/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 23:39:43,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 23:39:43,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 23:39:43,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 23:39:43,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 23:39:43,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 23:39:43,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 23:39:43,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 23:39:43,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 23:39:43,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 23:39:43,995 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 23:39:43,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 23:39:43,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 23:39:43,996 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 23:39:43,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 23:39:43,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 23:39:43,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 23:39:43,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 23:39:43,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 23:39:43,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 23:39:43,999 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 23:39:43,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 23:39:43,999 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 23:39:44,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 23:39:44,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 23:39:44,000 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 23:39:44,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 23:39:44,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:39:44,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 23:39:44,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 23:39:44,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 23:39:44,002 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 23:39:44,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 23:39:44,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 23:39:44,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 23:39:44,003 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 23:39:44,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 23:39:44,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 23:39:44,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 23:39:44,324 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 23:39:44,325 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 23:39:44,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c [2023-08-26 23:39:45,523 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 23:39:45,744 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 23:39:45,745 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c [2023-08-26 23:39:45,751 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe6072bb/a2b426bdf71d42a1a557914900982286/FLAG74ee78577 [2023-08-26 23:39:45,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfe6072bb/a2b426bdf71d42a1a557914900982286 [2023-08-26 23:39:45,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 23:39:45,765 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 23:39:45,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 23:39:45,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 23:39:45,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 23:39:45,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:39:45" (1/1) ... [2023-08-26 23:39:45,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f863fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:45, skipping insertion in model container [2023-08-26 23:39:45,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:39:45" (1/1) ... [2023-08-26 23:39:45,791 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 23:39:45,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:39:45,965 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 23:39:45,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:39:46,003 INFO L206 MainTranslator]: Completed translation [2023-08-26 23:39:46,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46 WrapperNode [2023-08-26 23:39:46,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 23:39:46,004 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 23:39:46,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 23:39:46,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 23:39:46,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (1/1) ... [2023-08-26 23:39:46,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (1/1) ... [2023-08-26 23:39:46,064 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 266 [2023-08-26 23:39:46,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 23:39:46,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 23:39:46,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 23:39:46,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 23:39:46,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (1/1) ... [2023-08-26 23:39:46,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (1/1) ... [2023-08-26 23:39:46,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (1/1) ... [2023-08-26 23:39:46,085 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (1/1) ... [2023-08-26 23:39:46,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (1/1) ... [2023-08-26 23:39:46,094 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (1/1) ... [2023-08-26 23:39:46,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (1/1) ... [2023-08-26 23:39:46,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (1/1) ... [2023-08-26 23:39:46,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 23:39:46,116 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 23:39:46,116 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 23:39:46,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 23:39:46,117 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (1/1) ... [2023-08-26 23:39:46,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:39:46,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:39:46,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 23:39:46,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 23:39:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 23:39:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 23:39:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 23:39:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 23:39:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 23:39:46,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 23:39:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 23:39:46,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 23:39:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 23:39:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 23:39:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 23:39:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 23:39:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 23:39:46,193 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 23:39:46,322 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 23:39:46,327 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 23:39:46,720 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 23:39:46,736 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 23:39:46,736 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 23:39:46,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:39:46 BoogieIcfgContainer [2023-08-26 23:39:46,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 23:39:46,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 23:39:46,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 23:39:46,743 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 23:39:46,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:39:45" (1/3) ... [2023-08-26 23:39:46,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17bb8e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:39:46, skipping insertion in model container [2023-08-26 23:39:46,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:39:46" (2/3) ... [2023-08-26 23:39:46,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17bb8e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:39:46, skipping insertion in model container [2023-08-26 23:39:46,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:39:46" (3/3) ... [2023-08-26 23:39:46,747 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2023-08-26 23:39:46,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 23:39:46,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-08-26 23:39:46,761 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 23:39:46,877 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 23:39:46,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 322 transitions, 660 flow [2023-08-26 23:39:47,024 INFO L124 PetriNetUnfolderBase]: 23/320 cut-off events. [2023-08-26 23:39:47,025 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 23:39:47,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 320 events. 23/320 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 699 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2023-08-26 23:39:47,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 322 transitions, 660 flow [2023-08-26 23:39:47,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 311 transitions, 634 flow [2023-08-26 23:39:47,043 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 23:39:47,051 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 295 places, 311 transitions, 634 flow [2023-08-26 23:39:47,053 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 295 places, 311 transitions, 634 flow [2023-08-26 23:39:47,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 311 transitions, 634 flow [2023-08-26 23:39:47,148 INFO L124 PetriNetUnfolderBase]: 23/311 cut-off events. [2023-08-26 23:39:47,148 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 23:39:47,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 311 events. 23/311 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 697 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 203. Up to 2 conditions per place. [2023-08-26 23:39:47,164 INFO L119 LiptonReduction]: Number of co-enabled transitions 18512 [2023-08-26 23:40:00,600 INFO L134 LiptonReduction]: Checked pairs total: 18141 [2023-08-26 23:40:00,601 INFO L136 LiptonReduction]: Total number of compositions: 397 [2023-08-26 23:40:00,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 23:40:00,619 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;@5c6990b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 23:40:00,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-08-26 23:40:00,621 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 23:40:00,621 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 23:40:00,621 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:40:00,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:00,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 23:40:00,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:00,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:00,626 INFO L85 PathProgramCache]: Analyzing trace with hash 42997, now seen corresponding path program 1 times [2023-08-26 23:40:00,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:00,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831038474] [2023-08-26 23:40:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:00,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:40:00,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:00,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831038474] [2023-08-26 23:40:00,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831038474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:00,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:00,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:40:00,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895672395] [2023-08-26 23:40:00,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:00,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:40:00,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:00,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:40:00,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:40:00,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-26 23:40:00,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 3 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) [2023-08-26 23:40:00,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:00,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-26 23:40:00,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:01,142 INFO L124 PetriNetUnfolderBase]: 227/394 cut-off events. [2023-08-26 23:40:01,143 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-26 23:40:01,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 394 events. 227/394 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1566 event pairs, 189 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 720. Up to 394 conditions per place. [2023-08-26 23:40:01,146 INFO L140 encePairwiseOnDemand]: 706/719 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-26 23:40:01,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 136 flow [2023-08-26 23:40:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:40:01,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:40:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 920 transitions. [2023-08-26 23:40:01,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42651831247102456 [2023-08-26 23:40:01,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 920 transitions. [2023-08-26 23:40:01,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 920 transitions. [2023-08-26 23:40:01,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:01,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 920 transitions. [2023-08-26 23:40:01,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:01,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:01,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:01,187 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 3 states and 920 transitions. [2023-08-26 23:40:01,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 136 flow [2023-08-26 23:40:01,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 23:40:01,191 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 83 flow [2023-08-26 23:40:01,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2023-08-26 23:40:01,195 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -9 predicate places. [2023-08-26 23:40:01,195 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 83 flow [2023-08-26 23:40:01,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-26 23:40:01,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:01,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:40:01,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 23:40:01,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:01,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:01,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1336503, now seen corresponding path program 1 times [2023-08-26 23:40:01,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:01,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260067888] [2023-08-26 23:40:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:01,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:40:01,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:01,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260067888] [2023-08-26 23:40:01,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260067888] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:01,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793519824] [2023-08-26 23:40:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:01,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:01,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:01,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:40:01,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 23:40:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:01,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:40:01,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:40:01,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:40:01,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793519824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:01,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:40:01,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 23:40:01,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655158395] [2023-08-26 23:40:01,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:01,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:40:01,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:01,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:40:01,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:40:01,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-26 23:40:01,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:01,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:01,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-26 23:40:01,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:01,543 INFO L124 PetriNetUnfolderBase]: 227/393 cut-off events. [2023-08-26 23:40:01,544 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 23:40:01,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 393 events. 227/393 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1557 event pairs, 189 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 783. Up to 390 conditions per place. [2023-08-26 23:40:01,548 INFO L140 encePairwiseOnDemand]: 715/719 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-08-26 23:40:01,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 139 flow [2023-08-26 23:40:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:40:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:40:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1203 transitions. [2023-08-26 23:40:01,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4182892906815021 [2023-08-26 23:40:01,552 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1203 transitions. [2023-08-26 23:40:01,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1203 transitions. [2023-08-26 23:40:01,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:01,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1203 transitions. [2023-08-26 23:40:01,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 300.75) internal successors, (1203), 4 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:01,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 719.0) internal successors, (3595), 5 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:01,563 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 719.0) internal successors, (3595), 5 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:01,564 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 83 flow. Second operand 4 states and 1203 transitions. [2023-08-26 23:40:01,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 139 flow [2023-08-26 23:40:01,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:01,568 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 82 flow [2023-08-26 23:40:01,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2023-08-26 23:40:01,573 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2023-08-26 23:40:01,573 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 82 flow [2023-08-26 23:40:01,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:01,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:01,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:40:01,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:01,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:01,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:01,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:01,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1336502, now seen corresponding path program 1 times [2023-08-26 23:40:01,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:01,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723801459] [2023-08-26 23:40:01,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:01,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:40:01,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:01,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723801459] [2023-08-26 23:40:01,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723801459] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:01,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432615247] [2023-08-26 23:40:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:01,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:01,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:01,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:40:01,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 23:40:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:01,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:40:01,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:01,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:40:01,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:40:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:40:02,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432615247] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:40:02,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:40:02,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-26 23:40:02,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903087067] [2023-08-26 23:40:02,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:40:02,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:40:02,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:02,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:40:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:40:02,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-26 23:40:02,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 294.14285714285717) internal successors, (2059), 7 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:02,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-26 23:40:02,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:02,119 INFO L124 PetriNetUnfolderBase]: 230/399 cut-off events. [2023-08-26 23:40:02,119 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 23:40:02,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 399 events. 230/399 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1592 event pairs, 189 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 783. Up to 396 conditions per place. [2023-08-26 23:40:02,122 INFO L140 encePairwiseOnDemand]: 715/719 looper letters, 27 selfloop transitions, 9 changer transitions 0/36 dead transitions. [2023-08-26 23:40:02,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 184 flow [2023-08-26 23:40:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:40:02,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:40:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1797 transitions. [2023-08-26 23:40:02,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41655076495132126 [2023-08-26 23:40:02,138 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1797 transitions. [2023-08-26 23:40:02,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1797 transitions. [2023-08-26 23:40:02,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:02,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1797 transitions. [2023-08-26 23:40:02,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 299.5) internal successors, (1797), 6 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 719.0) internal successors, (5033), 7 states have internal predecessors, (5033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,153 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 719.0) internal successors, (5033), 7 states have internal predecessors, (5033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,153 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 82 flow. Second operand 6 states and 1797 transitions. [2023-08-26 23:40:02,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 184 flow [2023-08-26 23:40:02,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:40:02,156 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 140 flow [2023-08-26 23:40:02,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-08-26 23:40:02,158 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-26 23:40:02,158 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 140 flow [2023-08-26 23:40:02,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 294.14285714285717) internal successors, (2059), 7 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:02,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 23:40:02,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:02,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-26 23:40:02,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:02,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:02,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1282622859, now seen corresponding path program 1 times [2023-08-26 23:40:02,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:02,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550851223] [2023-08-26 23:40:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:02,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:40:02,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:02,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550851223] [2023-08-26 23:40:02,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550851223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:02,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:02,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:40:02,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27664644] [2023-08-26 23:40:02,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:02,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:40:02,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:02,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:40:02,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:40:02,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-26 23:40:02,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:02,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-26 23:40:02,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:02,601 INFO L124 PetriNetUnfolderBase]: 298/521 cut-off events. [2023-08-26 23:40:02,601 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-26 23:40:02,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 521 events. 298/521 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2334 event pairs, 189 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 1056. Up to 400 conditions per place. [2023-08-26 23:40:02,603 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 51 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-26 23:40:02,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 283 flow [2023-08-26 23:40:02,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:40:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:40:02,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 929 transitions. [2023-08-26 23:40:02,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43069077422345853 [2023-08-26 23:40:02,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 929 transitions. [2023-08-26 23:40:02,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 929 transitions. [2023-08-26 23:40:02,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:02,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 929 transitions. [2023-08-26 23:40:02,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,614 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 140 flow. Second operand 3 states and 929 transitions. [2023-08-26 23:40:02,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 283 flow [2023-08-26 23:40:02,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 262 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:02,616 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 139 flow [2023-08-26 23:40:02,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-26 23:40:02,617 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2023-08-26 23:40:02,617 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 139 flow [2023-08-26 23:40:02,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:02,618 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-26 23:40:02,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 23:40:02,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:02,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:02,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1164626036, now seen corresponding path program 2 times [2023-08-26 23:40:02,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:02,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389985417] [2023-08-26 23:40:02,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:02,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:40:02,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:02,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389985417] [2023-08-26 23:40:02,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389985417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547140424] [2023-08-26 23:40:02,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:40:02,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:02,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:40:02,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 23:40:02,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:40:02,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:40:02,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:40:02,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:40:02,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:40:02,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547140424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:02,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:40:02,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-26 23:40:02,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100830710] [2023-08-26 23:40:02,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:02,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:40:02,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:40:02,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:40:02,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 719 [2023-08-26 23:40:02,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:02,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 719 [2023-08-26 23:40:02,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:02,910 INFO L124 PetriNetUnfolderBase]: 298/520 cut-off events. [2023-08-26 23:40:02,910 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-08-26 23:40:02,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 520 events. 298/520 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2209 event pairs, 251 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 1213. Up to 520 conditions per place. [2023-08-26 23:40:02,913 INFO L140 encePairwiseOnDemand]: 717/719 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-26 23:40:02,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 201 flow [2023-08-26 23:40:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:40:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:40:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2023-08-26 23:40:02,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42188224385720907 [2023-08-26 23:40:02,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 910 transitions. [2023-08-26 23:40:02,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 910 transitions. [2023-08-26 23:40:02,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:02,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 910 transitions. [2023-08-26 23:40:02,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,923 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 139 flow. Second operand 3 states and 910 transitions. [2023-08-26 23:40:02,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 201 flow [2023-08-26 23:40:02,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 183 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-26 23:40:02,925 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 113 flow [2023-08-26 23:40:02,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-08-26 23:40:02,926 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-08-26 23:40:02,926 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 113 flow [2023-08-26 23:40:02,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:02,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:02,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 23:40:02,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:03,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:03,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:03,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:03,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1106604130, now seen corresponding path program 1 times [2023-08-26 23:40:03,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:03,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690266710] [2023-08-26 23:40:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:03,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:03,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:40:03,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:03,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690266710] [2023-08-26 23:40:03,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690266710] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:03,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146245870] [2023-08-26 23:40:03,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:03,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:03,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:03,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:40:03,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 23:40:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:03,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:40:03,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:40:03,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:40:03,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146245870] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:03,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:40:03,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 23:40:03,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535652185] [2023-08-26 23:40:03,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:03,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:40:03,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:03,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:40:03,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:40:03,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 719 [2023-08-26 23:40:03,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:03,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:03,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 719 [2023-08-26 23:40:03,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:03,437 INFO L124 PetriNetUnfolderBase]: 297/519 cut-off events. [2023-08-26 23:40:03,437 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-08-26 23:40:03,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 519 events. 297/519 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2202 event pairs, 251 based on Foata normal form. 1/286 useless extension candidates. Maximal degree in co-relation 1197. Up to 519 conditions per place. [2023-08-26 23:40:03,440 INFO L140 encePairwiseOnDemand]: 716/719 looper letters, 33 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-26 23:40:03,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 179 flow [2023-08-26 23:40:03,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:40:03,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:40:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 896 transitions. [2023-08-26 23:40:03,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153917477978674 [2023-08-26 23:40:03,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 896 transitions. [2023-08-26 23:40:03,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 896 transitions. [2023-08-26 23:40:03,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:03,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 896 transitions. [2023-08-26 23:40:03,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:03,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:03,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:03,449 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 113 flow. Second operand 3 states and 896 transitions. [2023-08-26 23:40:03,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 179 flow [2023-08-26 23:40:03,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:03,451 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 112 flow [2023-08-26 23:40:03,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2023-08-26 23:40:03,453 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2023-08-26 23:40:03,453 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 112 flow [2023-08-26 23:40:03,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:03,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:03,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:03,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:03,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:03,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:03,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:03,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1685650468, now seen corresponding path program 1 times [2023-08-26 23:40:03,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:03,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546360920] [2023-08-26 23:40:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:03,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:40:03,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546360920] [2023-08-26 23:40:03,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546360920] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521394736] [2023-08-26 23:40:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:03,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:03,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:03,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:40:03,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 23:40:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:03,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:40:03,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:40:03,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:40:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:40:03,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521394736] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:40:03,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:40:03,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-26 23:40:03,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088459312] [2023-08-26 23:40:03,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:40:03,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 23:40:03,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:03,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 23:40:03,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:40:03,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 719 [2023-08-26 23:40:03,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 112 flow. Second operand has 8 states, 8 states have (on average 283.125) internal successors, (2265), 8 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:03,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:03,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 719 [2023-08-26 23:40:03,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:04,057 INFO L124 PetriNetUnfolderBase]: 381/657 cut-off events. [2023-08-26 23:40:04,058 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-26 23:40:04,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 657 events. 381/657 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3158 event pairs, 165 based on Foata normal form. 2/371 useless extension candidates. Maximal degree in co-relation 1510. Up to 349 conditions per place. [2023-08-26 23:40:04,061 INFO L140 encePairwiseOnDemand]: 709/719 looper letters, 59 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2023-08-26 23:40:04,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 67 transitions, 314 flow [2023-08-26 23:40:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:40:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:40:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2038 transitions. [2023-08-26 23:40:04,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049274786409696 [2023-08-26 23:40:04,067 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2038 transitions. [2023-08-26 23:40:04,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2038 transitions. [2023-08-26 23:40:04,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:04,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2038 transitions. [2023-08-26 23:40:04,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 291.14285714285717) internal successors, (2038), 7 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 719.0) internal successors, (5752), 8 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,079 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 719.0) internal successors, (5752), 8 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,079 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 112 flow. Second operand 7 states and 2038 transitions. [2023-08-26 23:40:04,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 67 transitions, 314 flow [2023-08-26 23:40:04,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 67 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:40:04,081 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 142 flow [2023-08-26 23:40:04,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2023-08-26 23:40:04,082 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-26 23:40:04,082 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 142 flow [2023-08-26 23:40:04,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 283.125) internal successors, (2265), 8 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:04,083 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:04,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:04,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:04,289 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:04,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:04,289 INFO L85 PathProgramCache]: Analyzing trace with hash 574000073, now seen corresponding path program 1 times [2023-08-26 23:40:04,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:04,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051768967] [2023-08-26 23:40:04,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:04,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:04,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051768967] [2023-08-26 23:40:04,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051768967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:04,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:04,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:40:04,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569438112] [2023-08-26 23:40:04,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:04,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:40:04,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:40:04,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:40:04,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-26 23:40:04,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:04,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-26 23:40:04,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:04,488 INFO L124 PetriNetUnfolderBase]: 337/595 cut-off events. [2023-08-26 23:40:04,489 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2023-08-26 23:40:04,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 595 events. 337/595 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 2634 event pairs, 289 based on Foata normal form. 36/391 useless extension candidates. Maximal degree in co-relation 1531. Up to 595 conditions per place. [2023-08-26 23:40:04,493 INFO L140 encePairwiseOnDemand]: 717/719 looper letters, 32 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-26 23:40:04,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 194 flow [2023-08-26 23:40:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:40:04,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:40:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 906 transitions. [2023-08-26 23:40:04,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200278164116829 [2023-08-26 23:40:04,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 906 transitions. [2023-08-26 23:40:04,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 906 transitions. [2023-08-26 23:40:04,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:04,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 906 transitions. [2023-08-26 23:40:04,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,502 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 142 flow. Second operand 3 states and 906 transitions. [2023-08-26 23:40:04,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 194 flow [2023-08-26 23:40:04,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 176 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-26 23:40:04,503 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 112 flow [2023-08-26 23:40:04,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-26 23:40:04,506 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-26 23:40:04,506 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 112 flow [2023-08-26 23:40:04,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:04,506 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:04,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 23:40:04,507 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:04,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 613084515, now seen corresponding path program 1 times [2023-08-26 23:40:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748441582] [2023-08-26 23:40:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:04,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:04,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748441582] [2023-08-26 23:40:04,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748441582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:04,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:04,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:40:04,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160915714] [2023-08-26 23:40:04,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:04,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:40:04,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:04,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:40:04,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:40:04,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-26 23:40:04,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:04,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-26 23:40:04,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:04,708 INFO L124 PetriNetUnfolderBase]: 415/735 cut-off events. [2023-08-26 23:40:04,708 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2023-08-26 23:40:04,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 735 events. 415/735 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3462 event pairs, 289 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 1792. Up to 596 conditions per place. [2023-08-26 23:40:04,712 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 47 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-26 23:40:04,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 272 flow [2023-08-26 23:40:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:40:04,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:40:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 924 transitions. [2023-08-26 23:40:04,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4283727399165508 [2023-08-26 23:40:04,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 924 transitions. [2023-08-26 23:40:04,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 924 transitions. [2023-08-26 23:40:04,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:04,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 924 transitions. [2023-08-26 23:40:04,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,727 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 112 flow. Second operand 3 states and 924 transitions. [2023-08-26 23:40:04,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 272 flow [2023-08-26 23:40:04,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:04,729 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 131 flow [2023-08-26 23:40:04,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-08-26 23:40:04,730 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2023-08-26 23:40:04,730 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 131 flow [2023-08-26 23:40:04,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:04,731 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-08-26 23:40:04,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 23:40:04,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:04,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:04,731 INFO L85 PathProgramCache]: Analyzing trace with hash 614134461, now seen corresponding path program 2 times [2023-08-26 23:40:04,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:04,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994737429] [2023-08-26 23:40:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:04,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:04,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:04,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994737429] [2023-08-26 23:40:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994737429] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:04,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129209233] [2023-08-26 23:40:04,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:40:04,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:04,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:04,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:40:04,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 23:40:04,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:40:04,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:40:04,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:40:04,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-26 23:40:04,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:40:04,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129209233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:04,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:40:04,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-26 23:40:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448876362] [2023-08-26 23:40:04,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:40:04,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:40:04,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:40:04,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 719 [2023-08-26 23:40:04,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:04,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:04,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 719 [2023-08-26 23:40:04,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:05,065 INFO L124 PetriNetUnfolderBase]: 347/619 cut-off events. [2023-08-26 23:40:05,066 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2023-08-26 23:40:05,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 619 events. 347/619 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2707 event pairs, 299 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 1699. Up to 619 conditions per place. [2023-08-26 23:40:05,069 INFO L140 encePairwiseOnDemand]: 716/719 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-26 23:40:05,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 185 flow [2023-08-26 23:40:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:40:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:40:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 893 transitions. [2023-08-26 23:40:05,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140009272137228 [2023-08-26 23:40:05,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 893 transitions. [2023-08-26 23:40:05,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 893 transitions. [2023-08-26 23:40:05,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:05,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 893 transitions. [2023-08-26 23:40:05,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:05,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:05,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:05,077 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 131 flow. Second operand 3 states and 893 transitions. [2023-08-26 23:40:05,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 185 flow [2023-08-26 23:40:05,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:05,079 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 121 flow [2023-08-26 23:40:05,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-08-26 23:40:05,079 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-26 23:40:05,079 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 121 flow [2023-08-26 23:40:05,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:05,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:05,080 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-08-26 23:40:05,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:05,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:05,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:05,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:05,286 INFO L85 PathProgramCache]: Analyzing trace with hash 614134430, now seen corresponding path program 1 times [2023-08-26 23:40:05,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:05,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020024302] [2023-08-26 23:40:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:05,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-26 23:40:05,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:05,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020024302] [2023-08-26 23:40:05,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020024302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:05,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:05,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:40:05,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445653662] [2023-08-26 23:40:05,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:05,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:40:05,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:40:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:40:05,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 719 [2023-08-26 23:40:05,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:05,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:05,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 719 [2023-08-26 23:40:05,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:05,472 INFO L124 PetriNetUnfolderBase]: 285/513 cut-off events. [2023-08-26 23:40:05,472 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2023-08-26 23:40:05,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 513 events. 