/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-nzb-file-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 23:50:47,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 23:50:47,670 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 23:50:47,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 23:50:47,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 23:50:47,705 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 23:50:47,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 23:50:47,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 23:50:47,707 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 23:50:47,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 23:50:47,710 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 23:50:47,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 23:50:47,711 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 23:50:47,711 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 23:50:47,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 23:50:47,712 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 23:50:47,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 23:50:47,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 23:50:47,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 23:50:47,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 23:50:47,713 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 23:50:47,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 23:50:47,714 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 23:50:47,714 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 23:50:47,714 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 23:50:47,715 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 23:50:47,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 23:50:47,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:50:47,715 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 23:50:47,715 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 23:50:47,716 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 23:50:47,716 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 23:50:47,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 23:50:47,717 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 23:50:47,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 23:50:47,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 23:50:48,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 23:50:48,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 23:50:48,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 23:50:48,037 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 23:50:48,039 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 23:50:48,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2023-08-26 23:50:49,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 23:50:49,329 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 23:50:49,330 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2023-08-26 23:50:49,337 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dd932190/0ab0e6fa1a224899997aae6f208bb141/FLAGc3eccdc96 [2023-08-26 23:50:49,350 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dd932190/0ab0e6fa1a224899997aae6f208bb141 [2023-08-26 23:50:49,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 23:50:49,356 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 23:50:49,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 23:50:49,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 23:50:49,361 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 23:50:49,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@276f4cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49, skipping insertion in model container [2023-08-26 23:50:49,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,399 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 23:50:49,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:50:49,560 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 23:50:49,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:50:49,616 INFO L206 MainTranslator]: Completed translation [2023-08-26 23:50:49,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49 WrapperNode [2023-08-26 23:50:49,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 23:50:49,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 23:50:49,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 23:50:49,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 23:50:49,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,683 INFO L138 Inliner]: procedures = 26, calls = 77, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 738 [2023-08-26 23:50:49,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 23:50:49,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 23:50:49,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 23:50:49,685 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 23:50:49,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,721 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 23:50:49,735 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 23:50:49,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 23:50:49,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 23:50:49,736 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (1/1) ... [2023-08-26 23:50:49,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:50:49,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:50:49,782 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 23:50:49,813 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 23:50:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 23:50:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 23:50:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 23:50:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 23:50:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 23:50:49,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 23:50:49,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 23:50:49,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 23:50:49,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 23:50:49,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 23:50:49,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 23:50:49,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 23:50:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 23:50:49,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 23:50:49,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 23:50:49,833 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 23:50:49,972 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 23:50:49,975 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 23:50:50,652 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 23:50:50,663 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 23:50:50,663 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-26 23:50:50,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:50:50 BoogieIcfgContainer [2023-08-26 23:50:50,666 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 23:50:50,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 23:50:50,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 23:50:50,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 23:50:50,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:50:49" (1/3) ... [2023-08-26 23:50:50,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d87c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:50:50, skipping insertion in model container [2023-08-26 23:50:50,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:50:49" (2/3) ... [2023-08-26 23:50:50,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d87c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:50:50, skipping insertion in model container [2023-08-26 23:50:50,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:50:50" (3/3) ... [2023-08-26 23:50:50,672 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2023-08-26 23:50:50,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 23:50:50,687 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2023-08-26 23:50:50,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 23:50:50,921 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 23:50:50,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 850 places, 931 transitions, 1886 flow [2023-08-26 23:50:51,440 INFO L124 PetriNetUnfolderBase]: 91/928 cut-off events. [2023-08-26 23:50:51,440 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:50:51,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 928 events. 