992294, now seen corresponding path program 1 times [2023-08-27 06:05:32,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:32,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899017393] [2023-08-27 06:05:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:32,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:05:33,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:33,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899017393] [2023-08-27 06:05:33,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899017393] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:33,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691053949] [2023-08-27 06:05:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:33,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:33,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:05:33,023 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 06:05:33,047 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 06:05:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:33,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:05:33,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:05:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:05:33,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:05:33,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691053949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:05:33,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:05:33,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 06:05:33,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728079181] [2023-08-27 06:05:33,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:05:33,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:05:33,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:33,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:05:33,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:05:33,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 674 [2023-08-27 06:05:33,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 186 transitions, 2430 flow. Second operand has 4 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:33,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:33,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 674 [2023-08-27 06:05:33,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:34,314 INFO L124 PetriNetUnfolderBase]: 4007/7624 cut-off events. [2023-08-27 06:05:34,314 INFO L125 PetriNetUnfolderBase]: For 72201/72201 co-relation queries the response was YES. [2023-08-27 06:05:34,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38272 conditions, 7624 events. 4007/7624 cut-off events. For 72201/72201 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 57179 event pairs, 438 based on Foata normal form. 108/7732 useless extension candidates. Maximal degree in co-relation 38232. Up to 4930 conditions per place. [2023-08-27 06:05:34,367 INFO L140 encePairwiseOnDemand]: 671/674 looper letters, 227 selfloop transitions, 29 changer transitions 0/256 dead transitions. [2023-08-27 06:05:34,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 256 transitions, 3848 flow [2023-08-27 06:05:34,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:05:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:05:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1157 transitions. [2023-08-27 06:05:34,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42915430267062316 [2023-08-27 06:05:34,369 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1157 transitions. [2023-08-27 06:05:34,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1157 transitions. [2023-08-27 06:05:34,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:34,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1157 transitions. [2023-08-27 06:05:34,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:34,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 674.0) internal successors, (3370), 5 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:34,371 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 674.0) internal successors, (3370), 5 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:34,371 INFO L175 Difference]: Start difference. First operand has 196 places, 186 transitions, 2430 flow. Second operand 4 states and 1157 transitions. [2023-08-27 06:05:34,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 256 transitions, 3848 flow [2023-08-27 06:05:34,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 256 transitions, 3772 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-27 06:05:34,478 INFO L231 Difference]: Finished difference. Result has 194 places, 184 transitions, 2399 flow [2023-08-27 06:05:34,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=2341, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2399, PETRI_PLACES=194, PETRI_TRANSITIONS=184} [2023-08-27 06:05:34,479 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 145 predicate places. [2023-08-27 06:05:34,479 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 184 transitions, 2399 flow [2023-08-27 06:05:34,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.75) internal successors, (1103), 4 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:34,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:34,479 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:34,484 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 06:05:34,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:34,680 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:34,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:34,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1454388053, now seen corresponding path program 2 times [2023-08-27 06:05:34,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:34,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183071981] [2023-08-27 06:05:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:34,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:05:34,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:34,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183071981] [2023-08-27 06:05:34,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183071981] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:34,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367137246] [2023-08-27 06:05:34,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:05:34,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:34,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:05:34,793 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 06:05:34,819 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 06:05:34,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:05:34,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:05:34,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 06:05:34,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:05:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:05:35,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:05:35,065 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 23 treesize of output 7 [2023-08-27 06:05:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:05:35,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367137246] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:05:35,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:05:35,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 06:05:35,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635646229] [2023-08-27 06:05:35,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:05:35,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:05:35,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:05:35,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:05:35,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 674 [2023-08-27 06:05:35,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 184 transitions, 2399 flow. Second operand has 19 states, 19 states have (on average 235.42105263157896) internal successors, (4473), 19 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:35,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:35,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 674 [2023-08-27 06:05:35,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:36,265 INFO L124 PetriNetUnfolderBase]: 3103/6114 cut-off events. [2023-08-27 06:05:36,265 INFO L125 PetriNetUnfolderBase]: For 52481/52481 co-relation queries the response was YES. [2023-08-27 06:05:36,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29156 conditions, 6114 events. 3103/6114 cut-off events. For 52481/52481 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 45166 event pairs, 1568 based on Foata normal form. 294/6408 useless extension candidates. Maximal degree in co-relation 29118. Up to 3192 conditions per place. [2023-08-27 06:05:36,297 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 271 selfloop transitions, 50 changer transitions 0/321 dead transitions. [2023-08-27 06:05:36,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 321 transitions, 4271 flow [2023-08-27 06:05:36,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:05:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:05:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3398 transitions. [2023-08-27 06:05:36,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36011021619330225 [2023-08-27 06:05:36,301 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3398 transitions. [2023-08-27 06:05:36,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3398 transitions. [2023-08-27 06:05:36,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:36,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3398 transitions. [2023-08-27 06:05:36,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 242.71428571428572) internal successors, (3398), 14 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:36,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 674.0) internal successors, (10110), 15 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:36,311 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 674.0) internal successors, (10110), 15 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:36,311 INFO L175 Difference]: Start difference. First operand has 194 places, 184 transitions, 2399 flow. Second operand 14 states and 3398 transitions. [2023-08-27 06:05:36,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 321 transitions, 4271 flow [2023-08-27 06:05:36,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 321 transitions, 4165 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 06:05:36,488 INFO L231 Difference]: Finished difference. Result has 203 places, 180 transitions, 2388 flow [2023-08-27 06:05:36,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2388, PETRI_PLACES=203, PETRI_TRANSITIONS=180} [2023-08-27 06:05:36,488 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 154 predicate places. [2023-08-27 06:05:36,488 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 180 transitions, 2388 flow [2023-08-27 06:05:36,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 235.42105263157896) internal successors, (4473), 19 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:36,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:36,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:36,494 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 06:05:36,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 06:05:36,689 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:36,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:36,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1659706181, now seen corresponding path program 1 times [2023-08-27 06:05:36,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:36,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312989800] [2023-08-27 06:05:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:36,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:36,951 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 06:05:36,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:36,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312989800] [2023-08-27 06:05:36,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312989800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:05:36,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:05:36,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 06:05:36,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992491349] [2023-08-27 06:05:36,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:05:36,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 06:05:36,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 06:05:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 06:05:36,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 674 [2023-08-27 06:05:36,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 180 transitions, 2388 flow. Second operand has 8 states, 8 states have (on average 225.875) internal successors, (1807), 8 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:36,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:36,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 674 [2023-08-27 06:05:36,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:37,966 INFO L124 PetriNetUnfolderBase]: 3103/6113 cut-off events. [2023-08-27 06:05:37,967 INFO L125 PetriNetUnfolderBase]: For 53593/53593 co-relation queries the response was YES. [2023-08-27 06:05:37,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29330 conditions, 6113 events. 3103/6113 cut-off events. For 53593/53593 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 45367 event pairs, 1813 based on Foata normal form. 1/6114 useless extension candidates. Maximal degree in co-relation 29290. Up to 5898 conditions per place. [2023-08-27 06:05:37,999 INFO L140 encePairwiseOnDemand]: 666/674 looper letters, 162 selfloop transitions, 35 changer transitions 17/214 dead transitions. [2023-08-27 06:05:37,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 214 transitions, 3148 flow [2023-08-27 06:05:38,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:05:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:05:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1626 transitions. [2023-08-27 06:05:38,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34463755828740994 [2023-08-27 06:05:38,001 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1626 transitions. [2023-08-27 06:05:38,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1626 transitions. [2023-08-27 06:05:38,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:38,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1626 transitions. [2023-08-27 06:05:38,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 232.28571428571428) internal successors, (1626), 7 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:38,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:38,004 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:38,004 INFO L175 Difference]: Start difference. First operand has 203 places, 180 transitions, 2388 flow. Second operand 7 states and 1626 transitions. [2023-08-27 06:05:38,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 214 transitions, 3148 flow [2023-08-27 06:05:38,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 214 transitions, 3102 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-27 06:05:38,120 INFO L231 Difference]: Finished difference. Result has 202 places, 195 transitions, 2716 flow [2023-08-27 06:05:38,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2716, PETRI_PLACES=202, PETRI_TRANSITIONS=195} [2023-08-27 06:05:38,121 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 153 predicate places. [2023-08-27 06:05:38,121 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 195 transitions, 2716 flow [2023-08-27 06:05:38,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 225.875) internal successors, (1807), 8 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:38,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:38,121 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:38,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 06:05:38,122 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:38,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:38,122 INFO L85 PathProgramCache]: Analyzing trace with hash 27085411, now seen corresponding path program 3 times [2023-08-27 06:05:38,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:38,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641444543] [2023-08-27 06:05:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:38,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:05:38,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:38,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641444543] [2023-08-27 06:05:38,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641444543] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:38,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196978008] [2023-08-27 06:05:38,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:05:38,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:38,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:05:38,234 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 06:05:38,235 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 06:05:38,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:05:38,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:05:38,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 06:05:38,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:05:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:05:38,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:05:38,454 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 23 treesize of output 7 [2023-08-27 06:05:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:05:38,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196978008] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:05:38,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:05:38,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 06:05:38,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059768544] [2023-08-27 06:05:38,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:05:38,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:05:38,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:38,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:05:38,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:05:38,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 674 [2023-08-27 06:05:38,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 195 transitions, 2716 flow. Second operand has 19 states, 19 states have (on average 235.42105263157896) internal successors, (4473), 19 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:38,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:38,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 674 [2023-08-27 06:05:38,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:40,296 INFO L124 PetriNetUnfolderBase]: 4834/9618 cut-off events. [2023-08-27 06:05:40,297 INFO L125 PetriNetUnfolderBase]: For 92976/92976 co-relation queries the response was YES. [2023-08-27 06:05:40,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44155 conditions, 9618 events. 4834/9618 cut-off events. For 92976/92976 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 78985 event pairs, 2368 based on Foata normal form. 588/10206 useless extension candidates. Maximal degree in co-relation 44113. Up to 4829 conditions per place. [2023-08-27 06:05:40,345 INFO L140 encePairwiseOnDemand]: 664/674 looper letters, 272 selfloop transitions, 63 changer transitions 0/335 dead transitions. [2023-08-27 06:05:40,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 335 transitions, 4748 flow [2023-08-27 06:05:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:05:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:05:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2221 transitions. [2023-08-27 06:05:40,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661391361688098 [2023-08-27 06:05:40,347 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2221 transitions. [2023-08-27 06:05:40,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2221 transitions. [2023-08-27 06:05:40,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:40,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2221 transitions. [2023-08-27 06:05:40,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.77777777777777) internal successors, (2221), 9 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:40,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 674.0) internal successors, (6740), 10 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:40,351 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 674.0) internal successors, (6740), 10 states have internal predecessors, (6740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:40,351 INFO L175 Difference]: Start difference. First operand has 202 places, 195 transitions, 2716 flow. Second operand 9 states and 2221 transitions. [2023-08-27 06:05:40,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 335 transitions, 4748 flow [2023-08-27 06:05:40,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 335 transitions, 4695 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 06:05:40,588 INFO L231 Difference]: Finished difference. Result has 208 places, 208 transitions, 3118 flow [2023-08-27 06:05:40,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=2677, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3118, PETRI_PLACES=208, PETRI_TRANSITIONS=208} [2023-08-27 06:05:40,589 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 159 predicate places. [2023-08-27 06:05:40,589 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 208 transitions, 3118 flow [2023-08-27 06:05:40,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 235.42105263157896) internal successors, (4473), 19 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:40,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:40,590 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:40,595 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 06:05:40,790 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,SelfDestructingSolverStorable39 [2023-08-27 06:05:40,790 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:40,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -74220098, now seen corresponding path program 1 times [2023-08-27 06:05:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:40,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382443116] [2023-08-27 06:05:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:40,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:05:41,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:41,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382443116] [2023-08-27 06:05:41,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382443116] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:41,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900445632] [2023-08-27 06:05:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:41,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:41,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:05:41,409 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 06:05:41,411 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 06:05:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:41,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 06:05:41,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:05:41,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:41,602 INFO L322 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-08-27 06:05:41,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2023-08-27 06:05:41,648 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:05:41,678 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:05:41,678 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:05:41,703 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:05:41,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:05:41,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:41,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:05:41,856 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 15 treesize of output 7 [2023-08-27 06:05:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:05:41,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:05:42,056 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:42,056 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 06:05:42,063 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:42,063 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 06:05:42,068 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 06:05:42,072 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-08-27 06:05:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:05:42,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900445632] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:05:42,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:05:42,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2023-08-27 06:05:42,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670304098] [2023-08-27 06:05:42,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:05:42,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 06:05:42,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:42,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 06:05:42,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=618, Unknown=9, NotChecked=0, Total=702 [2023-08-27 06:05:42,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 674 [2023-08-27 06:05:42,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 208 transitions, 3118 flow. Second operand has 27 states, 27 states have (on average 208.5185185185185) internal successors, (5630), 27 states have internal predecessors, (5630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:42,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:42,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 674 [2023-08-27 06:05:42,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:44,983 INFO L124 PetriNetUnfolderBase]: 5348/10432 cut-off events. [2023-08-27 06:05:44,984 INFO L125 PetriNetUnfolderBase]: For 110165/110165 co-relation queries the response was YES. [2023-08-27 06:05:45,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51056 conditions, 10432 events. 5348/10432 cut-off events. For 110165/110165 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 84503 event pairs, 4302 based on Foata normal form. 106/10538 useless extension candidates. Maximal degree in co-relation 51012. Up to 8589 conditions per place. [2023-08-27 06:05:45,046 INFO L140 encePairwiseOnDemand]: 663/674 looper letters, 248 selfloop transitions, 102 changer transitions 0/350 dead transitions. [2023-08-27 06:05:45,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 350 transitions, 5177 flow [2023-08-27 06:05:45,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 06:05:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 06:05:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4907 transitions. [2023-08-27 06:05:45,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3165398013159592 [2023-08-27 06:05:45,051 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4907 transitions. [2023-08-27 06:05:45,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4907 transitions. [2023-08-27 06:05:45,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:45,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4907 transitions. [2023-08-27 06:05:45,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 213.34782608695653) internal successors, (4907), 23 states have internal predecessors, (4907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:45,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 674.0) internal successors, (16176), 24 states have internal predecessors, (16176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:45,061 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 674.0) internal successors, (16176), 24 states have internal predecessors, (16176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:45,061 INFO L175 Difference]: Start difference. First operand has 208 places, 208 transitions, 3118 flow. Second operand 23 states and 4907 transitions. [2023-08-27 06:05:45,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 350 transitions, 5177 flow [2023-08-27 06:05:45,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 350 transitions, 5115 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 06:05:45,441 INFO L231 Difference]: Finished difference. Result has 237 places, 264 transitions, 4085 flow [2023-08-27 06:05:45,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=3058, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4085, PETRI_PLACES=237, PETRI_TRANSITIONS=264} [2023-08-27 06:05:45,442 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 188 predicate places. [2023-08-27 06:05:45,442 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 264 transitions, 4085 flow [2023-08-27 06:05:45,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 208.5185185185185) internal successors, (5630), 27 states have internal predecessors, (5630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:45,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:45,443 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:45,448 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 06:05:45,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:45,643 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:45,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash -74220134, now seen corresponding path program 1 times [2023-08-27 06:05:45,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:45,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828434514] [2023-08-27 06:05:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:45,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:05:45,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:45,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828434514] [2023-08-27 06:05:45,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828434514] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:45,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059257863] [2023-08-27 06:05:45,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:45,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:45,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:05:45,911 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 06:05:45,930 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 06:05:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:46,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-27 06:05:46,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:05:46,118 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:05:46,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:46,142 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:05:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:05:46,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:05:46,231 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1497 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1497) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2023-08-27 06:05:46,238 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:46,239 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-08-27 06:05:46,246 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:46,246 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-08-27 06:05:46,260 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-08-27 06:05:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-08-27 06:05:46,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059257863] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:05:46,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:05:46,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 19 [2023-08-27 06:05:46,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997770956] [2023-08-27 06:05:46,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:05:46,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:05:46,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:46,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:05:46,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=325, Unknown=1, NotChecked=36, Total=420 [2023-08-27 06:05:46,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 674 [2023-08-27 06:05:46,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 264 transitions, 4085 flow. Second operand has 21 states, 21 states have (on average 234.85714285714286) internal successors, (4932), 21 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:46,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:46,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 674 [2023-08-27 06:05:46,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:48,678 INFO L124 PetriNetUnfolderBase]: 5317/10336 cut-off events. [2023-08-27 06:05:48,679 INFO L125 PetriNetUnfolderBase]: For 119837/119837 co-relation queries the response was YES. [2023-08-27 06:05:48,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52702 conditions, 10336 events. 