285/513 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2094 event pairs, 241 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 1362. Up to 513 conditions per place. [2023-08-26 23:40:05,475 INFO L140 encePairwiseOnDemand]: 716/719 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-26 23:40:05,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 171 flow [2023-08-26 23:40:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:40:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:40:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 891 transitions. [2023-08-26 23:40:05,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41307371349095967 [2023-08-26 23:40:05,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 891 transitions. [2023-08-26 23:40:05,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 891 transitions. [2023-08-26 23:40:05,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:05,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 891 transitions. [2023-08-26 23:40:05,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:05,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:05,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:05,484 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 121 flow. Second operand 3 states and 891 transitions. [2023-08-26 23:40:05,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 171 flow [2023-08-26 23:40:05,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 30 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:05,486 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 112 flow [2023-08-26 23:40:05,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2023-08-26 23:40:05,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-26 23:40:05,487 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 112 flow [2023-08-26 23:40:05,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:05,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:05,487 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-08-26 23:40:05,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 23:40:05,487 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:05,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:05,488 INFO L85 PathProgramCache]: Analyzing trace with hash 614134460, now seen corresponding path program 1 times [2023-08-26 23:40:05,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:05,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512135848] [2023-08-26 23:40:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:05,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:05,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512135848] [2023-08-26 23:40:05,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512135848] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809042835] [2023-08-26 23:40:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:05,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:05,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:05,593 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:40:05,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 23:40:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:05,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:40:05,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:05,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:40:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:05,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809042835] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:40:05,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:40:05,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-26 23:40:05,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882668712] [2023-08-26 23:40:05,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:40:05,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 23:40:05,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:05,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 23:40:05,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:40:05,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-26 23:40:05,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 294.6666666666667) internal successors, (1768), 6 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:05,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:05,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-26 23:40:05,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:06,006 INFO L124 PetriNetUnfolderBase]: 353/637 cut-off events. [2023-08-26 23:40:06,006 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-08-26 23:40:06,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 637 events. 353/637 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3006 event pairs, 117 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 1684. Up to 266 conditions per place. [2023-08-26 23:40:06,010 INFO L140 encePairwiseOnDemand]: 715/719 looper letters, 72 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-08-26 23:40:06,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 76 transitions, 405 flow [2023-08-26 23:40:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2023-08-26 23:40:06,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267037552155772 [2023-08-26 23:40:06,014 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2023-08-26 23:40:06,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2023-08-26 23:40:06,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:06,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2023-08-26 23:40:06,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,023 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,023 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 112 flow. Second operand 5 states and 1534 transitions. [2023-08-26 23:40:06,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 76 transitions, 405 flow [2023-08-26 23:40:06,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 76 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:06,025 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 133 flow [2023-08-26 23:40:06,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2023-08-26 23:40:06,025 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-26 23:40:06,026 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 133 flow [2023-08-26 23:40:06,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 294.6666666666667) internal successors, (1768), 6 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:06,026 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-26 23:40:06,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:06,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:06,235 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:06,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:06,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1858299651, now seen corresponding path program 2 times [2023-08-26 23:40:06,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:06,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246275345] [2023-08-26 23:40:06,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:06,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-26 23:40:06,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:06,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246275345] [2023-08-26 23:40:06,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246275345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:06,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:06,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:40:06,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62351223] [2023-08-26 23:40:06,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:06,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:40:06,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:06,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:40:06,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:40:06,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 719 [2023-08-26 23:40:06,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:06,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 719 [2023-08-26 23:40:06,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:06,440 INFO L124 PetriNetUnfolderBase]: 289/527 cut-off events. [2023-08-26 23:40:06,440 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2023-08-26 23:40:06,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 527 events. 289/527 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2170 event pairs, 243 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 1479. Up to 527 conditions per place. [2023-08-26 23:40:06,443 INFO L140 encePairwiseOnDemand]: 716/719 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-26 23:40:06,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 29 transitions, 179 flow [2023-08-26 23:40:06,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:40:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:40:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2023-08-26 23:40:06,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41214649976819656 [2023-08-26 23:40:06,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 889 transitions. [2023-08-26 23:40:06,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 889 transitions. [2023-08-26 23:40:06,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:06,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 889 transitions. [2023-08-26 23:40:06,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,451 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,451 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 133 flow. Second operand 3 states and 889 transitions. [2023-08-26 23:40:06,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 29 transitions, 179 flow [2023-08-26 23:40:06,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 169 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 23:40:06,452 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 113 flow [2023-08-26 23:40:06,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2023-08-26 23:40:06,453 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-26 23:40:06,453 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 113 flow [2023-08-26 23:40:06,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:06,453 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-26 23:40:06,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 23:40:06,453 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:06,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:06,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1858299632, now seen corresponding path program 1 times [2023-08-26 23:40:06,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:06,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254823303] [2023-08-26 23:40:06,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:06,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-26 23:40:06,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254823303] [2023-08-26 23:40:06,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254823303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:06,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:06,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:40:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822177671] [2023-08-26 23:40:06,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:06,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:40:06,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:06,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:40:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:40:06,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 719 [2023-08-26 23:40:06,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:06,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 719 [2023-08-26 23:40:06,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:06,600 INFO L124 PetriNetUnfolderBase]: 231/427 cut-off events. [2023-08-26 23:40:06,601 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2023-08-26 23:40:06,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1112 conditions, 427 events. 231/427 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1654 event pairs, 189 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 1096. Up to 427 conditions per place. [2023-08-26 23:40:06,603 INFO L140 encePairwiseOnDemand]: 716/719 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-26 23:40:06,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 27 transitions, 155 flow [2023-08-26 23:40:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:40:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:40:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 887 transitions. [2023-08-26 23:40:06,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41121928604543345 [2023-08-26 23:40:06,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 887 transitions. [2023-08-26 23:40:06,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 887 transitions. [2023-08-26 23:40:06,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:06,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 887 transitions. [2023-08-26 23:40:06,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,610 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,611 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 113 flow. Second operand 3 states and 887 transitions. [2023-08-26 23:40:06,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 27 transitions, 155 flow [2023-08-26 23:40:06,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:06,612 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 102 flow [2023-08-26 23:40:06,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-08-26 23:40:06,612 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-26 23:40:06,612 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 102 flow [2023-08-26 23:40:06,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:06,613 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:06,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 23:40:06,613 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:06,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:06,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1825751903, now seen corresponding path program 1 times [2023-08-26 23:40:06,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:06,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088869842] [2023-08-26 23:40:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:06,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:06,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088869842] [2023-08-26 23:40:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088869842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:06,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:40:06,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874486411] [2023-08-26 23:40:06,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:06,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:40:06,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:06,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:40:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:40:06,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 719 [2023-08-26 23:40:06,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:06,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 719 [2023-08-26 23:40:06,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:06,748 INFO L124 PetriNetUnfolderBase]: 196/366 cut-off events. [2023-08-26 23:40:06,748 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2023-08-26 23:40:06,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 366 events. 196/366 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1341 event pairs, 156 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 930. Up to 366 conditions per place. [2023-08-26 23:40:06,750 INFO L140 encePairwiseOnDemand]: 717/719 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-26 23:40:06,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 150 flow [2023-08-26 23:40:06,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:40:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:40:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 897 transitions. [2023-08-26 23:40:06,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41585535465924894 [2023-08-26 23:40:06,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 897 transitions. [2023-08-26 23:40:06,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 897 transitions. [2023-08-26 23:40:06,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:06,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 897 transitions. [2023-08-26 23:40:06,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,757 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 102 flow. Second operand 3 states and 897 transitions. [2023-08-26 23:40:06,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 150 flow [2023-08-26 23:40:06,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 26 transitions, 149 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:06,759 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 99 flow [2023-08-26 23:40:06,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2023-08-26 23:40:06,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-26 23:40:06,759 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 99 flow [2023-08-26 23:40:06,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:06,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:06,760 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:06,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 23:40:06,760 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:06,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:06,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1078590853, now seen corresponding path program 1 times [2023-08-26 23:40:06,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:06,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903336382] [2023-08-26 23:40:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:06,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:07,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:07,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903336382] [2023-08-26 23:40:07,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903336382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:07,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:07,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:07,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171948871] [2023-08-26 23:40:07,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:07,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 23:40:07,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:07,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 23:40:07,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:40:07,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-26 23:40:07,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:07,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:07,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-26 23:40:07,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:07,401 INFO L124 PetriNetUnfolderBase]: 260/482 cut-off events. [2023-08-26 23:40:07,401 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2023-08-26 23:40:07,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 482 events. 260/482 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2180 event pairs, 4 based on Foata normal form. 4/486 useless extension candidates. Maximal degree in co-relation 1218. Up to 372 conditions per place. [2023-08-26 23:40:07,404 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 35 selfloop transitions, 14 changer transitions 3/52 dead transitions. [2023-08-26 23:40:07,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 299 flow [2023-08-26 23:40:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:07,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1297 transitions. [2023-08-26 23:40:07,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.360778859527121 [2023-08-26 23:40:07,408 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1297 transitions. [2023-08-26 23:40:07,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1297 transitions. [2023-08-26 23:40:07,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:07,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1297 transitions. [2023-08-26 23:40:07,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.4) internal successors, (1297), 5 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:07,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:07,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:07,414 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 99 flow. Second operand 5 states and 1297 transitions. [2023-08-26 23:40:07,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 299 flow [2023-08-26 23:40:07,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:07,416 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 233 flow [2023-08-26 23:40:07,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-26 23:40:07,417 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-08-26 23:40:07,417 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 233 flow [2023-08-26 23:40:07,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:07,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:07,417 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:07,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 23:40:07,418 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:07,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:07,418 INFO L85 PathProgramCache]: Analyzing trace with hash -498891611, now seen corresponding path program 2 times [2023-08-26 23:40:07,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:07,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824416897] [2023-08-26 23:40:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:07,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:07,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824416897] [2023-08-26 23:40:07,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824416897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:07,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:07,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:07,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961425473] [2023-08-26 23:40:07,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:07,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 23:40:07,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 23:40:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:40:07,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-26 23:40:07,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:07,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:07,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-26 23:40:07,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:08,031 INFO L124 PetriNetUnfolderBase]: 260/489 cut-off events. [2023-08-26 23:40:08,031 INFO L125 PetriNetUnfolderBase]: For 548/548 co-relation queries the response was YES. [2023-08-26 23:40:08,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 489 events. 260/489 cut-off events. For 548/548 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2132 event pairs, 66 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 1638. Up to 261 conditions per place. [2023-08-26 23:40:08,034 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 53 selfloop transitions, 6 changer transitions 6/65 dead transitions. [2023-08-26 23:40:08,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 488 flow [2023-08-26 23:40:08,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1300 transitions. [2023-08-26 23:40:08,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3616133518776078 [2023-08-26 23:40:08,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1300 transitions. [2023-08-26 23:40:08,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1300 transitions. [2023-08-26 23:40:08,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:08,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1300 transitions. [2023-08-26 23:40:08,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:08,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:08,045 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:08,045 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 233 flow. Second operand 5 states and 1300 transitions. [2023-08-26 23:40:08,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 488 flow [2023-08-26 23:40:08,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 483 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:08,048 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 262 flow [2023-08-26 23:40:08,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-26 23:40:08,049 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2023-08-26 23:40:08,049 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 262 flow [2023-08-26 23:40:08,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:08,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:08,050 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:08,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 23:40:08,050 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:08,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:08,050 INFO L85 PathProgramCache]: Analyzing trace with hash 944086705, now seen corresponding path program 3 times [2023-08-26 23:40:08,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:08,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204453844] [2023-08-26 23:40:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:08,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:08,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:08,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204453844] [2023-08-26 23:40:08,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204453844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:08,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:08,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:08,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424320767] [2023-08-26 23:40:08,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:08,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 23:40:08,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:08,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 23:40:08,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:40:08,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-26 23:40:08,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:08,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:08,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-26 23:40:08,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:08,696 INFO L124 PetriNetUnfolderBase]: 317/617 cut-off events. [2023-08-26 23:40:08,697 INFO L125 PetriNetUnfolderBase]: For 1197/1197 co-relation queries the response was YES. [2023-08-26 23:40:08,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 617 events. 317/617 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3082 event pairs, 26 based on Foata normal form. 4/621 useless extension candidates. Maximal degree in co-relation 2380. Up to 360 conditions per place. [2023-08-26 23:40:08,701 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 47 selfloop transitions, 15 changer transitions 4/66 dead transitions. [2023-08-26 23:40:08,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 527 flow [2023-08-26 23:40:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1299 transitions. [2023-08-26 23:40:08,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613351877607789 [2023-08-26 23:40:08,704 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1299 transitions. [2023-08-26 23:40:08,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1299 transitions. [2023-08-26 23:40:08,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:08,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1299 transitions. [2023-08-26 23:40:08,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.8) internal successors, (1299), 5 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:08,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:08,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:08,713 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 262 flow. Second operand 5 states and 1299 transitions. [2023-08-26 23:40:08,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 527 flow [2023-08-26 23:40:08,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 499 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-26 23:40:08,717 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 356 flow [2023-08-26 23:40:08,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-08-26 23:40:08,719 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-08-26 23:40:08,719 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 356 flow [2023-08-26 23:40:08,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:08,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:08,720 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:08,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 23:40:08,720 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:08,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:08,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1178450149, now seen corresponding path program 4 times [2023-08-26 23:40:08,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:08,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481382303] [2023-08-26 23:40:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:08,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:09,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:09,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481382303] [2023-08-26 23:40:09,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481382303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:09,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:09,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311674173] [2023-08-26 23:40:09,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:09,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 23:40:09,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 23:40:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:40:09,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-26 23:40:09,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:09,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:09,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-26 23:40:09,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:09,424 INFO L124 PetriNetUnfolderBase]: 322/648 cut-off events. [2023-08-26 23:40:09,424 INFO L125 PetriNetUnfolderBase]: For 1755/1755 co-relation queries the response was YES. [2023-08-26 23:40:09,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2753 conditions, 648 events. 322/648 cut-off events. For 1755/1755 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3270 event pairs, 74 based on Foata normal form. 4/652 useless extension candidates. Maximal degree in co-relation 2728. Up to 283 conditions per place. [2023-08-26 23:40:09,428 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 60 selfloop transitions, 13 changer transitions 4/77 dead transitions. [2023-08-26 23:40:09,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 703 flow [2023-08-26 23:40:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1303 transitions. [2023-08-26 23:40:09,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36244784422809456 [2023-08-26 23:40:09,431 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1303 transitions. [2023-08-26 23:40:09,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1303 transitions. [2023-08-26 23:40:09,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:09,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1303 transitions. [2023-08-26 23:40:09,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 260.6) internal successors, (1303), 5 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:09,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:09,437 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:09,437 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 356 flow. Second operand 5 states and 1303 transitions. [2023-08-26 23:40:09,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 703 flow [2023-08-26 23:40:09,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 681 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-26 23:40:09,444 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 453 flow [2023-08-26 23:40:09,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2023-08-26 23:40:09,445 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-08-26 23:40:09,445 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 453 flow [2023-08-26 23:40:09,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:09,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:09,445 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:09,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 23:40:09,446 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:09,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:09,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1136728765, now seen corresponding path program 5 times [2023-08-26 23:40:09,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:09,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764916322] [2023-08-26 23:40:09,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:09,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:09,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764916322] [2023-08-26 23:40:09,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764916322] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:09,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:09,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:09,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630109443] [2023-08-26 23:40:09,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:09,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 23:40:09,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:09,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 23:40:09,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:40:09,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-26 23:40:09,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:09,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:09,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-26 23:40:09,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:10,058 INFO L124 PetriNetUnfolderBase]: 298/612 cut-off events. [2023-08-26 23:40:10,059 INFO L125 PetriNetUnfolderBase]: For 1907/1907 co-relation queries the response was YES. [2023-08-26 23:40:10,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2812 conditions, 612 events. 298/612 cut-off events. For 1907/1907 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3218 event pairs, 11 based on Foata normal form. 18/630 useless extension candidates. Maximal degree in co-relation 2786. Up to 391 conditions per place. [2023-08-26 23:40:10,063 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 49 selfloop transitions, 5 changer transitions 8/62 dead transitions. [2023-08-26 23:40:10,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 565 flow [2023-08-26 23:40:10,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1297 transitions. [2023-08-26 23:40:10,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.360778859527121 [2023-08-26 23:40:10,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1297 transitions. [2023-08-26 23:40:10,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1297 transitions. [2023-08-26 23:40:10,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:10,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1297 transitions. [2023-08-26 23:40:10,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.4) internal successors, (1297), 5 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:10,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:10,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:10,074 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 453 flow. Second operand 5 states and 1297 transitions. [2023-08-26 23:40:10,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 565 flow [2023-08-26 23:40:10,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 533 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:10,078 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 303 flow [2023-08-26 23:40:10,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2023-08-26 23:40:10,078 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2023-08-26 23:40:10,078 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 303 flow [2023-08-26 23:40:10,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:10,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:10,079 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:10,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 23:40:10,080 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:10,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:10,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1344683929, now seen corresponding path program 6 times [2023-08-26 23:40:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448943742] [2023-08-26 23:40:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:10,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:10,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:10,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448943742] [2023-08-26 23:40:10,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448943742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:10,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:10,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638262607] [2023-08-26 23:40:10,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:10,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 23:40:10,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:10,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 23:40:10,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:40:10,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 719 [2023-08-26 23:40:10,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:10,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:10,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 719 [2023-08-26 23:40:10,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:10,635 INFO L124 PetriNetUnfolderBase]: 240/470 cut-off events. [2023-08-26 23:40:10,636 INFO L125 PetriNetUnfolderBase]: For 1746/1746 co-relation queries the response was YES. [2023-08-26 23:40:10,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 470 events. 240/470 cut-off events. For 1746/1746 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2058 event pairs, 66 based on Foata normal form. 12/482 useless extension candidates. Maximal degree in co-relation 2042. Up to 283 conditions per place. [2023-08-26 23:40:10,639 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 44 selfloop transitions, 7 changer transitions 6/57 dead transitions. [2023-08-26 23:40:10,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 57 transitions, 503 flow [2023-08-26 23:40:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:10,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1298 transitions. [2023-08-26 23:40:10,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3610570236439499 [2023-08-26 23:40:10,644 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1298 transitions. [2023-08-26 23:40:10,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1298 transitions. [2023-08-26 23:40:10,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:10,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1298 transitions. [2023-08-26 23:40:10,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.6) internal successors, (1298), 5 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:10,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:10,650 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:10,650 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 303 flow. Second operand 5 states and 1298 transitions. [2023-08-26 23:40:10,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 57 transitions, 503 flow [2023-08-26 23:40:10,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 464 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-08-26 23:40:10,654 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 247 flow [2023-08-26 23:40:10,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=247, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2023-08-26 23:40:10,655 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-08-26 23:40:10,655 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 247 flow [2023-08-26 23:40:10,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:10,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:10,656 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:10,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 23:40:10,656 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:10,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:10,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1912224836, now seen corresponding path program 1 times [2023-08-26 23:40:10,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:10,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085142771] [2023-08-26 23:40:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:10,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:10,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:10,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085142771] [2023-08-26 23:40:10,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085142771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:10,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:10,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:10,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733582885] [2023-08-26 23:40:10,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:10,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:40:10,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:10,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:40:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:40:10,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 719 [2023-08-26 23:40:10,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:10,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:10,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 719 [2023-08-26 23:40:10,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:10,989 INFO L124 PetriNetUnfolderBase]: 226/412 cut-off events. [2023-08-26 23:40:10,989 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2023-08-26 23:40:10,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1817 conditions, 412 events. 226/412 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1602 event pairs, 24 based on Foata normal form. 4/416 useless extension candidates. Maximal degree in co-relation 1792. Up to 202 conditions per place. [2023-08-26 23:40:10,993 INFO L140 encePairwiseOnDemand]: 714/719 looper letters, 49 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2023-08-26 23:40:10,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 496 flow [2023-08-26 23:40:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1350 transitions. [2023-08-26 23:40:10,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37552155771905427 [2023-08-26 23:40:10,996 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1350 transitions. [2023-08-26 23:40:10,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1350 transitions. [2023-08-26 23:40:10,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:10,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1350 transitions. [2023-08-26 23:40:10,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,002 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,002 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 247 flow. Second operand 5 states and 1350 transitions. [2023-08-26 23:40:11,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 496 flow [2023-08-26 23:40:11,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 440 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-08-26 23:40:11,005 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 260 flow [2023-08-26 23:40:11,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2023-08-26 23:40:11,006 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-08-26 23:40:11,006 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 260 flow [2023-08-26 23:40:11,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:11,007 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:11,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 23:40:11,007 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:11,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:11,007 INFO L85 PathProgramCache]: Analyzing trace with hash 559643802, now seen corresponding path program 2 times [2023-08-26 23:40:11,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:11,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545854002] [2023-08-26 23:40:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:11,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:11,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:11,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545854002] [2023-08-26 23:40:11,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545854002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:11,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:11,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:11,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322366083] [2023-08-26 23:40:11,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:11,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:40:11,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:11,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:40:11,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:40:11,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 719 [2023-08-26 23:40:11,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:11,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 719 [2023-08-26 23:40:11,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:11,452 INFO L124 PetriNetUnfolderBase]: 222/408 cut-off events. [2023-08-26 23:40:11,453 INFO L125 PetriNetUnfolderBase]: For 1446/1446 co-relation queries the response was YES. [2023-08-26 23:40:11,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1725 conditions, 408 events. 222/408 cut-off events. For 1446/1446 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1623 event pairs, 50 based on Foata normal form. 4/412 useless extension candidates. Maximal degree in co-relation 1700. Up to 267 conditions per place. [2023-08-26 23:40:11,456 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 57 selfloop transitions, 15 changer transitions 3/75 dead transitions. [2023-08-26 23:40:11,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 617 flow [2023-08-26 23:40:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:40:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:40:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1847 transitions. [2023-08-26 23:40:11,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36697794555930857 [2023-08-26 23:40:11,461 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1847 transitions. [2023-08-26 23:40:11,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1847 transitions. [2023-08-26 23:40:11,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:11,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1847 transitions. [2023-08-26 23:40:11,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.85714285714283) internal successors, (1847), 7 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 719.0) internal successors, (5752), 8 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,472 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 719.0) internal successors, (5752), 8 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,472 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 260 flow. Second operand 7 states and 1847 transitions. [2023-08-26 23:40:11,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 617 flow [2023-08-26 23:40:11,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 589 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-26 23:40:11,476 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 360 flow [2023-08-26 23:40:11,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-26 23:40:11,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2023-08-26 23:40:11,477 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 360 flow [2023-08-26 23:40:11,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:11,477 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:11,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 23:40:11,478 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:11,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:11,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1361992902, now seen corresponding path program 3 times [2023-08-26 23:40:11,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:11,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717298905] [2023-08-26 23:40:11,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:11,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:11,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:11,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717298905] [2023-08-26 23:40:11,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717298905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:11,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:11,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268825616] [2023-08-26 23:40:11,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:11,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:40:11,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:11,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:40:11,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:40:11,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 719 [2023-08-26 23:40:11,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:11,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 719 [2023-08-26 23:40:11,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:11,853 INFO L124 PetriNetUnfolderBase]: 231/427 cut-off events. [2023-08-26 23:40:11,853 INFO L125 PetriNetUnfolderBase]: For 1612/1612 co-relation queries the response was YES. [2023-08-26 23:40:11,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1981 conditions, 427 events. 231/427 cut-off events. For 1612/1612 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1694 event pairs, 95 based on Foata normal form. 4/431 useless extension candidates. Maximal degree in co-relation 1952. Up to 326 conditions per place. [2023-08-26 23:40:11,862 INFO L140 encePairwiseOnDemand]: 714/719 looper letters, 57 selfloop transitions, 14 changer transitions 0/71 dead transitions. [2023-08-26 23:40:11,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 634 flow [2023-08-26 23:40:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1359 transitions. [2023-08-26 23:40:11,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780250347705146 [2023-08-26 23:40:11,866 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1359 transitions. [2023-08-26 23:40:11,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1359 transitions. [2023-08-26 23:40:11,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:11,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1359 transitions. [2023-08-26 23:40:11,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 271.8) internal successors, (1359), 5 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,874 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 360 flow. Second operand 5 states and 1359 transitions. [2023-08-26 23:40:11,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 634 flow [2023-08-26 23:40:11,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 600 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-26 23:40:11,879 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 449 flow [2023-08-26 23:40:11,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=449, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2023-08-26 23:40:11,879 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2023-08-26 23:40:11,880 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 449 flow [2023-08-26 23:40:11,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:11,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:11,880 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:11,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 23:40:11,880 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:11,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:11,881 INFO L85 PathProgramCache]: Analyzing trace with hash -234105642, now seen corresponding path program 4 times [2023-08-26 23:40:11,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300623020] [2023-08-26 23:40:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:12,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:12,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300623020] [2023-08-26 23:40:12,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300623020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:12,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:12,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260903445] [2023-08-26 23:40:12,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:40:12,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:40:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:40:12,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 719 [2023-08-26 23:40:12,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:12,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 719 [2023-08-26 23:40:12,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:12,223 INFO L124 PetriNetUnfolderBase]: 221/407 cut-off events. [2023-08-26 23:40:12,224 INFO L125 PetriNetUnfolderBase]: For 1919/1919 co-relation queries the response was YES. [2023-08-26 23:40:12,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 407 events. 