91/928 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3783 event pairs, 0 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 685. Up to 2 conditions per place. [2023-08-26 23:50:51,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 850 places, 931 transitions, 1886 flow [2023-08-26 23:50:51,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 836 places, 917 transitions, 1852 flow [2023-08-26 23:50:51,503 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 23:50:51,519 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 836 places, 917 transitions, 1852 flow [2023-08-26 23:50:51,522 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 836 places, 917 transitions, 1852 flow [2023-08-26 23:50:51,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 836 places, 917 transitions, 1852 flow [2023-08-26 23:50:51,850 INFO L124 PetriNetUnfolderBase]: 91/917 cut-off events. [2023-08-26 23:50:51,850 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:50:51,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 917 events. 91/917 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3778 event pairs, 0 based on Foata normal form. 0/766 useless extension candidates. Maximal degree in co-relation 685. Up to 2 conditions per place. [2023-08-26 23:50:51,958 INFO L119 LiptonReduction]: Number of co-enabled transitions 311688 [2023-08-26 23:51:42,742 INFO L134 LiptonReduction]: Checked pairs total: 311393 [2023-08-26 23:51:42,743 INFO L136 LiptonReduction]: Total number of compositions: 1245 [2023-08-26 23:51:42,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 23:51:42,761 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;@44231ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 23:51:42,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2023-08-26 23:51:42,764 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 23:51:42,764 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 23:51:42,764 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:51:42,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:51:42,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 23:51:42,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:51:42,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:51:42,769 INFO L85 PathProgramCache]: Analyzing trace with hash 132701, now seen corresponding path program 1 times [2023-08-26 23:51:42,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:51:42,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616048875] [2023-08-26 23:51:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:51:42,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:51:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:51:43,065 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 23:51:43,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:51:43,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616048875] [2023-08-26 23:51:43,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616048875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:51:43,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:51:43,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:51:43,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083305491] [2023-08-26 23:51:43,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:51:43,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:51:43,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:51:43,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:51:43,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:51:43,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 863 out of 2176 [2023-08-26 23:51:43,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 863.6666666666666) internal successors, (2591), 3 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:43,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:51:43,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 863 of 2176 [2023-08-26 23:51:43,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:51:51,818 INFO L124 PetriNetUnfolderBase]: 51579/70344 cut-off events. [2023-08-26 23:51:51,818 INFO L125 PetriNetUnfolderBase]: For 1537/1537 co-relation queries the response was YES. [2023-08-26 23:51:51,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142296 conditions, 70344 events. 51579/70344 cut-off events. For 1537/1537 co-relation queries the response was YES. Maximal size of possible extension queue 2162. Compared 419817 event pairs, 43073 based on Foata normal form. 0/27082 useless extension candidates. Maximal degree in co-relation 137482. Up to 70340 conditions per place. [2023-08-26 23:51:52,198 INFO L140 encePairwiseOnDemand]: 2148/2176 looper letters, 94 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2023-08-26 23:51:52,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 101 transitions, 422 flow [2023-08-26 23:51:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:51:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:51:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2711 transitions. [2023-08-26 23:51:52,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152879901960784 [2023-08-26 23:51:52,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2711 transitions. [2023-08-26 23:51:52,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2711 transitions. [2023-08-26 23:51:52,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:51:52,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2711 transitions. [2023-08-26 23:51:52,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 903.6666666666666) internal successors, (2711), 3 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:52,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:52,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:52,263 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 238 flow. Second operand 3 states and 2711 transitions. [2023-08-26 23:51:52,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 101 transitions, 422 flow [2023-08-26 23:51:52,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 101 transitions, 410 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 23:51:52,315 INFO L231 Difference]: Finished difference. Result has 90 places, 101 transitions, 260 flow [2023-08-26 23:51:52,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=90, PETRI_TRANSITIONS=101} [2023-08-26 23:51:52,320 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -17 predicate places. [2023-08-26 23:51:52,321 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 101 transitions, 260 flow [2023-08-26 23:51:52,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 863.6666666666666) internal successors, (2591), 3 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:52,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:51:52,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:51:52,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 23:51:52,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:51:52,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:51:52,332 INFO L85 PathProgramCache]: Analyzing trace with hash 4120093, now seen corresponding path program 1 times [2023-08-26 23:51:52,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:51:52,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894551338] [2023-08-26 23:51:52,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:51:52,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:51:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:51:52,440 