5317/10336 cut-off events. For 119837/119837 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 83152 event pairs, 3259 based on Foata normal form. 4/10340 useless extension candidates. Maximal degree in co-relation 52646. Up to 7330 conditions per place. [2023-08-27 06:05:48,749 INFO L140 encePairwiseOnDemand]: 661/674 looper letters, 197 selfloop transitions, 136 changer transitions 0/333 dead transitions. [2023-08-27 06:05:48,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 333 transitions, 5662 flow [2023-08-27 06:05:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 06:05:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 06:05:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3117 transitions. [2023-08-27 06:05:48,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3557406984706688 [2023-08-27 06:05:48,752 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3117 transitions. [2023-08-27 06:05:48,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3117 transitions. [2023-08-27 06:05:48,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:48,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3117 transitions. [2023-08-27 06:05:48,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 239.76923076923077) internal successors, (3117), 13 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:48,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 674.0) internal successors, (9436), 14 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:48,759 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 674.0) internal successors, (9436), 14 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:48,759 INFO L175 Difference]: Start difference. First operand has 237 places, 264 transitions, 4085 flow. Second operand 13 states and 3117 transitions. [2023-08-27 06:05:48,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 333 transitions, 5662 flow [2023-08-27 06:05:49,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 333 transitions, 5594 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-08-27 06:05:49,170 INFO L231 Difference]: Finished difference. Result has 248 places, 284 transitions, 4691 flow [2023-08-27 06:05:49,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=3997, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4691, PETRI_PLACES=248, PETRI_TRANSITIONS=284} [2023-08-27 06:05:49,171 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 199 predicate places. [2023-08-27 06:05:49,171 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 284 transitions, 4691 flow [2023-08-27 06:05:49,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 234.85714285714286) internal successors, (4932), 21 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:49,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:49,172 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:49,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-08-27 06:05:49,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:49,372 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:49,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:49,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1994142575, now seen corresponding path program 1 times [2023-08-27 06:05:49,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:49,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330058064] [2023-08-27 06:05:49,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:49,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:05:49,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:49,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330058064] [2023-08-27 06:05:49,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330058064] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:49,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829211436] [2023-08-27 06:05:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:49,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:49,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:05:49,769 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 06:05:49,770 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 06:05:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:49,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 06:05:49,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:05:49,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:49,942 INFO L322 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-08-27 06:05:49,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2023-08-27 06:05:49,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:05:50,012 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:05:50,013 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:05:50,038 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:05:50,046 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:05:50,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:50,080 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:05:50,129 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 17 treesize of output 9 [2023-08-27 06:05:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:05:50,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:05:50,206 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 124 treesize of output 108 [2023-08-27 06:05:50,302 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1551 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1551) c_~a1~0.base) (+ c_~a1~0.offset 4))))) is different from false [2023-08-27 06:05:50,378 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:50,378 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 06:05:50,386 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:50,386 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 06:05:50,392 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 06:05:50,397 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 32 treesize of output 24 [2023-08-27 06:05:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-08-27 06:05:50,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829211436] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:05:50,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:05:50,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-27 06:05:50,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802763367] [2023-08-27 06:05:50,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:05:50,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 06:05:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:50,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 06:05:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=4, NotChecked=46, Total=650 [2023-08-27 06:05:50,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 674 [2023-08-27 06:05:50,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 284 transitions, 4691 flow. Second operand has 26 states, 26 states have (on average 229.65384615384616) internal successors, (5971), 26 states have internal predecessors, (5971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:50,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:50,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 674 [2023-08-27 06:05:50,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:52,992 INFO L124 PetriNetUnfolderBase]: 5216/10161 cut-off events. [2023-08-27 06:05:52,992 INFO L125 PetriNetUnfolderBase]: For 123705/123705 co-relation queries the response was YES. [2023-08-27 06:05:53,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52933 conditions, 10161 events. 5216/10161 cut-off events. For 123705/123705 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 81874 event pairs, 4313 based on Foata normal form. 74/10235 useless extension candidates. Maximal degree in co-relation 52873. Up to 8980 conditions per place. [2023-08-27 06:05:53,104 INFO L140 encePairwiseOnDemand]: 664/674 looper letters, 267 selfloop transitions, 84 changer transitions 0/351 dead transitions. [2023-08-27 06:05:53,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 351 transitions, 6207 flow [2023-08-27 06:05:53,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 06:05:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 06:05:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2829 transitions. [2023-08-27 06:05:53,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34977744807121663 [2023-08-27 06:05:53,107 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2829 transitions. [2023-08-27 06:05:53,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2829 transitions. [2023-08-27 06:05:53,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:53,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2829 transitions. [2023-08-27 06:05:53,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 235.75) internal successors, (2829), 12 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:53,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 674.0) internal successors, (8762), 13 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:53,113 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 674.0) internal successors, (8762), 13 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:53,113 INFO L175 Difference]: Start difference. First operand has 248 places, 284 transitions, 4691 flow. Second operand 12 states and 2829 transitions. [2023-08-27 06:05:53,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 351 transitions, 6207 flow [2023-08-27 06:05:53,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 351 transitions, 6112 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-27 06:05:53,578 INFO L231 Difference]: Finished difference. Result has 254 places, 282 transitions, 4734 flow [2023-08-27 06:05:53,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=4541, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4734, PETRI_PLACES=254, PETRI_TRANSITIONS=282} [2023-08-27 06:05:53,579 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 205 predicate places. [2023-08-27 06:05:53,579 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 282 transitions, 4734 flow [2023-08-27 06:05:53,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 229.65384615384616) internal successors, (5971), 26 states have internal predecessors, (5971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:53,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:53,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:53,585 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 06:05:53,780 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,SelfDestructingSolverStorable42 [2023-08-27 06:05:53,780 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:53,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:53,781 INFO L85 PathProgramCache]: Analyzing trace with hash -74220160, now seen corresponding path program 1 times [2023-08-27 06:05:53,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:53,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244637461] [2023-08-27 06:05:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:05:54,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:54,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244637461] [2023-08-27 06:05:54,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244637461] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:54,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391212740] [2023-08-27 06:05:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:54,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:54,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:05:54,007 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 06:05:54,018 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 06:05:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:54,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-27 06:05:54,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:05:54,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:05:54,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:05:54,240 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:05:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:05:54,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:05:54,341 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:54,341 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-27 06:05:54,346 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:54,346 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-08-27 06:05:54,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-27 06:05:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:05:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391212740] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:05:54,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:05:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 19 [2023-08-27 06:05:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515543908] [2023-08-27 06:05:54,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:05:54,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:05:54,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:05:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=356, Unknown=4, NotChecked=0, Total=420 [2023-08-27 06:05:54,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 674 [2023-08-27 06:05:54,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 282 transitions, 4734 flow. Second operand has 21 states, 21 states have (on average 234.85714285714286) internal successors, (4932), 21 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:54,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:54,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 674 [2023-08-27 06:05:54,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:05:56,753 INFO L124 PetriNetUnfolderBase]: 5185/10056 cut-off events. [2023-08-27 06:05:56,753 INFO L125 PetriNetUnfolderBase]: For 125398/125398 co-relation queries the response was YES. [2023-08-27 06:05:56,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52856 conditions, 10056 events. 5185/10056 cut-off events. For 125398/125398 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 80297 event pairs, 3198 based on Foata normal form. 4/10060 useless extension candidates. Maximal degree in co-relation 52797. Up to 7128 conditions per place. [2023-08-27 06:05:56,839 INFO L140 encePairwiseOnDemand]: 661/674 looper letters, 195 selfloop transitions, 133 changer transitions 0/328 dead transitions. [2023-08-27 06:05:56,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 328 transitions, 5977 flow [2023-08-27 06:05:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 06:05:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 06:05:56,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3115 transitions. [2023-08-27 06:05:56,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35551244008217303 [2023-08-27 06:05:56,842 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3115 transitions. [2023-08-27 06:05:56,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3115 transitions. [2023-08-27 06:05:56,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:05:56,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3115 transitions. [2023-08-27 06:05:56,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 239.6153846153846) internal successors, (3115), 13 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:56,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 674.0) internal successors, (9436), 14 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:56,850 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 674.0) internal successors, (9436), 14 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:56,850 INFO L175 Difference]: Start difference. First operand has 254 places, 282 transitions, 4734 flow. Second operand 13 states and 3115 transitions. [2023-08-27 06:05:56,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 328 transitions, 5977 flow [2023-08-27 06:05:57,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 328 transitions, 5911 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-27 06:05:57,238 INFO L231 Difference]: Finished difference. Result has 259 places, 279 transitions, 4886 flow [2023-08-27 06:05:57,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=4620, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4886, PETRI_PLACES=259, PETRI_TRANSITIONS=279} [2023-08-27 06:05:57,239 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 210 predicate places. [2023-08-27 06:05:57,239 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 279 transitions, 4886 flow [2023-08-27 06:05:57,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 234.85714285714286) internal successors, (4932), 21 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:57,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:05:57,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:05:57,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-27 06:05:57,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:57,441 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:05:57,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:05:57,441 INFO L85 PathProgramCache]: Analyzing trace with hash -25851073, now seen corresponding path program 1 times [2023-08-27 06:05:57,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:05:57,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102542041] [2023-08-27 06:05:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:57,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:05:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:57,619 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 06:05:57,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:05:57,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102542041] [2023-08-27 06:05:57,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102542041] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:57,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067706477] [2023-08-27 06:05:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:05:57,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:05:57,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:05:57,620 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 06:05:57,623 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 06:05:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:05:57,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 06:05:57,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:05:58,149 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:58,150 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 284 treesize of output 233 [2023-08-27 06:05:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:05:58,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:05:58,414 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:05:58,414 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 322 treesize of output 270 [2023-08-27 06:05:58,679 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 06:05:58,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067706477] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:05:58,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:05:58,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2023-08-27 06:05:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910531237] [2023-08-27 06:05:58,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:05:58,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 06:05:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:05:58,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 06:05:58,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:05:58,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 674 [2023-08-27 06:05:58,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 279 transitions, 4886 flow. Second operand has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:05:58,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:05:58,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 674 [2023-08-27 06:05:58,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:06:00,515 INFO L124 PetriNetUnfolderBase]: 5203/10113 cut-off events. [2023-08-27 06:06:00,515 INFO L125 PetriNetUnfolderBase]: For 131433/131433 co-relation queries the response was YES. [2023-08-27 06:06:00,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54236 conditions, 10113 events. 5203/10113 cut-off events. For 131433/131433 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 81167 event pairs, 4440 based on Foata normal form. 3/10116 useless extension candidates. Maximal degree in co-relation 54176. Up to 9866 conditions per place. [2023-08-27 06:06:00,618 INFO L140 encePairwiseOnDemand]: 667/674 looper letters, 290 selfloop transitions, 6 changer transitions 17/313 dead transitions. [2023-08-27 06:06:00,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 313 transitions, 5779 flow [2023-08-27 06:06:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:06:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:06:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1629 transitions. [2023-08-27 06:06:00,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3452734209410767 [2023-08-27 06:06:00,620 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1629 transitions. [2023-08-27 06:06:00,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1629 transitions. [2023-08-27 06:06:00,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:06:00,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1629 transitions. [2023-08-27 06:06:00,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 232.71428571428572) internal successors, (1629), 7 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:00,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:00,623 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:00,623 INFO L175 Difference]: Start difference. First operand has 259 places, 279 transitions, 4886 flow. Second operand 7 states and 1629 transitions. [2023-08-27 06:06:00,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 313 transitions, 5779 flow [2023-08-27 06:06:01,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 313 transitions, 5658 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-27 06:06:01,083 INFO L231 Difference]: Finished difference. Result has 259 places, 269 transitions, 4585 flow [2023-08-27 06:06:01,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=4773, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4585, PETRI_PLACES=259, PETRI_TRANSITIONS=269} [2023-08-27 06:06:01,085 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 210 predicate places. [2023-08-27 06:06:01,085 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 269 transitions, 4585 flow [2023-08-27 06:06:01,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:01,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:06:01,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:06:01,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-27 06:06:01,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-27 06:06:01,288 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:06:01,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:06:01,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1295868267, now seen corresponding path program 1 times [2023-08-27 06:06:01,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:06:01,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149107675] [2023-08-27 06:06:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:01,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:06:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:01,458 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 06:06:01,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:06:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149107675] [2023-08-27 06:06:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149107675] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:06:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964554370] [2023-08-27 06:06:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:01,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:01,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:06:01,459 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 06:06:01,461 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 06:06:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:01,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 06:06:01,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:06:01,894 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:01,895 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 290 treesize of output 239 [2023-08-27 06:06:01,971 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 06:06:01,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:06:02,201 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:02,202 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 322 treesize of output 270 [2023-08-27 06:06:02,443 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 06:06:02,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964554370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:06:02,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:06:02,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 06:06:02,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421111513] [2023-08-27 06:06:02,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:06:02,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:06:02,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:06:02,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:06:02,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:06:02,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 674 [2023-08-27 06:06:02,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 269 transitions, 4585 flow. Second operand has 20 states, 20 states have (on average 225.9) internal successors, (4518), 20 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:02,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:06:02,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 674 [2023-08-27 06:06:02,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:06:04,562 INFO L124 PetriNetUnfolderBase]: 5167/10047 cut-off events. [2023-08-27 06:06:04,563 INFO L125 PetriNetUnfolderBase]: For 129610/129610 co-relation queries the response was YES. [2023-08-27 06:06:04,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53966 conditions, 10047 events. 5167/10047 cut-off events. For 129610/129610 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 80593 event pairs, 4419 based on Foata normal form. 3/10050 useless extension candidates. Maximal degree in co-relation 53905. Up to 9683 conditions per place. [2023-08-27 06:06:04,650 INFO L140 encePairwiseOnDemand]: 666/674 looper letters, 283 selfloop transitions, 22 changer transitions 25/330 dead transitions. [2023-08-27 06:06:04,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 330 transitions, 5575 flow [2023-08-27 06:06:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 06:06:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 06:06:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3014 transitions. [2023-08-27 06:06:04,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3439853914631363 [2023-08-27 06:06:04,653 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3014 transitions. [2023-08-27 06:06:04,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3014 transitions. [2023-08-27 06:06:04,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:06:04,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3014 transitions. [2023-08-27 06:06:04,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 231.84615384615384) internal successors, (3014), 13 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:04,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 674.0) internal successors, (9436), 14 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:04,659 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 674.0) internal successors, (9436), 14 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:04,659 INFO L175 Difference]: Start difference. First operand has 259 places, 269 transitions, 4585 flow. Second operand 13 states and 3014 transitions. [2023-08-27 06:06:04,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 330 transitions, 5575 flow [2023-08-27 06:06:05,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 330 transitions, 5557 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-27 06:06:05,068 INFO L231 Difference]: Finished difference. Result has 267 places, 258 transitions, 4418 flow [2023-08-27 06:06:05,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=4573, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4418, PETRI_PLACES=267, PETRI_TRANSITIONS=258} [2023-08-27 06:06:05,068 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 218 predicate places. [2023-08-27 06:06:05,069 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 258 transitions, 4418 flow [2023-08-27 06:06:05,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 225.9) internal successors, (4518), 20 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:05,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:06:05,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:06:05,076 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 06:06:05,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:05,275 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:06:05,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:06:05,275 INFO L85 PathProgramCache]: Analyzing trace with hash 512242553, now seen corresponding path program 2 times [2023-08-27 06:06:05,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:06:05,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038115604] [2023-08-27 06:06:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:05,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:06:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:05,422 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 06:06:05,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:06:05,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038115604] [2023-08-27 06:06:05,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038115604] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:06:05,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848798108] [2023-08-27 06:06:05,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:06:05,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:05,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:06:05,424 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 06:06:05,425 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 06:06:05,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:06:05,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:06:05,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 06:06:05,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:06:05,719 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:05,719 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 188 treesize of output 137 [2023-08-27 06:06:05,790 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 06:06:05,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:06:05,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848798108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:06:05,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:06:05,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-08-27 06:06:05,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656347936] [2023-08-27 06:06:05,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:06:05,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 06:06:05,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:06:05,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 06:06:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:06:05,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 674 [2023-08-27 06:06:05,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 258 transitions, 4418 flow. Second operand has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:05,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:06:05,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 674 [2023-08-27 06:06:05,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:06:07,592 INFO L124 PetriNetUnfolderBase]: 5113/9921 cut-off events. [2023-08-27 06:06:07,592 INFO L125 PetriNetUnfolderBase]: For 127832/127832 co-relation queries the response was YES. [2023-08-27 06:06:07,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53629 conditions, 9921 events. 