221/407 cut-off events. For 1919/1919 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1581 event pairs, 95 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 1942. Up to 326 conditions per place. [2023-08-26 23:40:12,227 INFO L140 encePairwiseOnDemand]: 714/719 looper letters, 46 selfloop transitions, 13 changer transitions 4/63 dead transitions. [2023-08-26 23:40:12,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 595 flow [2023-08-26 23:40:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1352 transitions. [2023-08-26 23:40:12,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760778859527121 [2023-08-26 23:40:12,230 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1352 transitions. [2023-08-26 23:40:12,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1352 transitions. [2023-08-26 23:40:12,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:12,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1352 transitions. [2023-08-26 23:40:12,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.4) internal successors, (1352), 5 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,235 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,235 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 449 flow. Second operand 5 states and 1352 transitions. [2023-08-26 23:40:12,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 595 flow [2023-08-26 23:40:12,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 578 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:12,245 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 433 flow [2023-08-26 23:40:12,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=433, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2023-08-26 23:40:12,245 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2023-08-26 23:40:12,246 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 433 flow [2023-08-26 23:40:12,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:12,246 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:12,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 23:40:12,246 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:12,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1894084612, now seen corresponding path program 5 times [2023-08-26 23:40:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84984080] [2023-08-26 23:40:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:12,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:12,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84984080] [2023-08-26 23:40:12,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84984080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:12,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:12,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:12,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395523532] [2023-08-26 23:40:12,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:12,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:40:12,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:12,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:40:12,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:40:12,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 719 [2023-08-26 23:40:12,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 433 flow. Second operand has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:12,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 719 [2023-08-26 23:40:12,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:12,598 INFO L124 PetriNetUnfolderBase]: 216/398 cut-off events. [2023-08-26 23:40:12,598 INFO L125 PetriNetUnfolderBase]: For 1926/1926 co-relation queries the response was YES. [2023-08-26 23:40:12,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 398 events. 216/398 cut-off events. For 1926/1926 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1516 event pairs, 80 based on Foata normal form. 4/402 useless extension candidates. Maximal degree in co-relation 1916. Up to 291 conditions per place. [2023-08-26 23:40:12,603 INFO L140 encePairwiseOnDemand]: 714/719 looper letters, 48 selfloop transitions, 11 changer transitions 4/63 dead transitions. [2023-08-26 23:40:12,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 640 flow [2023-08-26 23:40:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1347 transitions. [2023-08-26 23:40:12,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37468706536856744 [2023-08-26 23:40:12,606 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1347 transitions. [2023-08-26 23:40:12,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1347 transitions. [2023-08-26 23:40:12,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:12,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1347 transitions. [2023-08-26 23:40:12,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.4) internal successors, (1347), 5 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,612 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,612 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 433 flow. Second operand 5 states and 1347 transitions. [2023-08-26 23:40:12,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 640 flow [2023-08-26 23:40:12,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 608 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 23:40:12,617 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 449 flow [2023-08-26 23:40:12,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=449, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2023-08-26 23:40:12,618 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2023-08-26 23:40:12,618 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 449 flow [2023-08-26 23:40:12,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:12,619 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:12,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-26 23:40:12,619 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:12,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:12,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2136564266, now seen corresponding path program 6 times [2023-08-26 23:40:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841145651] [2023-08-26 23:40:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:12,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:12,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:12,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841145651] [2023-08-26 23:40:12,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841145651] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:40:12,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:40:12,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 23:40:12,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511272059] [2023-08-26 23:40:12,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:40:12,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:40:12,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:12,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:40:12,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:40:12,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 719 [2023-08-26 23:40:12,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:12,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 719 [2023-08-26 23:40:12,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:12,920 INFO L124 PetriNetUnfolderBase]: 205/373 cut-off events. [2023-08-26 23:40:12,920 INFO L125 PetriNetUnfolderBase]: For 1879/1879 co-relation queries the response was YES. [2023-08-26 23:40:12,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 373 events. 205/373 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1352 event pairs, 74 based on Foata normal form. 4/377 useless extension candidates. Maximal degree in co-relation 1852. Up to 263 conditions per place. [2023-08-26 23:40:12,923 INFO L140 encePairwiseOnDemand]: 714/719 looper letters, 47 selfloop transitions, 13 changer transitions 1/61 dead transitions. [2023-08-26 23:40:12,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 61 transitions, 626 flow [2023-08-26 23:40:12,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:40:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:40:12,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1347 transitions. [2023-08-26 23:40:12,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37468706536856744 [2023-08-26 23:40:12,925 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1347 transitions. [2023-08-26 23:40:12,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1347 transitions. [2023-08-26 23:40:12,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:12,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1347 transitions. [2023-08-26 23:40:12,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.4) internal successors, (1347), 5 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,931 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,931 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 449 flow. Second operand 5 states and 1347 transitions. [2023-08-26 23:40:12,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 61 transitions, 626 flow [2023-08-26 23:40:12,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 61 transitions, 613 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 23:40:12,937 INFO L231 Difference]: Finished difference. Result has 73 places, 49 transitions, 451 flow [2023-08-26 23:40:12,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=451, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2023-08-26 23:40:12,937 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2023-08-26 23:40:12,937 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 451 flow [2023-08-26 23:40:12,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:12,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:12,938 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:12,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-26 23:40:12,938 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:12,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:12,938 INFO L85 PathProgramCache]: Analyzing trace with hash 218852231, now seen corresponding path program 1 times [2023-08-26 23:40:12,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:12,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416103338] [2023-08-26 23:40:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:12,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:13,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:13,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416103338] [2023-08-26 23:40:13,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416103338] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:13,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678359488] [2023-08-26 23:40:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:13,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:13,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:13,941 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) [2023-08-26 23:40:13,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 23:40:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:14,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-26 23:40:14,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:14,632 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 143 treesize of output 91 [2023-08-26 23:40:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:14,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:40:16,792 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:40:16,793 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 366 treesize of output 242 [2023-08-26 23:40:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:17,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678359488] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:40:17,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:40:17,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-08-26 23:40:17,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955761846] [2023-08-26 23:40:17,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:40:17,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 23:40:17,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 23:40:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-08-26 23:40:17,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:40:17,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 451 flow. Second operand has 21 states, 21 states have (on average 236.04761904761904) internal successors, (4957), 21 states have internal predecessors, (4957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:17,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:17,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:40:17,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:19,548 INFO L124 PetriNetUnfolderBase]: 402/776 cut-off events. [2023-08-26 23:40:19,548 INFO L125 PetriNetUnfolderBase]: For 3755/3755 co-relation queries the response was YES. [2023-08-26 23:40:19,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3746 conditions, 776 events. 402/776 cut-off events. For 3755/3755 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3911 event pairs, 36 based on Foata normal form. 8/784 useless extension candidates. Maximal degree in co-relation 3712. Up to 254 conditions per place. [2023-08-26 23:40:19,554 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 97 selfloop transitions, 54 changer transitions 25/176 dead transitions. [2023-08-26 23:40:19,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 176 transitions, 1520 flow [2023-08-26 23:40:19,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 23:40:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 23:40:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5518 transitions. [2023-08-26 23:40:19,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3336759992743545 [2023-08-26 23:40:19,561 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5518 transitions. [2023-08-26 23:40:19,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5518 transitions. [2023-08-26 23:40:19,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:19,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5518 transitions. [2023-08-26 23:40:19,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 239.91304347826087) internal successors, (5518), 23 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:19,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:19,611 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:19,612 INFO L175 Difference]: Start difference. First operand has 73 places, 49 transitions, 451 flow. Second operand 23 states and 5518 transitions. [2023-08-26 23:40:19,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 176 transitions, 1520 flow [2023-08-26 23:40:19,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 176 transitions, 1456 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-26 23:40:19,621 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 970 flow [2023-08-26 23:40:19,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=970, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2023-08-26 23:40:19,622 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2023-08-26 23:40:19,622 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 970 flow [2023-08-26 23:40:19,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 236.04761904761904) internal successors, (4957), 21 states have internal predecessors, (4957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:19,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:19,623 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:19,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:19,829 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,SelfDestructingSolverStorable27 [2023-08-26 23:40:19,829 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:19,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:19,830 INFO L85 PathProgramCache]: Analyzing trace with hash 161246645, now seen corresponding path program 2 times [2023-08-26 23:40:19,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:19,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613190093] [2023-08-26 23:40:19,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:19,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:20,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613190093] [2023-08-26 23:40:20,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613190093] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:20,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18500743] [2023-08-26 23:40:20,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:40:20,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:20,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:20,836 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) [2023-08-26 23:40:20,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 23:40:21,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 23:40:21,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:40:21,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:40:21,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:21,295 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 173 treesize of output 113 [2023-08-26 23:40:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:21,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:40:23,857 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:40:23,857 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 372 treesize of output 268 [2023-08-26 23:40:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:24,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18500743] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:40:24,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:40:24,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-26 23:40:24,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691465858] [2023-08-26 23:40:24,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:40:24,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 23:40:24,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:24,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 23:40:24,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-08-26 23:40:24,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:40:24,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 970 flow. Second operand has 20 states, 20 states have (on average 236.05) internal successors, (4721), 20 states have internal predecessors, (4721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:24,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:24,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:40:24,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:26,326 INFO L124 PetriNetUnfolderBase]: 446/930 cut-off events. [2023-08-26 23:40:26,327 INFO L125 PetriNetUnfolderBase]: For 5253/5253 co-relation queries the response was YES. [2023-08-26 23:40:26,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 930 events. 446/930 cut-off events. For 5253/5253 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5189 event pairs, 106 based on Foata normal form. 6/936 useless extension candidates. Maximal degree in co-relation 4918. Up to 528 conditions per place. [2023-08-26 23:40:26,334 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 113 selfloop transitions, 53 changer transitions 14/180 dead transitions. [2023-08-26 23:40:26,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 180 transitions, 1875 flow [2023-08-26 23:40:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 23:40:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 23:40:26,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4319 transitions. [2023-08-26 23:40:26,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33371967238448463 [2023-08-26 23:40:26,340 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4319 transitions. [2023-08-26 23:40:26,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4319 transitions. [2023-08-26 23:40:26,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:26,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4319 transitions. [2023-08-26 23:40:26,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 239.94444444444446) internal successors, (4319), 18 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:26,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:26,355 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:26,355 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 970 flow. Second operand 18 states and 4319 transitions. [2023-08-26 23:40:26,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 180 transitions, 1875 flow [2023-08-26 23:40:26,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 180 transitions, 1512 flow, removed 163 selfloop flow, removed 8 redundant places. [2023-08-26 23:40:26,379 INFO L231 Difference]: Finished difference. Result has 109 places, 115 transitions, 1111 flow [2023-08-26 23:40:26,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1111, PETRI_PLACES=109, PETRI_TRANSITIONS=115} [2023-08-26 23:40:26,380 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2023-08-26 23:40:26,380 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 115 transitions, 1111 flow [2023-08-26 23:40:26,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 236.05) internal successors, (4721), 20 states have internal predecessors, (4721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:26,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:26,381 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:26,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:26,587 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,SelfDestructingSolverStorable28 [2023-08-26 23:40:26,588 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:26,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash 117465497, now seen corresponding path program 3 times [2023-08-26 23:40:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:26,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579143810] [2023-08-26 23:40:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:26,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:40:27,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:27,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579143810] [2023-08-26 23:40:27,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579143810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:27,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582751291] [2023-08-26 23:40:27,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 23:40:27,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:27,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:27,873 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) [2023-08-26 23:40:27,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 23:40:28,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 23:40:28,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:40:28,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-26 23:40:28,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:28,386 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 174 treesize of output 114 [2023-08-26 23:40:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:28,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:40:30,914 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:40:30,914 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 445 treesize of output 317 [2023-08-26 23:40:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:31,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582751291] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:40:31,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:40:31,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 25 [2023-08-26 23:40:31,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715020084] [2023-08-26 23:40:31,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:40:31,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 23:40:31,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:31,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 23:40:31,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2023-08-26 23:40:31,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-26 23:40:31,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 1111 flow. Second operand has 26 states, 26 states have (on average 218.92307692307693) internal successors, (5692), 26 states have internal predecessors, (5692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:31,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:31,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-26 23:40:31,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:36,556 INFO L124 PetriNetUnfolderBase]: 1189/2656 cut-off events. [2023-08-26 23:40:36,557 INFO L125 PetriNetUnfolderBase]: For 11712/11712 co-relation queries the response was YES. [2023-08-26 23:40:36,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12269 conditions, 2656 events. 1189/2656 cut-off events. For 11712/11712 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 20269 event pairs, 178 based on Foata normal form. 8/2664 useless extension candidates. Maximal degree in co-relation 12226. Up to 505 conditions per place. [2023-08-26 23:40:36,574 INFO L140 encePairwiseOnDemand]: 709/719 looper letters, 270 selfloop transitions, 158 changer transitions 22/450 dead transitions. [2023-08-26 23:40:36,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 450 transitions, 4749 flow [2023-08-26 23:40:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-26 23:40:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-26 23:40:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8904 transitions. [2023-08-26 23:40:36,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30959666203059805 [2023-08-26 23:40:36,585 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8904 transitions. [2023-08-26 23:40:36,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8904 transitions. [2023-08-26 23:40:36,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:36,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8904 transitions. [2023-08-26 23:40:36,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 222.6) internal successors, (8904), 40 states have internal predecessors, (8904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:36,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 719.0) internal successors, (29479), 41 states have internal predecessors, (29479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:36,617 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 719.0) internal successors, (29479), 41 states have internal predecessors, (29479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:36,617 INFO L175 Difference]: Start difference. First operand has 109 places, 115 transitions, 1111 flow. Second operand 40 states and 8904 transitions. [2023-08-26 23:40:36,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 450 transitions, 4749 flow [2023-08-26 23:40:36,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 450 transitions, 4486 flow, removed 102 selfloop flow, removed 5 redundant places. [2023-08-26 23:40:36,685 INFO L231 Difference]: Finished difference. Result has 167 places, 243 transitions, 2868 flow [2023-08-26 23:40:36,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2868, PETRI_PLACES=167, PETRI_TRANSITIONS=243} [2023-08-26 23:40:36,685 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2023-08-26 23:40:36,686 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 243 transitions, 2868 flow [2023-08-26 23:40:36,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 218.92307692307693) internal successors, (5692), 26 states have internal predecessors, (5692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:36,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:36,687 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:36,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:36,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:36,896 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:36,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:36,896 INFO L85 PathProgramCache]: Analyzing trace with hash 639755987, now seen corresponding path program 4 times [2023-08-26 23:40:36,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:36,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185686874] [2023-08-26 23:40:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:36,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:37,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185686874] [2023-08-26 23:40:37,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185686874] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843059300] [2023-08-26 23:40:37,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 23:40:37,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:37,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:37,728 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) [2023-08-26 23:40:37,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 23:40:37,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 23:40:37,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:40:37,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-26 23:40:37,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:38,379 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 80 [2023-08-26 23:40:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:38,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:40:39,967 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:40:39,968 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 182 [2023-08-26 23:40:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:40,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843059300] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:40:40,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:40:40,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-26 23:40:40,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421348138] [2023-08-26 23:40:40,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:40:40,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 23:40:40,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:40,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 23:40:40,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-08-26 23:40:40,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:40:40,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 243 transitions, 2868 flow. Second operand has 20 states, 20 states have (on average 235.95) internal successors, (4719), 20 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:40,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:40,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:40:40,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:42,177 INFO L124 PetriNetUnfolderBase]: 1561/3590 cut-off events. [2023-08-26 23:40:42,177 INFO L125 PetriNetUnfolderBase]: For 24868/24868 co-relation queries the response was YES. [2023-08-26 23:40:42,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19105 conditions, 3590 events. 1561/3590 cut-off events. For 24868/24868 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 30013 event pairs, 48 based on Foata normal form. 18/3608 useless extension candidates. Maximal degree in co-relation 19037. Up to 970 conditions per place. [2023-08-26 23:40:42,213 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 270 selfloop transitions, 131 changer transitions 25/426 dead transitions. [2023-08-26 23:40:42,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 426 transitions, 5469 flow [2023-08-26 23:40:42,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-26 23:40:42,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-26 23:40:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4782 transitions. [2023-08-26 23:40:42,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3325452016689847 [2023-08-26 23:40:42,219 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4782 transitions. [2023-08-26 23:40:42,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4782 transitions. [2023-08-26 23:40:42,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:42,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4782 transitions. [2023-08-26 23:40:42,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 239.1) internal successors, (4782), 20 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:42,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 719.0) internal successors, (15099), 21 states have internal predecessors, (15099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:42,235 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 719.0) internal successors, (15099), 21 states have internal predecessors, (15099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:42,235 INFO L175 Difference]: Start difference. First operand has 167 places, 243 transitions, 2868 flow. Second operand 20 states and 4782 transitions. [2023-08-26 23:40:42,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 426 transitions, 5469 flow [2023-08-26 23:40:42,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 426 transitions, 5055 flow, removed 184 selfloop flow, removed 9 redundant places. [2023-08-26 23:40:42,445 INFO L231 Difference]: Finished difference. Result has 183 places, 281 transitions, 3453 flow [2023-08-26 23:40:42,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=2579, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3453, PETRI_PLACES=183, PETRI_TRANSITIONS=281} [2023-08-26 23:40:42,446 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2023-08-26 23:40:42,446 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 281 transitions, 3453 flow [2023-08-26 23:40:42,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 235.95) internal successors, (4719), 20 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:42,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:42,447 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:42,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:42,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-26 23:40:42,656 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:42,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1948502667, now seen corresponding path program 5 times [2023-08-26 23:40:42,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:42,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147324497] [2023-08-26 23:40:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:42,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:40:44,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:44,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147324497] [2023-08-26 23:40:44,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147324497] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:44,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223590484] [2023-08-26 23:40:44,057 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 23:40:44,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:44,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:44,058 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) [2023-08-26 23:40:44,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 23:40:44,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 23:40:44,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:40:44,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-26 23:40:44,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:44,493 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 77 treesize of output 49 [2023-08-26 23:40:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:44,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:40:45,704 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:40:45,705 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 398 treesize of output 254 [2023-08-26 23:40:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:46,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223590484] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:40:46,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:40:46,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 24 [2023-08-26 23:40:46,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213753517] [2023-08-26 23:40:46,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:40:46,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 23:40:46,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:46,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 23:40:46,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-08-26 23:40:46,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-26 23:40:46,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 281 transitions, 3453 flow. Second operand has 25 states, 25 states have (on average 218.76) internal successors, (5469), 25 states have internal predecessors, (5469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:46,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:46,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-26 23:40:46,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:40:48,291 INFO L124 PetriNetUnfolderBase]: 1555/3524 cut-off events. [2023-08-26 23:40:48,291 INFO L125 PetriNetUnfolderBase]: For 27641/27641 co-relation queries the response was YES. [2023-08-26 23:40:48,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19637 conditions, 3524 events. 1555/3524 cut-off events. For 27641/27641 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 29046 event pairs, 364 based on Foata normal form. 2/3526 useless extension candidates. Maximal degree in co-relation 19564. Up to 989 conditions per place. [2023-08-26 23:40:48,324 INFO L140 encePairwiseOnDemand]: 709/719 looper letters, 314 selfloop transitions, 164 changer transitions 6/484 dead transitions. [2023-08-26 23:40:48,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 484 transitions, 6480 flow [2023-08-26 23:40:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 23:40:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 23:40:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6439 transitions. [2023-08-26 23:40:48,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.308810129010599 [2023-08-26 23:40:48,332 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 6439 transitions. [2023-08-26 23:40:48,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 6439 transitions. [2023-08-26 23:40:48,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:40:48,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 6439 transitions. [2023-08-26 23:40:48,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 222.0344827586207) internal successors, (6439), 29 states have internal predecessors, (6439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:48,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 719.0) internal successors, (21570), 30 states have internal predecessors, (21570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:48,354 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 719.0) internal successors, (21570), 30 states have internal predecessors, (21570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:48,354 INFO L175 Difference]: Start difference. First operand has 183 places, 281 transitions, 3453 flow. Second operand 29 states and 6439 transitions. [2023-08-26 23:40:48,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 484 transitions, 6480 flow [2023-08-26 23:40:48,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 484 transitions, 5858 flow, removed 206 selfloop flow, removed 8 redundant places. [2023-08-26 23:40:48,614 INFO L231 Difference]: Finished difference. Result has 210 places, 337 transitions, 4177 flow [2023-08-26 23:40:48,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4177, PETRI_PLACES=210, PETRI_TRANSITIONS=337} [2023-08-26 23:40:48,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2023-08-26 23:40:48,615 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 337 transitions, 4177 flow [2023-08-26 23:40:48,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 218.76) internal successors, (5469), 25 states have internal predecessors, (5469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:48,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:40:48,616 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:40:48,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 23:40:48,816 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,SelfDestructingSolverStorable31 [2023-08-26 23:40:48,816 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:40:48,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:40:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1353005273, now seen corresponding path program 6 times [2023-08-26 23:40:48,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:40:48,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648250727] [2023-08-26 23:40:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:40:48,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:40:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:40:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:49,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:40:49,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648250727] [2023-08-26 23:40:49,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648250727] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:40:49,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083720109] [2023-08-26 23:40:49,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 23:40:49,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:40:49,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:40:49,783 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) [2023-08-26 23:40:49,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 23:40:49,928 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 23:40:49,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:40:49,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-26 23:40:49,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:40:49,940 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 44 treesize of output 42 [2023-08-26 23:40:50,098 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 87 treesize of output 77 [2023-08-26 23:40:50,323 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 203 treesize of output 131 [2023-08-26 23:40:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:50,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:40:53,227 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:40:53,228 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 463 treesize of output 359 [2023-08-26 23:40:53,239 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 270 treesize of output 266 [2023-08-26 23:40:53,249 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 266 treesize of output 264 [2023-08-26 23:40:53,259 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 264 treesize of output 260 [2023-08-26 23:40:53,269 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 260 treesize of output 258 [2023-08-26 23:40:53,278 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 258 treesize of output 254 [2023-08-26 23:40:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:40:53,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083720109] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:40:53,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:40:53,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-26 23:40:53,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800870809] [2023-08-26 23:40:53,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:40:53,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 23:40:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:40:53,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 23:40:53,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=568, Unknown=5, NotChecked=0, Total=650 [2023-08-26 23:40:53,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 719 [2023-08-26 23:40:53,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 337 transitions, 4177 flow. Second operand has 26 states, 26 states have (on average 231.73076923076923) internal successors, (6025), 26 states have internal predecessors, (6025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:40:53,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:40:53,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 719 [2023-08-26 23:40:53,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:41:02,309 INFO L124 PetriNetUnfolderBase]: 1691/3846 cut-off events. [2023-08-26 23:41:02,309 INFO L125 PetriNetUnfolderBase]: For 27289/27289 co-relation queries the response was YES. [2023-08-26 23:41:02,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20603 conditions, 3846 events. 1691/3846 cut-off events. For 27289/27289 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 32397 event pairs, 304 based on Foata normal form. 14/3860 useless extension candidates. Maximal degree in co-relation 20523. Up to 862 conditions per place. [2023-08-26 23:41:02,351 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 304 selfloop transitions, 275 changer transitions 20/599 dead transitions. [2023-08-26 23:41:02,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 599 transitions, 8130 flow [2023-08-26 23:41:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 23:41:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 23:41:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6833 transitions. [2023-08-26 23:41:02,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3277061052227711 [2023-08-26 23:41:02,363 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 6833 transitions. [2023-08-26 23:41:02,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 6833 transitions. [2023-08-26 23:41:02,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:41:02,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 6833 transitions. [2023-08-26 23:41:02,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 235.6206896551724) internal successors, (6833), 29 states have internal predecessors, (6833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:02,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 719.0) internal successors, (21570), 30 states have internal predecessors, (21570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:02,383 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 719.0) internal successors, (21570), 30 states have internal predecessors, (21570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:02,384 INFO L175 Difference]: Start difference. First operand has 210 places, 337 transitions, 4177 flow. Second operand 29 states and 6833 transitions. [2023-08-26 23:41:02,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 599 transitions, 8130 flow [2023-08-26 23:41:02,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 599 transitions, 7762 flow, removed 126 selfloop flow, removed 6 redundant places. [2023-08-26 23:41:02,712 INFO L231 Difference]: Finished difference. Result has 247 places, 455 transitions, 6426 flow [2023-08-26 23:41:02,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=3897, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6426, PETRI_PLACES=247, PETRI_TRANSITIONS=455} [2023-08-26 23:41:02,712 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2023-08-26 23:41:02,713 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 455 transitions, 6426 flow [2023-08-26 23:41:02,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 231.73076923076923) internal successors, (6025), 26 states have internal predecessors, (6025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:02,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:41:02,713 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:41:02,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 23:41:02,914 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,SelfDestructingSolverStorable32 [2023-08-26 23:41:02,914 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:41:02,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:41:02,915 INFO L85 PathProgramCache]: Analyzing trace with hash 795051939, now seen corresponding path program 7 times [2023-08-26 23:41:02,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:41:02,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340353608] [2023-08-26 23:41:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:41:02,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:41:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:41:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:03,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:41:03,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340353608] [2023-08-26 23:41:03,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340353608] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:41:03,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994582662] [2023-08-26 23:41:03,639 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 23:41:03,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:03,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:41:03,642 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) [2023-08-26 23:41:03,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 23:41:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:41:03,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-26 23:41:03,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:41:04,153 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 185 treesize of output 117 [2023-08-26 23:41:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:04,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:41:05,945 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:41:05,945 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 474 treesize of output 322 [2023-08-26 23:41:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994582662] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:41:06,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:41:06,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-08-26 23:41:06,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285671779] [2023-08-26 23:41:06,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:41:06,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 23:41:06,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:41:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 23:41:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-08-26 23:41:06,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:41:06,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 455 transitions, 6426 flow. Second operand has 21 states, 21 states have (on average 235.95238095238096) internal successors, (4955), 21 states have internal predecessors, (4955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:06,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:41:06,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:41:06,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:41:09,391 INFO L124 PetriNetUnfolderBase]: 1797/4060 cut-off events. [2023-08-26 23:41:09,392 INFO L125 PetriNetUnfolderBase]: For 35732/35732 co-relation queries the response was YES. [2023-08-26 23:41:09,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24066 conditions, 4060 events. 