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 23:51:52,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:51:52,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894551338] [2023-08-26 23:51:52,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894551338] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:51:52,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813537842] [2023-08-26 23:51:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:51:52,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:51:52,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:51:52,444 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 23:51:52,517 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 23:51:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:51:52,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:51:52,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:51:52,692 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 23:51:52,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:51:52,706 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 23:51:52,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813537842] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:51:52,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:51:52,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-26 23:51:52,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453569827] [2023-08-26 23:51:52,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:51:52,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:51:52,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:51:52,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:51:52,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:51:52,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 863 out of 2176 [2023-08-26 23:51:52,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 101 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 864.1428571428571) internal successors, (6049), 7 states have internal predecessors, (6049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:51:52,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:51:52,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 863 of 2176 [2023-08-26 23:51:52,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:52:00,447 INFO L124 PetriNetUnfolderBase]: 51597/70371 cut-off events. [2023-08-26 23:52:00,447 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2023-08-26 23:52:00,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141431 conditions, 70371 events. 51597/70371 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 2162. Compared 419370 event pairs, 43073 based on Foata normal form. 0/27101 useless extension candidates. Maximal degree in co-relation 141276. Up to 70340 conditions per place. [2023-08-26 23:52:00,864 INFO L140 encePairwiseOnDemand]: 2163/2176 looper letters, 91 selfloop transitions, 37 changer transitions 0/128 dead transitions. [2023-08-26 23:52:00,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 636 flow [2023-08-26 23:52:00,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:52:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:52:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6178 transitions. [2023-08-26 23:52:00,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405593487394958 [2023-08-26 23:52:00,881 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6178 transitions. [2023-08-26 23:52:00,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6178 transitions. [2023-08-26 23:52:00,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:52:00,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6178 transitions. [2023-08-26 23:52:00,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 882.5714285714286) internal successors, (6178), 7 states have internal predecessors, (6178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:00,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 2176.0) internal successors, (17408), 8 states have internal predecessors, (17408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:00,935 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 2176.0) internal successors, (17408), 8 states have internal predecessors, (17408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:00,937 INFO L175 Difference]: Start difference. First operand has 90 places, 101 transitions, 260 flow. Second operand 7 states and 6178 transitions. [2023-08-26 23:52:00,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 636 flow [2023-08-26 23:52:00,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 128 transitions, 610 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:52:00,947 INFO L231 Difference]: Finished difference. Result has 97 places, 128 transitions, 490 flow [2023-08-26 23:52:00,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=490, PETRI_PLACES=97, PETRI_TRANSITIONS=128} [2023-08-26 23:52:00,948 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -10 predicate places. [2023-08-26 23:52:00,948 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 128 transitions, 490 flow [2023-08-26 23:52:00,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 864.1428571428571) internal successors, (6049), 7 states have internal predecessors, (6049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:00,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:52:00,951 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-26 23:52:00,962 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 23:52:01,162 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 23:52:01,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:52:01,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:52:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash 127726717, now seen corresponding path program 1 times [2023-08-26 23:52:01,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:52:01,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348748556] [2023-08-26 23:52:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:01,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:52:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:52:01,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:52:01,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348748556] [2023-08-26 23:52:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348748556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:52:01,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:52:01,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:52:01,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170694429] [2023-08-26 23:52:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:52:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:52:01,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:52:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:52:01,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 863 out of 2176 [2023-08-26 23:52:01,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 128 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 864.3333333333334) internal successors, (2593), 3 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:01,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:01,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 863 of 2176 [2023-08-26 23:52:01,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:52:08,345 INFO L124 PetriNetUnfolderBase]: 51588/70359 cut-off events. [2023-08-26 23:52:08,345 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2023-08-26 23:52:08,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141441 conditions, 70359 events. 