5113/9921 cut-off events. For 127832/127832 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 79480 event pairs, 3073 based on Foata normal form. 3/9924 useless extension candidates. Maximal degree in co-relation 53567. Up to 9664 conditions per place. [2023-08-27 06:06:07,697 INFO L140 encePairwiseOnDemand]: 667/674 looper letters, 209 selfloop transitions, 40 changer transitions 22/271 dead transitions. [2023-08-27 06:06:07,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 271 transitions, 4991 flow [2023-08-27 06:06:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:06:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:06:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1846 transitions. [2023-08-27 06:06:07,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34235905044510384 [2023-08-27 06:06:07,699 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1846 transitions. [2023-08-27 06:06:07,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1846 transitions. [2023-08-27 06:06:07,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:06:07,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1846 transitions. [2023-08-27 06:06:07,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 230.75) internal successors, (1846), 8 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:07,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:07,705 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:07,705 INFO L175 Difference]: Start difference. First operand has 267 places, 258 transitions, 4418 flow. Second operand 8 states and 1846 transitions. [2023-08-27 06:06:07,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 271 transitions, 4991 flow [2023-08-27 06:06:08,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 271 transitions, 4881 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-08-27 06:06:08,156 INFO L231 Difference]: Finished difference. Result has 262 places, 247 transitions, 4179 flow [2023-08-27 06:06:08,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=4308, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4179, PETRI_PLACES=262, PETRI_TRANSITIONS=247} [2023-08-27 06:06:08,157 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 213 predicate places. [2023-08-27 06:06:08,157 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 247 transitions, 4179 flow [2023-08-27 06:06:08,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:08,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:06:08,157 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:06:08,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-08-27 06:06:08,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-27 06:06:08,359 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:06:08,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:06:08,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1376697870, now seen corresponding path program 1 times [2023-08-27 06:06:08,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:06:08,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781948884] [2023-08-27 06:06:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:08,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:06:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:06:08,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:06:08,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781948884] [2023-08-27 06:06:08,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781948884] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:06:08,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698641660] [2023-08-27 06:06:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:08,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:08,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:06:08,652 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:06:08,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-27 06:06:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:08,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-27 06:06:08,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:06:08,882 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:06:08,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:08,910 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:06:08,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:08,962 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:06:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:06:08,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:06:09,026 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1748 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1748) c_~a2~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) 4 c_~a2~0.offset)) 4294967296))) is different from false [2023-08-27 06:06:09,081 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:09,081 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 06:06:09,086 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:09,087 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 06:06:09,089 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 06:06:09,093 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 06:06:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-08-27 06:06:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698641660] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:06:09,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:06:09,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 23 [2023-08-27 06:06:09,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542541987] [2023-08-27 06:06:09,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:06:09,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 06:06:09,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:06:09,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 06:06:09,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=4, NotChecked=44, Total=600 [2023-08-27 06:06:09,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:06:09,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 247 transitions, 4179 flow. Second operand has 25 states, 25 states have (on average 232.8) internal successors, (5820), 25 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:09,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:06:09,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:06:09,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:06:11,686 INFO L124 PetriNetUnfolderBase]: 4992/9804 cut-off events. [2023-08-27 06:06:11,686 INFO L125 PetriNetUnfolderBase]: For 129392/129392 co-relation queries the response was YES. [2023-08-27 06:06:11,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52741 conditions, 9804 events. 4992/9804 cut-off events. For 129392/129392 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 79279 event pairs, 2188 based on Foata normal form. 140/9944 useless extension candidates. Maximal degree in co-relation 52681. Up to 2584 conditions per place. [2023-08-27 06:06:11,760 INFO L140 encePairwiseOnDemand]: 661/674 looper letters, 323 selfloop transitions, 94 changer transitions 0/417 dead transitions. [2023-08-27 06:06:11,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 417 transitions, 7298 flow [2023-08-27 06:06:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 06:06:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 06:06:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3157 transitions. [2023-08-27 06:06:11,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36030586624058436 [2023-08-27 06:06:11,763 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3157 transitions. [2023-08-27 06:06:11,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3157 transitions. [2023-08-27 06:06:11,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:06:11,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3157 transitions. [2023-08-27 06:06:11,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 242.84615384615384) internal successors, (3157), 13 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:11,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 674.0) internal successors, (9436), 14 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:11,771 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 674.0) internal successors, (9436), 14 states have internal predecessors, (9436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:11,771 INFO L175 Difference]: Start difference. First operand has 262 places, 247 transitions, 4179 flow. Second operand 13 states and 3157 transitions. [2023-08-27 06:06:11,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 417 transitions, 7298 flow [2023-08-27 06:06:12,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 417 transitions, 6863 flow, removed 35 selfloop flow, removed 9 redundant places. [2023-08-27 06:06:12,144 INFO L231 Difference]: Finished difference. Result has 252 places, 253 transitions, 4336 flow [2023-08-27 06:06:12,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=3980, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4336, PETRI_PLACES=252, PETRI_TRANSITIONS=253} [2023-08-27 06:06:12,145 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 203 predicate places. [2023-08-27 06:06:12,145 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 253 transitions, 4336 flow [2023-08-27 06:06:12,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 232.8) internal successors, (5820), 25 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:12,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:06:12,146 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:06:12,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-27 06:06:12,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-27 06:06:12,346 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:06:12,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:06:12,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1376697905, now seen corresponding path program 2 times [2023-08-27 06:06:12,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:06:12,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874808367] [2023-08-27 06:06:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:12,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:06:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:06:12,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:06:12,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874808367] [2023-08-27 06:06:12,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874808367] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:06:12,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26657982] [2023-08-27 06:06:12,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:06:12,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:12,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:06:12,843 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:06:12,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-27 06:06:13,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:06:13,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:06:13,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 06:06:13,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:06:13,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:13,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:13,030 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 06:06:13,030 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 06:06:13,082 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:06:13,114 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:06:13,115 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:06:13,142 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:06:13,155 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:06:13,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:13,182 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:06:13,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:13,243 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:06:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:06:13,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:06:13,669 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~a1~0.offset 4))) (and (forall ((~a2~0.offset Int) (~a2~0.base Int) (v_ArrVal_1803 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1803))) (let ((.cse0 (select (select .cse1 ~a2~0.base) (+ ~a2~0.offset 4)))) (or (< .cse0 0) (< 0 .cse0) (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) .cse2))))))) (forall ((~a2~0.offset Int) (~a2~0.base Int) (v_ArrVal_1803 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1803))) (let ((.cse3 (select (select .cse4 ~a2~0.base) (+ ~a2~0.offset 4)))) (or (< (+ 4294967295 .cse3) 0) (<= 0 .cse3) (< .cse3 (+ 2147483649 (select (select .cse4 c_~a1~0.base) .cse2))))))))) is different from false [2023-08-27 06:06:13,704 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~a1~0.offset 4))) (and (forall ((v_ArrVal_1802 (Array Int Int)) (~a2~0.offset Int) (~a2~0.base Int) (v_ArrVal_1803 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1802) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1803))) (let ((.cse0 (select (select .cse1 ~a2~0.base) (+ ~a2~0.offset 4)))) (or (< 0 .cse0) (< .cse0 (+ 2147483649 (select (select .cse1 c_~a1~0.base) .cse2))) (< .cse0 0))))) (forall ((v_ArrVal_1802 (Array Int Int)) (~a2~0.offset Int) (~a2~0.base Int) (v_ArrVal_1803 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1802) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1803))) (let ((.cse3 (select (select .cse4 ~a2~0.base) (+ ~a2~0.offset 4)))) (or (<= 0 .cse3) (< .cse3 (+ 2147483649 (select (select .cse4 c_~a1~0.base) .cse2))) (< (+ .cse3 4294967295) 0))))))) is different from false [2023-08-27 06:06:13,919 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:13,920 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 255 treesize of output 172 [2023-08-27 06:06:13,978 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:13,978 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 19147 treesize of output 18014 [2023-08-27 06:06:14,128 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:14,129 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3309 treesize of output 3030 [2023-08-27 06:06:14,189 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:14,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3021 treesize of output 2886 [2023-08-27 06:06:14,255 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:14,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2877 treesize of output 2814 [2023-08-27 06:06:14,313 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:14,314 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2805 treesize of output 2526 [2023-08-27 06:06:14,373 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:14,373 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2517 treesize of output 2454 [2023-08-27 06:06:14,434 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:14,434 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2445 treesize of output 2310 [2023-08-27 06:06:25,821 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 06:06:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-08-27 06:06:26,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26657982] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:06:26,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:06:26,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2023-08-27 06:06:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117400735] [2023-08-27 06:06:26,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:06:26,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 06:06:26,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:06:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 06:06:26,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=822, Unknown=25, NotChecked=118, Total=1056 [2023-08-27 06:06:26,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 674 [2023-08-27 06:06:26,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 253 transitions, 4336 flow. Second operand has 33 states, 33 states have (on average 207.45454545454547) internal successors, (6846), 33 states have internal predecessors, (6846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:26,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:06:26,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 674 [2023-08-27 06:06:26,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:06:30,185 INFO L124 PetriNetUnfolderBase]: 5201/10261 cut-off events. [2023-08-27 06:06:30,185 INFO L125 PetriNetUnfolderBase]: For 123921/123921 co-relation queries the response was YES. [2023-08-27 06:06:30,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53480 conditions, 10261 events. 5201/10261 cut-off events. For 123921/123921 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 84079 event pairs, 2550 based on Foata normal form. 132/10393 useless extension candidates. Maximal degree in co-relation 53420. Up to 1831 conditions per place. [2023-08-27 06:06:30,257 INFO L140 encePairwiseOnDemand]: 663/674 looper letters, 471 selfloop transitions, 78 changer transitions 0/549 dead transitions. [2023-08-27 06:06:30,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 549 transitions, 8484 flow [2023-08-27 06:06:30,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 06:06:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 06:06:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5212 transitions. [2023-08-27 06:06:30,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3222057368941642 [2023-08-27 06:06:30,261 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5212 transitions. [2023-08-27 06:06:30,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5212 transitions. [2023-08-27 06:06:30,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:06:30,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5212 transitions. [2023-08-27 06:06:30,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 217.16666666666666) internal successors, (5212), 24 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:30,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 674.0) internal successors, (16850), 25 states have internal predecessors, (16850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:30,279 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 674.0) internal successors, (16850), 25 states have internal predecessors, (16850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:30,279 INFO L175 Difference]: Start difference. First operand has 252 places, 253 transitions, 4336 flow. Second operand 24 states and 5212 transitions. [2023-08-27 06:06:30,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 549 transitions, 8484 flow [2023-08-27 06:06:30,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 549 transitions, 8138 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-08-27 06:06:30,644 INFO L231 Difference]: Finished difference. Result has 265 places, 268 transitions, 4438 flow [2023-08-27 06:06:30,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=3963, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4438, PETRI_PLACES=265, PETRI_TRANSITIONS=268} [2023-08-27 06:06:30,645 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 216 predicate places. [2023-08-27 06:06:30,645 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 268 transitions, 4438 flow [2023-08-27 06:06:30,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 207.45454545454547) internal successors, (6846), 33 states have internal predecessors, (6846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:30,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:06:30,646 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:06:30,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-27 06:06:30,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-08-27 06:06:30,846 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:06:30,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:06:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1376697906, now seen corresponding path program 1 times [2023-08-27 06:06:30,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:06:30,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071742267] [2023-08-27 06:06:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:06:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:06:31,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:06:31,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071742267] [2023-08-27 06:06:31,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071742267] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:06:31,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118221184] [2023-08-27 06:06:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:31,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:31,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:06:31,201 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:06:31,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-27 06:06:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:31,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-27 06:06:31,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:06:31,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:31,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:31,383 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 06:06:31,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 06:06:31,431 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:06:31,464 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:06:31,464 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:06:31,488 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:06:31,499 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:06:31,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:31,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:06:31,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:31,574 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:06:31,604 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 15 treesize of output 7 [2023-08-27 06:06:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:06:31,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:06:31,647 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1858 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1858) c_~a1~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~a1~0.offset 4)) 2147483648)) is different from false [2023-08-27 06:06:31,652 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1858 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1858) c_~a1~0.base) (+ c_~a1~0.offset 4)) 2147483648)) is different from false [2023-08-27 06:06:31,751 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:31,751 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 06:06:31,759 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:31,759 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 1105 treesize of output 1057 [2023-08-27 06:06:31,766 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 59 treesize of output 55 [2023-08-27 06:06:31,770 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 55 treesize of output 47 [2023-08-27 06:06:31,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2023-08-27 06:06:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-27 06:06:31,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118221184] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:06:31,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:06:31,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-27 06:06:31,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822526846] [2023-08-27 06:06:31,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:06:31,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 06:06:31,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:06:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 06:06:31,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=602, Unknown=14, NotChecked=102, Total=812 [2023-08-27 06:06:31,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 674 [2023-08-27 06:06:31,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 268 transitions, 4438 flow. Second operand has 29 states, 29 states have (on average 228.58620689655172) internal successors, (6629), 29 states have internal predecessors, (6629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:31,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:06:31,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 674 [2023-08-27 06:06:31,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:06:34,484 INFO L124 PetriNetUnfolderBase]: 5538/10712 cut-off events. [2023-08-27 06:06:34,484 INFO L125 PetriNetUnfolderBase]: For 119309/119309 co-relation queries the response was YES. [2023-08-27 06:06:34,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54834 conditions, 10712 events. 5538/10712 cut-off events. For 119309/119309 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 86325 event pairs, 2895 based on Foata normal form. 70/10782 useless extension candidates. Maximal degree in co-relation 54775. Up to 4147 conditions per place. [2023-08-27 06:06:34,575 INFO L140 encePairwiseOnDemand]: 652/674 looper letters, 348 selfloop transitions, 87 changer transitions 0/435 dead transitions. [2023-08-27 06:06:34,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 435 transitions, 7368 flow [2023-08-27 06:06:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 06:06:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 06:06:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2634 transitions. [2023-08-27 06:06:34,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.355273806312382 [2023-08-27 06:06:34,578 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2634 transitions. [2023-08-27 06:06:34,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2634 transitions. [2023-08-27 06:06:34,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:06:34,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2634 transitions. [2023-08-27 06:06:34,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 239.45454545454547) internal successors, (2634), 11 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:34,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 674.0) internal successors, (8088), 12 states have internal predecessors, (8088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:34,583 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 674.0) internal successors, (8088), 12 states have internal predecessors, (8088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:34,583 INFO L175 Difference]: Start difference. First operand has 265 places, 268 transitions, 4438 flow. Second operand 11 states and 2634 transitions. [2023-08-27 06:06:34,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 435 transitions, 7368 flow [2023-08-27 06:06:35,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 435 transitions, 7206 flow, removed 29 selfloop flow, removed 10 redundant places. [2023-08-27 06:06:35,022 INFO L231 Difference]: Finished difference. Result has 266 places, 302 transitions, 5061 flow [2023-08-27 06:06:35,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=4276, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5061, PETRI_PLACES=266, PETRI_TRANSITIONS=302} [2023-08-27 06:06:35,023 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 217 predicate places. [2023-08-27 06:06:35,023 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 302 transitions, 5061 flow [2023-08-27 06:06:35,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 228.58620689655172) internal successors, (6629), 29 states have internal predecessors, (6629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:35,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:06:35,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:06:35,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-27 06:06:35,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-08-27 06:06:35,228 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:06:35,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:06:35,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2120048814, now seen corresponding path program 1 times [2023-08-27 06:06:35,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:06:35,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733621076] [2023-08-27 06:06:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:35,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:06:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:35,652 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 06:06:35,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:06:35,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733621076] [2023-08-27 06:06:35,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733621076] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:06:35,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953578432] [2023-08-27 06:06:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:35,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:35,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:06:35,654 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:06:35,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-27 06:06:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:35,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-27 06:06:35,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:06:35,907 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:06:35,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:35,936 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:06:35,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:35,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:06:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:06:36,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:06:36,244 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:36,245 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 06:06:36,252 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:36,252 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2023-08-27 06:06:36,255 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-08-27 06:06:36,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-27 06:06:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:06:36,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953578432] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:06:36,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:06:36,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 28 [2023-08-27 06:06:36,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211483505] [2023-08-27 06:06:36,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:06:36,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 06:06:36,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:06:36,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 06:06:36,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=776, Unknown=11, NotChecked=0, Total=870 [2023-08-27 06:06:36,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 674 [2023-08-27 06:06:36,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 302 transitions, 5061 flow. Second operand has 30 states, 30 states have (on average 211.56666666666666) internal successors, (6347), 30 states have internal predecessors, (6347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:36,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:06:36,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 674 [2023-08-27 06:06:36,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:06:40,470 INFO L124 PetriNetUnfolderBase]: 5277/10255 cut-off events. [2023-08-27 06:06:40,471 INFO L125 PetriNetUnfolderBase]: For 119798/119798 co-relation queries the response was YES. [2023-08-27 06:06:40,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58524 conditions, 10255 events. 