1797/4060 cut-off events. For 35732/35732 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 34312 event pairs, 310 based on Foata normal form. 10/4070 useless extension candidates. Maximal degree in co-relation 23970. Up to 1652 conditions per place. [2023-08-26 23:41:09,427 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 254 selfloop transitions, 296 changer transitions 22/572 dead transitions. [2023-08-26 23:41:09,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 572 transitions, 8908 flow [2023-08-26 23:41:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-26 23:41:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-26 23:41:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4783 transitions. [2023-08-26 23:41:09,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3326147426981919 [2023-08-26 23:41:09,433 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4783 transitions. [2023-08-26 23:41:09,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4783 transitions. [2023-08-26 23:41:09,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:41:09,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4783 transitions. [2023-08-26 23:41:09,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 239.15) internal successors, (4783), 20 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:09,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 719.0) internal successors, (15099), 21 states have internal predecessors, (15099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:09,446 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 719.0) internal successors, (15099), 21 states have internal predecessors, (15099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:09,446 INFO L175 Difference]: Start difference. First operand has 247 places, 455 transitions, 6426 flow. Second operand 20 states and 4783 transitions. [2023-08-26 23:41:09,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 572 transitions, 8908 flow [2023-08-26 23:41:09,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 572 transitions, 8385 flow, removed 166 selfloop flow, removed 5 redundant places. [2023-08-26 23:41:09,862 INFO L231 Difference]: Finished difference. Result has 270 places, 504 transitions, 7624 flow [2023-08-26 23:41:09,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=5934, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7624, PETRI_PLACES=270, PETRI_TRANSITIONS=504} [2023-08-26 23:41:09,862 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2023-08-26 23:41:09,862 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 504 transitions, 7624 flow [2023-08-26 23:41:09,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 235.95238095238096) internal successors, (4955), 21 states have internal predecessors, (4955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:09,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:41:09,863 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:41:09,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 23:41:10,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:10,069 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:41:10,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:41:10,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1210002611, now seen corresponding path program 8 times [2023-08-26 23:41:10,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:41:10,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233403991] [2023-08-26 23:41:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:41:10,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:41:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:41:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:41:11,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:41:11,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233403991] [2023-08-26 23:41:11,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233403991] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:41:11,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790986190] [2023-08-26 23:41:11,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:41:11,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:11,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:41:11,430 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) [2023-08-26 23:41:11,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 23:41:11,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 23:41:11,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:41:11,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-26 23:41:11,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:41:11,850 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 194 treesize of output 126 [2023-08-26 23:41:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:12,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:41:14,046 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:41:14,047 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 471 treesize of output 327 [2023-08-26 23:41:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:14,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790986190] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:41:14,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:41:14,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 23 [2023-08-26 23:41:14,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372191752] [2023-08-26 23:41:14,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:41:14,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 23:41:14,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:41:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 23:41:14,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-08-26 23:41:14,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-26 23:41:14,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 504 transitions, 7624 flow. Second operand has 24 states, 24 states have (on average 218.875) internal successors, (5253), 24 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) [2023-08-26 23:41:14,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:41:14,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-26 23:41:14,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:41:24,393 INFO L124 PetriNetUnfolderBase]: 1827/4118 cut-off events. [2023-08-26 23:41:24,393 INFO L125 PetriNetUnfolderBase]: For 44496/44496 co-relation queries the response was YES. [2023-08-26 23:41:24,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25632 conditions, 4118 events. 1827/4118 cut-off events. For 44496/44496 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 34871 event pairs, 310 based on Foata normal form. 6/4124 useless extension candidates. Maximal degree in co-relation 25526. Up to 830 conditions per place. [2023-08-26 23:41:24,430 INFO L140 encePairwiseOnDemand]: 708/719 looper letters, 418 selfloop transitions, 320 changer transitions 36/774 dead transitions. [2023-08-26 23:41:24,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 774 transitions, 11440 flow [2023-08-26 23:41:24,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-26 23:41:24,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-26 23:41:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 12196 transitions. [2023-08-26 23:41:24,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.308408142622329 [2023-08-26 23:41:24,450 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 12196 transitions. [2023-08-26 23:41:24,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 12196 transitions. [2023-08-26 23:41:24,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:41:24,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 12196 transitions. [2023-08-26 23:41:24,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 221.74545454545455) internal successors, (12196), 55 states have internal predecessors, (12196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:24,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 719.0) internal successors, (40264), 56 states have internal predecessors, (40264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:24,493 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 719.0) internal successors, (40264), 56 states have internal predecessors, (40264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:24,494 INFO L175 Difference]: Start difference. First operand has 270 places, 504 transitions, 7624 flow. Second operand 55 states and 12196 transitions. [2023-08-26 23:41:24,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 774 transitions, 11440 flow [2023-08-26 23:41:25,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 774 transitions, 10895 flow, removed 166 selfloop flow, removed 8 redundant places. [2023-08-26 23:41:25,113 INFO L231 Difference]: Finished difference. Result has 328 places, 525 transitions, 8240 flow [2023-08-26 23:41:25,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=7157, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=8240, PETRI_PLACES=328, PETRI_TRANSITIONS=525} [2023-08-26 23:41:25,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2023-08-26 23:41:25,114 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 525 transitions, 8240 flow [2023-08-26 23:41:25,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 218.875) internal successors, (5253), 24 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) [2023-08-26 23:41:25,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:41:25,114 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:41:25,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-26 23:41:25,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:25,315 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:41:25,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:41:25,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1811515811, now seen corresponding path program 9 times [2023-08-26 23:41:25,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:41:25,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583819485] [2023-08-26 23:41:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:41:25,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:41:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:41:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:26,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:41:26,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583819485] [2023-08-26 23:41:26,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583819485] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:41:26,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716553131] [2023-08-26 23:41:26,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 23:41:26,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:26,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:41:26,198 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) [2023-08-26 23:41:26,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 23:41:26,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 23:41:26,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:41:26,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-26 23:41:26,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:41:26,612 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 173 treesize of output 113 [2023-08-26 23:41:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:26,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:41:28,614 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:41:28,614 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 382 treesize of output 278 [2023-08-26 23:41:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:29,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716553131] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:41:29,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:41:29,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-08-26 23:41:29,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265522187] [2023-08-26 23:41:29,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:41:29,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 23:41:29,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:41:29,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 23:41:29,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-08-26 23:41:29,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:41:29,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 525 transitions, 8240 flow. Second operand has 21 states, 21 states have (on average 236.04761904761904) internal successors, (4957), 21 states have internal predecessors, (4957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:29,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:41:29,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:41:29,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:41:32,922 INFO L124 PetriNetUnfolderBase]: 1945/4376 cut-off events. [2023-08-26 23:41:32,922 INFO L125 PetriNetUnfolderBase]: For 61974/61974 co-relation queries the response was YES. [2023-08-26 23:41:32,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29030 conditions, 4376 events. 1945/4376 cut-off events. For 61974/61974 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 37634 event pairs, 328 based on Foata normal form. 22/4398 useless extension candidates. Maximal degree in co-relation 28912. Up to 1780 conditions per place. [2023-08-26 23:41:32,966 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 372 selfloop transitions, 281 changer transitions 27/680 dead transitions. [2023-08-26 23:41:32,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 680 transitions, 11451 flow [2023-08-26 23:41:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 23:41:32,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 23:41:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5044 transitions. [2023-08-26 23:41:32,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3340618584012186 [2023-08-26 23:41:32,971 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5044 transitions. [2023-08-26 23:41:32,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5044 transitions. [2023-08-26 23:41:32,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:41:32,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5044 transitions. [2023-08-26 23:41:32,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 240.1904761904762) internal successors, (5044), 21 states have internal predecessors, (5044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:32,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 719.0) internal successors, (15818), 22 states have internal predecessors, (15818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:32,986 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 719.0) internal successors, (15818), 22 states have internal predecessors, (15818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:32,986 INFO L175 Difference]: Start difference. First operand has 328 places, 525 transitions, 8240 flow. Second operand 21 states and 5044 transitions. [2023-08-26 23:41:32,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 680 transitions, 11451 flow [2023-08-26 23:41:33,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 680 transitions, 11114 flow, removed 116 selfloop flow, removed 23 redundant places. [2023-08-26 23:41:33,593 INFO L231 Difference]: Finished difference. Result has 328 places, 567 transitions, 9439 flow [2023-08-26 23:41:33,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=7927, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9439, PETRI_PLACES=328, PETRI_TRANSITIONS=567} [2023-08-26 23:41:33,594 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2023-08-26 23:41:33,594 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 567 transitions, 9439 flow [2023-08-26 23:41:33,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 236.04761904761904) internal successors, (4957), 21 states have internal predecessors, (4957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:33,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:41:33,594 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:41:33,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-26 23:41:33,795 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,SelfDestructingSolverStorable35 [2023-08-26 23:41:33,795 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:41:33,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:41:33,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1339197406, now seen corresponding path program 10 times [2023-08-26 23:41:33,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:41:33,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956324756] [2023-08-26 23:41:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:41:33,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:41:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:41:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:41:34,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:41:34,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956324756] [2023-08-26 23:41:34,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956324756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:41:34,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860942563] [2023-08-26 23:41:34,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 23:41:34,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:34,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:41:34,773 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) [2023-08-26 23:41:34,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 23:41:34,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 23:41:34,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:41:34,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:41:34,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:41:35,191 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 91 treesize of output 59 [2023-08-26 23:41:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:35,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:41:35,751 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:41:35,751 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 87 treesize of output 55 [2023-08-26 23:41:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:35,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860942563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:41:35,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:41:35,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 23 [2023-08-26 23:41:35,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741741952] [2023-08-26 23:41:35,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:41:35,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 23:41:35,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:41:35,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 23:41:35,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2023-08-26 23:41:35,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 719 [2023-08-26 23:41:35,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 567 transitions, 9439 flow. Second operand has 23 states, 23 states have (on average 229.95652173913044) internal successors, (5289), 23 states have internal predecessors, (5289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:35,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:41:35,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 719 [2023-08-26 23:41:35,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:41:38,616 INFO L124 PetriNetUnfolderBase]: 1914/4295 cut-off events. [2023-08-26 23:41:38,616 INFO L125 PetriNetUnfolderBase]: For 62756/62756 co-relation queries the response was YES. [2023-08-26 23:41:38,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29808 conditions, 4295 events. 1914/4295 cut-off events. For 62756/62756 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 36732 event pairs, 456 based on Foata normal form. 12/4307 useless extension candidates. Maximal degree in co-relation 29689. Up to 1127 conditions per place. [2023-08-26 23:41:38,656 INFO L140 encePairwiseOnDemand]: 709/719 looper letters, 517 selfloop transitions, 240 changer transitions 6/763 dead transitions. [2023-08-26 23:41:38,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 763 transitions, 13054 flow [2023-08-26 23:41:38,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-26 23:41:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-26 23:41:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7022 transitions. [2023-08-26 23:41:38,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255447380621233 [2023-08-26 23:41:38,663 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7022 transitions. [2023-08-26 23:41:38,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7022 transitions. [2023-08-26 23:41:38,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:41:38,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7022 transitions. [2023-08-26 23:41:38,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 234.06666666666666) internal successors, (7022), 30 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:38,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:38,683 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:38,683 INFO L175 Difference]: Start difference. First operand has 328 places, 567 transitions, 9439 flow. Second operand 30 states and 7022 transitions. [2023-08-26 23:41:38,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 763 transitions, 13054 flow [2023-08-26 23:41:39,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 763 transitions, 12365 flow, removed 278 selfloop flow, removed 12 redundant places. [2023-08-26 23:41:39,302 INFO L231 Difference]: Finished difference. Result has 350 places, 631 transitions, 10597 flow [2023-08-26 23:41:39,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=8944, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10597, PETRI_PLACES=350, PETRI_TRANSITIONS=631} [2023-08-26 23:41:39,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2023-08-26 23:41:39,303 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 631 transitions, 10597 flow [2023-08-26 23:41:39,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 229.95652173913044) internal successors, (5289), 23 states have internal predecessors, (5289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:39,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:41:39,303 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:41:39,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-26 23:41:39,504 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,SelfDestructingSolverStorable36 [2023-08-26 23:41:39,504 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:41:39,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:41:39,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1089490252, now seen corresponding path program 11 times [2023-08-26 23:41:39,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:41:39,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141934934] [2023-08-26 23:41:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:41:39,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:41:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:41:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:39,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:41:39,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141934934] [2023-08-26 23:41:39,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141934934] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:41:39,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432516495] [2023-08-26 23:41:39,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 23:41:39,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:39,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:41:39,956 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) [2023-08-26 23:41:39,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 23:41:40,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 23:41:40,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:41:40,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-26 23:41:40,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:41:40,267 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 84 treesize of output 52 [2023-08-26 23:41:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:40,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:41:40,463 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:41:40,463 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 44 treesize of output 28 [2023-08-26 23:41:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:40,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432516495] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:41:40,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:41:40,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-26 23:41:40,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867160562] [2023-08-26 23:41:40,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:41:40,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 23:41:40,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:41:40,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 23:41:40,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-26 23:41:40,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:41:40,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 631 transitions, 10597 flow. Second operand has 17 states, 17 states have (on average 247.11764705882354) internal successors, (4201), 17 states have internal predecessors, (4201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:40,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:41:40,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:41:40,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:41:41,984 INFO L124 PetriNetUnfolderBase]: 2035/4555 cut-off events. [2023-08-26 23:41:41,984 INFO L125 PetriNetUnfolderBase]: For 60020/60020 co-relation queries the response was YES. [2023-08-26 23:41:42,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31563 conditions, 4555 events. 2035/4555 cut-off events. For 60020/60020 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 38816 event pairs, 480 based on Foata normal form. 52/4607 useless extension candidates. Maximal degree in co-relation 31441. Up to 1776 conditions per place. [2023-08-26 23:41:42,030 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 549 selfloop transitions, 181 changer transitions 0/730 dead transitions. [2023-08-26 23:41:42,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 730 transitions, 13363 flow [2023-08-26 23:41:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 23:41:42,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 23:41:42,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2275 transitions. [2023-08-26 23:41:42,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515685365476742 [2023-08-26 23:41:42,033 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2275 transitions. [2023-08-26 23:41:42,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2275 transitions. [2023-08-26 23:41:42,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:41:42,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2275 transitions. [2023-08-26 23:41:42,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 252.77777777777777) internal successors, (2275), 9 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:42,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 719.0) internal successors, (7190), 10 states have internal predecessors, (7190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:42,040 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 719.0) internal successors, (7190), 10 states have internal predecessors, (7190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:42,040 INFO L175 Difference]: Start difference. First operand has 350 places, 631 transitions, 10597 flow. Second operand 9 states and 2275 transitions. [2023-08-26 23:41:42,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 730 transitions, 13363 flow [2023-08-26 23:41:42,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 730 transitions, 13186 flow, removed 57 selfloop flow, removed 11 redundant places. [2023-08-26 23:41:42,702 INFO L231 Difference]: Finished difference. Result has 350 places, 651 transitions, 11323 flow [2023-08-26 23:41:42,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=10436, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11323, PETRI_PLACES=350, PETRI_TRANSITIONS=651} [2023-08-26 23:41:42,703 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2023-08-26 23:41:42,703 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 651 transitions, 11323 flow [2023-08-26 23:41:42,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 247.11764705882354) internal successors, (4201), 17 states have internal predecessors, (4201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:42,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:41:42,704 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:41:42,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-26 23:41:42,904 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,SelfDestructingSolverStorable37 [2023-08-26 23:41:42,905 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:41:42,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:41:42,905 INFO L85 PathProgramCache]: Analyzing trace with hash -160917204, now seen corresponding path program 12 times [2023-08-26 23:41:42,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:41:42,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089971321] [2023-08-26 23:41:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:41:42,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:41:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:41:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:43,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:41:43,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089971321] [2023-08-26 23:41:43,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089971321] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:41:43,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328351702] [2023-08-26 23:41:43,459 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 23:41:43,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:43,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:41:43,461 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) [2023-08-26 23:41:43,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-26 23:41:43,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 23:41:43,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:41:43,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:41:43,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:41:43,908 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 105 treesize of output 65 [2023-08-26 23:41:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:43,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:41:44,177 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 23:41:44,178 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 40 treesize of output 19 [2023-08-26 23:41:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:44,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328351702] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:41:44,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:41:44,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2023-08-26 23:41:44,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043970265] [2023-08-26 23:41:44,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:41:44,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 23:41:44,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:41:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 23:41:44,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-26 23:41:44,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:41:44,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 651 transitions, 11323 flow. Second operand has 16 states, 16 states have (on average 247.125) internal successors, (3954), 16 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:44,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:41:44,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:41:44,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:41:46,013 INFO L124 PetriNetUnfolderBase]: 2063/4607 cut-off events. [2023-08-26 23:41:46,013 INFO L125 PetriNetUnfolderBase]: For 62019/62019 co-relation queries the response was YES. [2023-08-26 23:41:46,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32569 conditions, 4607 events. 2063/4607 cut-off events. For 62019/62019 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 39385 event pairs, 313 based on Foata normal form. 36/4643 useless extension candidates. Maximal degree in co-relation 32446. Up to 890 conditions per place. [2023-08-26 23:41:46,058 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 517 selfloop transitions, 232 changer transitions 2/751 dead transitions. [2023-08-26 23:41:46,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 751 transitions, 14122 flow [2023-08-26 23:41:46,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 23:41:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 23:41:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3518 transitions. [2023-08-26 23:41:46,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494933439300616 [2023-08-26 23:41:46,061 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3518 transitions. [2023-08-26 23:41:46,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3518 transitions. [2023-08-26 23:41:46,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:41:46,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3518 transitions. [2023-08-26 23:41:46,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 251.28571428571428) internal successors, (3518), 14 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:46,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:46,071 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:46,071 INFO L175 Difference]: Start difference. First operand has 350 places, 651 transitions, 11323 flow. Second operand 14 states and 3518 transitions. [2023-08-26 23:41:46,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 751 transitions, 14122 flow [2023-08-26 23:41:46,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 751 transitions, 13897 flow, removed 43 selfloop flow, removed 4 redundant places. [2023-08-26 23:41:46,682 INFO L231 Difference]: Finished difference. Result has 360 places, 658 transitions, 11850 flow [2023-08-26 23:41:46,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=10973, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11850, PETRI_PLACES=360, PETRI_TRANSITIONS=658} [2023-08-26 23:41:46,683 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 319 predicate places. [2023-08-26 23:41:46,683 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 658 transitions, 11850 flow [2023-08-26 23:41:46,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 247.125) internal successors, (3954), 16 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:46,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:41:46,684 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:41:46,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-26 23:41:46,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:46,884 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:41:46,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:41:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash 213215536, now seen corresponding path program 13 times [2023-08-26 23:41:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:41:46,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614352171] [2023-08-26 23:41:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:41:46,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:41:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:41:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:47,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:41:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614352171] [2023-08-26 23:41:47,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614352171] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:41:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944425678] [2023-08-26 23:41:47,356 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 23:41:47,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:47,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:41:47,357 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) [2023-08-26 23:41:47,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-26 23:41:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:41:47,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:41:47,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:41:47,679 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 112 treesize of output 72 [2023-08-26 23:41:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:47,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:41:48,308 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 23:41:48,309 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 109 treesize of output 56 [2023-08-26 23:41:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:48,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944425678] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:41:48,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:41:48,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 23:41:48,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776955377] [2023-08-26 23:41:48,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:41:48,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 23:41:48,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:41:48,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 23:41:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-08-26 23:41:48,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:41:48,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 658 transitions, 11850 flow. Second operand has 18 states, 18 states have (on average 247.22222222222223) internal successors, (4450), 18 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:48,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:41:48,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:41:48,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:41:50,918 INFO L124 PetriNetUnfolderBase]: 2011/4495 cut-off events. [2023-08-26 23:41:50,918 INFO L125 PetriNetUnfolderBase]: For 64575/64575 co-relation queries the response was YES. [2023-08-26 23:41:50,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32469 conditions, 4495 events. 2011/4495 cut-off events. For 64575/64575 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 38118 event pairs, 318 based on Foata normal form. 16/4511 useless extension candidates. Maximal degree in co-relation 32344. Up to 1397 conditions per place. [2023-08-26 23:41:50,964 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 419 selfloop transitions, 320 changer transitions 17/756 dead transitions. [2023-08-26 23:41:50,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 756 transitions, 14366 flow [2023-08-26 23:41:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-26 23:41:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-26 23:41:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6485 transitions. [2023-08-26 23:41:50,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34690274954530864 [2023-08-26 23:41:50,971 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6485 transitions. [2023-08-26 23:41:50,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6485 transitions. [2023-08-26 23:41:50,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:41:50,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6485 transitions. [2023-08-26 23:41:50,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 249.42307692307693) internal successors, (6485), 26 states have internal predecessors, (6485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:50,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 719.0) internal successors, (19413), 27 states have internal predecessors, (19413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:50,988 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 719.0) internal successors, (19413), 27 states have internal predecessors, (19413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:50,988 INFO L175 Difference]: Start difference. First operand has 360 places, 658 transitions, 11850 flow. Second operand 26 states and 6485 transitions. [2023-08-26 23:41:50,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 756 transitions, 14366 flow [2023-08-26 23:41:51,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 756 transitions, 14133 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-08-26 23:41:51,627 INFO L231 Difference]: Finished difference. Result has 379 places, 675 transitions, 12607 flow [2023-08-26 23:41:51,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=11550, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=12607, PETRI_PLACES=379, PETRI_TRANSITIONS=675} [2023-08-26 23:41:51,627 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2023-08-26 23:41:51,628 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 675 transitions, 12607 flow [2023-08-26 23:41:51,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.22222222222223) internal successors, (4450), 18 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:51,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:41:51,628 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:41:51,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-26 23:41:51,829 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,SelfDestructingSolverStorable39 [2023-08-26 23:41:51,829 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:41:51,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:41:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash -197313900, now seen corresponding path program 14 times [2023-08-26 23:41:51,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:41:51,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934239024] [2023-08-26 23:41:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:41:51,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:41:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:41:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:52,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:41:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934239024] [2023-08-26 23:41:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934239024] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:41:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881661136] [2023-08-26 23:41:52,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:41:52,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:52,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:41:52,333 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) [2023-08-26 23:41:52,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-26 23:41:52,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 23:41:52,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:41:52,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 23:41:52,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:41:52,760 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 131 treesize of output 91 [2023-08-26 23:41:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:52,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:41:53,091 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:41:53,092 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 44 treesize of output 28 [2023-08-26 23:41:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:53,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881661136] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:41:53,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:41:53,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 23:41:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17326221] [2023-08-26 23:41:53,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:41:53,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 23:41:53,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:41:53,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 23:41:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-08-26 23:41:53,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:41:53,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 675 transitions, 12607 flow. Second operand has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:53,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:41:53,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:41:53,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:41:55,220 INFO L124 PetriNetUnfolderBase]: 2003/4437 cut-off events. [2023-08-26 23:41:55,220 INFO L125 PetriNetUnfolderBase]: For 65002/65002 co-relation queries the response was YES. [2023-08-26 23:41:55,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33137 conditions, 4437 events. 2003/4437 cut-off events. For 65002/65002 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 37188 event pairs, 518 based on Foata normal form. 16/4453 useless extension candidates. Maximal degree in co-relation 33012. Up to 1514 conditions per place. [2023-08-26 23:41:55,274 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 533 selfloop transitions, 219 changer transitions 0/752 dead transitions. [2023-08-26 23:41:55,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 752 transitions, 14958 flow [2023-08-26 23:41:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 23:41:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 23:41:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4265 transitions. [2023-08-26 23:41:55,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489323406692301 [2023-08-26 23:41:55,277 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4265 transitions. [2023-08-26 23:41:55,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4265 transitions. [2023-08-26 23:41:55,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:41:55,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4265 transitions. [2023-08-26 23:41:55,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 250.88235294117646) internal successors, (4265), 17 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:55,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:55,285 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:55,285 INFO L175 Difference]: Start difference. First operand has 379 places, 675 transitions, 12607 flow. Second operand 17 states and 4265 transitions. [2023-08-26 23:41:55,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 752 transitions, 14958 flow [2023-08-26 23:41:55,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 752 transitions, 14429 flow, removed 83 selfloop flow, removed 17 redundant places. [2023-08-26 23:41:55,936 INFO L231 Difference]: Finished difference. Result has 376 places, 683 transitions, 12788 flow [2023-08-26 23:41:55,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=11995, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12788, PETRI_PLACES=376, PETRI_TRANSITIONS=683} [2023-08-26 23:41:55,937 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2023-08-26 23:41:55,937 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 683 transitions, 12788 flow [2023-08-26 23:41:55,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:55,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:41:55,938 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:41:55,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-26 23:41:56,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:56,138 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:41:56,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:41:56,139 INFO L85 PathProgramCache]: Analyzing trace with hash -77584730, now seen corresponding path program 15 times [2023-08-26 23:41:56,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:41:56,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985167684] [2023-08-26 23:41:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:41:56,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:41:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:41:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:56,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:41:56,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985167684] [2023-08-26 23:41:56,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985167684] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:41:56,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729915806] [2023-08-26 23:41:56,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 23:41:56,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:41:56,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:41:56,661 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) [2023-08-26 23:41:56,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-26 23:41:56,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 23:41:56,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:41:56,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 23:41:56,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:41:57,035 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 131 treesize of output 91 [2023-08-26 23:41:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:57,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:41:57,501 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:41:57,502 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 93 treesize of output 69 [2023-08-26 23:41:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:41:57,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729915806] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:41:57,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:41:57,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 19 [2023-08-26 23:41:57,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838799] [2023-08-26 23:41:57,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:41:57,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 23:41:57,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:41:57,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 23:41:57,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-08-26 23:41:57,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:41:57,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 683 transitions, 12788 flow. Second operand has 19 states, 19 states have (on average 247.05263157894737) internal successors, (4694), 19 states have internal predecessors, (4694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:41:57,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:41:57,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:41:57,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:00,304 INFO L124 PetriNetUnfolderBase]: 2131/4685 cut-off events. [2023-08-26 23:42:00,304 INFO L125 PetriNetUnfolderBase]: For 66666/66666 co-relation queries the response was YES. [2023-08-26 23:42:00,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34517 conditions, 4685 events. 2131/4685 cut-off events. For 66666/66666 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 39405 event pairs, 916 based on Foata normal form. 64/4749 useless extension candidates. Maximal degree in co-relation 34397. Up to 4033 conditions per place. [2023-08-26 23:42:00,353 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 665 selfloop transitions, 145 changer transitions 0/810 dead transitions. [2023-08-26 23:42:00,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 810 transitions, 16081 flow [2023-08-26 23:42:00,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-26 23:42:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-26 23:42:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6505 transitions. [2023-08-26 23:42:00,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3479726115331122 [2023-08-26 23:42:00,358 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6505 transitions. [2023-08-26 23:42:00,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6505 transitions. [2023-08-26 23:42:00,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:00,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6505 transitions. [2023-08-26 23:42:00,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 250.19230769230768) internal successors, (6505), 26 states have internal predecessors, (6505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:00,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 719.0) internal successors, (19413), 27 states have internal predecessors, (19413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:00,370 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 719.0) internal successors, (19413), 27 states have internal predecessors, (19413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:00,370 INFO L175 Difference]: Start difference. First operand has 376 places, 683 transitions, 12788 flow. Second operand 26 states and 6505 transitions. [2023-08-26 23:42:00,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 810 transitions, 16081 flow [2023-08-26 23:42:01,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 810 transitions, 15612 flow, removed 47 selfloop flow, removed 17 redundant places. [2023-08-26 23:42:01,029 INFO L231 Difference]: Finished difference. Result has 392 places, 726 transitions, 13883 flow [2023-08-26 23:42:01,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=12100, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=13883, PETRI_PLACES=392, PETRI_TRANSITIONS=726} [2023-08-26 23:42:01,030 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2023-08-26 23:42:01,030 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 726 transitions, 13883 flow [2023-08-26 23:42:01,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 247.05263157894737) internal successors, (4694), 19 states have internal predecessors, (4694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:01,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:01,031 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:01,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:01,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:01,237 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:01,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash -2021166938, now seen corresponding path program 16 times [2023-08-26 23:42:01,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:01,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163413068] [2023-08-26 23:42:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:01,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:42:01,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:01,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163413068] [2023-08-26 23:42:01,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163413068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:01,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439854909] [2023-08-26 23:42:01,985 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 23:42:01,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:01,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:01,986 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) [2023-08-26 23:42:02,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-26 23:42:02,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 23:42:02,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:02,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 23:42:02,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:02,433 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 72 treesize of output 48 [2023-08-26 23:42:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:02,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:02,648 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:02,649 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 69 [2023-08-26 23:42:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:02,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439854909] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:02,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:02,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 24 [2023-08-26 23:42:02,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418530983] [2023-08-26 23:42:02,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:02,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 23:42:02,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:02,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 23:42:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-08-26 23:42:02,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 719 [2023-08-26 23:42:02,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 726 transitions, 13883 flow. Second operand has 24 states, 24 states have (on average 223.0) internal successors, (5352), 24 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:02,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:02,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 719 [2023-08-26 23:42:02,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:04,580 INFO L124 PetriNetUnfolderBase]: 2111/4617 cut-off events. [2023-08-26 23:42:04,581 INFO L125 PetriNetUnfolderBase]: For 68277/68277 co-relation queries the response was YES. [2023-08-26 23:42:04,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34823 conditions, 4617 events. 