51588/70359 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 2192. Compared 421041 event pairs, 43073 based on Foata normal form. 0/27103 useless extension candidates. Maximal degree in co-relation 141347. Up to 70331 conditions per place. [2023-08-26 23:52:08,690 INFO L140 encePairwiseOnDemand]: 2171/2176 looper letters, 110 selfloop transitions, 6 changer transitions 0/116 dead transitions. [2023-08-26 23:52:08,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 641 flow [2023-08-26 23:52:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:52:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:52:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2684 transitions. [2023-08-26 23:52:08,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111519607843137 [2023-08-26 23:52:08,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2684 transitions. [2023-08-26 23:52:08,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2684 transitions. [2023-08-26 23:52:08,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:52:08,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2684 transitions. [2023-08-26 23:52:08,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 894.6666666666666) internal successors, (2684), 3 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:08,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:08,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:08,729 INFO L175 Difference]: Start difference. First operand has 97 places, 128 transitions, 490 flow. Second operand 3 states and 2684 transitions. [2023-08-26 23:52:08,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 641 flow [2023-08-26 23:52:08,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 116 transitions, 604 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-26 23:52:08,734 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 384 flow [2023-08-26 23:52:08,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2023-08-26 23:52:08,735 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -13 predicate places. [2023-08-26 23:52:08,736 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 384 flow [2023-08-26 23:52:08,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 864.3333333333334) internal successors, (2593), 3 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:08,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:52:08,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 23:52:08,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 23:52:08,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:52:08,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:52:08,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1600780398, now seen corresponding path program 1 times [2023-08-26 23:52:08,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:52:08,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109841216] [2023-08-26 23:52:08,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:08,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:52:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:08,831 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 23:52:08,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:52:08,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109841216] [2023-08-26 23:52:08,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109841216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:52:08,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:52:08,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:52:08,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305816590] [2023-08-26 23:52:08,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:52:08,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:52:08,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:08,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:52:08,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:52:08,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 854 out of 2176 [2023-08-26 23:52:08,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 856.0) internal successors, (2568), 3 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:08,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:08,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 854 of 2176 [2023-08-26 23:52:08,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:52:16,276 INFO L124 PetriNetUnfolderBase]: 51585/70356 cut-off events. [2023-08-26 23:52:16,277 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-08-26 23:52:16,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141416 conditions, 70356 events. 51585/70356 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 2178. Compared 420397 event pairs, 43073 based on Foata normal form. 3/27107 useless extension candidates. Maximal degree in co-relation 141330. Up to 70348 conditions per place. [2023-08-26 23:52:16,614 INFO L140 encePairwiseOnDemand]: 2169/2176 looper letters, 101 selfloop transitions, 12 changer transitions 0/113 dead transitions. [2023-08-26 23:52:16,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 113 transitions, 595 flow [2023-08-26 23:52:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:52:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:52:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2660 transitions. [2023-08-26 23:52:16,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074754901960784 [2023-08-26 23:52:16,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2660 transitions. [2023-08-26 23:52:16,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2660 transitions. [2023-08-26 23:52:16,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:52:16,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2660 transitions. [2023-08-26 23:52:16,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 886.6666666666666) internal successors, (2660), 3 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:16,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:16,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:16,636 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 384 flow. Second operand 3 states and 2660 transitions. [2023-08-26 23:52:16,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 113 transitions, 595 flow [2023-08-26 23:52:16,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 113 transitions, 585 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:52:16,639 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 383 flow [2023-08-26 23:52:16,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=94, PETRI_TRANSITIONS=113} [2023-08-26 23:52:16,640 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -13 predicate places. [2023-08-26 23:52:16,640 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 383 flow [2023-08-26 23:52:16,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 856.0) internal successors, (2568), 3 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:16,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:52:16,641 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-26 23:52:16,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 23:52:16,641 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:52:16,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:52:16,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1808475412, now seen corresponding path program 2 times [2023-08-26 23:52:16,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:52:16,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919046269] [2023-08-26 23:52:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:16,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:52:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:16,722 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 23:52:16,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:52:16,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919046269] [2023-08-26 23:52:16,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919046269] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:52:16,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561978189] [2023-08-26 23:52:16,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:52:16,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:52:16,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:52:16,729 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 23:52:16,732 