5277/10255 cut-off events. For 119798/119798 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 81856 event pairs, 2112 based on Foata normal form. 202/10457 useless extension candidates. Maximal degree in co-relation 58466. Up to 6408 conditions per place. [2023-08-27 06:06:40,562 INFO L140 encePairwiseOnDemand]: 660/674 looper letters, 484 selfloop transitions, 121 changer transitions 0/605 dead transitions. [2023-08-27 06:06:40,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 605 transitions, 9239 flow [2023-08-27 06:06:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-27 06:06:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-27 06:06:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 7246 transitions. [2023-08-27 06:06:40,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32578005575038216 [2023-08-27 06:06:40,566 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 7246 transitions. [2023-08-27 06:06:40,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 7246 transitions. [2023-08-27 06:06:40,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:06:40,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 7246 transitions. [2023-08-27 06:06:40,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 219.57575757575756) internal successors, (7246), 33 states have internal predecessors, (7246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:40,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 674.0) internal successors, (22916), 34 states have internal predecessors, (22916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:40,582 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 674.0) internal successors, (22916), 34 states have internal predecessors, (22916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:40,582 INFO L175 Difference]: Start difference. First operand has 266 places, 302 transitions, 5061 flow. Second operand 33 states and 7246 transitions. [2023-08-27 06:06:40,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 605 transitions, 9239 flow [2023-08-27 06:06:41,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 605 transitions, 8976 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-27 06:06:41,012 INFO L231 Difference]: Finished difference. Result has 291 places, 312 transitions, 5177 flow [2023-08-27 06:06:41,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=4778, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5177, PETRI_PLACES=291, PETRI_TRANSITIONS=312} [2023-08-27 06:06:41,013 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 242 predicate places. [2023-08-27 06:06:41,013 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 312 transitions, 5177 flow [2023-08-27 06:06:41,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 211.56666666666666) internal successors, (6347), 30 states have internal predecessors, (6347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:41,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:06:41,014 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:06:41,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-08-27 06:06:41,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:41,221 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:06:41,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:06:41,221 INFO L85 PathProgramCache]: Analyzing trace with hash 788676066, now seen corresponding path program 1 times [2023-08-27 06:06:41,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:06:41,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217919393] [2023-08-27 06:06:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:41,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:06:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:06:41,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:06:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217919393] [2023-08-27 06:06:41,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217919393] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:06:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625716120] [2023-08-27 06:06:41,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:41,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:41,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:06:41,657 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:06:41,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-27 06:06:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:41,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-27 06:06:41,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:06:41,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:41,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:41,892 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 06:06:41,893 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 06:06:41,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 06:06:41,993 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:06:41,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:06:42,021 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 06:06:42,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 06:06:42,043 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 06:06:42,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:42,069 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 06:06:42,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:42,096 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 06:06:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:06:42,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:06:42,268 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1972 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1972) c_~a1~0.base) (+ c_~a1~0.offset 8)) 4294967296))) is different from false [2023-08-27 06:06:42,391 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:42,391 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-08-27 06:06:42,398 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:42,399 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 619 treesize of output 595 [2023-08-27 06:06:42,406 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 67 treesize of output 63 [2023-08-27 06:06:42,411 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 134 treesize of output 118 [2023-08-27 06:06:42,416 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-27 06:06:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:06:42,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625716120] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:06:42,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:06:42,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2023-08-27 06:06:42,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852326380] [2023-08-27 06:06:42,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:06:42,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 06:06:42,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:06:42,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 06:06:42,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=990, Unknown=15, NotChecked=64, Total=1190 [2023-08-27 06:06:42,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 674 [2023-08-27 06:06:42,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 312 transitions, 5177 flow. Second operand has 35 states, 35 states have (on average 230.37142857142857) internal successors, (8063), 35 states have internal predecessors, (8063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:42,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:06:42,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 674 [2023-08-27 06:06:42,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:06:46,014 INFO L124 PetriNetUnfolderBase]: 5867/11325 cut-off events. [2023-08-27 06:06:46,014 INFO L125 PetriNetUnfolderBase]: For 131815/131815 co-relation queries the response was YES. [2023-08-27 06:06:46,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66116 conditions, 11325 events. 5867/11325 cut-off events. For 131815/131815 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 92275 event pairs, 2665 based on Foata normal form. 184/11509 useless extension candidates. Maximal degree in co-relation 66058. Up to 7148 conditions per place. [2023-08-27 06:06:46,136 INFO L140 encePairwiseOnDemand]: 664/674 looper letters, 467 selfloop transitions, 42 changer transitions 0/509 dead transitions. [2023-08-27 06:06:46,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 509 transitions, 8206 flow [2023-08-27 06:06:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 06:06:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 06:06:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2897 transitions. [2023-08-27 06:06:46,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35818496538081107 [2023-08-27 06:06:46,139 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2897 transitions. [2023-08-27 06:06:46,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2897 transitions. [2023-08-27 06:06:46,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:06:46,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2897 transitions. [2023-08-27 06:06:46,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.41666666666666) internal successors, (2897), 12 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:46,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 674.0) internal successors, (8762), 13 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:46,146 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 674.0) internal successors, (8762), 13 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:46,146 INFO L175 Difference]: Start difference. First operand has 291 places, 312 transitions, 5177 flow. Second operand 12 states and 2897 transitions. [2023-08-27 06:06:46,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 509 transitions, 8206 flow [2023-08-27 06:06:46,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 509 transitions, 7848 flow, removed 57 selfloop flow, removed 22 redundant places. [2023-08-27 06:06:46,630 INFO L231 Difference]: Finished difference. Result has 282 places, 320 transitions, 5269 flow [2023-08-27 06:06:46,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=4968, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5269, PETRI_PLACES=282, PETRI_TRANSITIONS=320} [2023-08-27 06:06:46,631 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 233 predicate places. [2023-08-27 06:06:46,631 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 320 transitions, 5269 flow [2023-08-27 06:06:46,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 230.37142857142857) internal successors, (8063), 35 states have internal predecessors, (8063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:46,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:06:46,632 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:06:46,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-08-27 06:06:46,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:46,832 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:06:46,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:06:46,833 INFO L85 PathProgramCache]: Analyzing trace with hash 788676063, now seen corresponding path program 1 times [2023-08-27 06:06:46,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:06:46,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263306410] [2023-08-27 06:06:46,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:46,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:06:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:06:47,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:06:47,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263306410] [2023-08-27 06:06:47,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263306410] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:06:47,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934570176] [2023-08-27 06:06:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:47,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:47,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:06:47,248 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:06:47,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-27 06:06:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:47,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-27 06:06:47,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:06:47,571 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:06:47,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:47,606 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:06:47,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:47,637 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:06:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:06:47,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:06:47,775 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2030 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2030) c_~a2~0.base) (+ 8 c_~a2~0.offset))))) is different from false [2023-08-27 06:06:47,822 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:47,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 06:06:47,828 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:06:47,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 06:06:47,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 06:06:47,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 06:06:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:06:47,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934570176] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:06:47,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:06:47,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 33 [2023-08-27 06:06:47,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95891196] [2023-08-27 06:06:47,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:06:47,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 06:06:47,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:06:47,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 06:06:47,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1008, Unknown=2, NotChecked=64, Total=1190 [2023-08-27 06:06:47,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:06:47,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 320 transitions, 5269 flow. Second operand has 35 states, 35 states have (on average 232.34285714285716) internal successors, (8132), 35 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:47,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:06:47,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:06:47,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:06:50,937 INFO L124 PetriNetUnfolderBase]: 5749/11115 cut-off events. [2023-08-27 06:06:50,937 INFO L125 PetriNetUnfolderBase]: For 127558/127558 co-relation queries the response was YES. [2023-08-27 06:06:51,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65029 conditions, 11115 events. 5749/11115 cut-off events. For 127558/127558 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 90152 event pairs, 2560 based on Foata normal form. 92/11207 useless extension candidates. Maximal degree in co-relation 64971. Up to 7000 conditions per place. [2023-08-27 06:06:51,070 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 548 selfloop transitions, 79 changer transitions 0/627 dead transitions. [2023-08-27 06:06:51,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 627 transitions, 10296 flow [2023-08-27 06:06:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 06:06:51,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 06:06:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2908 transitions. [2023-08-27 06:06:51,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35954500494559843 [2023-08-27 06:06:51,072 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2908 transitions. [2023-08-27 06:06:51,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2908 transitions. [2023-08-27 06:06:51,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:06:51,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2908 transitions. [2023-08-27 06:06:51,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 242.33333333333334) internal successors, (2908), 12 states have internal predecessors, (2908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:51,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 674.0) internal successors, (8762), 13 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:51,079 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 674.0) internal successors, (8762), 13 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:51,079 INFO L175 Difference]: Start difference. First operand has 282 places, 320 transitions, 5269 flow. Second operand 12 states and 2908 transitions. [2023-08-27 06:06:51,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 627 transitions, 10296 flow [2023-08-27 06:06:51,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 627 transitions, 10237 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-27 06:06:51,522 INFO L231 Difference]: Finished difference. Result has 286 places, 318 transitions, 5315 flow [2023-08-27 06:06:51,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=5157, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5315, PETRI_PLACES=286, PETRI_TRANSITIONS=318} [2023-08-27 06:06:51,523 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 237 predicate places. [2023-08-27 06:06:51,523 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 318 transitions, 5315 flow [2023-08-27 06:06:51,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 232.34285714285716) internal successors, (8132), 35 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:51,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:06:51,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:06:51,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-08-27 06:06:51,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-08-27 06:06:51,725 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:06:51,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:06:51,725 INFO L85 PathProgramCache]: Analyzing trace with hash 137298001, now seen corresponding path program 2 times [2023-08-27 06:06:51,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:06:51,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103116028] [2023-08-27 06:06:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:51,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:06:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:51,893 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 06:06:51,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:06:51,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103116028] [2023-08-27 06:06:51,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103116028] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:06:51,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468217267] [2023-08-27 06:06:51,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:06:51,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:51,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:06:51,896 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:06:51,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-27 06:06:52,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:06:52,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:06:52,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 06:06:52,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:06:52,208 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 06:06:52,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:06:52,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468217267] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:06:52,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:06:52,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-27 06:06:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618206279] [2023-08-27 06:06:52,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:06:52,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:06:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:06:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:06:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:06:52,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 674 [2023-08-27 06:06:52,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 318 transitions, 5315 flow. Second operand has 7 states, 7 states have (on average 226.28571428571428) internal successors, (1584), 7 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 06:06:52,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:06:52,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 674 [2023-08-27 06:06:52,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:06:54,175 INFO L124 PetriNetUnfolderBase]: 5749/11112 cut-off events. [2023-08-27 06:06:54,176 INFO L125 PetriNetUnfolderBase]: For 125176/125176 co-relation queries the response was YES. [2023-08-27 06:06:54,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65248 conditions, 11112 events. 5749/11112 cut-off events. For 125176/125176 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 89876 event pairs, 3136 based on Foata normal form. 3/11115 useless extension candidates. Maximal degree in co-relation 65190. Up to 10871 conditions per place. [2023-08-27 06:06:54,298 INFO L140 encePairwiseOnDemand]: 667/674 looper letters, 281 selfloop transitions, 25 changer transitions 41/347 dead transitions. [2023-08-27 06:06:54,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 347 transitions, 6290 flow [2023-08-27 06:06:54,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:06:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:06:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1849 transitions. [2023-08-27 06:06:54,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34291543026706234 [2023-08-27 06:06:54,300 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1849 transitions. [2023-08-27 06:06:54,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1849 transitions. [2023-08-27 06:06:54,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:06:54,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1849 transitions. [2023-08-27 06:06:54,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 231.125) internal successors, (1849), 8 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:54,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:54,303 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 674.0) internal successors, (6066), 9 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:06:54,304 INFO L175 Difference]: Start difference. First operand has 286 places, 318 transitions, 5315 flow. Second operand 8 states and 1849 transitions. [2023-08-27 06:06:54,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 347 transitions, 6290 flow [2023-08-27 06:06:54,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 347 transitions, 6140 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-08-27 06:06:54,738 INFO L231 Difference]: Finished difference. Result has 287 places, 304 transitions, 4998 flow [2023-08-27 06:06:54,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=5165, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4998, PETRI_PLACES=287, PETRI_TRANSITIONS=304} [2023-08-27 06:06:54,739 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 238 predicate places. [2023-08-27 06:06:54,739 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 304 transitions, 4998 flow [2023-08-27 06:06:54,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 226.28571428571428) internal successors, (1584), 7 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 06:06:54,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:06:54,740 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:06:54,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-08-27 06:06:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:54,940 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:06:54,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:06:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash 788676064, now seen corresponding path program 1 times [2023-08-27 06:06:54,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:06:54,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026860222] [2023-08-27 06:06:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:06:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:06:55,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:06:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026860222] [2023-08-27 06:06:55,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026860222] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:06:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035626119] [2023-08-27 06:06:55,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:06:55,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:06:55,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:06:55,403 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:06:55,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-08-27 06:06:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:06:55,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:06:55,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:06:55,721 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:06:55,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:55,755 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:06:55,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:06:55,783 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:06:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:06:55,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:07:04,196 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 8 c_~a2~0.offset))) (and (forall ((v_ArrVal_2122 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2122))) (let ((.cse0 (select (select .cse1 ~a1~0.base) (+ ~a1~0.offset 8)))) (or (< 0 .cse0) (<= (select (select .cse1 c_~a2~0.base) .cse2) (+ 2147483647 .cse0)) (< .cse0 0))))) (forall ((v_ArrVal_2122 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2122))) (let ((.cse4 (select (select .cse3 ~a1~0.base) (+ ~a1~0.offset 8)))) (or (<= (select (select .cse3 c_~a2~0.base) .cse2) (+ 2147483647 .cse4)) (< 9223372039002259455 .cse4) (<= .cse4 0))))))) is different from false [2023-08-27 06:07:04,227 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_2122 (Array Int Int)) (v_ArrVal_2121 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2121) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2122))) (let ((.cse0 (select (select .cse1 ~a1~0.base) (+ ~a1~0.offset 8)))) (or (<= .cse0 0) (< 9223372039002259455 .cse0) (<= (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) (+ 2147483647 .cse0)))))) (forall ((v_ArrVal_2122 (Array Int Int)) (v_ArrVal_2121 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2121) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2122))) (let ((.cse3 (select (select .cse4 ~a1~0.base) (+ ~a1~0.offset 8)))) (or (< 0 .cse3) (< .cse3 0) (<= (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse2) (+ 2147483647 .cse3)))))))) is different from false [2023-08-27 06:07:04,238 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:07:04,238 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 134 [2023-08-27 06:07:04,284 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:07:04,284 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1905 treesize of output 1744 [2023-08-27 06:07:04,319 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:07:04,319 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 865 treesize of output 794 [2023-08-27 06:07:04,342 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:07:04,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 785 treesize of output 754 [2023-08-27 06:07:04,366 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:07:04,366 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 745 treesize of output 714 [2023-08-27 06:07:04,390 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:07:04,390 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 705 treesize of output 634 [2023-08-27 06:07:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 3 not checked. [2023-08-27 06:07:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035626119] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:07:16,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:07:16,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 33 [2023-08-27 06:07:16,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898063042] [2023-08-27 06:07:16,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:07:16,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 06:07:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:07:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 06:07:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=944, Unknown=6, NotChecked=126, Total=1190 [2023-08-27 06:07:16,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:07:16,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 304 transitions, 4998 flow. Second operand has 35 states, 35 states have (on average 232.34285714285716) internal successors, (8132), 35 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:16,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:07:16,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:07:16,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:07:19,253 INFO L124 PetriNetUnfolderBase]: 5587/10781 cut-off events. [2023-08-27 06:07:19,253 INFO L125 PetriNetUnfolderBase]: For 118511/118511 co-relation queries the response was YES. [2023-08-27 06:07:19,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61359 conditions, 10781 events. 