2111/4617 cut-off events. For 68277/68277 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 38548 event pairs, 1002 based on Foata normal form. 8/4625 useless extension candidates. Maximal degree in co-relation 34695. Up to 4341 conditions per place. [2023-08-26 23:42:04,629 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 643 selfloop transitions, 80 changer transitions 10/733 dead transitions. [2023-08-26 23:42:04,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 733 transitions, 15292 flow [2023-08-26 23:42:04,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 23:42:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 23:42:04,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2697 transitions. [2023-08-26 23:42:04,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.312586926286509 [2023-08-26 23:42:04,632 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2697 transitions. [2023-08-26 23:42:04,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2697 transitions. [2023-08-26 23:42:04,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:04,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2697 transitions. [2023-08-26 23:42:04,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 224.75) internal successors, (2697), 12 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:04,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 719.0) internal successors, (9347), 13 states have internal predecessors, (9347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:04,638 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 719.0) internal successors, (9347), 13 states have internal predecessors, (9347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:04,638 INFO L175 Difference]: Start difference. First operand has 392 places, 726 transitions, 13883 flow. Second operand 12 states and 2697 transitions. [2023-08-26 23:42:04,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 733 transitions, 15292 flow [2023-08-26 23:42:05,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 733 transitions, 14815 flow, removed 195 selfloop flow, removed 11 redundant places. [2023-08-26 23:42:05,286 INFO L231 Difference]: Finished difference. Result has 392 places, 711 transitions, 13282 flow [2023-08-26 23:42:05,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=13248, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13282, PETRI_PLACES=392, PETRI_TRANSITIONS=711} [2023-08-26 23:42:05,287 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2023-08-26 23:42:05,288 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 711 transitions, 13282 flow [2023-08-26 23:42:05,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 223.0) internal successors, (5352), 24 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:05,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:05,289 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:05,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:05,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:05,493 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:05,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash -869418786, now seen corresponding path program 17 times [2023-08-26 23:42:05,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:05,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577152156] [2023-08-26 23:42:05,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:05,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:05,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577152156] [2023-08-26 23:42:05,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577152156] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:05,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851939255] [2023-08-26 23:42:05,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 23:42:05,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:05,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:05,905 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) [2023-08-26 23:42:05,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-26 23:42:06,085 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 23:42:06,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:06,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-26 23:42:06,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:06,237 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 61 treesize of output 37 [2023-08-26 23:42:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:06,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:06,536 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:06,536 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 117 treesize of output 61 [2023-08-26 23:42:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851939255] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:06,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:06,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-26 23:42:06,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946517810] [2023-08-26 23:42:06,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:06,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 23:42:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:06,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 23:42:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-08-26 23:42:06,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:42:06,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 711 transitions, 13282 flow. Second operand has 19 states, 19 states have (on average 247.26315789473685) internal successors, (4698), 19 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:06,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:06,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:42:06,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:08,680 INFO L124 PetriNetUnfolderBase]: 2095/4573 cut-off events. [2023-08-26 23:42:08,680 INFO L125 PetriNetUnfolderBase]: For 66548/66548 co-relation queries the response was YES. [2023-08-26 23:42:08,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34175 conditions, 4573 events. 2095/4573 cut-off events. For 66548/66548 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 38023 event pairs, 178 based on Foata normal form. 8/4581 useless extension candidates. Maximal degree in co-relation 34052. Up to 1126 conditions per place. [2023-08-26 23:42:08,732 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 389 selfloop transitions, 360 changer transitions 10/759 dead transitions. [2023-08-26 23:42:08,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 759 transitions, 15263 flow [2023-08-26 23:42:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 23:42:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 23:42:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4486 transitions. [2023-08-26 23:42:08,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34662339669293774 [2023-08-26 23:42:08,736 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4486 transitions. [2023-08-26 23:42:08,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4486 transitions. [2023-08-26 23:42:08,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:08,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4486 transitions. [2023-08-26 23:42:08,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 249.22222222222223) internal successors, (4486), 18 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:08,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:08,745 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:08,745 INFO L175 Difference]: Start difference. First operand has 392 places, 711 transitions, 13282 flow. Second operand 18 states and 4486 transitions. [2023-08-26 23:42:08,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 759 transitions, 15263 flow [2023-08-26 23:42:09,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 759 transitions, 15107 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-08-26 23:42:09,465 INFO L231 Difference]: Finished difference. Result has 394 places, 719 transitions, 14053 flow [2023-08-26 23:42:09,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=13080, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=14053, PETRI_PLACES=394, PETRI_TRANSITIONS=719} [2023-08-26 23:42:09,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 353 predicate places. [2023-08-26 23:42:09,466 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 719 transitions, 14053 flow [2023-08-26 23:42:09,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 247.26315789473685) internal successors, (4698), 19 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:09,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:09,467 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:09,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:09,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:09,672 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:09,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:09,673 INFO L85 PathProgramCache]: Analyzing trace with hash -424679998, now seen corresponding path program 18 times [2023-08-26 23:42:09,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:09,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078405101] [2023-08-26 23:42:09,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:09,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:10,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078405101] [2023-08-26 23:42:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078405101] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608750177] [2023-08-26 23:42:10,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 23:42:10,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:10,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:10,084 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) [2023-08-26 23:42:10,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-26 23:42:10,281 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 23:42:10,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:10,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-26 23:42:10,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:10,464 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 84 treesize of output 52 [2023-08-26 23:42:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:10,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:10,844 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:10,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 70 [2023-08-26 23:42:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:10,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608750177] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:10,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:10,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-26 23:42:10,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841619635] [2023-08-26 23:42:10,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:10,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 23:42:10,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:10,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 23:42:10,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-08-26 23:42:10,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:42:10,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 719 transitions, 14053 flow. Second operand has 19 states, 19 states have (on average 247.1578947368421) internal successors, (4696), 19 states have internal predecessors, (4696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:10,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:10,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:42:10,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:12,825 INFO L124 PetriNetUnfolderBase]: 2031/4413 cut-off events. [2023-08-26 23:42:12,825 INFO L125 PetriNetUnfolderBase]: For 70674/70674 co-relation queries the response was YES. [2023-08-26 23:42:12,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34362 conditions, 4413 events. 2031/4413 cut-off events. For 70674/70674 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 36273 event pairs, 328 based on Foata normal form. 16/4429 useless extension candidates. Maximal degree in co-relation 34239. Up to 1510 conditions per place. [2023-08-26 23:42:12,873 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 460 selfloop transitions, 278 changer transitions 0/738 dead transitions. [2023-08-26 23:42:12,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 738 transitions, 15531 flow [2023-08-26 23:42:12,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 23:42:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 23:42:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3005 transitions. [2023-08-26 23:42:12,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34828465461288827 [2023-08-26 23:42:12,875 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3005 transitions. [2023-08-26 23:42:12,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3005 transitions. [2023-08-26 23:42:12,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:12,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3005 transitions. [2023-08-26 23:42:12,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 250.41666666666666) internal successors, (3005), 12 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:12,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 719.0) internal successors, (9347), 13 states have internal predecessors, (9347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:12,881 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 719.0) internal successors, (9347), 13 states have internal predecessors, (9347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:12,881 INFO L175 Difference]: Start difference. First operand has 394 places, 719 transitions, 14053 flow. Second operand 12 states and 3005 transitions. [2023-08-26 23:42:12,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 738 transitions, 15531 flow [2023-08-26 23:42:13,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 738 transitions, 15304 flow, removed 36 selfloop flow, removed 11 redundant places. [2023-08-26 23:42:13,578 INFO L231 Difference]: Finished difference. Result has 386 places, 709 transitions, 14190 flow [2023-08-26 23:42:13,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=13528, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14190, PETRI_PLACES=386, PETRI_TRANSITIONS=709} [2023-08-26 23:42:13,579 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2023-08-26 23:42:13,579 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 709 transitions, 14190 flow [2023-08-26 23:42:13,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 247.1578947368421) internal successors, (4696), 19 states have internal predecessors, (4696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:13,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:13,580 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:13,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:13,785 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,SelfDestructingSolverStorable44 [2023-08-26 23:42:13,786 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:13,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1135991514, now seen corresponding path program 19 times [2023-08-26 23:42:13,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:13,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873618619] [2023-08-26 23:42:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:13,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:14,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:14,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873618619] [2023-08-26 23:42:14,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873618619] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:14,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224266207] [2023-08-26 23:42:14,292 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 23:42:14,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:14,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:14,293 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) [2023-08-26 23:42:14,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-26 23:42:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:14,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 23:42:14,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:14,660 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 133 treesize of output 93 [2023-08-26 23:42:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:14,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:15,201 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:15,201 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 44 treesize of output 28 [2023-08-26 23:42:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:15,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224266207] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:15,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:15,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-26 23:42:15,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712340336] [2023-08-26 23:42:15,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:15,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 23:42:15,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:15,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 23:42:15,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-08-26 23:42:15,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:42:15,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 709 transitions, 14190 flow. Second operand has 17 states, 17 states have (on average 247.05882352941177) internal successors, (4200), 17 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:15,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:15,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:42:15,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:17,484 INFO L124 PetriNetUnfolderBase]: 2083/4537 cut-off events. [2023-08-26 23:42:17,485 INFO L125 PetriNetUnfolderBase]: For 75599/75599 co-relation queries the response was YES. [2023-08-26 23:42:17,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35781 conditions, 4537 events. 2083/4537 cut-off events. For 75599/75599 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 37692 event pairs, 106 based on Foata normal form. 8/4545 useless extension candidates. Maximal degree in co-relation 35659. Up to 2137 conditions per place. [2023-08-26 23:42:17,543 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 517 selfloop transitions, 310 changer transitions 0/827 dead transitions. [2023-08-26 23:42:17,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 827 transitions, 17690 flow [2023-08-26 23:42:17,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 23:42:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 23:42:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4507 transitions. [2023-08-26 23:42:17,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34824602070777316 [2023-08-26 23:42:17,546 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4507 transitions. [2023-08-26 23:42:17,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4507 transitions. [2023-08-26 23:42:17,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:17,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4507 transitions. [2023-08-26 23:42:17,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 250.38888888888889) internal successors, (4507), 18 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:17,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:17,554 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:17,554 INFO L175 Difference]: Start difference. First operand has 386 places, 709 transitions, 14190 flow. Second operand 18 states and 4507 transitions. [2023-08-26 23:42:17,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 827 transitions, 17690 flow [2023-08-26 23:42:18,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 827 transitions, 17311 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-26 23:42:18,342 INFO L231 Difference]: Finished difference. Result has 400 places, 724 transitions, 14926 flow [2023-08-26 23:42:18,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=13858, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=14926, PETRI_PLACES=400, PETRI_TRANSITIONS=724} [2023-08-26 23:42:18,343 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2023-08-26 23:42:18,343 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 724 transitions, 14926 flow [2023-08-26 23:42:18,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 247.05882352941177) internal successors, (4200), 17 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:18,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:18,344 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:18,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:18,549 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,SelfDestructingSolverStorable45 [2023-08-26 23:42:18,550 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:18,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:18,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1809309462, now seen corresponding path program 20 times [2023-08-26 23:42:18,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:18,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453834021] [2023-08-26 23:42:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:18,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:42:19,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453834021] [2023-08-26 23:42:19,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453834021] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785848374] [2023-08-26 23:42:19,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:42:19,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:19,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:19,249 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) [2023-08-26 23:42:19,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-26 23:42:19,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 23:42:19,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:19,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:42:19,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:19,604 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 105 treesize of output 65 [2023-08-26 23:42:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:19,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:19,963 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:19,963 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 44 treesize of output 28 [2023-08-26 23:42:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:19,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785848374] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:19,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:19,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 23 [2023-08-26 23:42:19,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348342940] [2023-08-26 23:42:19,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:19,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 23:42:19,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:19,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 23:42:19,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-08-26 23:42:19,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 719 [2023-08-26 23:42:19,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 724 transitions, 14926 flow. Second operand has 23 states, 23 states have (on average 233.91304347826087) internal successors, (5380), 23 states have internal predecessors, (5380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:19,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:19,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 719 [2023-08-26 23:42:19,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:21,943 INFO L124 PetriNetUnfolderBase]: 2121/4603 cut-off events. [2023-08-26 23:42:21,943 INFO L125 PetriNetUnfolderBase]: For 78631/78631 co-relation queries the response was YES. [2023-08-26 23:42:21,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37085 conditions, 4603 events. 2121/4603 cut-off events. For 78631/78631 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 38260 event pairs, 54 based on Foata normal form. 8/4611 useless extension candidates. Maximal degree in co-relation 36959. Up to 1273 conditions per place. [2023-08-26 23:42:21,991 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 456 selfloop transitions, 374 changer transitions 0/830 dead transitions. [2023-08-26 23:42:21,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 830 transitions, 18392 flow [2023-08-26 23:42:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 23:42:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 23:42:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3549 transitions. [2023-08-26 23:42:21,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32906815020862307 [2023-08-26 23:42:21,994 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3549 transitions. [2023-08-26 23:42:21,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3549 transitions. [2023-08-26 23:42:21,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:21,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3549 transitions. [2023-08-26 23:42:21,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 236.6) internal successors, (3549), 15 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:22,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 719.0) internal successors, (11504), 16 states have internal predecessors, (11504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:22,002 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 719.0) internal successors, (11504), 16 states have internal predecessors, (11504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:22,002 INFO L175 Difference]: Start difference. First operand has 400 places, 724 transitions, 14926 flow. Second operand 15 states and 3549 transitions. [2023-08-26 23:42:22,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 830 transitions, 18392 flow [2023-08-26 23:42:22,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 830 transitions, 18083 flow, removed 57 selfloop flow, removed 11 redundant places. [2023-08-26 23:42:22,671 INFO L231 Difference]: Finished difference. Result has 405 places, 744 transitions, 15904 flow [2023-08-26 23:42:22,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=14649, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=15904, PETRI_PLACES=405, PETRI_TRANSITIONS=744} [2023-08-26 23:42:22,672 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2023-08-26 23:42:22,672 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 744 transitions, 15904 flow [2023-08-26 23:42:22,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 233.91304347826087) internal successors, (5380), 23 states have internal predecessors, (5380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:22,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:22,673 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:22,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:22,873 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,SelfDestructingSolverStorable46 [2023-08-26 23:42:22,874 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:22,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash -273912086, now seen corresponding path program 21 times [2023-08-26 23:42:22,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:22,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928337970] [2023-08-26 23:42:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:22,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:42:23,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:23,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928337970] [2023-08-26 23:42:23,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928337970] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:23,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178787549] [2023-08-26 23:42:23,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 23:42:23,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:23,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:23,582 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) [2023-08-26 23:42:23,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-26 23:42:23,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 23:42:23,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:23,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:42:23,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:24,059 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 82 treesize of output 50 [2023-08-26 23:42:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:24,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:24,407 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:24,408 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 69 [2023-08-26 23:42:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:24,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178787549] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:24,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:24,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 25 [2023-08-26 23:42:24,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243951142] [2023-08-26 23:42:24,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:24,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 23:42:24,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:24,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 23:42:24,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2023-08-26 23:42:24,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 719 [2023-08-26 23:42:24,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 744 transitions, 15904 flow. Second operand has 25 states, 25 states have (on average 233.96) internal successors, (5849), 25 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:24,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:24,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 719 [2023-08-26 23:42:24,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:26,527 INFO L124 PetriNetUnfolderBase]: 2111/4597 cut-off events. [2023-08-26 23:42:26,527 INFO L125 PetriNetUnfolderBase]: For 87411/87411 co-relation queries the response was YES. [2023-08-26 23:42:26,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38428 conditions, 4597 events. 2111/4597 cut-off events. For 87411/87411 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 38270 event pairs, 423 based on Foata normal form. 24/4621 useless extension candidates. Maximal degree in co-relation 38302. Up to 2237 conditions per place. [2023-08-26 23:42:26,588 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 467 selfloop transitions, 312 changer transitions 10/789 dead transitions. [2023-08-26 23:42:26,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 789 transitions, 17972 flow [2023-08-26 23:42:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 23:42:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 23:42:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3788 transitions. [2023-08-26 23:42:26,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3292767732962448 [2023-08-26 23:42:26,591 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3788 transitions. [2023-08-26 23:42:26,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3788 transitions. [2023-08-26 23:42:26,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:26,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3788 transitions. [2023-08-26 23:42:26,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 236.75) internal successors, (3788), 16 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:26,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 719.0) internal successors, (12223), 17 states have internal predecessors, (12223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:26,599 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 719.0) internal successors, (12223), 17 states have internal predecessors, (12223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:26,599 INFO L175 Difference]: Start difference. First operand has 405 places, 744 transitions, 15904 flow. Second operand 16 states and 3788 transitions. [2023-08-26 23:42:26,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 789 transitions, 17972 flow [2023-08-26 23:42:27,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 789 transitions, 17548 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-26 23:42:27,359 INFO L231 Difference]: Finished difference. Result has 417 places, 742 transitions, 16504 flow [2023-08-26 23:42:27,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=15343, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=16504, PETRI_PLACES=417, PETRI_TRANSITIONS=742} [2023-08-26 23:42:27,360 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2023-08-26 23:42:27,360 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 742 transitions, 16504 flow [2023-08-26 23:42:27,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 233.96) internal successors, (5849), 25 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:27,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:27,361 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:27,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:27,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:27,562 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:27,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:27,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1242523750, now seen corresponding path program 22 times [2023-08-26 23:42:27,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:27,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899820499] [2023-08-26 23:42:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:27,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:27,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:27,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:27,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899820499] [2023-08-26 23:42:27,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899820499] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:27,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252890596] [2023-08-26 23:42:27,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 23:42:27,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:27,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:27,967 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) [2023-08-26 23:42:27,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-26 23:42:28,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 23:42:28,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:28,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 23:42:28,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:28,480 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 112 treesize of output 80 [2023-08-26 23:42:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:28,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:28,854 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:28,855 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 117 treesize of output 69 [2023-08-26 23:42:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:28,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252890596] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:28,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:28,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-08-26 23:42:28,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463111095] [2023-08-26 23:42:28,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:28,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 23:42:28,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:28,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 23:42:28,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-08-26 23:42:28,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:42:28,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 742 transitions, 16504 flow. Second operand has 20 states, 20 states have (on average 247.3) internal successors, (4946), 20 states have internal predecessors, (4946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:28,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:28,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:42:28,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:30,934 INFO L124 PetriNetUnfolderBase]: 2139/4649 cut-off events. [2023-08-26 23:42:30,934 INFO L125 PetriNetUnfolderBase]: For 94782/94782 co-relation queries the response was YES. [2023-08-26 23:42:30,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40556 conditions, 4649 events. 2139/4649 cut-off events. For 94782/94782 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 39023 event pairs, 543 based on Foata normal form. 24/4673 useless extension candidates. Maximal degree in co-relation 40426. Up to 2681 conditions per place. [2023-08-26 23:42:30,983 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 551 selfloop transitions, 261 changer transitions 2/814 dead transitions. [2023-08-26 23:42:30,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 814 transitions, 19258 flow [2023-08-26 23:42:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 23:42:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 23:42:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2512 transitions. [2023-08-26 23:42:30,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3493741307371349 [2023-08-26 23:42:30,985 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2512 transitions. [2023-08-26 23:42:30,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2512 transitions. [2023-08-26 23:42:30,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:30,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2512 transitions. [2023-08-26 23:42:30,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.2) internal successors, (2512), 10 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:30,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:30,989 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:30,990 INFO L175 Difference]: Start difference. First operand has 417 places, 742 transitions, 16504 flow. Second operand 10 states and 2512 transitions. [2023-08-26 23:42:30,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 814 transitions, 19258 flow [2023-08-26 23:42:31,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 814 transitions, 18890 flow, removed 32 selfloop flow, removed 8 redundant places. [2023-08-26 23:42:31,691 INFO L231 Difference]: Finished difference. Result has 413 places, 746 transitions, 16813 flow [2023-08-26 23:42:31,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16142, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16813, PETRI_PLACES=413, PETRI_TRANSITIONS=746} [2023-08-26 23:42:31,692 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2023-08-26 23:42:31,692 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 746 transitions, 16813 flow [2023-08-26 23:42:31,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 247.3) internal successors, (4946), 20 states have internal predecessors, (4946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:31,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:31,692 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:31,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:31,893 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,SelfDestructingSolverStorable48 [2023-08-26 23:42:31,893 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:31,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash 13674602, now seen corresponding path program 23 times [2023-08-26 23:42:31,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205523937] [2023-08-26 23:42:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:31,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:32,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:32,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205523937] [2023-08-26 23:42:32,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205523937] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:32,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030482671] [2023-08-26 23:42:32,276 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 23:42:32,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:32,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:32,276 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) [2023-08-26 23:42:32,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-26 23:42:32,492 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 23:42:32,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:32,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 23:42:32,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:32,742 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 84 treesize of output 52 [2023-08-26 23:42:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:32,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:33,113 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:33,113 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 90 treesize of output 66 [2023-08-26 23:42:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030482671] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:33,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:33,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-26 23:42:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621341439] [2023-08-26 23:42:33,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:33,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 23:42:33,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:33,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 23:42:33,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-08-26 23:42:33,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:42:33,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 746 transitions, 16813 flow. Second operand has 19 states, 19 states have (on average 247.21052631578948) internal successors, (4697), 19 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:33,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:33,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:42:33,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:35,221 INFO L124 PetriNetUnfolderBase]: 2135/4625 cut-off events. [2023-08-26 23:42:35,221 INFO L125 PetriNetUnfolderBase]: For 99014/99014 co-relation queries the response was YES. [2023-08-26 23:42:35,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40752 conditions, 4625 events. 2135/4625 cut-off events. For 99014/99014 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 38355 event pairs, 360 based on Foata normal form. 16/4641 useless extension candidates. Maximal degree in co-relation 40621. Up to 1580 conditions per place. [2023-08-26 23:42:35,278 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 478 selfloop transitions, 308 changer transitions 0/786 dead transitions. [2023-08-26 23:42:35,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 786 transitions, 18753 flow [2023-08-26 23:42:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 23:42:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 23:42:35,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3254 transitions. [2023-08-26 23:42:35,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34813309083128274 [2023-08-26 23:42:35,281 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3254 transitions. [2023-08-26 23:42:35,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3254 transitions. [2023-08-26 23:42:35,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:35,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3254 transitions. [2023-08-26 23:42:35,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 250.30769230769232) internal successors, (3254), 13 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:35,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:35,287 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:35,287 INFO L175 Difference]: Start difference. First operand has 413 places, 746 transitions, 16813 flow. Second operand 13 states and 3254 transitions. [2023-08-26 23:42:35,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 786 transitions, 18753 flow [2023-08-26 23:42:36,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 786 transitions, 18384 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-08-26 23:42:36,181 INFO L231 Difference]: Finished difference. Result has 414 places, 744 transitions, 17100 flow [2023-08-26 23:42:36,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16280, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17100, PETRI_PLACES=414, PETRI_TRANSITIONS=744} [2023-08-26 23:42:36,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2023-08-26 23:42:36,182 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 744 transitions, 17100 flow [2023-08-26 23:42:36,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 247.21052631578948) internal successors, (4697), 19 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:36,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:36,182 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:36,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:36,383 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,SelfDestructingSolverStorable49 [2023-08-26 23:42:36,383 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:36,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:36,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1052260274, now seen corresponding path program 24 times [2023-08-26 23:42:36,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:36,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30676463] [2023-08-26 23:42:36,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:36,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:36,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:36,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30676463] [2023-08-26 23:42:36,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30676463] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:36,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335602748] [2023-08-26 23:42:36,805 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 23:42:36,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:36,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:36,806 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) [2023-08-26 23:42:36,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-26 23:42:37,018 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 23:42:37,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:37,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:42:37,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:37,181 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 112 treesize of output 72 [2023-08-26 23:42:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:37,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:37,509 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 23:42:37,509 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 79 treesize of output 42 [2023-08-26 23:42:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:37,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335602748] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:37,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:37,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 23:42:37,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56889158] [2023-08-26 23:42:37,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:37,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 23:42:37,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:37,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 23:42:37,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-08-26 23:42:37,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:42:37,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 744 transitions, 17100 flow. Second operand has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:37,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:37,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:42:37,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:39,396 INFO L124 PetriNetUnfolderBase]: 2123/4581 cut-off events. [2023-08-26 23:42:39,397 INFO L125 PetriNetUnfolderBase]: For 99448/99448 co-relation queries the response was YES. [2023-08-26 23:42:39,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40808 conditions, 4581 events. 2123/4581 cut-off events. For 99448/99448 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 37826 event pairs, 235 based on Foata normal form. 4/4585 useless extension candidates. Maximal degree in co-relation 40677. Up to 1555 conditions per place. [2023-08-26 23:42:39,461 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 464 selfloop transitions, 347 changer transitions 5/816 dead transitions. [2023-08-26 23:42:39,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 816 transitions, 19717 flow [2023-08-26 23:42:39,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 23:42:39,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 23:42:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3257 transitions. [2023-08-26 23:42:39,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484540494276238 [2023-08-26 23:42:39,463 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3257 transitions. [2023-08-26 23:42:39,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3257 transitions. [2023-08-26 23:42:39,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:39,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3257 transitions. [2023-08-26 23:42:39,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 250.53846153846155) internal successors, (3257), 13 states have internal predecessors, (3257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:39,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:39,470 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:39,470 INFO L175 Difference]: Start difference. First operand has 414 places, 744 transitions, 17100 flow. Second operand 13 states and 3257 transitions. [2023-08-26 23:42:39,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 816 transitions, 19717 flow [2023-08-26 23:42:40,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 816 transitions, 19263 flow, removed 32 selfloop flow, removed 10 redundant places. [2023-08-26 23:42:40,323 INFO L231 Difference]: Finished difference. Result has 416 places, 740 transitions, 17276 flow [2023-08-26 23:42:40,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16623, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17276, PETRI_PLACES=416, PETRI_TRANSITIONS=740} [2023-08-26 23:42:40,324 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2023-08-26 23:42:40,324 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 740 transitions, 17276 flow [2023-08-26 23:42:40,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:40,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:40,325 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:40,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:40,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:40,526 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:40,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:40,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1087876, now seen corresponding path program 25 times [2023-08-26 23:42:40,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:40,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651972537] [2023-08-26 23:42:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:40,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:41,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:41,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651972537] [2023-08-26 23:42:41,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651972537] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:41,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686457525] [2023-08-26 23:42:41,002 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 23:42:41,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:41,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:41,004 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) [2023-08-26 23:42:41,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-26 23:42:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:41,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:42:41,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:41,407 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 112 treesize of output 72 [2023-08-26 23:42:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:41,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:41,826 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:41,826 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 44 treesize of output 28 [2023-08-26 23:42:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:41,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686457525] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:41,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:41,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 23:42:41,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524440854] [2023-08-26 23:42:41,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:41,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 23:42:41,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:41,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 23:42:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-08-26 23:42:41,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:42:41,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 740 transitions, 17276 flow. Second operand has 18 states, 18 states have (on average 246.94444444444446) internal successors, (4445), 18 states have internal predecessors, (4445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:41,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:41,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:42:41,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:44,056 INFO L124 PetriNetUnfolderBase]: 2081/4495 cut-off events. [2023-08-26 23:42:44,057 INFO L125 PetriNetUnfolderBase]: For 99317/99317 co-relation queries the response was YES. [2023-08-26 23:42:44,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40866 conditions, 4495 events. 2081/4495 cut-off events. For 99317/99317 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 36992 event pairs, 60 based on Foata normal form. 16/4511 useless extension candidates. Maximal degree in co-relation 40735. Up to 1189 conditions per place. [2023-08-26 23:42:44,109 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 424 selfloop transitions, 399 changer transitions 7/830 dead transitions. [2023-08-26 23:42:44,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 830 transitions, 20259 flow [2023-08-26 23:42:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 23:42:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 23:42:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4499 transitions. [2023-08-26 23:42:44,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34762787822593105 [2023-08-26 23:42:44,113 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4499 transitions. [2023-08-26 23:42:44,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4499 transitions. [2023-08-26 23:42:44,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:44,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4499 transitions. [2023-08-26 23:42:44,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 249.94444444444446) internal successors, (4499), 18 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:44,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:44,121 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 719.0) internal successors, (13661), 19 states have internal predecessors, (13661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:44,121 INFO L175 Difference]: Start difference. First operand has 416 places, 740 transitions, 17276 flow. Second operand 18 states and 4499 transitions. [2023-08-26 23:42:44,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 830 transitions, 20259 flow [2023-08-26 23:42:44,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 830 transitions, 19518 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-08-26 23:42:44,841 INFO L231 Difference]: Finished difference. Result has 417 places, 734 transitions, 17231 flow [2023-08-26 23:42:44,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16423, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=17231, PETRI_PLACES=417, PETRI_TRANSITIONS=734} [2023-08-26 23:42:44,842 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2023-08-26 23:42:44,842 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 734 transitions, 17231 flow [2023-08-26 23:42:44,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 246.94444444444446) internal successors, (4445), 18 states have internal predecessors, (4445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:44,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:44,843 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:44,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:45,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:45,043 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:45,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:45,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1252811518, now seen corresponding path program 26 times [2023-08-26 23:42:45,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:45,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623262454] [2023-08-26 23:42:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:45,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:45,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:45,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623262454] [2023-08-26 23:42:45,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623262454] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:45,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170502713] [2023-08-26 23:42:45,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:42:45,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:45,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:45,418 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) [2023-08-26 23:42:45,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-26 23:42:45,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 23:42:45,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:45,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:42:45,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:45,830 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 105 treesize of output 65 [2023-08-26 23:42:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:45,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:46,078 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:46,078 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 70 treesize of output 46 [2023-08-26 23:42:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:46,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170502713] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:46,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:46,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-26 23:42:46,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423853529] [2023-08-26 23:42:46,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:46,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 23:42:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:46,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 23:42:46,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-26 23:42:46,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:42:46,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 734 transitions, 17231 flow. Second operand has 17 states, 17 states have (on average 247.05882352941177) internal successors, (4200), 17 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:46,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:46,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:42:46,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:47,877 INFO L124 PetriNetUnfolderBase]: 2075/4453 cut-off events. [2023-08-26 23:42:47,877 INFO L125 PetriNetUnfolderBase]: For 101764/101764 co-relation queries the response was YES. [2023-08-26 23:42:47,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40973 conditions, 4453 events. 2075/4453 cut-off events. For 101764/101764 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 36303 event pairs, 441 based on Foata normal form. 32/4485 useless extension candidates. Maximal degree in co-relation 40845. Up to 2313 conditions per place. [2023-08-26 23:42:47,929 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 470 selfloop transitions, 291 changer transitions 0/761 dead transitions. [2023-08-26 23:42:47,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 761 transitions, 18958 flow [2023-08-26 23:42:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 23:42:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 23:42:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2506 transitions. [2023-08-26 23:42:47,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34853963838664814 [2023-08-26 23:42:47,932 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2506 transitions. [2023-08-26 23:42:47,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2506 transitions. [2023-08-26 23:42:47,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:47,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2506 transitions. [2023-08-26 23:42:47,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 250.6) internal successors, (2506), 10 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:47,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:47,936 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:47,936 INFO L175 Difference]: Start difference. First operand has 417 places, 734 transitions, 17231 flow. Second operand 10 states and 2506 transitions. [2023-08-26 23:42:47,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 761 transitions, 18958 flow [2023-08-26 23:42:48,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 761 transitions, 18395 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-08-26 23:42:48,632 INFO L231 Difference]: Finished difference. Result has 413 places, 730 transitions, 17226 flow [2023-08-26 23:42:48,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16431, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17226, PETRI_PLACES=413, PETRI_TRANSITIONS=730} [2023-08-26 23:42:48,633 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2023-08-26 23:42:48,633 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 730 transitions, 17226 flow [2023-08-26 23:42:48,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 247.05882352941177) internal successors, (4200), 17 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:48,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:48,633 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:48,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:48,834 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,SelfDestructingSolverStorable52 [2023-08-26 23:42:48,834 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:48,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash 574787062, now seen corresponding path program 27 times [2023-08-26 23:42:48,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:48,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505417205] [2023-08-26 23:42:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:48,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:49,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:49,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505417205] [2023-08-26 23:42:49,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505417205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:49,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505563455] [2023-08-26 23:42:49,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 23:42:49,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:49,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:49,166 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) [2023-08-26 23:42:49,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-26 23:42:49,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 23:42:49,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:49,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-26 23:42:49,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:49,560 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 112 treesize of output 80 [2023-08-26 23:42:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:49,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:49,869 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:49,870 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 69 [2023-08-26 23:42:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:49,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505563455] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:49,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:49,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-26 23:42:49,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958462245] [2023-08-26 23:42:49,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:49,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 23:42:49,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:49,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 23:42:49,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-08-26 23:42:49,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:42:49,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 730 transitions, 17226 flow. Second operand has 17 states, 17 states have (on average 247.23529411764707) internal successors, (4203), 17 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:49,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:49,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:42:49,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:51,674 INFO L124 PetriNetUnfolderBase]: 2081/4459 cut-off events. [2023-08-26 23:42:51,675 INFO L125 PetriNetUnfolderBase]: For 104541/104541 co-relation queries the response was YES. [2023-08-26 23:42:51,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41064 conditions, 4459 events. 2081/4459 cut-off events. For 104541/104541 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 36272 event pairs, 842 based on Foata normal form. 24/4483 useless extension candidates. Maximal degree in co-relation 40935. Up to 3967 conditions per place. [2023-08-26 23:42:51,735 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 628 selfloop transitions, 137 changer transitions 0/765 dead transitions. [2023-08-26 23:42:51,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 765 transitions, 19219 flow [2023-08-26 23:42:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 23:42:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 23:42:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2504 transitions. [2023-08-26 23:42:51,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482614742698192 [2023-08-26 23:42:51,738 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2504 transitions. [2023-08-26 23:42:51,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2504 transitions. [2023-08-26 23:42:51,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:51,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2504 transitions. [2023-08-26 23:42:51,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 250.4) internal successors, (2504), 10 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:51,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:51,742 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:51,742 INFO L175 Difference]: Start difference. First operand has 413 places, 730 transitions, 17226 flow. Second operand 10 states and 2504 transitions. [2023-08-26 23:42:51,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 765 transitions, 19219 flow [2023-08-26 23:42:52,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 765 transitions, 18850 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-08-26 23:42:52,559 INFO L231 Difference]: Finished difference. Result has 417 places, 734 transitions, 17302 flow [2023-08-26 23:42:52,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16857, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17302, PETRI_PLACES=417, PETRI_TRANSITIONS=734} [2023-08-26 23:42:52,560 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2023-08-26 23:42:52,560 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 734 transitions, 17302 flow [2023-08-26 23:42:52,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 247.23529411764707) internal successors, (4203), 17 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:52,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:52,561 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:52,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:52,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:52,761 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:52,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1563131268, now seen corresponding path program 28 times [2023-08-26 23:42:52,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:52,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093961133] [2023-08-26 23:42:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:42:53,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:53,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093961133] [2023-08-26 23:42:53,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093961133] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:53,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224862064] [2023-08-26 23:42:53,383 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 23:42:53,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:53,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:53,384 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) [2023-08-26 23:42:53,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-26 23:42:53,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 23:42:53,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:53,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:42:53,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:53,769 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 84 treesize of output 52 [2023-08-26 23:42:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:53,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:54,171 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:54,171 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 44 treesize of output 28 [2023-08-26 23:42:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:54,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224862064] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:54,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:54,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 22 [2023-08-26 23:42:54,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075627868] [2023-08-26 23:42:54,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:54,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 23:42:54,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 23:42:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-08-26 23:42:54,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 719 [2023-08-26 23:42:54,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 734 transitions, 17302 flow. Second operand has 22 states, 22 states have (on average 233.95454545454547) internal successors, (5147), 22 states have internal predecessors, (5147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:54,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:54,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 719 [2023-08-26 23:42:54,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:42:56,369 INFO L124 PetriNetUnfolderBase]: 2107/4493 cut-off events. [2023-08-26 23:42:56,369 INFO L125 PetriNetUnfolderBase]: For 103074/103074 co-relation queries the response was YES. [2023-08-26 23:42:56,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41400 conditions, 4493 events. 2107/4493 cut-off events. For 103074/103074 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 36526 event pairs, 58 based on Foata normal form. 8/4501 useless extension candidates. Maximal degree in co-relation 41269. Up to 1267 conditions per place. [2023-08-26 23:42:56,418 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 437 selfloop transitions, 393 changer transitions 4/834 dead transitions. [2023-08-26 23:42:56,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 834 transitions, 20745 flow [2023-08-26 23:42:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 23:42:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 23:42:56,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4019 transitions. [2023-08-26 23:42:56,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32880634868690173 [2023-08-26 23:42:56,421 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4019 transitions. [2023-08-26 23:42:56,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4019 transitions. [2023-08-26 23:42:56,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:42:56,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4019 transitions. [2023-08-26 23:42:56,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 236.41176470588235) internal successors, (4019), 17 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:56,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:56,429 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:56,429 INFO L175 Difference]: Start difference. First operand has 417 places, 734 transitions, 17302 flow. Second operand 17 states and 4019 transitions. [2023-08-26 23:42:56,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 834 transitions, 20745 flow [2023-08-26 23:42:57,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 834 transitions, 20197 flow, removed 32 selfloop flow, removed 9 redundant places. [2023-08-26 23:42:57,170 INFO L231 Difference]: Finished difference. Result has 424 places, 750 transitions, 18067 flow [2023-08-26 23:42:57,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16603, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18067, PETRI_PLACES=424, PETRI_TRANSITIONS=750} [2023-08-26 23:42:57,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2023-08-26 23:42:57,171 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 750 transitions, 18067 flow [2023-08-26 23:42:57,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 233.95454545454547) internal successors, (5147), 22 states have internal predecessors, (5147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:57,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:42:57,171 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:42:57,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-26 23:42:57,372 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,SelfDestructingSolverStorable54 [2023-08-26 23:42:57,372 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:42:57,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:42:57,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1813923978, now seen corresponding path program 29 times [2023-08-26 23:42:57,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:42:57,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637867420] [2023-08-26 23:42:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:42:57,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:42:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:42:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:57,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:42:57,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637867420] [2023-08-26 23:42:57,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637867420] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:42:57,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226177495] [2023-08-26 23:42:57,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 23:42:57,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:42:57,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:42:57,712 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) [2023-08-26 23:42:57,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-26 23:42:57,935 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 23:42:57,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:42:57,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 23:42:57,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:42:58,080 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 91 treesize of output 59 [2023-08-26 23:42:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:58,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:42:58,448 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:42:58,449 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 117 treesize of output 61 [2023-08-26 23:42:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:42:58,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226177495] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:42:58,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:42:58,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-26 23:42:58,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418421363] [2023-08-26 23:42:58,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:42:58,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 23:42:58,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:42:58,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 23:42:58,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-08-26 23:42:58,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:42:58,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 750 transitions, 18067 flow. Second operand has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:42:58,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:42:58,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:42:58,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:43:00,229 INFO L124 PetriNetUnfolderBase]: 2061/4375 cut-off events. [2023-08-26 23:43:00,229 INFO L125 PetriNetUnfolderBase]: For 108048/108048 co-relation queries the response was YES. [2023-08-26 23:43:00,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40957 conditions, 4375 events. 2061/4375 cut-off events. For 108048/108048 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 35216 event pairs, 472 based on Foata normal form. 20/4395 useless extension candidates. Maximal degree in co-relation 40824. Up to 2874 conditions per place. [2023-08-26 23:43:00,285 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 469 selfloop transitions, 284 changer transitions 0/753 dead transitions. [2023-08-26 23:43:00,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 753 transitions, 19277 flow [2023-08-26 23:43:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 23:43:00,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 23:43:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2502 transitions. [2023-08-26 23:43:00,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3479833101529903 [2023-08-26 23:43:00,287 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2502 transitions. [2023-08-26 23:43:00,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2502 transitions. [2023-08-26 23:43:00,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:43:00,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2502 transitions. [2023-08-26 23:43:00,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 250.2) internal successors, (2502), 10 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:00,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:00,292 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:00,292 INFO L175 Difference]: Start difference. First operand has 424 places, 750 transitions, 18067 flow. Second operand 10 states and 2502 transitions. [2023-08-26 23:43:00,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 753 transitions, 19277 flow [2023-08-26 23:43:01,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 753 transitions, 18501 flow, removed 18 selfloop flow, removed 16 redundant places. [2023-08-26 23:43:01,029 INFO L231 Difference]: Finished difference. Result has 414 places, 732 transitions, 17450 flow [2023-08-26 23:43:01,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=16795, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17450, PETRI_PLACES=414, PETRI_TRANSITIONS=732} [2023-08-26 23:43:01,030 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2023-08-26 23:43:01,030 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 732 transitions, 17450 flow [2023-08-26 23:43:01,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.05555555555554) internal successors, (4447), 18 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:01,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:43:01,031 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:43:01,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-26 23:43:01,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:43:01,238 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:43:01,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:43:01,238 INFO L85 PathProgramCache]: Analyzing trace with hash 110698622, now seen corresponding path program 30 times [2023-08-26 23:43:01,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:43:01,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713063089] [2023-08-26 23:43:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:43:01,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:43:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:43:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:01,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:43:01,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713063089] [2023-08-26 23:43:01,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713063089] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:43:01,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788004484] [2023-08-26 23:43:01,688 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 23:43:01,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:43:01,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:43:01,689 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) [2023-08-26 23:43:01,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-26 23:43:01,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 23:43:01,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:43:01,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-26 23:43:01,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:43:02,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:43:02,087 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-08-26 23:43:02,142 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 84 treesize of output 52 [2023-08-26 23:43:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:02,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:43:02,432 WARN L839 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1706 (Array Int Int))) (not (= c_~name_1~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1706) c_~nondet_0~0.base) c_~nondet_0~0.offset)))) (forall ((v_ArrVal_1706 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1706) c_~nondet_0~0.base) c_~nondet_0~0.offset) c_~name_2~0)))) (= c_~name_1~0 c_~name_2~0) (not (= 0 c_~break_6~0))) is different from false [2023-08-26 23:43:02,444 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:43:02,445 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 70 treesize of output 54 [2023-08-26 23:43:02,448 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 39 treesize of output 37 [2023-08-26 23:43:02,466 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 37 treesize of output 35 [2023-08-26 23:43:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 1 not checked. [2023-08-26 23:43:02,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788004484] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:43:02,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:43:02,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-26 23:43:02,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53931156] [2023-08-26 23:43:02,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:43:02,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 23:43:02,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:43:02,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 23:43:02,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=381, Unknown=7, NotChecked=40, Total=506 [2023-08-26 23:43:02,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 719 [2023-08-26 23:43:02,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 732 transitions, 17450 flow. Second operand has 23 states, 23 states have (on average 242.69565217391303) internal successors, (5582), 23 states have internal predecessors, (5582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:02,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:43:02,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 719 [2023-08-26 23:43:02,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:43:04,525 INFO L124 PetriNetUnfolderBase]: 2097/4415 cut-off events. [2023-08-26 23:43:04,525 INFO L125 PetriNetUnfolderBase]: For 106917/106917 co-relation queries the response was YES. [2023-08-26 23:43:04,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41381 conditions, 4415 events. 2097/4415 cut-off events. For 106917/106917 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 35360 event pairs, 135 based on Foata normal form. 64/4479 useless extension candidates. Maximal degree in co-relation 41251. Up to 1532 conditions per place. [2023-08-26 23:43:04,580 INFO L140 encePairwiseOnDemand]: 713/719 looper letters, 411 selfloop transitions, 406 changer transitions 3/820 dead transitions. [2023-08-26 23:43:04,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 820 transitions, 20615 flow [2023-08-26 23:43:04,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 23:43:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 23:43:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3208 transitions. [2023-08-26 23:43:04,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34321172568738634 [2023-08-26 23:43:04,583 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3208 transitions. [2023-08-26 23:43:04,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3208 transitions. [2023-08-26 23:43:04,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:43:04,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3208 transitions. [2023-08-26 23:43:04,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 246.76923076923077) internal successors, (3208), 13 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:04,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:04,589 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 719.0) internal successors, (10066), 14 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:04,589 INFO L175 Difference]: Start difference. First operand has 414 places, 732 transitions, 17450 flow. Second operand 13 states and 3208 transitions. [2023-08-26 23:43:04,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 820 transitions, 20615 flow [2023-08-26 23:43:05,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 820 transitions, 20245 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-08-26 23:43:05,382 INFO L231 Difference]: Finished difference. Result has 419 places, 753 transitions, 18643 flow [2023-08-26 23:43:05,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=17108, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18643, PETRI_PLACES=419, PETRI_TRANSITIONS=753} [2023-08-26 23:43:05,383 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2023-08-26 23:43:05,383 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 753 transitions, 18643 flow [2023-08-26 23:43:05,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 242.69565217391303) internal successors, (5582), 23 states have internal predecessors, (5582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:05,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:43:05,383 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:43:05,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-26 23:43:05,584 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,SelfDestructingSolverStorable56 [2023-08-26 23:43:05,584 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:43:05,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:43:05,585 INFO L85 PathProgramCache]: Analyzing trace with hash 566977574, now seen corresponding path program 31 times [2023-08-26 23:43:05,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:43:05,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906116513] [2023-08-26 23:43:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:43:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:43:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:43:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:43:06,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:43:06,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906116513] [2023-08-26 23:43:06,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906116513] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:43:06,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580208598] [2023-08-26 23:43:06,265 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 23:43:06,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:43:06,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:43:06,268 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) [2023-08-26 23:43:06,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-26 23:43:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:43:06,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:43:06,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:43:06,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:43:06,688 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 25 treesize of output 25 [2023-08-26 23:43:06,769 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 72 treesize of output 48 [2023-08-26 23:43:06,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:06,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:43:07,178 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:43:07,178 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 145 treesize of output 97 [2023-08-26 23:43:07,182 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 19 treesize of output 15 [2023-08-26 23:43:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:07,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580208598] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:43:07,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:43:07,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2023-08-26 23:43:07,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199723972] [2023-08-26 23:43:07,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:43:07,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-26 23:43:07,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:43:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-26 23:43:07,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=756, Unknown=2, NotChecked=0, Total=870 [2023-08-26 23:43:07,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-26 23:43:07,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 753 transitions, 18643 flow. Second operand has 30 states, 30 states have (on average 218.76666666666668) internal successors, (6563), 30 states have internal predecessors, (6563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:07,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:43:07,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-26 23:43:07,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:43:09,336 INFO L124 PetriNetUnfolderBase]: 2064/4353 cut-off events. [2023-08-26 23:43:09,336 INFO L125 PetriNetUnfolderBase]: For 110176/110176 co-relation queries the response was YES. [2023-08-26 23:43:09,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41836 conditions, 4353 events. 2064/4353 cut-off events. For 110176/110176 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 34796 event pairs, 732 based on Foata normal form. 16/4369 useless extension candidates. Maximal degree in co-relation 41705. Up to 3221 conditions per place. [2023-08-26 23:43:09,391 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 554 selfloop transitions, 201 changer transitions 18/773 dead transitions. [2023-08-26 23:43:09,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 773 transitions, 20303 flow [2023-08-26 23:43:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 23:43:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 23:43:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2440 transitions. [2023-08-26 23:43:09,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30850929321026677 [2023-08-26 23:43:09,394 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2440 transitions. [2023-08-26 23:43:09,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2440 transitions. [2023-08-26 23:43:09,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:43:09,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2440 transitions. [2023-08-26 23:43:09,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 221.8181818181818) internal successors, (2440), 11 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:09,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 719.0) internal successors, (8628), 12 states have internal predecessors, (8628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:09,401 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 719.0) internal successors, (8628), 12 states have internal predecessors, (8628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:09,401 INFO L175 Difference]: Start difference. First operand has 419 places, 753 transitions, 18643 flow. Second operand 11 states and 2440 transitions. [2023-08-26 23:43:09,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 773 transitions, 20303 flow [2023-08-26 23:43:10,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 773 transitions, 19985 flow, removed 58 selfloop flow, removed 8 redundant places. [2023-08-26 23:43:10,168 INFO L231 Difference]: Finished difference. Result has 421 places, 738 transitions, 18330 flow [2023-08-26 23:43:10,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=18253, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18330, PETRI_PLACES=421, PETRI_TRANSITIONS=738} [2023-08-26 23:43:10,169 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2023-08-26 23:43:10,169 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 738 transitions, 18330 flow [2023-08-26 23:43:10,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 218.76666666666668) internal successors, (6563), 30 states have internal predecessors, (6563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:10,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:43:10,170 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:43:10,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-26 23:43:10,370 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,SelfDestructingSolverStorable57 [2023-08-26 23:43:10,370 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:43:10,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:43:10,370 INFO L85 PathProgramCache]: Analyzing trace with hash -883222964, now seen corresponding path program 32 times [2023-08-26 23:43:10,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:43:10,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685185608] [2023-08-26 23:43:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:43:10,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:43:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:43:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:43:11,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:43:11,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685185608] [2023-08-26 23:43:11,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685185608] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:43:11,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881410358] [2023-08-26 23:43:11,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:43:11,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:43:11,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:43:11,034 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) [2023-08-26 23:43:11,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-26 23:43:11,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 23:43:11,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:43:11,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-26 23:43:11,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:43:11,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:43:11,448 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 63 treesize of output 59 [2023-08-26 23:43:11,652 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 [2023-08-26 23:43:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:11,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:43:12,064 WARN L839 $PredicateComparison]: unable to prove that (or (= c_~name_1~0 c_~name_2~0) (and (forall ((v_ArrVal_1784 (Array Int Int))) (not (= c_~name_1~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1784) c_~nondet_0~0.base) c_~nondet_0~0.offset)))) (forall ((v_ArrVal_1784 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1784) c_~nondet_0~0.base) c_~nondet_0~0.offset) c_~name_2~0)))) (not (= 0 c_~break_6~0))) is different from false [2023-08-26 23:43:12,077 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:43:12,077 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 70 treesize of output 54 [2023-08-26 23:43:12,080 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 39 treesize of output 37 [2023-08-26 23:43:12,082 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 37 treesize of output 35 [2023-08-26 23:43:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:12,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881410358] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:43:12,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:43:12,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-08-26 23:43:12,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784208563] [2023-08-26 23:43:12,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:43:12,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-26 23:43:12,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:43:12,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-26 23:43:12,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=644, Unknown=1, NotChecked=52, Total=812 [2023-08-26 23:43:12,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 719 [2023-08-26 23:43:12,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 738 transitions, 18330 flow. Second operand has 29 states, 29 states have (on average 233.79310344827587) internal successors, (6780), 29 states have internal predecessors, (6780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:12,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:43:12,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 719 [2023-08-26 23:43:12,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:43:14,552 INFO L124 PetriNetUnfolderBase]: 2122/4412 cut-off events. [2023-08-26 23:43:14,552 INFO L125 PetriNetUnfolderBase]: For 116580/116580 co-relation queries the response was YES. [2023-08-26 23:43:14,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42734 conditions, 4412 events. 2122/4412 cut-off events. For 116580/116580 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 34918 event pairs, 189 based on Foata normal form. 32/4444 useless extension candidates. Maximal degree in co-relation 42605. Up to 1706 conditions per place. [2023-08-26 23:43:14,611 INFO L140 encePairwiseOnDemand]: 707/719 looper letters, 407 selfloop transitions, 463 changer transitions 2/872 dead transitions. [2023-08-26 23:43:14,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 872 transitions, 22703 flow [2023-08-26 23:43:14,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 23:43:14,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 23:43:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4033 transitions. [2023-08-26 23:43:14,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32995173034443265 [2023-08-26 23:43:14,614 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4033 transitions. [2023-08-26 23:43:14,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4033 transitions. [2023-08-26 23:43:14,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:43:14,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4033 transitions. [2023-08-26 23:43:14,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 237.23529411764707) internal successors, (4033), 17 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:14,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:14,621 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 719.0) internal successors, (12942), 18 states have internal predecessors, (12942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:14,622 INFO L175 Difference]: Start difference. First operand has 421 places, 738 transitions, 18330 flow. Second operand 17 states and 4033 transitions. [2023-08-26 23:43:14,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 872 transitions, 22703 flow [2023-08-26 23:43:15,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 872 transitions, 22453 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-26 23:43:15,470 INFO L231 Difference]: Finished difference. Result has 428 places, 808 transitions, 21054 flow [2023-08-26 23:43:15,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=17967, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=387, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=21054, PETRI_PLACES=428, PETRI_TRANSITIONS=808} [2023-08-26 23:43:15,471 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2023-08-26 23:43:15,471 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 808 transitions, 21054 flow [2023-08-26 23:43:15,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 233.79310344827587) internal successors, (6780), 29 states have internal predecessors, (6780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:15,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:43:15,472 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:43:15,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-26 23:43:15,672 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,SelfDestructingSolverStorable58 [2023-08-26 23:43:15,672 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:43:15,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:43:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1916989782, now seen corresponding path program 33 times [2023-08-26 23:43:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:43:15,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868078400] [2023-08-26 23:43:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:43:15,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:43:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:43:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:16,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:43:16,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868078400] [2023-08-26 23:43:16,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868078400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:43:16,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772259597] [2023-08-26 23:43:16,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 23:43:16,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:43:16,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:43:16,175 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) [2023-08-26 23:43:16,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-26 23:43:16,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 23:43:16,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:43:16,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-26 23:43:16,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:43:16,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:43:16,569 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 65 treesize of output 61 [2023-08-26 23:43:16,818 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 82 treesize of output 50 [2023-08-26 23:43:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:16,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:43:17,382 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:43:17,382 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 115 treesize of output 83 [2023-08-26 23:43:17,385 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 19 treesize of output 15 [2023-08-26 23:43:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:17,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772259597] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:43:17,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:43:17,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-26 23:43:17,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446523614] [2023-08-26 23:43:17,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:43:17,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 23:43:17,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:43:17,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 23:43:17,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=538, Unknown=2, NotChecked=0, Total=650 [2023-08-26 23:43:17,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 719 [2023-08-26 23:43:17,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 808 transitions, 21054 flow. Second operand has 26 states, 26 states have (on average 242.84615384615384) internal successors, (6314), 26 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:17,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:43:17,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 719 [2023-08-26 23:43:17,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:43:19,622 INFO L124 PetriNetUnfolderBase]: 2078/4334 cut-off events. [2023-08-26 23:43:19,622 INFO L125 PetriNetUnfolderBase]: For 126363/126363 co-relation queries the response was YES. [2023-08-26 23:43:19,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44153 conditions, 4334 events. 