5587/10781 cut-off events. For 118511/118511 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 87134 event pairs, 2636 based on Foata normal form. 92/10873 useless extension candidates. Maximal degree in co-relation 61303. Up to 6792 conditions per place. [2023-08-27 06:07:19,544 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 537 selfloop transitions, 73 changer transitions 0/610 dead transitions. [2023-08-27 06:07:19,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 610 transitions, 9993 flow [2023-08-27 06:07:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 06:07:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 06:07:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2906 transitions. [2023-08-27 06:07:19,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359297725024728 [2023-08-27 06:07:19,546 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2906 transitions. [2023-08-27 06:07:19,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2906 transitions. [2023-08-27 06:07:19,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:07:19,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2906 transitions. [2023-08-27 06:07:19,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 242.16666666666666) internal successors, (2906), 12 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:19,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 674.0) internal successors, (8762), 13 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:19,553 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 674.0) internal successors, (8762), 13 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:19,553 INFO L175 Difference]: Start difference. First operand has 287 places, 304 transitions, 4998 flow. Second operand 12 states and 2906 transitions. [2023-08-27 06:07:19,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 610 transitions, 9993 flow [2023-08-27 06:07:19,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 610 transitions, 9279 flow, removed 17 selfloop flow, removed 16 redundant places. [2023-08-27 06:07:19,912 INFO L231 Difference]: Finished difference. Result has 269 places, 302 transitions, 4594 flow [2023-08-27 06:07:19,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4594, PETRI_PLACES=269, PETRI_TRANSITIONS=302} [2023-08-27 06:07:19,913 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 220 predicate places. [2023-08-27 06:07:19,913 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 302 transitions, 4594 flow [2023-08-27 06:07:19,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 232.34285714285716) internal successors, (8132), 35 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:19,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:07:19,914 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:07:19,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-08-27 06:07:20,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-08-27 06:07:20,122 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:07:20,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:07:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash -805842797, now seen corresponding path program 3 times [2023-08-27 06:07:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:07:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111049090] [2023-08-27 06:07:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:07:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:07:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:07:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:07:20,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:07:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111049090] [2023-08-27 06:07:20,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111049090] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:07:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508335783] [2023-08-27 06:07:20,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:07:20,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:07:20,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:07:20,500 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:07:20,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-08-27 06:07:20,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:07:20,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:07:20,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-27 06:07:20,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:07:20,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:07:20,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:07:20,768 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 06:07:20,768 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 06:07:20,861 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:07:20,894 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:07:20,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:07:20,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:07:20,972 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:07:21,015 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:07:21,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:07:21,056 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:07:21,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:07:21,091 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:07:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:07:21,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:07:21,493 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:07:21,494 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 06:07:21,500 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:07:21,500 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 139 treesize of output 133 [2023-08-27 06:07:21,504 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 106 [2023-08-27 06:07:21,508 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 106 treesize of output 98 [2023-08-27 06:07:21,514 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2023-08-27 06:07:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:07:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508335783] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:07:21,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:07:21,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 37 [2023-08-27 06:07:21,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627521263] [2023-08-27 06:07:21,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:07:21,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-27 06:07:21,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:07:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-27 06:07:21,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1299, Unknown=8, NotChecked=0, Total=1482 [2023-08-27 06:07:21,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 674 [2023-08-27 06:07:21,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 302 transitions, 4594 flow. Second operand has 39 states, 39 states have (on average 209.2051282051282) internal successors, (8159), 39 states have internal predecessors, (8159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:21,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:07:21,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 674 [2023-08-27 06:07:21,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:07:27,405 INFO L124 PetriNetUnfolderBase]: 9223/17195 cut-off events. [2023-08-27 06:07:27,405 INFO L125 PetriNetUnfolderBase]: For 142491/142491 co-relation queries the response was YES. [2023-08-27 06:07:27,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104611 conditions, 17195 events. 9223/17195 cut-off events. For 142491/142491 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 143960 event pairs, 1929 based on Foata normal form. 460/17655 useless extension candidates. Maximal degree in co-relation 104560. Up to 11268 conditions per place. [2023-08-27 06:07:27,646 INFO L140 encePairwiseOnDemand]: 662/674 looper letters, 925 selfloop transitions, 143 changer transitions 0/1068 dead transitions. [2023-08-27 06:07:27,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 1068 transitions, 14733 flow [2023-08-27 06:07:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-27 06:07:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-27 06:07:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 7498 transitions. [2023-08-27 06:07:27,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271949729446675 [2023-08-27 06:07:27,651 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 7498 transitions. [2023-08-27 06:07:27,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 7498 transitions. [2023-08-27 06:07:27,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:07:27,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 7498 transitions. [2023-08-27 06:07:27,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 220.52941176470588) internal successors, (7498), 34 states have internal predecessors, (7498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:27,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 674.0) internal successors, (23590), 35 states have internal predecessors, (23590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:27,669 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 674.0) internal successors, (23590), 35 states have internal predecessors, (23590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:27,669 INFO L175 Difference]: Start difference. First operand has 269 places, 302 transitions, 4594 flow. Second operand 34 states and 7498 transitions. [2023-08-27 06:07:27,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 1068 transitions, 14733 flow [2023-08-27 06:07:28,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 1068 transitions, 14482 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-08-27 06:07:28,170 INFO L231 Difference]: Finished difference. Result has 299 places, 360 transitions, 5873 flow [2023-08-27 06:07:28,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=4379, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5873, PETRI_PLACES=299, PETRI_TRANSITIONS=360} [2023-08-27 06:07:28,171 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 250 predicate places. [2023-08-27 06:07:28,171 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 360 transitions, 5873 flow [2023-08-27 06:07:28,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 209.2051282051282) internal successors, (8159), 39 states have internal predecessors, (8159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:28,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:07:28,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:07:28,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-08-27 06:07:28,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:07:28,380 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:07:28,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:07:28,380 INFO L85 PathProgramCache]: Analyzing trace with hash 51595313, now seen corresponding path program 1 times [2023-08-27 06:07:28,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:07:28,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930872886] [2023-08-27 06:07:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:07:28,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:07:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:07:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:07:28,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:07:28,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930872886] [2023-08-27 06:07:28,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930872886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:07:28,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180940097] [2023-08-27 06:07:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:07:28,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:07:28,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:07:28,471 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:07:28,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-08-27 06:07:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:07:28,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 06:07:28,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:07:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:07:28,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:07:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:07:28,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180940097] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:07:28,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:07:28,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-08-27 06:07:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681598259] [2023-08-27 06:07:28,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:07:28,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:07:28,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:07:28,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:07:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:07:28,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:07:28,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 360 transitions, 5873 flow. Second operand has 7 states, 7 states have (on average 233.42857142857142) internal successors, (1634), 7 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:28,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:07:28,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:07:28,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:07:32,032 INFO L124 PetriNetUnfolderBase]: 8656/16267 cut-off events. [2023-08-27 06:07:32,033 INFO L125 PetriNetUnfolderBase]: For 159838/159838 co-relation queries the response was YES. [2023-08-27 06:07:32,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102579 conditions, 16267 events. 8656/16267 cut-off events. For 159838/159838 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 135108 event pairs, 3466 based on Foata normal form. 353/16620 useless extension candidates. Maximal degree in co-relation 102522. Up to 12339 conditions per place. [2023-08-27 06:07:32,281 INFO L140 encePairwiseOnDemand]: 666/674 looper letters, 358 selfloop transitions, 62 changer transitions 0/420 dead transitions. [2023-08-27 06:07:32,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 420 transitions, 7765 flow [2023-08-27 06:07:32,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:07:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:07:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1668 transitions. [2023-08-27 06:07:32,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3535396354387452 [2023-08-27 06:07:32,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1668 transitions. [2023-08-27 06:07:32,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1668 transitions. [2023-08-27 06:07:32,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:07:32,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1668 transitions. [2023-08-27 06:07:32,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.28571428571428) internal successors, (1668), 7 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:32,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:32,286 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:32,287 INFO L175 Difference]: Start difference. First operand has 299 places, 360 transitions, 5873 flow. Second operand 7 states and 1668 transitions. [2023-08-27 06:07:32,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 420 transitions, 7765 flow [2023-08-27 06:07:32,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 420 transitions, 7523 flow, removed 22 selfloop flow, removed 16 redundant places. [2023-08-27 06:07:32,854 INFO L231 Difference]: Finished difference. Result has 291 places, 360 transitions, 5892 flow [2023-08-27 06:07:32,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=5655, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5892, PETRI_PLACES=291, PETRI_TRANSITIONS=360} [2023-08-27 06:07:32,855 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 242 predicate places. [2023-08-27 06:07:32,855 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 360 transitions, 5892 flow [2023-08-27 06:07:32,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 233.42857142857142) internal successors, (1634), 7 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:32,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:07:32,855 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:07:32,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-08-27 06:07:33,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:07:33,056 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:07:33,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:07:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1320789042, now seen corresponding path program 2 times [2023-08-27 06:07:33,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:07:33,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781831709] [2023-08-27 06:07:33,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:07:33,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:07:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:07:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:07:33,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:07:33,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781831709] [2023-08-27 06:07:33,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781831709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:07:33,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662525419] [2023-08-27 06:07:33,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:07:33,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:07:33,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:07:33,177 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:07:33,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-08-27 06:07:33,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:07:33,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:07:33,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 06:07:33,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:07:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:07:33,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:07:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:07:33,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662525419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:07:33,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:07:33,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-27 06:07:33,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729984559] [2023-08-27 06:07:33,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:07:33,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 06:07:33,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:07:33,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 06:07:33,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-08-27 06:07:33,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 674 [2023-08-27 06:07:33,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 360 transitions, 5892 flow. Second operand has 24 states, 24 states have (on average 235.41666666666666) internal successors, (5650), 24 states have internal predecessors, (5650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:33,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:07:33,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 674 [2023-08-27 06:07:33,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:07:38,585 INFO L124 PetriNetUnfolderBase]: 11524/21907 cut-off events. [2023-08-27 06:07:38,585 INFO L125 PetriNetUnfolderBase]: For 208001/208001 co-relation queries the response was YES. [2023-08-27 06:07:38,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134490 conditions, 21907 events. 11524/21907 cut-off events. For 208001/208001 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 194174 event pairs, 4811 based on Foata normal form. 968/22875 useless extension candidates. Maximal degree in co-relation 134434. Up to 14159 conditions per place. [2023-08-27 06:07:38,800 INFO L140 encePairwiseOnDemand]: 662/674 looper letters, 593 selfloop transitions, 99 changer transitions 0/692 dead transitions. [2023-08-27 06:07:38,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 692 transitions, 11514 flow [2023-08-27 06:07:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:07:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:07:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3415 transitions. [2023-08-27 06:07:38,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619118270453582 [2023-08-27 06:07:38,802 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3415 transitions. [2023-08-27 06:07:38,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3415 transitions. [2023-08-27 06:07:38,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:07:38,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3415 transitions. [2023-08-27 06:07:38,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 243.92857142857142) internal successors, (3415), 14 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:38,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 674.0) internal successors, (10110), 15 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:38,809 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 674.0) internal successors, (10110), 15 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:38,809 INFO L175 Difference]: Start difference. First operand has 291 places, 360 transitions, 5892 flow. Second operand 14 states and 3415 transitions. [2023-08-27 06:07:38,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 692 transitions, 11514 flow [2023-08-27 06:07:40,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 692 transitions, 11314 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-08-27 06:07:40,046 INFO L231 Difference]: Finished difference. Result has 305 places, 400 transitions, 6970 flow [2023-08-27 06:07:40,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=5810, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6970, PETRI_PLACES=305, PETRI_TRANSITIONS=400} [2023-08-27 06:07:40,046 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 256 predicate places. [2023-08-27 06:07:40,046 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 400 transitions, 6970 flow [2023-08-27 06:07:40,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 235.41666666666666) internal successors, (5650), 24 states have internal predecessors, (5650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:40,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:07:40,047 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:07:40,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-08-27 06:07:40,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-08-27 06:07:40,248 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:07:40,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:07:40,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1913793952, now seen corresponding path program 2 times [2023-08-27 06:07:40,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:07:40,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711074858] [2023-08-27 06:07:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:07:40,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:07:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:07:40,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:07:40,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:07:40,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711074858] [2023-08-27 06:07:40,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711074858] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:07:40,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181944628] [2023-08-27 06:07:40,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:07:40,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:07:40,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:07:40,341 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:07:40,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-08-27 06:07:40,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:07:40,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:07:40,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 06:07:40,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:07:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:07:40,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:07:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:07:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181944628] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:07:40,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:07:40,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2023-08-27 06:07:40,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280560528] [2023-08-27 06:07:40,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:07:40,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 06:07:40,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:07:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 06:07:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2023-08-27 06:07:40,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 674 [2023-08-27 06:07:40,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 400 transitions, 6970 flow. Second operand has 22 states, 22 states have (on average 232.77272727272728) internal successors, (5121), 22 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:40,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:07:40,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 674 [2023-08-27 06:07:40,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:07:45,112 INFO L124 PetriNetUnfolderBase]: 9978/18791 cut-off events. [2023-08-27 06:07:45,113 INFO L125 PetriNetUnfolderBase]: For 195073/195073 co-relation queries the response was YES. [2023-08-27 06:07:45,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120759 conditions, 18791 events. 9978/18791 cut-off events. For 195073/195073 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 156601 event pairs, 6275 based on Foata normal form. 64/18855 useless extension candidates. Maximal degree in co-relation 120697. Up to 13065 conditions per place. [2023-08-27 06:07:45,329 INFO L140 encePairwiseOnDemand]: 666/674 looper letters, 477 selfloop transitions, 97 changer transitions 0/574 dead transitions. [2023-08-27 06:07:45,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 574 transitions, 9612 flow [2023-08-27 06:07:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 06:07:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 06:07:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 5978 transitions. [2023-08-27 06:07:45,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35477744807121664 [2023-08-27 06:07:45,334 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 5978 transitions. [2023-08-27 06:07:45,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 5978 transitions. [2023-08-27 06:07:45,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:07:45,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 5978 transitions. [2023-08-27 06:07:45,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 239.12) internal successors, (5978), 25 states have internal predecessors, (5978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:45,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 674.0) internal successors, (17524), 26 states have internal predecessors, (17524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:45,348 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 674.0) internal successors, (17524), 26 states have internal predecessors, (17524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:45,348 INFO L175 Difference]: Start difference. First operand has 305 places, 400 transitions, 6970 flow. Second operand 25 states and 5978 transitions. [2023-08-27 06:07:45,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 574 transitions, 9612 flow [2023-08-27 06:07:46,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 574 transitions, 9411 flow, removed 6 selfloop flow, removed 14 redundant places. [2023-08-27 06:07:46,155 INFO L231 Difference]: Finished difference. Result has 311 places, 378 transitions, 6743 flow [2023-08-27 06:07:46,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=6126, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6743, PETRI_PLACES=311, PETRI_TRANSITIONS=378} [2023-08-27 06:07:46,156 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 262 predicate places. [2023-08-27 06:07:46,156 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 378 transitions, 6743 flow [2023-08-27 06:07:46,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 232.77272727272728) internal successors, (5121), 22 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:46,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:07:46,157 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:07:46,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-08-27 06:07:46,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-08-27 06:07:46,357 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:07:46,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:07:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash 112082310, now seen corresponding path program 3 times [2023-08-27 06:07:46,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:07:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907372379] [2023-08-27 06:07:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:07:46,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:07:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:07:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 06:07:46,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:07:46,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907372379] [2023-08-27 06:07:46,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907372379] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:07:46,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685782627] [2023-08-27 06:07:46,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:07:46,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:07:46,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:07:46,475 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:07:46,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-08-27 06:07:46,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:07:46,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:07:46,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 06:07:46,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:07:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 06:07:46,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:07:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 06:07:47,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685782627] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:07:47,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:07:47,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-08-27 06:07:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366441705] [2023-08-27 06:07:47,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:07:47,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 06:07:47,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:07:47,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 06:07:47,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-08-27 06:07:47,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 674 [2023-08-27 06:07:47,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 378 transitions, 6743 flow. Second operand has 24 states, 24 states have (on average 235.41666666666666) internal successors, (5650), 24 states have internal predecessors, (5650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:47,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:07:47,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 674 [2023-08-27 06:07:47,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:07:50,822 INFO L124 PetriNetUnfolderBase]: 8010/15605 cut-off events. [2023-08-27 06:07:50,822 INFO L125 PetriNetUnfolderBase]: For 153774/153774 co-relation queries the response was YES. [2023-08-27 06:07:50,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88643 conditions, 15605 events. 