2078/4334 cut-off events. For 126363/126363 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 34273 event pairs, 470 based on Foata normal form. 20/4354 useless extension candidates. Maximal degree in co-relation 44023. Up to 2248 conditions per place. [2023-08-26 23:43:19,674 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 522 selfloop transitions, 321 changer transitions 8/851 dead transitions. [2023-08-26 23:43:19,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 851 transitions, 23167 flow [2023-08-26 23:43:19,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 23:43:19,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 23:43:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3451 transitions. [2023-08-26 23:43:19,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3428372739916551 [2023-08-26 23:43:19,677 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3451 transitions. [2023-08-26 23:43:19,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3451 transitions. [2023-08-26 23:43:19,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:43:19,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3451 transitions. [2023-08-26 23:43:19,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 246.5) internal successors, (3451), 14 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:19,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:19,683 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:19,683 INFO L175 Difference]: Start difference. First operand has 428 places, 808 transitions, 21054 flow. Second operand 14 states and 3451 transitions. [2023-08-26 23:43:19,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 851 transitions, 23167 flow [2023-08-26 23:43:20,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 851 transitions, 22430 flow, removed 64 selfloop flow, removed 12 redundant places. [2023-08-26 23:43:20,492 INFO L231 Difference]: Finished difference. Result has 431 places, 804 transitions, 21001 flow [2023-08-26 23:43:20,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=20281, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=21001, PETRI_PLACES=431, PETRI_TRANSITIONS=804} [2023-08-26 23:43:20,493 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2023-08-26 23:43:20,493 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 804 transitions, 21001 flow [2023-08-26 23:43:20,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 242.84615384615384) internal successors, (6314), 26 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:20,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:43:20,494 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:43:20,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-26 23:43:20,695 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,SelfDestructingSolverStorable59 [2023-08-26 23:43:20,695 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:43:20,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:43:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash -719246700, now seen corresponding path program 34 times [2023-08-26 23:43:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:43:20,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511555319] [2023-08-26 23:43:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:43:20,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:43:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:43:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:21,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:43:21,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511555319] [2023-08-26 23:43:21,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511555319] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:43:21,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030205577] [2023-08-26 23:43:21,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 23:43:21,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:43:21,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:43:21,142 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) [2023-08-26 23:43:21,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-26 23:43:21,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 23:43:21,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:43:21,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 23:43:21,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:43:21,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:43:21,526 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 65 treesize of output 61 [2023-08-26 23:43:21,687 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 112 treesize of output 80 [2023-08-26 23:43:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:21,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:43:22,077 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:43:22,077 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 74 treesize of output 58 [2023-08-26 23:43:22,080 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 43 treesize of output 41 [2023-08-26 23:43:22,083 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 41 treesize of output 39 [2023-08-26 23:43:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:22,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030205577] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:43:22,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:43:22,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-26 23:43:22,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332315080] [2023-08-26 23:43:22,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:43:22,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 23:43:22,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:43:22,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 23:43:22,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=517, Unknown=3, NotChecked=0, Total=600 [2023-08-26 23:43:22,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 719 [2023-08-26 23:43:22,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 804 transitions, 21001 flow. Second operand has 25 states, 25 states have (on average 242.68) internal successors, (6067), 25 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:22,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:43:22,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 719 [2023-08-26 23:43:22,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:43:25,378 INFO L124 PetriNetUnfolderBase]: 2090/4301 cut-off events. [2023-08-26 23:43:25,378 INFO L125 PetriNetUnfolderBase]: For 124590/124590 co-relation queries the response was YES. [2023-08-26 23:43:25,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44530 conditions, 4301 events. 2090/4301 cut-off events. For 124590/124590 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 33634 event pairs, 76 based on Foata normal form. 16/4317 useless extension candidates. Maximal degree in co-relation 44400. Up to 1148 conditions per place. [2023-08-26 23:43:25,440 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 339 selfloop transitions, 560 changer transitions 0/899 dead transitions. [2023-08-26 23:43:25,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 899 transitions, 24097 flow [2023-08-26 23:43:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 23:43:25,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 23:43:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5668 transitions. [2023-08-26 23:43:25,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3427465683013848 [2023-08-26 23:43:25,444 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5668 transitions. [2023-08-26 23:43:25,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5668 transitions. [2023-08-26 23:43:25,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:43:25,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5668 transitions. [2023-08-26 23:43:25,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 246.43478260869566) internal successors, (5668), 23 states have internal predecessors, (5668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:25,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:25,454 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:25,454 INFO L175 Difference]: Start difference. First operand has 431 places, 804 transitions, 21001 flow. Second operand 23 states and 5668 transitions. [2023-08-26 23:43:25,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 899 transitions, 24097 flow [2023-08-26 23:43:26,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 899 transitions, 23533 flow, removed 10 selfloop flow, removed 11 redundant places. [2023-08-26 23:43:26,426 INFO L231 Difference]: Finished difference. Result has 443 places, 833 transitions, 22950 flow [2023-08-26 23:43:26,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=20178, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=22950, PETRI_PLACES=443, PETRI_TRANSITIONS=833} [2023-08-26 23:43:26,427 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2023-08-26 23:43:26,427 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 833 transitions, 22950 flow [2023-08-26 23:43:26,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 242.68) internal successors, (6067), 25 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:26,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:43:26,428 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:43:26,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-08-26 23:43:26,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:43:26,635 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:43:26,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:43:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1658916358, now seen corresponding path program 35 times [2023-08-26 23:43:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:43:26,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348319678] [2023-08-26 23:43:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:43:26,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:43:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:43:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:27,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:43:27,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348319678] [2023-08-26 23:43:27,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348319678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:43:27,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863395310] [2023-08-26 23:43:27,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 23:43:27,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:43:27,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:43:27,078 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) [2023-08-26 23:43:27,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-26 23:43:27,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 23:43:27,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:43:27,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-26 23:43:27,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:43:27,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:43:27,433 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 52 treesize of output 48 [2023-08-26 23:43:27,564 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 91 treesize of output 59 [2023-08-26 23:43:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:27,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:43:28,207 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:43:28,207 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 137 treesize of output 89 [2023-08-26 23:43:28,288 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 19 treesize of output 15 [2023-08-26 23:43:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:28,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863395310] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:43:28,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:43:28,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-26 23:43:28,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759094055] [2023-08-26 23:43:28,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:43:28,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 23:43:28,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:43:28,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 23:43:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=559, Unknown=2, NotChecked=0, Total=650 [2023-08-26 23:43:28,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 719 [2023-08-26 23:43:28,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 833 transitions, 22950 flow. Second operand has 26 states, 26 states have (on average 242.69230769230768) internal successors, (6310), 26 states have internal predecessors, (6310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:28,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:43:28,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 719 [2023-08-26 23:43:28,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:43:31,383 INFO L124 PetriNetUnfolderBase]: 2072/4253 cut-off events. [2023-08-26 23:43:31,383 INFO L125 PetriNetUnfolderBase]: For 138244/138244 co-relation queries the response was YES. [2023-08-26 23:43:31,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45917 conditions, 4253 events. 2072/4253 cut-off events. For 138244/138244 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 32978 event pairs, 296 based on Foata normal form. 12/4265 useless extension candidates. Maximal degree in co-relation 45785. Up to 1550 conditions per place. [2023-08-26 23:43:31,438 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 448 selfloop transitions, 423 changer transitions 5/876 dead transitions. [2023-08-26 23:43:31,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 876 transitions, 24885 flow [2023-08-26 23:43:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 23:43:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 23:43:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5644 transitions. [2023-08-26 23:43:31,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34129527725705994 [2023-08-26 23:43:31,442 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5644 transitions. [2023-08-26 23:43:31,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5644 transitions. [2023-08-26 23:43:31,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:43:31,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5644 transitions. [2023-08-26 23:43:31,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 245.3913043478261) internal successors, (5644), 23 states have internal predecessors, (5644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:31,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:31,453 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 719.0) internal successors, (17256), 24 states have internal predecessors, (17256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:31,453 INFO L175 Difference]: Start difference. First operand has 443 places, 833 transitions, 22950 flow. Second operand 23 states and 5644 transitions. [2023-08-26 23:43:31,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 876 transitions, 24885 flow [2023-08-26 23:43:32,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 876 transitions, 24021 flow, removed 89 selfloop flow, removed 16 redundant places. [2023-08-26 23:43:32,484 INFO L231 Difference]: Finished difference. Result has 447 places, 826 transitions, 22715 flow [2023-08-26 23:43:32,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=21926, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=22715, PETRI_PLACES=447, PETRI_TRANSITIONS=826} [2023-08-26 23:43:32,485 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2023-08-26 23:43:32,485 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 826 transitions, 22715 flow [2023-08-26 23:43:32,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 242.69230769230768) internal successors, (6310), 26 states have internal predecessors, (6310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:32,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:43:32,487 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:43:32,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-08-26 23:43:32,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:43:32,692 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:43:32,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:43:32,693 INFO L85 PathProgramCache]: Analyzing trace with hash 904731363, now seen corresponding path program 36 times [2023-08-26 23:43:32,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:43:32,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920268449] [2023-08-26 23:43:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:43:32,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:43:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:43:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:33,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:43:33,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920268449] [2023-08-26 23:43:33,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920268449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:43:33,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729280183] [2023-08-26 23:43:33,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 23:43:33,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:43:33,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:43:33,694 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) [2023-08-26 23:43:33,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-26 23:43:33,955 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 23:43:33,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:43:33,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-26 23:43:33,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:43:34,477 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:43:34,477 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 199 treesize of output 127 [2023-08-26 23:43:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:34,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:43:40,890 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:43:40,890 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 554 treesize of output 389 [2023-08-26 23:43:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:43:41,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729280183] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:43:41,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:43:41,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2023-08-26 23:43:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616406329] [2023-08-26 23:43:41,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:43:41,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-26 23:43:41,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:43:41,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-26 23:43:41,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2023-08-26 23:43:41,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:43:41,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 826 transitions, 22715 flow. Second operand has 28 states, 28 states have (on average 235.85714285714286) internal successors, (6604), 28 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:43:41,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:43:41,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:43:41,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:44:06,809 INFO L124 PetriNetUnfolderBase]: 3778/7777 cut-off events. [2023-08-26 23:44:06,809 INFO L125 PetriNetUnfolderBase]: For 242885/242885 co-relation queries the response was YES. [2023-08-26 23:44:06,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80542 conditions, 7777 events. 3778/7777 cut-off events. For 242885/242885 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 67298 event pairs, 462 based on Foata normal form. 34/7811 useless extension candidates. Maximal degree in co-relation 80412. Up to 1594 conditions per place. [2023-08-26 23:44:06,917 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 919 selfloop transitions, 683 changer transitions 54/1656 dead transitions. [2023-08-26 23:44:06,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1656 transitions, 43750 flow [2023-08-26 23:44:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-26 23:44:06,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-26 23:44:06,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 15111 transitions. [2023-08-26 23:44:06,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3335982515398371 [2023-08-26 23:44:06,925 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 15111 transitions. [2023-08-26 23:44:06,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 15111 transitions. [2023-08-26 23:44:06,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:44:06,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 15111 transitions. [2023-08-26 23:44:06,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 239.85714285714286) internal successors, (15111), 63 states have internal predecessors, (15111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:44:06,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 719.0) internal successors, (46016), 64 states have internal predecessors, (46016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:44:06,957 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 719.0) internal successors, (46016), 64 states have internal predecessors, (46016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:44:06,957 INFO L175 Difference]: Start difference. First operand has 447 places, 826 transitions, 22715 flow. Second operand 63 states and 15111 transitions. [2023-08-26 23:44:06,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1656 transitions, 43750 flow [2023-08-26 23:44:08,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 1656 transitions, 42684 flow, removed 33 selfloop flow, removed 16 redundant places. [2023-08-26 23:44:08,964 INFO L231 Difference]: Finished difference. Result has 528 places, 1165 transitions, 31680 flow [2023-08-26 23:44:08,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=21709, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=389, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=31680, PETRI_PLACES=528, PETRI_TRANSITIONS=1165} [2023-08-26 23:44:08,965 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 487 predicate places. [2023-08-26 23:44:08,965 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 1165 transitions, 31680 flow [2023-08-26 23:44:08,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 235.85714285714286) internal successors, (6604), 28 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:44:08,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:44:08,966 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:44:08,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-08-26 23:44:09,166 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,SelfDestructingSolverStorable62 [2023-08-26 23:44:09,167 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:44:09,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:44:09,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1477920765, now seen corresponding path program 37 times [2023-08-26 23:44:09,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:44:09,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737207610] [2023-08-26 23:44:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:44:09,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:44:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:44:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:44:10,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:44:10,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737207610] [2023-08-26 23:44:10,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737207610] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:44:10,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27750621] [2023-08-26 23:44:10,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 23:44:10,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:44:10,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:44:10,371 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) [2023-08-26 23:44:10,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-26 23:44:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:44:10,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-26 23:44:10,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:44:11,031 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:44:11,031 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 219 treesize of output 139 [2023-08-26 23:44:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:44:11,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:44:13,808 INFO L322 Elim1Store]: treesize reduction 13, result has 62.9 percent of original size [2023-08-26 23:44:13,809 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 140 treesize of output 85 [2023-08-26 23:44:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:44:13,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27750621] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:44:13,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:44:13,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-08-26 23:44:13,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109476806] [2023-08-26 23:44:13,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:44:13,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 23:44:13,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:44:13,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 23:44:13,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2023-08-26 23:44:13,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:44:13,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1165 transitions, 31680 flow. Second operand has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:44:13,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:44:13,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:44:13,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:44:29,257 INFO L124 PetriNetUnfolderBase]: 3968/8157 cut-off events. [2023-08-26 23:44:29,257 INFO L125 PetriNetUnfolderBase]: For 301256/301256 co-relation queries the response was YES. [2023-08-26 23:44:29,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91076 conditions, 8157 events. 3968/8157 cut-off events. For 301256/301256 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 70989 event pairs, 648 based on Foata normal form. 80/8237 useless extension candidates. Maximal degree in co-relation 90908. Up to 3355 conditions per place. [2023-08-26 23:44:29,382 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 638 selfloop transitions, 722 changer transitions 73/1433 dead transitions. [2023-08-26 23:44:29,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 1433 transitions, 40095 flow [2023-08-26 23:44:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-26 23:44:29,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-26 23:44:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 13824 transitions. [2023-08-26 23:44:29,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3314948923313031 [2023-08-26 23:44:29,390 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 13824 transitions. [2023-08-26 23:44:29,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 13824 transitions. [2023-08-26 23:44:29,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:44:29,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 13824 transitions. [2023-08-26 23:44:29,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 238.3448275862069) internal successors, (13824), 58 states have internal predecessors, (13824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:44:29,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 719.0) internal successors, (42421), 59 states have internal predecessors, (42421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:44:29,424 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 719.0) internal successors, (42421), 59 states have internal predecessors, (42421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:44:29,424 INFO L175 Difference]: Start difference. First operand has 528 places, 1165 transitions, 31680 flow. Second operand 58 states and 13824 transitions. [2023-08-26 23:44:29,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 1433 transitions, 40095 flow [2023-08-26 23:44:32,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 1433 transitions, 37911 flow, removed 547 selfloop flow, removed 19 redundant places. [2023-08-26 23:44:32,200 INFO L231 Difference]: Finished difference. Result has 564 places, 1276 transitions, 34611 flow [2023-08-26 23:44:32,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=29349, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=601, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=34611, PETRI_PLACES=564, PETRI_TRANSITIONS=1276} [2023-08-26 23:44:32,201 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 523 predicate places. [2023-08-26 23:44:32,201 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 1276 transitions, 34611 flow [2023-08-26 23:44:32,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:44:32,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:44:32,202 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:44:32,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-08-26 23:44:32,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:44:32,413 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:44:32,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:44:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash 678628635, now seen corresponding path program 38 times [2023-08-26 23:44:32,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:44:32,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503904954] [2023-08-26 23:44:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:44:32,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:44:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:44:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:44:33,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:44:33,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503904954] [2023-08-26 23:44:33,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503904954] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:44:33,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842179787] [2023-08-26 23:44:33,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:44:33,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:44:33,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:44:33,325 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) [2023-08-26 23:44:33,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-08-26 23:44:33,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 23:44:33,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:44:33,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-26 23:44:33,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:44:34,166 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:44:34,166 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 183 treesize of output 119 [2023-08-26 23:44:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:44:34,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:44:37,632 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:44:37,632 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 269 treesize of output 197 [2023-08-26 23:44:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:44:37,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842179787] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:44:37,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:44:37,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 26 [2023-08-26 23:44:37,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729770896] [2023-08-26 23:44:37,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:44:37,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 23:44:37,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:44:37,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 23:44:37,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2023-08-26 23:44:37,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:44:37,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 1276 transitions, 34611 flow. Second operand has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:44:37,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:44:37,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:44:37,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:45:08,678 INFO L124 PetriNetUnfolderBase]: 4668/9685 cut-off events. [2023-08-26 23:45:08,678 INFO L125 PetriNetUnfolderBase]: For 360311/360311 co-relation queries the response was YES. [2023-08-26 23:45:08,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104437 conditions, 9685 events. 4668/9685 cut-off events. For 360311/360311 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 87774 event pairs, 524 based on Foata normal form. 80/9765 useless extension candidates. Maximal degree in co-relation 104274. Up to 2911 conditions per place. [2023-08-26 23:45:08,828 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 685 selfloop transitions, 1000 changer transitions 82/1767 dead transitions. [2023-08-26 23:45:08,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 1767 transitions, 48418 flow [2023-08-26 23:45:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-08-26 23:45:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-08-26 23:45:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 17415 transitions. [2023-08-26 23:45:08,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33179644483395887 [2023-08-26 23:45:08,842 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 17415 transitions. [2023-08-26 23:45:08,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 17415 transitions. [2023-08-26 23:45:08,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:45:08,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 17415 transitions. [2023-08-26 23:45:08,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 238.56164383561645) internal successors, (17415), 73 states have internal predecessors, (17415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:45:08,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 719.0) internal successors, (53206), 74 states have internal predecessors, (53206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:45:08,884 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 719.0) internal successors, (53206), 74 states have internal predecessors, (53206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:45:08,884 INFO L175 Difference]: Start difference. First operand has 564 places, 1276 transitions, 34611 flow. Second operand 73 states and 17415 transitions. [2023-08-26 23:45:08,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 1767 transitions, 48418 flow [2023-08-26 23:45:12,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 1767 transitions, 45446 flow, removed 1037 selfloop flow, removed 26 redundant places. [2023-08-26 23:45:12,439 INFO L231 Difference]: Finished difference. Result has 612 places, 1521 transitions, 41476 flow [2023-08-26 23:45:12,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=32426, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=773, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=41476, PETRI_PLACES=612, PETRI_TRANSITIONS=1521} [2023-08-26 23:45:12,441 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 571 predicate places. [2023-08-26 23:45:12,441 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 1521 transitions, 41476 flow [2023-08-26 23:45:12,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:45:12,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:45:12,442 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:45:12,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-08-26 23:45:12,651 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,SelfDestructingSolverStorable64 [2023-08-26 23:45:12,651 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:45:12,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:45:12,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1472793677, now seen corresponding path program 39 times [2023-08-26 23:45:12,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:45:12,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240753719] [2023-08-26 23:45:12,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:45:12,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:45:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:45:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:45:13,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:45:13,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240753719] [2023-08-26 23:45:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240753719] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:45:13,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735993384] [2023-08-26 23:45:13,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 23:45:13,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:45:13,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:45:13,761 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) [2023-08-26 23:45:13,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-08-26 23:45:14,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 23:45:14,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:45:14,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-26 23:45:14,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:45:14,398 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 194 treesize of output 126 [2023-08-26 23:45:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:45:14,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:45:16,886 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:45:16,886 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 336 treesize of output 246 [2023-08-26 23:45:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:45:17,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735993384] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:45:17,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:45:17,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 28 [2023-08-26 23:45:17,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346568921] [2023-08-26 23:45:17,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:45:17,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-26 23:45:17,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:45:17,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-26 23:45:17,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2023-08-26 23:45:17,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:45:17,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 1521 transitions, 41476 flow. Second operand has 29 states, 29 states have (on average 235.89655172413794) internal successors, (6841), 29 states have internal predecessors, (6841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:45:17,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:45:17,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:45:17,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:45:34,776 INFO L124 PetriNetUnfolderBase]: 6238/12977 cut-off events. [2023-08-26 23:45:34,776 INFO L125 PetriNetUnfolderBase]: For 465142/465142 co-relation queries the response was YES. [2023-08-26 23:45:34,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141229 conditions, 12977 events. 6238/12977 cut-off events. For 465142/465142 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 122985 event pairs, 543 based on Foata normal form. 74/13051 useless extension candidates. Maximal degree in co-relation 141065. Up to 4580 conditions per place. [2023-08-26 23:45:34,985 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 1226 selfloop transitions, 980 changer transitions 81/2287 dead transitions. [2023-08-26 23:45:34,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 2287 transitions, 65660 flow [2023-08-26 23:45:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-26 23:45:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-26 23:45:34,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 12472 transitions. [2023-08-26 23:45:34,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3335829677971542 [2023-08-26 23:45:34,992 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 12472 transitions. [2023-08-26 23:45:34,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 12472 transitions. [2023-08-26 23:45:34,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:45:34,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 12472 transitions. [2023-08-26 23:45:35,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 239.84615384615384) internal successors, (12472), 52 states have internal predecessors, (12472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:45:35,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 719.0) internal successors, (38107), 53 states have internal predecessors, (38107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:45:35,022 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 719.0) internal successors, (38107), 53 states have internal predecessors, (38107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:45:35,022 INFO L175 Difference]: Start difference. First operand has 612 places, 1521 transitions, 41476 flow. Second operand 52 states and 12472 transitions. [2023-08-26 23:45:35,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 2287 transitions, 65660 flow [2023-08-26 23:45:41,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 2287 transitions, 63149 flow, removed 846 selfloop flow, removed 29 redundant places. [2023-08-26 23:45:41,058 INFO L231 Difference]: Finished difference. Result has 650 places, 1853 transitions, 52193 flow [2023-08-26 23:45:41,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=39425, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=664, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=52193, PETRI_PLACES=650, PETRI_TRANSITIONS=1853} [2023-08-26 23:45:41,059 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 609 predicate places. [2023-08-26 23:45:41,059 INFO L495 AbstractCegarLoop]: Abstraction has has 650 places, 1853 transitions, 52193 flow [2023-08-26 23:45:41,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 235.89655172413794) internal successors, (6841), 29 states have internal predecessors, (6841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:45:41,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:45:41,060 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:45:41,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-08-26 23:45:41,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:45:41,261 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:45:41,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:45:41,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1174723383, now seen corresponding path program 40 times [2023-08-26 23:45:41,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:45:41,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302450246] [2023-08-26 23:45:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:45:41,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:45:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:45:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:45:42,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:45:42,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302450246] [2023-08-26 23:45:42,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302450246] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:45:42,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853958733] [2023-08-26 23:45:42,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 23:45:42,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:45:42,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:45:42,415 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) [2023-08-26 23:45:42,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-08-26 23:45:42,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 23:45:42,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:45:42,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-26 23:45:42,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:45:43,003 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 254 treesize of output 140 [2023-08-26 23:45:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:45:43,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:45:45,433 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:45:45,433 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 384 treesize of output 267 [2023-08-26 23:45:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:45:45,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853958733] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:45:45,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:45:45,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 26 [2023-08-26 23:45:45,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833263784] [2023-08-26 23:45:45,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:45:45,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 23:45:45,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:45:45,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 23:45:45,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2023-08-26 23:45:45,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:45:45,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 1853 transitions, 52193 flow. Second operand has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:45:45,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:45:45,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:45:45,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:46:05,312 INFO L124 PetriNetUnfolderBase]: 7406/15247 cut-off events. [2023-08-26 23:46:05,313 INFO L125 PetriNetUnfolderBase]: For 582419/582419 co-relation queries the response was YES. [2023-08-26 23:46:05,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169736 conditions, 15247 events. 7406/15247 cut-off events. For 582419/582419 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 146222 event pairs, 1498 based on Foata normal form. 50/15297 useless extension candidates. Maximal degree in co-relation 169557. Up to 7357 conditions per place. [2023-08-26 23:46:05,568 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 1574 selfloop transitions, 892 changer transitions 67/2533 dead transitions. [2023-08-26 23:46:05,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 2533 transitions, 74434 flow [2023-08-26 23:46:05,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-26 23:46:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-26 23:46:05,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10773 transitions. [2023-08-26 23:46:05,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33296244784422807 [2023-08-26 23:46:05,575 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10773 transitions. [2023-08-26 23:46:05,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10773 transitions. [2023-08-26 23:46:05,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:46:05,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10773 transitions. [2023-08-26 23:46:05,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 239.4) internal successors, (10773), 45 states have internal predecessors, (10773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:05,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 719.0) internal successors, (33074), 46 states have internal predecessors, (33074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:05,598 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 719.0) internal successors, (33074), 46 states have internal predecessors, (33074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:05,598 INFO L175 Difference]: Start difference. First operand has 650 places, 1853 transitions, 52193 flow. Second operand 45 states and 10773 transitions. [2023-08-26 23:46:05,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 2533 transitions, 74434 flow [2023-08-26 23:46:13,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 2533 transitions, 71475 flow, removed 1253 selfloop flow, removed 14 redundant places. [2023-08-26 23:46:13,935 INFO L231 Difference]: Finished difference. Result has 691 places, 2288 transitions, 63850 flow [2023-08-26 23:46:13,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=50047, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=63850, PETRI_PLACES=691, PETRI_TRANSITIONS=2288} [2023-08-26 23:46:13,937 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 650 predicate places. [2023-08-26 23:46:13,937 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 2288 transitions, 63850 flow [2023-08-26 23:46:13,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:13,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:46:13,938 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:46:13,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-08-26 23:46:14,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:46:14,138 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:46:14,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:46:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1324501459, now seen corresponding path program 41 times [2023-08-26 23:46:14,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:46:14,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716937568] [2023-08-26 23:46:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:46:14,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:46:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:46:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:46:14,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:46:14,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716937568] [2023-08-26 23:46:14,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716937568] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:46:14,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307723119] [2023-08-26 23:46:14,968 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 23:46:14,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:46:14,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:46:14,969 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) [2023-08-26 23:46:14,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-08-26 23:46:15,287 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 23:46:15,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:46:15,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-26 23:46:15,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:46:15,861 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:46:15,861 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 166 treesize of output 92 [2023-08-26 23:46:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:46:15,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:46:19,131 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:46:19,132 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 495 treesize of output 359 [2023-08-26 23:46:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:46:20,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307723119] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:46:20,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:46:20,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2023-08-26 23:46:20,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7029883] [2023-08-26 23:46:20,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:46:20,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-26 23:46:20,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:46:20,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-26 23:46:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2023-08-26 23:46:20,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:46:20,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 2288 transitions, 63850 flow. Second operand has 28 states, 28 states have (on average 235.85714285714286) internal successors, (6604), 28 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:20,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:46:20,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:46:20,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:46:39,483 INFO L124 PetriNetUnfolderBase]: 7570/15449 cut-off events. [2023-08-26 23:46:39,483 INFO L125 PetriNetUnfolderBase]: For 586906/586906 co-relation queries the response was YES. [2023-08-26 23:46:39,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172017 conditions, 15449 events. 7570/15449 cut-off events. For 586906/586906 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 147166 event pairs, 1144 based on Foata normal form. 36/15485 useless extension candidates. Maximal degree in co-relation 171823. Up to 5140 conditions per place. [2023-08-26 23:46:39,755 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 1383 selfloop transitions, 1084 changer transitions 41/2508 dead transitions. [2023-08-26 23:46:39,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 2508 transitions, 74406 flow [2023-08-26 23:46:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-26 23:46:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-26 23:46:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7177 transitions. [2023-08-26 23:46:39,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33273064441353734 [2023-08-26 23:46:39,759 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7177 transitions. [2023-08-26 23:46:39,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7177 transitions. [2023-08-26 23:46:39,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:46:39,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7177 transitions. [2023-08-26 23:46:39,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 239.23333333333332) internal successors, (7177), 30 states have internal predecessors, (7177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:39,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:39,773 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:39,773 INFO L175 Difference]: Start difference. First operand has 691 places, 2288 transitions, 63850 flow. Second operand 30 states and 7177 transitions. [2023-08-26 23:46:39,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 2508 transitions, 74406 flow [2023-08-26 23:46:48,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 2508 transitions, 73054 flow, removed 623 selfloop flow, removed 15 redundant places. [2023-08-26 23:46:48,721 INFO L231 Difference]: Finished difference. Result has 702 places, 2392 transitions, 67790 flow [2023-08-26 23:46:48,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=62518, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=994, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=67790, PETRI_PLACES=702, PETRI_TRANSITIONS=2392} [2023-08-26 23:46:48,723 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 661 predicate places. [2023-08-26 23:46:48,723 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 2392 transitions, 67790 flow [2023-08-26 23:46:48,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 235.85714285714286) internal successors, (6604), 28 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:48,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:46:48,724 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:46:48,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-08-26 23:46:48,924 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,SelfDestructingSolverStorable67 [2023-08-26 23:46:48,924 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:46:48,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:46:48,925 INFO L85 PathProgramCache]: Analyzing trace with hash 163295917, now seen corresponding path program 42 times [2023-08-26 23:46:48,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:46:48,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479525135] [2023-08-26 23:46:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:46:48,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:46:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:46:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:46:49,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:46:49,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479525135] [2023-08-26 23:46:49,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479525135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:46:49,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704744396] [2023-08-26 23:46:49,818 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 23:46:49,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:46:49,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:46:49,819 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) [2023-08-26 23:46:49,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-08-26 23:46:50,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 23:46:50,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:46:50,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-26 23:46:50,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:46:50,801 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:46:50,802 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 192 treesize of output 124 [2023-08-26 23:46:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:46:51,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:46:54,815 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:46:54,816 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 405 treesize of output 294 [2023-08-26 23:46:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:46:55,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704744396] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:46:55,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:46:55,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 26 [2023-08-26 23:46:55,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942777714] [2023-08-26 23:46:55,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:46:55,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 23:46:55,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:46:55,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 23:46:55,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2023-08-26 23:46:55,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:46:55,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 2392 transitions, 67790 flow. Second operand has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:55,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:46:55,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:46:55,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:47:13,453 INFO L124 PetriNetUnfolderBase]: 8072/16631 cut-off events. [2023-08-26 23:47:13,454 INFO L125 PetriNetUnfolderBase]: For 656550/656550 co-relation queries the response was YES. [2023-08-26 23:47:13,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185055 conditions, 16631 events. 