8010/15605 cut-off events. For 153774/153774 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 134446 event pairs, 2742 based on Foata normal form. 440/16041 useless extension candidates. Maximal degree in co-relation 88582. Up to 9779 conditions per place. [2023-08-27 06:07:50,986 INFO L140 encePairwiseOnDemand]: 665/674 looper letters, 548 selfloop transitions, 102 changer transitions 0/650 dead transitions. [2023-08-27 06:07:50,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 650 transitions, 11221 flow [2023-08-27 06:07:50,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 06:07:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 06:07:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2707 transitions. [2023-08-27 06:07:50,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3651200431615862 [2023-08-27 06:07:50,988 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2707 transitions. [2023-08-27 06:07:50,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2707 transitions. [2023-08-27 06:07:50,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:07:50,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2707 transitions. [2023-08-27 06:07:50,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 246.0909090909091) internal successors, (2707), 11 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:50,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 674.0) internal successors, (8088), 12 states have internal predecessors, (8088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:50,993 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 674.0) internal successors, (8088), 12 states have internal predecessors, (8088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:50,993 INFO L175 Difference]: Start difference. First operand has 311 places, 378 transitions, 6743 flow. Second operand 11 states and 2707 transitions. [2023-08-27 06:07:50,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 650 transitions, 11221 flow [2023-08-27 06:07:52,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 650 transitions, 11006 flow, removed 4 selfloop flow, removed 18 redundant places. [2023-08-27 06:07:52,079 INFO L231 Difference]: Finished difference. Result has 302 places, 360 transitions, 6429 flow [2023-08-27 06:07:52,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=5876, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6429, PETRI_PLACES=302, PETRI_TRANSITIONS=360} [2023-08-27 06:07:52,080 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 253 predicate places. [2023-08-27 06:07:52,080 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 360 transitions, 6429 flow [2023-08-27 06:07:52,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 235.41666666666666) internal successors, (5650), 24 states have internal predecessors, (5650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:52,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:07:52,081 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:07:52,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-08-27 06:07:52,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-08-27 06:07:52,286 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:07:52,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:07:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1588791478, now seen corresponding path program 4 times [2023-08-27 06:07:52,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:07:52,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442220856] [2023-08-27 06:07:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:07:52,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:07:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:07:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:07:53,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:07:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442220856] [2023-08-27 06:07:53,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442220856] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:07:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601362679] [2023-08-27 06:07:53,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:07:53,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:07:53,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:07:53,072 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:07:53,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-08-27 06:07:53,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:07:53,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:07:53,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-27 06:07:53,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:07:53,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:07:53,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:07:53,319 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 06:07:53,319 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 06:07:53,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:07:53,476 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 06:07:53,476 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-08-27 06:07:53,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:07:53,526 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:07:53,536 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:07:53,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:07:53,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:07:53,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:07:53,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:07:53,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 06:07:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:07:53,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:07:53,951 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2451 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2451) c_~a1~0.base) (+ c_~a1~0.offset 12))))) is different from false [2023-08-27 06:07:54,113 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:07:54,114 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-08-27 06:07:54,123 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:07:54,124 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 311 treesize of output 299 [2023-08-27 06:07:54,134 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 70 treesize of output 66 [2023-08-27 06:07:54,141 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 134 treesize of output 126 [2023-08-27 06:07:54,146 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 126 treesize of output 110 [2023-08-27 06:07:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:07:54,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601362679] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:07:54,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:07:54,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2023-08-27 06:07:54,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980971858] [2023-08-27 06:07:54,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:07:54,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-27 06:07:54,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:07:54,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-27 06:07:54,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1415, Unknown=19, NotChecked=76, Total=1640 [2023-08-27 06:07:54,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 674 [2023-08-27 06:07:54,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 360 transitions, 6429 flow. Second operand has 41 states, 41 states have (on average 209.3170731707317) internal successors, (8582), 41 states have internal predecessors, (8582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:07:54,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:07:54,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 674 [2023-08-27 06:07:54,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:08:02,932 INFO L124 PetriNetUnfolderBase]: 12233/23573 cut-off events. [2023-08-27 06:08:02,932 INFO L125 PetriNetUnfolderBase]: For 209543/209543 co-relation queries the response was YES. [2023-08-27 06:08:03,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142290 conditions, 23573 events. 12233/23573 cut-off events. For 209543/209543 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 213906 event pairs, 905 based on Foata normal form. 440/24007 useless extension candidates. Maximal degree in co-relation 142230. Up to 15049 conditions per place. [2023-08-27 06:08:03,240 INFO L140 encePairwiseOnDemand]: 664/674 looper letters, 1043 selfloop transitions, 162 changer transitions 0/1205 dead transitions. [2023-08-27 06:08:03,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 1205 transitions, 18949 flow [2023-08-27 06:08:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-27 06:08:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-27 06:08:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5987 transitions. [2023-08-27 06:08:03,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3289921969447192 [2023-08-27 06:08:03,245 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5987 transitions. [2023-08-27 06:08:03,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5987 transitions. [2023-08-27 06:08:03,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:08:03,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5987 transitions. [2023-08-27 06:08:03,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 221.74074074074073) internal successors, (5987), 27 states have internal predecessors, (5987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:03,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 674.0) internal successors, (18872), 28 states have internal predecessors, (18872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:03,259 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 674.0) internal successors, (18872), 28 states have internal predecessors, (18872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:03,260 INFO L175 Difference]: Start difference. First operand has 302 places, 360 transitions, 6429 flow. Second operand 27 states and 5987 transitions. [2023-08-27 06:08:03,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 1205 transitions, 18949 flow [2023-08-27 06:08:06,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 1205 transitions, 18851 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-27 06:08:06,116 INFO L231 Difference]: Finished difference. Result has 326 places, 408 transitions, 7763 flow [2023-08-27 06:08:06,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=6356, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7763, PETRI_PLACES=326, PETRI_TRANSITIONS=408} [2023-08-27 06:08:06,117 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 277 predicate places. [2023-08-27 06:08:06,117 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 408 transitions, 7763 flow [2023-08-27 06:08:06,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 209.3170731707317) internal successors, (8582), 41 states have internal predecessors, (8582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:06,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:08:06,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:08:06,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-08-27 06:08:06,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:08:06,319 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:08:06,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:08:06,319 INFO L85 PathProgramCache]: Analyzing trace with hash -367797071, now seen corresponding path program 1 times [2023-08-27 06:08:06,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:08:06,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447695869] [2023-08-27 06:08:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:08:06,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:08:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:08:06,686 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 06:08:06,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:08:06,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447695869] [2023-08-27 06:08:06,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447695869] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:08:06,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593863157] [2023-08-27 06:08:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:08:06,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:08:06,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:08:06,688 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:08:06,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-08-27 06:08:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:08:06,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:08:06,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:08:06,979 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:08:07,006 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 06:08:07,063 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 06:08:07,133 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 06:08:07,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:08:10,519 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:08:10,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 37 [2023-08-27 06:08:10,527 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:08:10,527 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 598 treesize of output 546 [2023-08-27 06:08:10,539 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:08:10,539 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 262 treesize of output 255 [2023-08-27 06:08:10,549 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:08:10,550 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 246 treesize of output 223 [2023-08-27 06:08:10,667 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:08:10,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 37 [2023-08-27 06:08:10,677 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:08:10,677 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 294 treesize of output 274 [2023-08-27 06:08:10,687 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:08:10,688 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 262 treesize of output 255 [2023-08-27 06:08:10,700 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:08:10,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 246 treesize of output 223 [2023-08-27 06:08:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:08:10,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593863157] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:08:10,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:08:10,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2023-08-27 06:08:10,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919922372] [2023-08-27 06:08:10,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:08:10,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 06:08:10,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:08:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 06:08:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=522, Unknown=35, NotChecked=0, Total=702 [2023-08-27 06:08:10,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 674 [2023-08-27 06:08:10,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 408 transitions, 7763 flow. Second operand has 27 states, 27 states have (on average 199.62962962962962) internal successors, (5390), 27 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:10,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:08:10,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 674 [2023-08-27 06:08:10,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:08:20,999 INFO L124 PetriNetUnfolderBase]: 20808/38900 cut-off events. [2023-08-27 06:08:21,000 INFO L125 PetriNetUnfolderBase]: For 401720/401720 co-relation queries the response was YES. [2023-08-27 06:08:21,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243547 conditions, 38900 events. 20808/38900 cut-off events. For 401720/401720 co-relation queries the response was YES. Maximal size of possible extension queue 1460. Compared 367732 event pairs, 6956 based on Foata normal form. 456/39350 useless extension candidates. Maximal degree in co-relation 243482. Up to 24892 conditions per place. [2023-08-27 06:08:21,661 INFO L140 encePairwiseOnDemand]: 655/674 looper letters, 685 selfloop transitions, 306 changer transitions 0/991 dead transitions. [2023-08-27 06:08:21,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 991 transitions, 21069 flow [2023-08-27 06:08:21,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 06:08:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 06:08:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3935 transitions. [2023-08-27 06:08:21,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30727783851319695 [2023-08-27 06:08:21,664 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3935 transitions. [2023-08-27 06:08:21,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3935 transitions. [2023-08-27 06:08:21,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:08:21,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3935 transitions. [2023-08-27 06:08:21,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 207.10526315789474) internal successors, (3935), 19 states have internal predecessors, (3935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:21,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 674.0) internal successors, (13480), 20 states have internal predecessors, (13480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:21,673 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 674.0) internal successors, (13480), 20 states have internal predecessors, (13480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:21,673 INFO L175 Difference]: Start difference. First operand has 326 places, 408 transitions, 7763 flow. Second operand 19 states and 3935 transitions. [2023-08-27 06:08:21,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 991 transitions, 21069 flow [2023-08-27 06:08:27,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 991 transitions, 19405 flow, removed 317 selfloop flow, removed 14 redundant places. [2023-08-27 06:08:27,622 INFO L231 Difference]: Finished difference. Result has 339 places, 556 transitions, 11674 flow [2023-08-27 06:08:27,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=7275, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11674, PETRI_PLACES=339, PETRI_TRANSITIONS=556} [2023-08-27 06:08:27,623 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 290 predicate places. [2023-08-27 06:08:27,623 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 556 transitions, 11674 flow [2023-08-27 06:08:27,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 199.62962962962962) internal successors, (5390), 27 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:27,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:08:27,624 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:08:27,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-08-27 06:08:27,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2023-08-27 06:08:27,825 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:08:27,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:08:27,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1588791481, now seen corresponding path program 2 times [2023-08-27 06:08:27,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:08:27,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862642107] [2023-08-27 06:08:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:08:27,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:08:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:08:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:08:28,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:08:28,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862642107] [2023-08-27 06:08:28,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862642107] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:08:28,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200231731] [2023-08-27 06:08:28,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:08:28,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:08:28,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:08:28,474 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:08:28,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-08-27 06:08:28,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:08:28,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:08:28,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 06:08:28,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:08:28,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 06:08:28,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:08:28,870 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 06:08:28,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:08:28,902 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 06:08:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 06:08:29,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:08:29,234 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2559 (Array Int Int)) (v_ArrVal_2558 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2558) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2559) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483648))) is different from false [2023-08-27 06:08:29,239 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:08:29,240 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 06:08:29,246 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:08:29,246 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 06:08:29,250 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 06:08:29,252 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 06:08:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 4 not checked. [2023-08-27 06:08:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200231731] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:08:29,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:08:29,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 39 [2023-08-27 06:08:29,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651318666] [2023-08-27 06:08:29,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:08:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-27 06:08:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:08:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-27 06:08:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1445, Unknown=5, NotChecked=76, Total=1640 [2023-08-27 06:08:29,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 674 [2023-08-27 06:08:29,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 556 transitions, 11674 flow. Second operand has 41 states, 41 states have (on average 211.29268292682926) internal successors, (8663), 41 states have internal predecessors, (8663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:29,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:08:29,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 674 [2023-08-27 06:08:29,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:08:44,114 INFO L124 PetriNetUnfolderBase]: 20370/38212 cut-off events. [2023-08-27 06:08:44,114 INFO L125 PetriNetUnfolderBase]: For 459350/459350 co-relation queries the response was YES. [2023-08-27 06:08:44,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249424 conditions, 38212 events. 20370/38212 cut-off events. For 459350/459350 co-relation queries the response was YES. Maximal size of possible extension queue 1352. Compared 360687 event pairs, 6077 based on Foata normal form. 432/38638 useless extension candidates. Maximal degree in co-relation 249354. Up to 24388 conditions per place. [2023-08-27 06:08:44,929 INFO L140 encePairwiseOnDemand]: 663/674 looper letters, 1587 selfloop transitions, 236 changer transitions 0/1823 dead transitions. [2023-08-27 06:08:44,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1823 transitions, 30952 flow [2023-08-27 06:08:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-27 06:08:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-27 06:08:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10792 transitions. [2023-08-27 06:08:44,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.326772845636771 [2023-08-27 06:08:44,936 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10792 transitions. [2023-08-27 06:08:44,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10792 transitions. [2023-08-27 06:08:44,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:08:44,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10792 transitions. [2023-08-27 06:08:44,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 220.24489795918367) internal successors, (10792), 49 states have internal predecessors, (10792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:44,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 674.0) internal successors, (33700), 50 states have internal predecessors, (33700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:44,962 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 674.0) internal successors, (33700), 50 states have internal predecessors, (33700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:44,962 INFO L175 Difference]: Start difference. First operand has 339 places, 556 transitions, 11674 flow. Second operand 49 states and 10792 transitions. [2023-08-27 06:08:44,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1823 transitions, 30952 flow [2023-08-27 06:08:51,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 1823 transitions, 30047 flow, removed 231 selfloop flow, removed 5 redundant places. [2023-08-27 06:08:51,254 INFO L231 Difference]: Finished difference. Result has 382 places, 560 transitions, 11678 flow [2023-08-27 06:08:51,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=10901, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=11678, PETRI_PLACES=382, PETRI_TRANSITIONS=560} [2023-08-27 06:08:51,254 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 333 predicate places. [2023-08-27 06:08:51,254 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 560 transitions, 11678 flow [2023-08-27 06:08:51,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 211.29268292682926) internal successors, (8663), 41 states have internal predecessors, (8663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:51,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:08:51,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:08:51,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-08-27 06:08:51,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:08:51,456 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:08:51,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:08:51,457 INFO L85 PathProgramCache]: Analyzing trace with hash 817272689, now seen corresponding path program 2 times [2023-08-27 06:08:51,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:08:51,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124181488] [2023-08-27 06:08:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:08:51,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:08:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:08:51,786 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 06:08:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:08:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124181488] [2023-08-27 06:08:51,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124181488] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:08:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815956753] [2023-08-27 06:08:51,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:08:51,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:08:51,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:08:51,788 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:08:51,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-08-27 06:08:52,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:08:52,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:08:52,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 06:08:52,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:08:52,293 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 06:08:52,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:08:52,773 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 06:08:52,773 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 20 treesize of output 4 [2023-08-27 06:08:52,778 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 06:08:52,778 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 20 treesize of output 4 [2023-08-27 06:08:52,814 INFO L322 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-08-27 06:08:52,814 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 66 [2023-08-27 06:08:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:08:52,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815956753] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:08:52,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:08:52,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 21 [2023-08-27 06:08:52,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70077779] [2023-08-27 06:08:52,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:08:52,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 06:08:52,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:08:52,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 06:08:52,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-08-27 06:08:52,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 674 [2023-08-27 06:08:52,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 560 transitions, 11678 flow. Second operand has 10 states, 10 states have (on average 211.9) internal successors, (2119), 10 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:08:52,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:08:52,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 674 [2023-08-27 06:08:52,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:09:03,520 INFO L124 PetriNetUnfolderBase]: 20850/39367 cut-off events. [2023-08-27 06:09:03,521 INFO L125 PetriNetUnfolderBase]: For 444198/444198 co-relation queries the response was YES. [2023-08-27 06:09:04,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256366 conditions, 39367 events. 20850/39367 cut-off events. For 444198/444198 co-relation queries the response was YES. Maximal size of possible extension queue 1407. Compared 374482 event pairs, 12150 based on Foata normal form. 40/39401 useless extension candidates. Maximal degree in co-relation 256297. Up to 25588 conditions per place. [2023-08-27 06:09:04,139 INFO L140 encePairwiseOnDemand]: 659/674 looper letters, 780 selfloop transitions, 293 changer transitions 0/1073 dead transitions. [2023-08-27 06:09:04,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1073 transitions, 23980 flow [2023-08-27 06:09:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:09:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:09:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3709 transitions. [2023-08-27 06:09:04,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.323703962297085 [2023-08-27 06:09:04,142 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3709 transitions. [2023-08-27 06:09:04,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3709 transitions. [2023-08-27 06:09:04,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:09:04,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3709 transitions. [2023-08-27 06:09:04,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 218.1764705882353) internal successors, (3709), 17 states have internal predecessors, (3709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:04,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 674.0) internal successors, (12132), 18 states have internal predecessors, (12132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:04,150 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 674.0) internal successors, (12132), 18 states have internal predecessors, (12132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:04,150 INFO L175 Difference]: Start difference. First operand has 382 places, 560 transitions, 11678 flow. Second operand 17 states and 3709 transitions. [2023-08-27 06:09:04,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 1073 transitions, 23980 flow [2023-08-27 06:09:09,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 1073 transitions, 21635 flow, removed 77 selfloop flow, removed 22 redundant places. [2023-08-27 06:09:09,591 INFO L231 Difference]: Finished difference. Result has 383 places, 708 transitions, 14450 flow [2023-08-27 06:09:09,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=10769, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=14450, PETRI_PLACES=383, PETRI_TRANSITIONS=708} [2023-08-27 06:09:09,592 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 334 predicate places. [2023-08-27 06:09:09,592 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 708 transitions, 14450 flow [2023-08-27 06:09:09,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.9) internal successors, (2119), 10 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:09,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:09:09,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:09:09,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-08-27 06:09:09,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:09:09,793 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:09:09,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:09:09,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1420234775, now seen corresponding path program 3 times [2023-08-27 06:09:09,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:09:09,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306557453] [2023-08-27 06:09:09,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:09:09,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:09:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:09:10,217 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 06:09:10,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:09:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306557453] [2023-08-27 06:09:10,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306557453] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:09:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751030712] [2023-08-27 06:09:10,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:09:10,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:09:10,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:09:10,218 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:09:10,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-08-27 06:09:10,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:09:10,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:09:10,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 06:09:10,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:09:10,625 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 06:09:10,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:09:10,988 INFO L322 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-08-27 06:09:10,989 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 74 [2023-08-27 06:09:11,006 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 06:09:11,007 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 20 treesize of output 4 [2023-08-27 06:09:11,014 INFO L322 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2023-08-27 06:09:11,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 1 [2023-08-27 06:09:11,020 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 06:09:11,020 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 20 treesize of output 4 [2023-08-27 06:09:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:09:11,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751030712] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:09:11,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:09:11,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2023-08-27 06:09:11,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091674072] [2023-08-27 06:09:11,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:09:11,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:09:11,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:09:11,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:09:11,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-08-27 06:09:11,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 674 [2023-08-27 06:09:11,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 708 transitions, 14450 flow. Second operand has 21 states, 21 states have (on average 207.8095238095238) internal successors, (4364), 21 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:11,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:09:11,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 674 [2023-08-27 06:09:11,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:09:23,787 INFO L124 PetriNetUnfolderBase]: 22162/42191 cut-off events. [2023-08-27 06:09:23,788 INFO L125 PetriNetUnfolderBase]: For 500454/500454 co-relation queries the response was YES. [2023-08-27 06:09:24,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287794 conditions, 42191 events. 