8072/16631 cut-off events. For 656550/656550 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 161953 event pairs, 1200 based on Foata normal form. 36/16667 useless extension candidates. Maximal degree in co-relation 184861. Up to 5362 conditions per place. [2023-08-26 23:47:13,750 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 1455 selfloop transitions, 1163 changer transitions 48/2666 dead transitions. [2023-08-26 23:47:13,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 2666 transitions, 80108 flow [2023-08-26 23:47:13,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-26 23:47:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-26 23:47:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 7413 transitions. [2023-08-26 23:47:13,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.332585580331105 [2023-08-26 23:47:13,754 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 7413 transitions. [2023-08-26 23:47:13,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 7413 transitions. [2023-08-26 23:47:13,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:47:13,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 7413 transitions. [2023-08-26 23:47:13,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 239.1290322580645) internal successors, (7413), 31 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:13,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 719.0) internal successors, (23008), 32 states have internal predecessors, (23008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:13,768 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 719.0) internal successors, (23008), 32 states have internal predecessors, (23008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:13,768 INFO L175 Difference]: Start difference. First operand has 702 places, 2392 transitions, 67790 flow. Second operand 31 states and 7413 transitions. [2023-08-26 23:47:13,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 2666 transitions, 80108 flow [2023-08-26 23:47:23,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 2666 transitions, 78952 flow, removed 296 selfloop flow, removed 17 redundant places. [2023-08-26 23:47:23,957 INFO L231 Difference]: Finished difference. Result has 721 places, 2513 transitions, 72709 flow [2023-08-26 23:47:23,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=66742, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1053, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=72709, PETRI_PLACES=721, PETRI_TRANSITIONS=2513} [2023-08-26 23:47:23,959 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 680 predicate places. [2023-08-26 23:47:23,959 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 2513 transitions, 72709 flow [2023-08-26 23:47:23,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 235.8148148148148) internal successors, (6367), 27 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:23,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:47:23,960 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:47:23,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-08-26 23:47:24,165 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,SelfDestructingSolverStorable68 [2023-08-26 23:47:24,165 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:47:24,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:47:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash 129564589, now seen corresponding path program 43 times [2023-08-26 23:47:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:47:24,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088854986] [2023-08-26 23:47:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:24,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:47:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:47:24,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:47:24,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088854986] [2023-08-26 23:47:24,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088854986] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:47:24,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672425368] [2023-08-26 23:47:24,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 23:47:24,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:47:24,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:47:24,622 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) [2023-08-26 23:47:24,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-08-26 23:47:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:24,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-26 23:47:24,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:47:25,059 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 111 treesize of output 79 [2023-08-26 23:47:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 23:47:25,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:47:25,371 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:47:25,372 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 49 [2023-08-26 23:47:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 23:47:25,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672425368] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:47:25,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:47:25,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 19 [2023-08-26 23:47:25,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343725280] [2023-08-26 23:47:25,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:47:25,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 23:47:25,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:47:25,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 23:47:25,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-08-26 23:47:25,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 719 [2023-08-26 23:47:25,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 2513 transitions, 72709 flow. Second operand has 19 states, 19 states have (on average 247.10526315789474) internal successors, (4695), 19 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:25,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:47:25,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 719 [2023-08-26 23:47:25,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:47:38,390 INFO L124 PetriNetUnfolderBase]: 7888/16107 cut-off events. [2023-08-26 23:47:38,390 INFO L125 PetriNetUnfolderBase]: For 683638/683638 co-relation queries the response was YES. [2023-08-26 23:47:38,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183945 conditions, 16107 events. 7888/16107 cut-off events. For 683638/683638 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 154525 event pairs, 2304 based on Foata normal form. 48/16155 useless extension candidates. Maximal degree in co-relation 183743. Up to 10125 conditions per place. [2023-08-26 23:47:38,726 INFO L140 encePairwiseOnDemand]: 712/719 looper letters, 1846 selfloop transitions, 645 changer transitions 26/2517 dead transitions. [2023-08-26 23:47:38,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 2517 transitions, 77545 flow [2023-08-26 23:47:38,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 23:47:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 23:47:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3495 transitions. [2023-08-26 23:47:38,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472084243989668 [2023-08-26 23:47:38,729 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3495 transitions. [2023-08-26 23:47:38,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3495 transitions. [2023-08-26 23:47:38,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:47:38,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3495 transitions. [2023-08-26 23:47:38,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 249.64285714285714) internal successors, (3495), 14 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:38,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:38,735 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 719.0) internal successors, (10785), 15 states have internal predecessors, (10785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:38,735 INFO L175 Difference]: Start difference. First operand has 721 places, 2513 transitions, 72709 flow. Second operand 14 states and 3495 transitions. [2023-08-26 23:47:38,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 2517 transitions, 77545 flow [2023-08-26 23:47:48,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 2517 transitions, 76101 flow, removed 217 selfloop flow, removed 17 redundant places. [2023-08-26 23:47:48,938 INFO L231 Difference]: Finished difference. Result has 712 places, 2467 transitions, 71382 flow [2023-08-26 23:47:48,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=70103, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=635, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1833, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=71382, PETRI_PLACES=712, PETRI_TRANSITIONS=2467} [2023-08-26 23:47:48,940 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 671 predicate places. [2023-08-26 23:47:48,940 INFO L495 AbstractCegarLoop]: Abstraction has has 712 places, 2467 transitions, 71382 flow [2023-08-26 23:47:48,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 247.10526315789474) internal successors, (4695), 19 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:48,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:47:48,941 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:47:48,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-08-26 23:47:49,141 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,SelfDestructingSolverStorable69 [2023-08-26 23:47:49,141 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:47:49,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:47:49,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1142867257, now seen corresponding path program 44 times [2023-08-26 23:47:49,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:47:49,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550215644] [2023-08-26 23:47:49,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:49,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:47:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:47:50,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:47:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550215644] [2023-08-26 23:47:50,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550215644] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:47:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250016402] [2023-08-26 23:47:50,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:47:50,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:47:50,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:47:50,125 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) [2023-08-26 23:47:50,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-08-26 23:47:50,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 23:47:50,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:47:50,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-26 23:47:50,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:47:51,183 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:47:51,184 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 231 treesize of output 147 [2023-08-26 23:47:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:47:51,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:47:54,933 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:47:54,933 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 479 treesize of output 321 [2023-08-26 23:47:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:47:55,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250016402] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:47:55,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:47:55,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 31 [2023-08-26 23:47:55,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431275186] [2023-08-26 23:47:55,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:47:55,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 23:47:55,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:47:55,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 23:47:55,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2023-08-26 23:47:55,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-26 23:47:55,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 2467 transitions, 71382 flow. Second operand has 32 states, 32 states have (on average 218.6875) internal successors, (6998), 32 states have internal predecessors, (6998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:55,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:47:55,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-26 23:47:55,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:48:18,505 INFO L124 PetriNetUnfolderBase]: 8238/16927 cut-off events. [2023-08-26 23:48:18,506 INFO L125 PetriNetUnfolderBase]: For 735588/735588 co-relation queries the response was YES. [2023-08-26 23:48:18,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190941 conditions, 16927 events. 8238/16927 cut-off events. For 735588/735588 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 164784 event pairs, 2181 based on Foata normal form. 24/16951 useless extension candidates. Maximal degree in co-relation 190743. Up to 10210 conditions per place. [2023-08-26 23:48:18,815 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 1851 selfloop transitions, 865 changer transitions 29/2745 dead transitions. [2023-08-26 23:48:18,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 2745 transitions, 83451 flow [2023-08-26 23:48:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-26 23:48:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-26 23:48:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 7774 transitions. [2023-08-26 23:48:18,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3089211206040135 [2023-08-26 23:48:18,820 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 7774 transitions. [2023-08-26 23:48:18,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 7774 transitions. [2023-08-26 23:48:18,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:48:18,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 7774 transitions. [2023-08-26 23:48:18,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 222.11428571428573) internal successors, (7774), 35 states have internal predecessors, (7774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:18,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 719.0) internal successors, (25884), 36 states have internal predecessors, (25884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:18,835 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 719.0) internal successors, (25884), 36 states have internal predecessors, (25884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:18,835 INFO L175 Difference]: Start difference. First operand has 712 places, 2467 transitions, 71382 flow. Second operand 35 states and 7774 transitions. [2023-08-26 23:48:18,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 2745 transitions, 83451 flow [2023-08-26 23:48:29,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 730 places, 2745 transitions, 82661 flow, removed 21 selfloop flow, removed 11 redundant places. [2023-08-26 23:48:29,632 INFO L231 Difference]: Finished difference. Result has 737 places, 2600 transitions, 76627 flow [2023-08-26 23:48:29,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=70613, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=742, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=76627, PETRI_PLACES=737, PETRI_TRANSITIONS=2600} [2023-08-26 23:48:29,634 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 696 predicate places. [2023-08-26 23:48:29,634 INFO L495 AbstractCegarLoop]: Abstraction has has 737 places, 2600 transitions, 76627 flow [2023-08-26 23:48:29,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 218.6875) internal successors, (6998), 32 states have internal predecessors, (6998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:29,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:48:29,636 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:48:29,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-08-26 23:48:29,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:48:29,836 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:48:29,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:48:29,837 INFO L85 PathProgramCache]: Analyzing trace with hash 229900729, now seen corresponding path program 45 times [2023-08-26 23:48:29,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:48:29,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130594217] [2023-08-26 23:48:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:48:29,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:48:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:48:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:48:30,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:48:30,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130594217] [2023-08-26 23:48:30,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130594217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:48:30,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542501569] [2023-08-26 23:48:30,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 23:48:30,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:48:30,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:48:30,925 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) [2023-08-26 23:48:30,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-08-26 23:48:31,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 23:48:31,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:48:31,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-26 23:48:31,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:48:31,522 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 215 treesize of output 139 [2023-08-26 23:48:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 23:48:31,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:48:33,982 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:48:33,983 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 419 treesize of output 291 [2023-08-26 23:48:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:48:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542501569] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:48:34,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:48:34,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 31 [2023-08-26 23:48:34,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46501242] [2023-08-26 23:48:34,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:48:34,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 23:48:34,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:48:34,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 23:48:34,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2023-08-26 23:48:34,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 719 [2023-08-26 23:48:34,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 2600 transitions, 76627 flow. Second operand has 32 states, 32 states have (on average 222.6875) internal successors, (7126), 32 states have internal predecessors, (7126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:34,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:48:34,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 719 [2023-08-26 23:48:34,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:48:54,095 INFO L124 PetriNetUnfolderBase]: 9242/18483 cut-off events. [2023-08-26 23:48:54,095 INFO L125 PetriNetUnfolderBase]: For 868806/868806 co-relation queries the response was YES. [2023-08-26 23:48:54,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215813 conditions, 18483 events. 9242/18483 cut-off events. For 868806/868806 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 177423 event pairs, 2056 based on Foata normal form. 28/18511 useless extension candidates. Maximal degree in co-relation 215608. Up to 10205 conditions per place. [2023-08-26 23:48:54,486 INFO L140 encePairwiseOnDemand]: 709/719 looper letters, 2063 selfloop transitions, 1004 changer transitions 35/3102 dead transitions. [2023-08-26 23:48:54,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 768 places, 3102 transitions, 96801 flow [2023-08-26 23:48:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-26 23:48:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-26 23:48:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 7671 transitions. [2023-08-26 23:48:54,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3137936676756934 [2023-08-26 23:48:54,491 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 7671 transitions. [2023-08-26 23:48:54,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 7671 transitions. [2023-08-26 23:48:54,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:48:54,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 7671 transitions. [2023-08-26 23:48:54,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 225.61764705882354) internal successors, (7671), 34 states have internal predecessors, (7671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:54,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 719.0) internal successors, (25165), 35 states have internal predecessors, (25165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:54,506 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 719.0) internal successors, (25165), 35 states have internal predecessors, (25165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:54,506 INFO L175 Difference]: Start difference. First operand has 737 places, 2600 transitions, 76627 flow. Second operand 34 states and 7671 transitions. [2023-08-26 23:48:54,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 768 places, 3102 transitions, 96801 flow [2023-08-26 23:49:08,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 750 places, 3102 transitions, 95510 flow, removed 565 selfloop flow, removed 18 redundant places. [2023-08-26 23:49:08,313 INFO L231 Difference]: Finished difference. Result has 765 places, 2928 transitions, 89779 flow [2023-08-26 23:49:08,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=75256, PETRI_DIFFERENCE_MINUEND_PLACES=717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=746, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=89779, PETRI_PLACES=765, PETRI_TRANSITIONS=2928} [2023-08-26 23:49:08,314 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 724 predicate places. [2023-08-26 23:49:08,314 INFO L495 AbstractCegarLoop]: Abstraction has has 765 places, 2928 transitions, 89779 flow [2023-08-26 23:49:08,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 222.6875) internal successors, (7126), 32 states have internal predecessors, (7126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:08,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:08,315 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:08,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-08-26 23:49:08,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:08,516 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:49:08,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash -966906131, now seen corresponding path program 46 times [2023-08-26 23:49:08,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:08,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798819890] [2023-08-26 23:49:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:08,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:49:09,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:09,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798819890] [2023-08-26 23:49:09,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798819890] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:09,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040554752] [2023-08-26 23:49:09,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 23:49:09,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:09,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:09,421 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) [2023-08-26 23:49:09,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-08-26 23:49:09,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 23:49:09,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:49:09,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-26 23:49:09,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:10,309 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:49:10,309 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 186 treesize of output 118 [2023-08-26 23:49:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:49:10,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:49:13,802 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:49:13,802 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 547 treesize of output 407 [2023-08-26 23:49:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:49:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040554752] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:49:14,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:49:14,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-08-26 23:49:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100572124] [2023-08-26 23:49:14,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:49:14,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 23:49:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:49:14,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 23:49:14,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-08-26 23:49:14,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:49:14,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 765 places, 2928 transitions, 89779 flow. Second operand has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:14,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:49:14,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:49:14,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:49:37,367 INFO L124 PetriNetUnfolderBase]: 9380/18739 cut-off events. [2023-08-26 23:49:37,368 INFO L125 PetriNetUnfolderBase]: For 965974/965974 co-relation queries the response was YES. [2023-08-26 23:49:38,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225086 conditions, 18739 events. 9380/18739 cut-off events. For 965974/965974 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 180328 event pairs, 1662 based on Foata normal form. 34/18773 useless extension candidates. Maximal degree in co-relation 224869. Up to 8368 conditions per place. [2023-08-26 23:49:38,293 INFO L140 encePairwiseOnDemand]: 711/719 looper letters, 1748 selfloop transitions, 1355 changer transitions 37/3140 dead transitions. [2023-08-26 23:49:38,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 3140 transitions, 101986 flow [2023-08-26 23:49:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 23:49:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 23:49:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 6464 transitions. [2023-08-26 23:49:38,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3329727502189255 [2023-08-26 23:49:38,297 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 6464 transitions. [2023-08-26 23:49:38,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 6464 transitions. [2023-08-26 23:49:38,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:49:38,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 6464 transitions. [2023-08-26 23:49:38,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 239.40740740740742) internal successors, (6464), 27 states have internal predecessors, (6464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 719.0) internal successors, (20132), 28 states have internal predecessors, (20132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,309 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 719.0) internal successors, (20132), 28 states have internal predecessors, (20132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:38,309 INFO L175 Difference]: Start difference. First operand has 765 places, 2928 transitions, 89779 flow. Second operand 27 states and 6464 transitions. [2023-08-26 23:49:38,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 3140 transitions, 101986 flow [2023-08-26 23:49:54,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 774 places, 3140 transitions, 100666 flow, removed 576 selfloop flow, removed 14 redundant places. [2023-08-26 23:49:54,082 INFO L231 Difference]: Finished difference. Result has 781 places, 3010 transitions, 94243 flow [2023-08-26 23:49:54,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=88471, PETRI_DIFFERENCE_MINUEND_PLACES=748, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=94243, PETRI_PLACES=781, PETRI_TRANSITIONS=3010} [2023-08-26 23:49:54,085 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 740 predicate places. [2023-08-26 23:49:54,085 INFO L495 AbstractCegarLoop]: Abstraction has has 781 places, 3010 transitions, 94243 flow [2023-08-26 23:49:54,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:49:54,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:49:54,087 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:49:54,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-08-26 23:49:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:54,293 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:49:54,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:49:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1654315909, now seen corresponding path program 47 times [2023-08-26 23:49:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:49:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847723926] [2023-08-26 23:49:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:49:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:49:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:49:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:49:55,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:49:55,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847723926] [2023-08-26 23:49:55,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847723926] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:49:55,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80470434] [2023-08-26 23:49:55,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 23:49:55,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:49:55,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:49:55,365 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) [2023-08-26 23:49:55,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-08-26 23:49:55,670 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 23:49:55,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:49:55,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-26 23:49:55,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:49:56,128 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:49:56,129 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 198 treesize of output 126 [2023-08-26 23:49:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:49:56,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:50:00,033 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:50:00,034 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 250 treesize of output 164 [2023-08-26 23:50:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:50:00,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80470434] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:50:00,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:50:00,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 31 [2023-08-26 23:50:00,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836677398] [2023-08-26 23:50:00,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:50:00,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 23:50:00,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:50:00,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 23:50:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2023-08-26 23:50:00,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-26 23:50:00,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 781 places, 3010 transitions, 94243 flow. Second operand has 32 states, 32 states have (on average 218.71875) internal successors, (6999), 32 states have internal predecessors, (6999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:00,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:50:00,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-26 23:50:00,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:50:26,387 INFO L124 PetriNetUnfolderBase]: 9818/19563 cut-off events. [2023-08-26 23:50:26,388 INFO L125 PetriNetUnfolderBase]: For 1086436/1086436 co-relation queries the response was YES. [2023-08-26 23:50:27,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240719 conditions, 19563 events. 9818/19563 cut-off events. For 1086436/1086436 co-relation queries the response was YES. Maximal size of possible extension queue 1470. Compared 188809 event pairs, 1802 based on Foata normal form. 72/19635 useless extension candidates. Maximal degree in co-relation 240498. Up to 9969 conditions per place. [2023-08-26 23:50:27,378 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 1876 selfloop transitions, 1408 changer transitions 26/3310 dead transitions. [2023-08-26 23:50:27,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 3310 transitions, 109673 flow [2023-08-26 23:50:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-26 23:50:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-26 23:50:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6888 transitions. [2023-08-26 23:50:27,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090313607609135 [2023-08-26 23:50:27,384 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 6888 transitions. [2023-08-26 23:50:27,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 6888 transitions. [2023-08-26 23:50:27,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:50:27,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 6888 transitions. [2023-08-26 23:50:27,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 222.19354838709677) internal successors, (6888), 31 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:27,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 719.0) internal successors, (23008), 32 states have internal predecessors, (23008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:27,402 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 719.0) internal successors, (23008), 32 states have internal predecessors, (23008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:27,403 INFO L175 Difference]: Start difference. First operand has 781 places, 3010 transitions, 94243 flow. Second operand 31 states and 6888 transitions. [2023-08-26 23:50:27,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 3310 transitions, 109673 flow [2023-08-26 23:50:44,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 3310 transitions, 107701 flow, removed 393 selfloop flow, removed 16 redundant places. [2023-08-26 23:50:44,450 INFO L231 Difference]: Finished difference. Result has 803 places, 3182 transitions, 103248 flow [2023-08-26 23:50:44,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=91949, PETRI_DIFFERENCE_MINUEND_PLACES=762, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=103248, PETRI_PLACES=803, PETRI_TRANSITIONS=3182} [2023-08-26 23:50:44,453 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 762 predicate places. [2023-08-26 23:50:44,453 INFO L495 AbstractCegarLoop]: Abstraction has has 803 places, 3182 transitions, 103248 flow [2023-08-26 23:50:44,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 218.71875) internal successors, (6999), 32 states have internal predecessors, (6999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:44,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:50:44,454 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:50:44,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-08-26 23:50:44,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:50:44,662 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:50:44,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:50:44,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1682136019, now seen corresponding path program 48 times [2023-08-26 23:50:44,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:50:44,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175665011] [2023-08-26 23:50:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:50:44,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:50:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:50:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:50:45,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:50:45,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175665011] [2023-08-26 23:50:45,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175665011] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:50:45,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905901641] [2023-08-26 23:50:45,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 23:50:45,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:50:45,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:50:45,650 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) [2023-08-26 23:50:45,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-08-26 23:50:45,959 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 23:50:45,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:50:45,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-26 23:50:45,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:50:46,560 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:50:46,560 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 186 treesize of output 118 [2023-08-26 23:50:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:50:46,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:50:48,844 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:50:48,844 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 254 treesize of output 175 [2023-08-26 23:50:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:50:49,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905901641] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:50:49,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:50:49,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-08-26 23:50:49,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356364423] [2023-08-26 23:50:49,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:50:49,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 23:50:49,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:50:49,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 23:50:49,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-08-26 23:50:49,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 719 [2023-08-26 23:50:49,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 803 places, 3182 transitions, 103248 flow. Second operand has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:50:49,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:50:49,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 719 [2023-08-26 23:50:49,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:51:20,135 INFO L124 PetriNetUnfolderBase]: 11559/23654 cut-off events. [2023-08-26 23:51:20,135 INFO L125 PetriNetUnfolderBase]: For 1358925/1358925 co-relation queries the response was YES. [2023-08-26 23:51:20,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296077 conditions, 23654 events. 11559/23654 cut-off events. For 1358925/1358925 co-relation queries the response was YES. Maximal size of possible extension queue 1730. Compared 240808 event pairs, 1658 based on Foata normal form. 20/23674 useless extension candidates. Maximal degree in co-relation 295850. Up to 9078 conditions per place. [2023-08-26 23:51:20,946 INFO L140 encePairwiseOnDemand]: 710/719 looper letters, 1870 selfloop transitions, 2165 changer transitions 24/4059 dead transitions. [2023-08-26 23:51:20,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 831 places, 4059 transitions, 139757 flow [2023-08-26 23:51:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-26 23:51:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-26 23:51:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7168 transitions. [2023-08-26 23:51:20,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3323133982382939 [2023-08-26 23:51:20,951 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7168 transitions. [2023-08-26 23:51:20,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7168 transitions. [2023-08-26 23:51:20,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:51:20,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7168 transitions. [2023-08-26 23:51:20,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 238.93333333333334) internal successors, (7168), 30 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:20,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:20,965 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 719.0) internal successors, (22289), 31 states have internal predecessors, (22289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:20,965 INFO L175 Difference]: Start difference. First operand has 803 places, 3182 transitions, 103248 flow. Second operand 30 states and 7168 transitions. [2023-08-26 23:51:20,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 831 places, 4059 transitions, 139757 flow [2023-08-26 23:51:46,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 4059 transitions, 136467 flow, removed 815 selfloop flow, removed 13 redundant places. [2023-08-26 23:51:46,714 INFO L231 Difference]: Finished difference. Result has 837 places, 3753 transitions, 128598 flow [2023-08-26 23:51:46,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=100556, PETRI_DIFFERENCE_MINUEND_PLACES=789, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1609, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=128598, PETRI_PLACES=837, PETRI_TRANSITIONS=3753} [2023-08-26 23:51:46,717 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 796 predicate places. [2023-08-26 23:51:46,717 INFO L495 AbstractCegarLoop]: Abstraction has has 837 places, 3753 transitions, 128598 flow [2023-08-26 23:51:46,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 235.80769230769232) internal successors, (6131), 26 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:46,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:51:46,719 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:51:46,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-08-26 23:51:46,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:51:46,930 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-26 23:51:46,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:51:46,930 INFO L85 PathProgramCache]: Analyzing trace with hash 11197223, now seen corresponding path program 49 times [2023-08-26 23:51:46,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:51:46,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380571362] [2023-08-26 23:51:46,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:51:46,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:51:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:51:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:51:48,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:51:48,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380571362] [2023-08-26 23:51:48,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380571362] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:51:48,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653824096] [2023-08-26 23:51:48,036 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 23:51:48,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:51:48,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:51:48,041 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) [2023-08-26 23:51:48,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-08-26 23:51:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:51:48,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-26 23:51:48,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:51:48,941 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:51:48,942 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 144 treesize of output 92 [2023-08-26 23:51:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:51:49,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:51:52,029 INFO L322 Elim1Store]: treesize reduction 13, result has 62.9 percent of original size [2023-08-26 23:51:52,029 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 165 treesize of output 95 [2023-08-26 23:51:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:51:52,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653824096] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:51:52,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:51:52,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 32 [2023-08-26 23:51:52,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436090573] [2023-08-26 23:51:52,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:51:52,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-26 23:51:52,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:51:52,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-26 23:51:52,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2023-08-26 23:51:52,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 719 [2023-08-26 23:51:52,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 837 places, 3753 transitions, 128598 flow. Second operand has 33 states, 33 states have (on average 218.72727272727272) internal successors, (7218), 33 states have internal predecessors, (7218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:52,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:51:52,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 719 [2023-08-26 23:51:52,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-26 23:52:09,346 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 23:52:09,346 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 [2023-08-26 23:52:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-26 23:52:09,374 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (38 of 39 remaining) [2023-08-26 23:52:09,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-08-26 23:52:09,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:52:09,582 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). [2023-08-26 23:52:09,584 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2023-08-26 23:52:09,584 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2023-08-26 23:52:09,584 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2023-08-26 23:52:09,584 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2023-08-26 23:52:09,584 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2023-08-26 23:52:09,584 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2023-08-26 23:52:09,584 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2023-08-26 23:52:09,584 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 39 remaining) [2023-08-26 23:52:09,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2023-08-26 23:52:09,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2023-08-26 23:52:09,587 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2023-08-26 23:52:09,587 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2023-08-26 23:52:09,587 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2023-08-26 23:52:09,587 INFO L445 BasicCegarLoop]: Path program histogram: [49, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:52:09,591 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 23:52:09,592 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 23:52:09,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 11:52:09 BasicIcfg [2023-08-26 23:52:09,594 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 23:52:09,594 INFO L158 Benchmark]: Toolchain (without parser) took 743829.42ms. Allocated memory was 417.3MB in the beginning and 8.3GB in the end (delta: 7.9GB). Free memory was 393.1MB in the beginning and 6.1GB in the end (delta: -5.7GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-08-26 23:52:09,594 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 417.3MB. Free memory was 395.6MB in the beginning and 395.4MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 23:52:09,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.58ms. Allocated memory is still 417.3MB. Free memory was 393.1MB in the beginning and 381.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 23:52:09,595 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.52ms. Allocated memory is still 417.3MB. Free memory was 381.1MB in the beginning and 378.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 23:52:09,595 INFO L158 Benchmark]: Boogie Preprocessor took 50.71ms. Allocated memory is still 417.3MB. Free memory was 378.5MB in the beginning and 376.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 23:52:09,595 INFO L158 Benchmark]: RCFGBuilder took 622.36ms. Allocated memory is still 417.3MB. Free memory was 376.8MB in the beginning and 351.7MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-26 23:52:09,596 INFO L158 Benchmark]: TraceAbstraction took 742853.36ms. Allocated memory was 417.3MB in the beginning and 8.3GB in the end (delta: 7.9GB). Free memory was 351.2MB in the beginning and 6.1GB in the end (delta: -5.7GB). Peak memory consumption was 2.2GB. Max. memory is 16.0GB. [2023-08-26 23:52:09,597 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 417.3MB. Free memory was 395.6MB in the beginning and 395.4MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 237.58ms. Allocated memory is still 417.3MB. Free memory was 393.1MB in the beginning and 381.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.52ms. Allocated memory is still 417.3MB. Free memory was 381.1MB in the beginning and 378.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 50.71ms. Allocated memory is still 417.3MB. Free memory was 378.5MB in the beginning and 376.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 622.36ms. Allocated memory is still 417.3MB. Free memory was 376.8MB in the beginning and 351.7MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 742853.36ms. Allocated memory was 417.3MB in the beginning and 8.3GB in the end (delta: 7.9GB). Free memory was 351.2MB in the beginning and 6.1GB in the end (delta: -5.7GB). Peak memory consumption was 2.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.5s, 295 PlacesBefore, 41 PlacesAfterwards, 311 TransitionsBefore, 37 TransitionsAfterwards, 18512 CoEnabledTransitionPairs, 8 FixpointIterations, 115 TrivialSequentialCompositions, 201 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 50 ConcurrentYvCompositions, 20 ChoiceCompositions, 397 TotalNumberOfCompositions, 18141 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17923, independent: 17910, independent conditional: 0, independent unconditional: 17910, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10923, independent: 10917, independent conditional: 0, independent unconditional: 10917, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17923, independent: 6993, independent conditional: 0, independent unconditional: 6993, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 10923, unknown conditional: 0, unknown unconditional: 10923] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (33states, 217/719 universal loopers) in iteration 76,while PetriNetUnfolder was constructing finite prefix that currently has 42106 conditions, 3308 events (1726/3307 cut-off events. For 232517/232517 co-relation queries the response was YES. Maximal size of possible extension queue 1182. Compared 29256 event pairs, 262 based on Foata normal form. 0/4486 useless extension candidates. Maximal degree in co-relation 41893. Up to 1335 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 464 locations, 39 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: 742.7s, OverallIterations: 76, TraceHistogramMax: 4, PathProgramHistogramMax: 49, EmptinessCheckTime: 0.0s, AutomataDifference: 562.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9345 SdHoareTripleChecker+Valid, 26.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9345 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 23.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 158 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1736 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37874 IncrementalHoareTripleChecker+Invalid, 39768 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1736 mSolverCounterUnsat, 0 mSDtfsCounter, 37874 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4187 GetRequests, 1872 SyntacticMatches, 29 SemanticMatches, 2286 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 27169 ImplicationChecksByTransitivity, 200.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128598occurred in iteration=75, InterpolantAutomatonStates: 1310, 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: 1.0s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 140.6s InterpolantComputationTime, 2339 NumberOfCodeBlocks, 2327 NumberOfCodeBlocksAsserted, 193 NumberOfCheckSat, 3160 ConstructedInterpolants, 9 QuantifiedInterpolants, 74035 SizeOfPredicates, 1551 NumberOfNonLiveVariables, 12624 ConjunctsInSsa, 2072 ConjunctsInUnsatCore, 184 InterpolantComputations, 24 PerfectInterpolantSequences, 1145/1712 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