22162/42191 cut-off events. For 500454/500454 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 408825 event pairs, 12122 based on Foata normal form. 456/42641 useless extension candidates. Maximal degree in co-relation 287722. Up to 26602 conditions per place. [2023-08-27 06:09:24,659 INFO L140 encePairwiseOnDemand]: 657/674 looper letters, 488 selfloop transitions, 457 changer transitions 0/945 dead transitions. [2023-08-27 06:09:24,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 945 transitions, 20165 flow [2023-08-27 06:09:24,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 06:09:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 06:09:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3223 transitions. [2023-08-27 06:09:24,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3187932739861523 [2023-08-27 06:09:24,663 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3223 transitions. [2023-08-27 06:09:24,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3223 transitions. [2023-08-27 06:09:24,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:09:24,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3223 transitions. [2023-08-27 06:09:24,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 214.86666666666667) internal successors, (3223), 15 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:24,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 674.0) internal successors, (10784), 16 states have internal predecessors, (10784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:24,671 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 674.0) internal successors, (10784), 16 states have internal predecessors, (10784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:24,671 INFO L175 Difference]: Start difference. First operand has 383 places, 708 transitions, 14450 flow. Second operand 15 states and 3223 transitions. [2023-08-27 06:09:24,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 945 transitions, 20165 flow [2023-08-27 06:09:32,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 945 transitions, 19687 flow, removed 163 selfloop flow, removed 6 redundant places. [2023-08-27 06:09:32,128 INFO L231 Difference]: Finished difference. Result has 395 places, 828 transitions, 18128 flow [2023-08-27 06:09:32,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=14021, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=377, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=18128, PETRI_PLACES=395, PETRI_TRANSITIONS=828} [2023-08-27 06:09:32,129 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 346 predicate places. [2023-08-27 06:09:32,129 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 828 transitions, 18128 flow [2023-08-27 06:09:32,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 207.8095238095238) internal successors, (4364), 21 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:32,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:09:32,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:09:32,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-08-27 06:09:32,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:09:32,330 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:09:32,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:09:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash -333163511, now seen corresponding path program 4 times [2023-08-27 06:09:32,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:09:32,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147208948] [2023-08-27 06:09:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:09:32,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:09:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:09:32,753 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 06:09:32,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:09:32,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147208948] [2023-08-27 06:09:32,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147208948] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:09:32,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187632057] [2023-08-27 06:09:32,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:09:32,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:09:32,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:09:32,755 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:09:32,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-08-27 06:09:32,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:09:32,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:09:32,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 06:09:32,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:09:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:09:33,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:09:33,755 INFO L322 Elim1Store]: treesize reduction 87, result has 71.3 percent of original size [2023-08-27 06:09:33,756 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 195 treesize of output 283 [2023-08-27 06:09:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:09:42,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187632057] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:09:42,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:09:42,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6] total 19 [2023-08-27 06:09:42,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276789567] [2023-08-27 06:09:42,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:09:42,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:09:42,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:09:42,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:09:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:09:42,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 674 [2023-08-27 06:09:42,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 828 transitions, 18128 flow. Second operand has 19 states, 19 states have (on average 208.26315789473685) internal successors, (3957), 19 states have internal predecessors, (3957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:42,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:09:42,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 674 [2023-08-27 06:09:42,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:09:57,202 INFO L124 PetriNetUnfolderBase]: 22762/43247 cut-off events. [2023-08-27 06:09:57,202 INFO L125 PetriNetUnfolderBase]: For 590914/590914 co-relation queries the response was YES. [2023-08-27 06:09:57,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307679 conditions, 43247 events. 22762/43247 cut-off events. For 590914/590914 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 420111 event pairs, 12731 based on Foata normal form. 456/43697 useless extension candidates. Maximal degree in co-relation 307605. Up to 27318 conditions per place. [2023-08-27 06:09:57,917 INFO L140 encePairwiseOnDemand]: 657/674 looper letters, 679 selfloop transitions, 353 changer transitions 0/1032 dead transitions. [2023-08-27 06:09:57,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 1032 transitions, 23235 flow [2023-08-27 06:09:57,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 06:09:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 06:09:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3437 transitions. [2023-08-27 06:09:57,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3187129080118694 [2023-08-27 06:09:57,919 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3437 transitions. [2023-08-27 06:09:57,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3437 transitions. [2023-08-27 06:09:57,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:09:57,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3437 transitions. [2023-08-27 06:09:57,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 214.8125) internal successors, (3437), 16 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:57,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 674.0) internal successors, (11458), 17 states have internal predecessors, (11458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:57,926 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 674.0) internal successors, (11458), 17 states have internal predecessors, (11458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:09:57,926 INFO L175 Difference]: Start difference. First operand has 395 places, 828 transitions, 18128 flow. Second operand 16 states and 3437 transitions. [2023-08-27 06:09:57,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 1032 transitions, 23235 flow [2023-08-27 06:10:07,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 1032 transitions, 22704 flow, removed 210 selfloop flow, removed 6 redundant places. [2023-08-27 06:10:07,204 INFO L231 Difference]: Finished difference. Result has 405 places, 848 transitions, 18870 flow [2023-08-27 06:10:07,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=17677, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=18870, PETRI_PLACES=405, PETRI_TRANSITIONS=848} [2023-08-27 06:10:07,205 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 356 predicate places. [2023-08-27 06:10:07,205 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 848 transitions, 18870 flow [2023-08-27 06:10:07,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 208.26315789473685) internal successors, (3957), 19 states have internal predecessors, (3957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:10:07,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:10:07,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:10:07,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-08-27 06:10:07,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:10:07,413 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:10:07,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:10:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1312309817, now seen corresponding path program 5 times [2023-08-27 06:10:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:10:07,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786491734] [2023-08-27 06:10:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:10:07,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:10:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:10:07,720 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 06:10:07,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:10:07,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786491734] [2023-08-27 06:10:07,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786491734] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:10:07,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919000516] [2023-08-27 06:10:07,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:10:07,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:10:07,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:10:07,721 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:10:07,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-08-27 06:10:07,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:10:07,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:10:07,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 06:10:07,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:10:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:10:08,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:10:08,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919000516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:10:08,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:10:08,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2023-08-27 06:10:08,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175914557] [2023-08-27 06:10:08,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:10:08,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 06:10:08,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:10:08,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 06:10:08,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:10:08,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 674 [2023-08-27 06:10:08,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 848 transitions, 18870 flow. Second operand has 9 states, 9 states have (on average 228.11111111111111) internal successors, (2053), 9 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:10:08,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:10:08,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 674 [2023-08-27 06:10:08,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:10:21,667 INFO L124 PetriNetUnfolderBase]: 22802/43367 cut-off events. [2023-08-27 06:10:21,668 INFO L125 PetriNetUnfolderBase]: For 608515/608515 co-relation queries the response was YES. [2023-08-27 06:10:22,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316325 conditions, 43367 events. 22802/43367 cut-off events. For 608515/608515 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 421553 event pairs, 14440 based on Foata normal form. 40/43401 useless extension candidates. Maximal degree in co-relation 316250. Up to 31562 conditions per place. [2023-08-27 06:10:22,548 INFO L140 encePairwiseOnDemand]: 666/674 looper letters, 645 selfloop transitions, 289 changer transitions 0/934 dead transitions. [2023-08-27 06:10:22,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 934 transitions, 21995 flow [2023-08-27 06:10:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:10:22,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:10:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1658 transitions. [2023-08-27 06:10:22,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35142009325985585 [2023-08-27 06:10:22,549 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1658 transitions. [2023-08-27 06:10:22,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1658 transitions. [2023-08-27 06:10:22,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:10:22,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1658 transitions. [2023-08-27 06:10:22,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 236.85714285714286) internal successors, (1658), 7 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:10:22,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:10:22,749 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 674.0) internal successors, (5392), 8 states have internal predecessors, (5392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:10:22,749 INFO L175 Difference]: Start difference. First operand has 405 places, 848 transitions, 18870 flow. Second operand 7 states and 1658 transitions. [2023-08-27 06:10:22,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 934 transitions, 21995 flow [2023-08-27 06:10:32,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 934 transitions, 21418 flow, removed 80 selfloop flow, removed 12 redundant places. [2023-08-27 06:10:32,136 INFO L231 Difference]: Finished difference. Result has 402 places, 869 transitions, 19625 flow [2023-08-27 06:10:32,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=18319, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19625, PETRI_PLACES=402, PETRI_TRANSITIONS=869} [2023-08-27 06:10:32,137 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 353 predicate places. [2023-08-27 06:10:32,137 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 869 transitions, 19625 flow [2023-08-27 06:10:32,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 228.11111111111111) internal successors, (2053), 9 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:10:32,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:10:32,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:10:32,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-08-27 06:10:32,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-08-27 06:10:32,338 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:10:32,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:10:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1834678669, now seen corresponding path program 6 times [2023-08-27 06:10:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:10:32,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688115077] [2023-08-27 06:10:32,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:10:32,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:10:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:10:32,705 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 06:10:32,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:10:32,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688115077] [2023-08-27 06:10:32,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688115077] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:10:32,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853962712] [2023-08-27 06:10:32,706 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:10:32,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:10:32,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:10:32,707 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:10:32,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-08-27 06:10:32,938 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 06:10:32,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:10:32,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 06:10:32,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:10:33,182 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 06:10:33,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:10:33,473 INFO L322 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-08-27 06:10:33,473 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 74 [2023-08-27 06:10:33,491 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 06:10:33,491 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 20 treesize of output 4 [2023-08-27 06:10:33,499 INFO L322 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2023-08-27 06:10:33,499 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 1 [2023-08-27 06:10:33,505 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 06:10:33,505 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 20 treesize of output 4 [2023-08-27 06:10:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:10:33,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853962712] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:10:33,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:10:33,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 21 [2023-08-27 06:10:33,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441236458] [2023-08-27 06:10:33,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:10:33,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 06:10:33,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:10:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 06:10:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-08-27 06:10:33,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 674 [2023-08-27 06:10:33,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 869 transitions, 19625 flow. Second operand has 10 states, 10 states have (on average 211.9) internal successors, (2119), 10 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:10:33,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:10:33,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 674 [2023-08-27 06:10:33,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:10:47,724 INFO L124 PetriNetUnfolderBase]: 22618/42615 cut-off events. [2023-08-27 06:10:47,725 INFO L125 PetriNetUnfolderBase]: For 641913/641913 co-relation queries the response was YES. [2023-08-27 06:10:48,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316950 conditions, 42615 events. 22618/42615 cut-off events. For 641913/641913 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 409230 event pairs, 12133 based on Foata normal form. 40/42649 useless extension candidates. Maximal degree in co-relation 316872. Up to 27544 conditions per place. [2023-08-27 06:10:48,511 INFO L140 encePairwiseOnDemand]: 659/674 looper letters, 688 selfloop transitions, 455 changer transitions 0/1143 dead transitions. [2023-08-27 06:10:48,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 1143 transitions, 27113 flow [2023-08-27 06:10:48,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:10:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:10:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3701 transitions. [2023-08-27 06:10:48,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3230057601675685 [2023-08-27 06:10:48,513 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3701 transitions. [2023-08-27 06:10:48,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3701 transitions. [2023-08-27 06:10:48,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:10:48,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3701 transitions. [2023-08-27 06:10:48,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 217.7058823529412) internal successors, (3701), 17 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:10:48,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 674.0) internal successors, (12132), 18 states have internal predecessors, (12132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:10:48,521 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 674.0) internal successors, (12132), 18 states have internal predecessors, (12132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:10:48,521 INFO L175 Difference]: Start difference. First operand has 402 places, 869 transitions, 19625 flow. Second operand 17 states and 3701 transitions. [2023-08-27 06:10:48,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 1143 transitions, 27113 flow [2023-08-27 06:10:59,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 1143 transitions, 26181 flow, removed 264 selfloop flow, removed 3 redundant places. [2023-08-27 06:10:59,039 INFO L231 Difference]: Finished difference. Result has 416 places, 926 transitions, 21072 flow [2023-08-27 06:10:59,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=18694, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=390, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=21072, PETRI_PLACES=416, PETRI_TRANSITIONS=926} [2023-08-27 06:10:59,040 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 367 predicate places. [2023-08-27 06:10:59,040 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 926 transitions, 21072 flow [2023-08-27 06:10:59,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.9) internal successors, (2119), 10 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:10:59,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:10:59,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:10:59,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-08-27 06:10:59,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-08-27 06:10:59,243 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:10:59,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:10:59,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1628872253, now seen corresponding path program 7 times [2023-08-27 06:10:59,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:10:59,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810572519] [2023-08-27 06:10:59,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:10:59,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:10:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:10:59,560 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 06:10:59,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:10:59,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810572519] [2023-08-27 06:10:59,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810572519] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:10:59,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209812869] [2023-08-27 06:10:59,561 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:10:59,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:10:59,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:10:59,565 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:10:59,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-08-27 06:10:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:10:59,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 06:10:59,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:10:59,933 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 06:10:59,963 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 06:10:59,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 06:11:00,043 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 06:11:00,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:11:00,607 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:11:00,607 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 37 [2023-08-27 06:11:00,615 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:11:00,615 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 598 treesize of output 546 [2023-08-27 06:11:00,625 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:11:00,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 262 treesize of output 255 [2023-08-27 06:11:00,634 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:11:00,634 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 246 treesize of output 223 [2023-08-27 06:11:00,700 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:11:00,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 37 [2023-08-27 06:11:00,709 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:11:00,709 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 598 treesize of output 546 [2023-08-27 06:11:00,736 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:11:00,737 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 262 treesize of output 255 [2023-08-27 06:11:00,746 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:11:00,747 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 246 treesize of output 223 [2023-08-27 06:11:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:11:00,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209812869] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:11:00,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:11:00,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25 [2023-08-27 06:11:00,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546600423] [2023-08-27 06:11:00,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:11:00,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 06:11:00,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:11:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 06:11:00,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=500, Unknown=13, NotChecked=0, Total=650 [2023-08-27 06:11:00,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 674 [2023-08-27 06:11:00,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 926 transitions, 21072 flow. Second operand has 26 states, 26 states have (on average 199.53846153846155) internal successors, (5188), 26 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:11:00,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:11:00,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 674 [2023-08-27 06:11:00,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:11:16,042 INFO L124 PetriNetUnfolderBase]: 23912/45065 cut-off events. [2023-08-27 06:11:16,043 INFO L125 PetriNetUnfolderBase]: For 678583/678583 co-relation queries the response was YES. [2023-08-27 06:11:16,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340459 conditions, 45065 events. 23912/45065 cut-off events. For 678583/678583 co-relation queries the response was YES. Maximal size of possible extension queue 1585. Compared 435546 event pairs, 9003 based on Foata normal form. 456/45515 useless extension candidates. Maximal degree in co-relation 340380. Up to 28376 conditions per place. [2023-08-27 06:11:16,925 INFO L140 encePairwiseOnDemand]: 654/674 looper letters, 449 selfloop transitions, 904 changer transitions 0/1353 dead transitions. [2023-08-27 06:11:16,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 1353 transitions, 32430 flow [2023-08-27 06:11:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:11:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:11:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2886 transitions. [2023-08-27 06:11:16,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30584993641373465 [2023-08-27 06:11:16,928 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2886 transitions. [2023-08-27 06:11:16,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2886 transitions. [2023-08-27 06:11:16,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:11:16,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2886 transitions. [2023-08-27 06:11:16,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 206.14285714285714) internal successors, (2886), 14 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:11:16,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 674.0) internal successors, (10110), 15 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:11:16,935 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 674.0) internal successors, (10110), 15 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:11:16,935 INFO L175 Difference]: Start difference. First operand has 416 places, 926 transitions, 21072 flow. Second operand 14 states and 2886 transitions. [2023-08-27 06:11:16,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 1353 transitions, 32430 flow [2023-08-27 06:11:29,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 1353 transitions, 31592 flow, removed 84 selfloop flow, removed 10 redundant places. [2023-08-27 06:11:29,481 INFO L231 Difference]: Finished difference. Result has 426 places, 1243 transitions, 31308 flow [2023-08-27 06:11:29,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=20417, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=926, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=588, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=31308, PETRI_PLACES=426, PETRI_TRANSITIONS=1243} [2023-08-27 06:11:29,483 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 377 predicate places. [2023-08-27 06:11:29,483 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 1243 transitions, 31308 flow [2023-08-27 06:11:29,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 199.53846153846155) internal successors, (5188), 26 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:11:29,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:11:29,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:11:29,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-08-27 06:11:29,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-08-27 06:11:29,690 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:11:29,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:11:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1535068029, now seen corresponding path program 8 times [2023-08-27 06:11:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:11:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512744050] [2023-08-27 06:11:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:11:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:11:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:11:30,149 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 06:11:30,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:11:30,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512744050] [2023-08-27 06:11:30,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512744050] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:11:30,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173802138] [2023-08-27 06:11:30,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:11:30,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:11:30,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:11:30,153 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:11:30,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-08-27 06:11:30,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:11:30,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:11:30,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 06:11:30,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:11:30,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:11:30,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:11:30,710 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 06:11:30,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:11:31,171 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~a2~0.offset))) (let ((.cse5 (forall ((v_ArrVal_2830 (Array Int Int)) (~a2~0.base Int)) (not (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2830) ~a2~0.base) .cse1)))))) (and (forall ((v_ArrVal_2830 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2830))) (let ((.cse2 (select (select .cse4 c_~a1~0.base) c_~a1~0.offset))) (or (forall ((~a2~0.base Int)) (let ((.cse0 (select .cse4 ~a2~0.base))) (let ((.cse3 (select .cse0 c_~a2~0.offset))) (or (not (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select .cse0 .cse1))) (= .cse2 .cse3) (< (+ .cse3 2147483648) .cse2) (< (+ .cse2 2147483647) .cse3))))) (<= .cse2 0) (< 9223372039002259455 .cse2))))) (or (< 0 c_~n1~0) .cse5) (forall ((v_ArrVal_2830 (Array Int Int))) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2830))) (let ((.cse6 (select (select .cse9 c_~a1~0.base) c_~a1~0.offset))) (or (< (+ .cse6 4294967295) 0) (forall ((~a2~0.base Int)) (let ((.cse7 (select .cse9 ~a2~0.base))) (let ((.cse8 (select .cse7 c_~a2~0.offset))) (or (not (= |c_thread1Thread1of1ForFork1_#t~mem1#1| (select .cse7 .cse1))) (= .cse6 .cse8) (< (+ .cse8 2147483648) .cse6) (< (+ .cse6 2147483647) .cse8))))) (< 0 .cse6))))) (or .cse5 (< 0 c_~n2~0))))) is different from false [2023-08-27 06:11:31,194 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:11:31,194 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 48 treesize of output 36 [2023-08-27 06:11:31,214 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-27 06:11:31,276 INFO L322 Elim1Store]: treesize reduction 15, result has 78.3 percent of original size [2023-08-27 06:11:31,277 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 302 treesize of output 275 [2023-08-27 06:11:31,308 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:11:31,308 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 206 treesize of output 200 [2023-08-27 06:11:31,737 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 06:11:31,744 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 06:11:31,745 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2023-08-27 06:11:31,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:11:31,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173802138] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:11:31,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:11:31,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 11] total 29 [2023-08-27 06:11:31,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601727361] [2023-08-27 06:11:31,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:11:31,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 06:11:31,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:11:31,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 06:11:31,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=688, Unknown=1, NotChecked=54, Total=870 [2023-08-27 06:11:31,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 674 [2023-08-27 06:11:31,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 1243 transitions, 31308 flow. Second operand has 11 states, 11 states have (on average 203.72727272727272) internal successors, (2241), 11 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:11:31,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:11:31,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 674 [2023-08-27 06:11:31,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:12:00,232 INFO L124 PetriNetUnfolderBase]: 25350/47846 cut-off events. [2023-08-27 06:12:00,232 INFO L125 PetriNetUnfolderBase]: For 911357/911357 co-relation queries the response was YES. [2023-08-27 06:12:01,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393482 conditions, 47846 events. 25350/47846 cut-off events. For 911357/911357 co-relation queries the response was YES. Maximal size of possible extension queue 1700. Compared 466120 event pairs, 11810 based on Foata normal form. 456/48296 useless extension candidates. Maximal degree in co-relation 393397. Up to 30074 conditions per place. [2023-08-27 06:12:01,191 INFO L140 encePairwiseOnDemand]: 654/674 looper letters, 792 selfloop transitions, 823 changer transitions 0/1615 dead transitions. [2023-08-27 06:12:01,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 1615 transitions, 42655 flow [2023-08-27 06:12:01,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:12:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:12:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3574 transitions. [2023-08-27 06:12:01,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31192180136149417 [2023-08-27 06:12:01,196 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3574 transitions. [2023-08-27 06:12:01,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3574 transitions. [2023-08-27 06:12:01,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:12:01,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3574 transitions. [2023-08-27 06:12:01,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 210.23529411764707) internal successors, (3574), 17 states have internal predecessors, (3574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:12:01,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 674.0) internal successors, (12132), 18 states have internal predecessors, (12132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:12:01,205 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 674.0) internal successors, (12132), 18 states have internal predecessors, (12132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:12:01,205 INFO L175 Difference]: Start difference. First operand has 426 places, 1243 transitions, 31308 flow. Second operand 17 states and 3574 transitions. [2023-08-27 06:12:01,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 1615 transitions, 42655 flow [2023-08-27 06:12:17,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1615 transitions, 42127 flow, removed 222 selfloop flow, removed 5 redundant places. [2023-08-27 06:12:17,420 INFO L231 Difference]: Finished difference. Result has 442 places, 1479 transitions, 40036 flow [2023-08-27 06:12:17,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=30850, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=587, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=40036, PETRI_PLACES=442, PETRI_TRANSITIONS=1479} [2023-08-27 06:12:17,422 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 393 predicate places. [2023-08-27 06:12:17,422 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 1479 transitions, 40036 flow [2023-08-27 06:12:17,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.72727272727272) internal successors, (2241), 11 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:12:17,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:12:17,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:12:17,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-08-27 06:12:17,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:12:17,623 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:12:17,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:12:17,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1645590735, now seen corresponding path program 9 times [2023-08-27 06:12:17,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:12:17,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032667454] [2023-08-27 06:12:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:12:17,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:12:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:12:18,040 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 06:12:18,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:12:18,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032667454] [2023-08-27 06:12:18,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032667454] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:12:18,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920502213] [2023-08-27 06:12:18,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:12:18,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:12:18,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:12:18,045 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:12:18,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-08-27 06:12:18,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:12:18,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:12:18,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 06:12:18,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:12:18,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:12:18,497 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 06:12:18,546 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 06:12:18,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:12:18,995 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~a2~0.offset))) (let ((.cse5 (forall ((v_ArrVal_2869 (Array Int Int)) (~a2~0.base Int)) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2869) ~a2~0.base) .cse3) |c_thread1Thread1of1ForFork1_#t~mem1#1|))))) (and (forall ((v_ArrVal_2869 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2869))) (let ((.cse0 (select (select .cse4 c_~a1~0.base) c_~a1~0.offset))) (or (<= .cse0 0) (forall ((~a2~0.base Int)) (let ((.cse2 (select .cse4 ~a2~0.base))) (let ((.cse1 (select .cse2 c_~a2~0.offset))) (or (< (+ .cse1 2147483648) .cse0) (not (= (select .cse2 .cse3) |c_thread1Thread1of1ForFork1_#t~mem1#1|)) (< (+ .cse0 2147483647) .cse1) (= .cse0 .cse1))))) (< 9223372039002259455 .cse0))))) (or (< 0 c_~n2~0) .cse5) (forall ((v_ArrVal_2869 (Array Int Int))) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2869))) (let ((.cse7 (select (select .cse9 c_~a1~0.base) c_~a1~0.offset))) (or (forall ((~a2~0.base Int)) (let ((.cse8 (select .cse9 ~a2~0.base))) (let ((.cse6 (select .cse8 c_~a2~0.offset))) (or (< (+ .cse6 2147483648) .cse7) (not (= (select .cse8 .cse3) |c_thread1Thread1of1ForFork1_#t~mem1#1|)) (< (+ .cse7 2147483647) .cse6) (= .cse7 .cse6))))) (< 0 .cse7) (< (+ .cse7 4294967295) 0))))) (or (< 0 c_~n1~0) .cse5)))) is different from false [2023-08-27 06:12:19,054 INFO L322 Elim1Store]: treesize reduction 15, result has 78.3 percent of original size [2023-08-27 06:12:19,054 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 306 treesize of output 279 [2023-08-27 06:12:19,077 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:12:19,077 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 208 treesize of output 202 [2023-08-27 06:12:19,437 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 06:12:19,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2023-08-27 06:12:19,445 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-27 06:12:19,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2023-08-27 06:12:19,448 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 06:12:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:12:19,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920502213] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:12:19,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:12:19,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 27 [2023-08-27 06:12:19,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678804410] [2023-08-27 06:12:19,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:12:19,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 06:12:19,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:12:19,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 06:12:19,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=600, Unknown=1, NotChecked=50, Total=756 [2023-08-27 06:12:19,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 674 [2023-08-27 06:12:19,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 1479 transitions, 40036 flow. Second operand has 28 states, 28 states have (on average 203.53571428571428) internal successors, (5699), 28 states have internal predecessors, (5699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:12:19,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:12:19,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 674 [2023-08-27 06:12:19,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:12:46,486 INFO L124 PetriNetUnfolderBase]: 30935/58263 cut-off events. [2023-08-27 06:12:46,486 INFO L125 PetriNetUnfolderBase]: For 1332586/1332586 co-relation queries the response was YES. [2023-08-27 06:12:47,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529062 conditions, 58263 events. 30935/58263 cut-off events. For 1332586/1332586 co-relation queries the response was YES. Maximal size of possible extension queue 2110. Compared 581297 event pairs, 7186 based on Foata normal form. 492/58749 useless extension candidates. Maximal degree in co-relation 528972. Up to 36767 conditions per place. [2023-08-27 06:12:47,945 INFO L140 encePairwiseOnDemand]: 656/674 looper letters, 1269 selfloop transitions, 589 changer transitions 0/1858 dead transitions. [2023-08-27 06:12:47,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 1858 transitions, 52240 flow [2023-08-27 06:12:47,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 06:12:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 06:12:47,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3171 transitions. [2023-08-27 06:12:47,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3136498516320475 [2023-08-27 06:12:47,948 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3171 transitions. [2023-08-27 06:12:47,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3171 transitions. [2023-08-27 06:12:47,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:12:47,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3171 transitions. [2023-08-27 06:12:47,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 211.4) internal successors, (3171), 15 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:12:47,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 674.0) internal successors, (10784), 16 states have internal predecessors, (10784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:12:47,955 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 674.0) internal successors, (10784), 16 states have internal predecessors, (10784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:12:47,955 INFO L175 Difference]: Start difference. First operand has 442 places, 1479 transitions, 40036 flow. Second operand 15 states and 3171 transitions. [2023-08-27 06:12:47,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 1858 transitions, 52240 flow [2023-08-27 06:13:23,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 1858 transitions, 51597 flow, removed 151 selfloop flow, removed 6 redundant places. [2023-08-27 06:13:23,307 INFO L231 Difference]: Finished difference. Result has 452 places, 1583 transitions, 44633 flow [2023-08-27 06:13:23,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=674, PETRI_DIFFERENCE_MINUEND_FLOW=39441, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=930, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=44633, PETRI_PLACES=452, PETRI_TRANSITIONS=1583} [2023-08-27 06:13:23,309 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 403 predicate places. [2023-08-27 06:13:23,309 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 1583 transitions, 44633 flow [2023-08-27 06:13:23,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 203.53571428571428) internal successors, (5699), 28 states have internal predecessors, (5699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:13:23,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:13:23,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:13:23,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-08-27 06:13:23,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:13:23,511 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-08-27 06:13:23,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:13:23,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2072359781, now seen corresponding path program 10 times [2023-08-27 06:13:23,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:13:23,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529282639] [2023-08-27 06:13:23,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:13:23,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:13:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:13:23,983 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 06:13:23,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:13:23,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529282639] [2023-08-27 06:13:23,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529282639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:13:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072058194] [2023-08-27 06:13:23,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:13:23,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:13:23,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:13:23,985 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:13:23,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-08-27 06:13:24,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:13:24,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:13:24,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 06:13:24,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:13:24,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:13:24,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:13:24,604 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 06:13:24,604 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2023-08-27 06:13:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:13:24,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:13:25,231 INFO L322 Elim1Store]: treesize reduction 11, result has 84.1 percent of original size [2023-08-27 06:13:25,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 540 treesize of output 469 [2023-08-27 06:13:25,258 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:13:25,258 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 407 treesize of output 388 [2023-08-27 06:13:25,277 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:13:25,277 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 379 treesize of output 360 [2023-08-27 06:13:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:13:27,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072058194] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:13:27,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:13:27,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-08-27 06:13:27,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714899057] [2023-08-27 06:13:27,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:13:27,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 06:13:27,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:13:27,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 06:13:27,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=555, Unknown=3, NotChecked=0, Total=650 [2023-08-27 06:13:27,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 674 [2023-08-27 06:13:27,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1583 transitions, 44633 flow. Second operand has 26 states, 26 states have (on average 201.73076923076923) internal successors, (5245), 26 states have internal predecessors, (5245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:13:27,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:13:27,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 674 [2023-08-27 06:13:27,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:13:55,563 INFO L124 PetriNetUnfolderBase]: 30113/56621 cut-off events. [2023-08-27 06:13:55,563 INFO L125 PetriNetUnfolderBase]: For 1403017/1403017 co-relation queries the response was YES. [2023-08-27 06:13:56,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532058 conditions, 56621 events. 30113/56621 cut-off events. For 1403017/1403017 co-relation queries the response was YES. Maximal size of possible extension queue 2017. Compared 560679 event pairs, 6798 based on Foata normal form. 672/57287 useless extension candidates. Maximal degree in co-relation 531966. Up to 35721 conditions per place. [2023-08-27 06:13:56,864 INFO L140 encePairwiseOnDemand]: 658/674 looper letters, 1231 selfloop transitions, 587 changer transitions 0/1818 dead transitions. [2023-08-27 06:13:56,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1818 transitions, 53263 flow [2023-08-27 06:13:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:13:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:13:56,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2915 transitions. [2023-08-27 06:13:56,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3089232725731242 [2023-08-27 06:13:56,867 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2915 transitions. [2023-08-27 06:13:56,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2915 transitions. [2023-08-27 06:13:56,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:13:56,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2915 transitions. [2023-08-27 06:13:56,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 208.21428571428572) internal successors, (2915), 14 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:13:56,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 674.0) internal successors, (10110), 15 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:13:56,874 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 674.0) internal successors, (10110), 15 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:13:56,874 INFO L175 Difference]: Start difference. First operand has 452 places, 1583 transitions, 44633 flow. Second operand 14 states and 2915 transitions. [2023-08-27 06:13:56,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 1818 transitions, 53263 flow Received shutdown request... [2023-08-27 06:14:32,257 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 06:14:32,257 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 06:14:32,450 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (46 of 47 remaining) [2023-08-27 06:14:32,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-08-27 06:14:32,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:14:32,651 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-27 06:14:32,652 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 47 remaining) [2023-08-27 06:14:32,652 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 47 remaining) [2023-08-27 06:14:32,652 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 47 remaining) [2023-08-27 06:14:32,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 47 remaining) [2023-08-27 06:14:32,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 47 remaining) [2023-08-27 06:14:32,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 47 remaining) [2023-08-27 06:14:32,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 47 remaining) [2023-08-27 06:14:32,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 47 remaining) [2023-08-27 06:14:32,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 47 remaining) [2023-08-27 06:14:32,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 47 remaining) [2023-08-27 06:14:32,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 47 remaining) [2023-08-27 06:14:32,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 47 remaining) [2023-08-27 06:14:32,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 47 remaining) [2023-08-27 06:14:32,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 47 remaining) [2023-08-27 06:14:32,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 47 remaining) [2023-08-27 06:14:32,655 INFO L445 BasicCegarLoop]: Path program histogram: [10, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:32,660 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 06:14:32,660 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 06:14:32,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:14:32 BasicIcfg [2023-08-27 06:14:32,662 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 06:14:32,662 INFO L158 Benchmark]: Toolchain (without parser) took 768061.00ms. Allocated memory was 356.5MB in the beginning and 12.9GB in the end (delta: 12.6GB). Free memory was 313.6MB in the beginning and 11.2GB in the end (delta: -10.9GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2023-08-27 06:14:32,662 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 356.5MB. Free memory is still 332.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 06:14:32,662 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.57ms. Allocated memory is still 356.5MB. Free memory was 313.6MB in the beginning and 301.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 06:14:32,662 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.32ms. Allocated memory is still 356.5MB. Free memory was 301.8MB in the beginning and 299.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:14:32,663 INFO L158 Benchmark]: Boogie Preprocessor took 32.61ms. Allocated memory is still 356.5MB. Free memory was 299.6MB in the beginning and 297.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:14:32,663 INFO L158 Benchmark]: RCFGBuilder took 656.34ms. Allocated memory is still 356.5MB. Free memory was 297.5MB in the beginning and 323.2MB in the end (delta: -25.7MB). Peak memory consumption was 20.6MB. Max. memory is 16.0GB. [2023-08-27 06:14:32,663 INFO L158 Benchmark]: TraceAbstraction took 767018.93ms. Allocated memory was 356.5MB in the beginning and 12.9GB in the end (delta: 12.6GB). Free memory was 323.2MB in the beginning and 11.2GB in the end (delta: -10.9GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2023-08-27 06:14:32,663 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 356.5MB. Free memory is still 332.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 289.57ms. Allocated memory is still 356.5MB. Free memory was 313.6MB in the beginning and 301.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.32ms. Allocated memory is still 356.5MB. Free memory was 301.8MB in the beginning and 299.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.61ms. Allocated memory is still 356.5MB. Free memory was 299.6MB in the beginning and 297.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 656.34ms. Allocated memory is still 356.5MB. Free memory was 297.5MB in the beginning and 323.2MB in the end (delta: -25.7MB). Peak memory consumption was 20.6MB. Max. memory is 16.0GB. * TraceAbstraction took 767018.93ms. Allocated memory was 356.5MB in the beginning and 12.9GB in the end (delta: 12.6GB). Free memory was 323.2MB in the beginning and 11.2GB in the end (delta: -10.9GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.4s, 273 PlacesBefore, 49 PlacesAfterwards, 291 TransitionsBefore, 47 TransitionsAfterwards, 13172 CoEnabledTransitionPairs, 8 FixpointIterations, 121 TrivialSequentialCompositions, 177 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 25 ConcurrentYvCompositions, 20 ChoiceCompositions, 372 TotalNumberOfCompositions, 15880 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14675, independent: 14540, independent conditional: 0, independent unconditional: 14540, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7607, independent: 7580, independent conditional: 0, independent unconditional: 7580, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14675, independent: 6960, independent conditional: 0, independent unconditional: 6960, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 7607, unknown conditional: 0, unknown unconditional: 7607] , Statistics on independence cache: Total cache size (in pairs): 210, Positive cache size: 199, Positive conditional cache size: 0, Positive unconditional cache size: 199, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, 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 executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 416 locations, 47 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: 766.8s, OverallIterations: 72, TraceHistogramMax: 10, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 477.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.6s, HoareTripleCheckerStatistics: 95 mSolverCounterUnknown, 14438 SdHoareTripleChecker+Valid, 31.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14438 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 27.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 5451 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 971 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53168 IncrementalHoareTripleChecker+Invalid, 59685 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 971 mSolverCounterUnsat, 0 mSDtfsCounter, 53168 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2611 GetRequests, 819 SyntacticMatches, 67 SemanticMatches, 1725 ConstructedPredicates, 36 IntricatePredicates, 7 DeprecatedPredicates, 12628 ImplicationChecksByTransitivity, 65.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44633occurred in iteration=71, InterpolantAutomatonStates: 849, 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: 0.8s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 251.8s InterpolantComputationTime, 1816 NumberOfCodeBlocks, 1793 NumberOfCodeBlocksAsserted, 154 NumberOfCheckSat, 2400 ConstructedInterpolants, 222 QuantifiedInterpolants, 42300 SizeOfPredicates, 572 NumberOfNonLiveVariables, 12718 ConjunctsInSsa, 1501 ConjunctsInUnsatCore, 187 InterpolantComputations, 25 PerfectInterpolantSequences, 446/1248 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