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 23:52:16,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:52:16,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:52:16,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:52:16,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:52:16,899 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 23:52:16,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:52:16,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561978189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:52:16,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:52:16,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-26 23:52:16,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938487839] [2023-08-26 23:52:16,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:52:16,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:52:16,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:16,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:52:16,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:52:16,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 869 out of 2176 [2023-08-26 23:52:16,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 113 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 870.0) internal successors, (2610), 3 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:16,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:16,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 869 of 2176 [2023-08-26 23:52:16,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:52:24,328 INFO L124 PetriNetUnfolderBase]: 51585/70353 cut-off events. [2023-08-26 23:52:24,328 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2023-08-26 23:52:24,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141405 conditions, 70353 events. 51585/70353 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 2165. Compared 418683 event pairs, 43073 based on Foata normal form. 3/27104 useless extension candidates. Maximal degree in co-relation 141335. Up to 70353 conditions per place. [2023-08-26 23:52:24,619 INFO L140 encePairwiseOnDemand]: 2172/2176 looper letters, 109 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-08-26 23:52:24,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 573 flow [2023-08-26 23:52:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:52:24,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:52:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2699 transitions. [2023-08-26 23:52:24,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134497549019608 [2023-08-26 23:52:24,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2699 transitions. [2023-08-26 23:52:24,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2699 transitions. [2023-08-26 23:52:24,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:52:24,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2699 transitions. [2023-08-26 23:52:24,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 899.6666666666666) internal successors, (2699), 3 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:24,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:24,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:24,641 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 383 flow. Second operand 3 states and 2699 transitions. [2023-08-26 23:52:24,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 573 flow [2023-08-26 23:52:24,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 502 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-26 23:52:24,644 INFO L231 Difference]: Finished difference. Result has 87 places, 110 transitions, 284 flow [2023-08-26 23:52:24,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=87, PETRI_TRANSITIONS=110} [2023-08-26 23:52:24,645 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-26 23:52:24,645 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 110 transitions, 284 flow [2023-08-26 23:52:24,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 870.0) internal successors, (2610), 3 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:24,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:52:24,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:52:24,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 23:52:24,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:52:24,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:52:24,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:52:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash -160107372, now seen corresponding path program 1 times [2023-08-26 23:52:24,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:52:24,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734009] [2023-08-26 23:52:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:52:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:52:24,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:52:24,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734009] [2023-08-26 23:52:24,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734009] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:52:24,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150722433] [2023-08-26 23:52:24,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:24,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:52:24,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:52:24,955 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 23:52:24,957 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 23:52:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:25,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:52:25,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:52:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:52:25,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:52:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:52:25,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150722433] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:52:25,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:52:25,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-26 23:52:25,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891202368] [2023-08-26 23:52:25,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:52:25,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 23:52:25,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:25,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 23:52:25,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:52:25,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 854 out of 2176 [2023-08-26 23:52:25,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 110 transitions, 284 flow. Second operand has 8 states, 8 states have (on average 855.875) internal successors, (6847), 8 states have internal predecessors, (6847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:25,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:25,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 854 of 2176 [2023-08-26 23:52:25,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:52:32,165 INFO L124 PetriNetUnfolderBase]: 51576/70344 cut-off events. [2023-08-26 23:52:32,165 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2023-08-26 23:52:32,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141338 conditions, 70344 events. 51576/70344 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 2181. Compared 420531 event pairs, 43073 based on Foata normal form. 0/27091 useless extension candidates. Maximal degree in co-relation 141330. Up to 70333 conditions per place. [2023-08-26 23:52:32,421 INFO L140 encePairwiseOnDemand]: 2169/2176 looper letters, 86 selfloop transitions, 15 changer transitions 0/101 dead transitions. [2023-08-26 23:52:32,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 450 flow [2023-08-26 23:52:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:52:32,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:52:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5234 transitions. [2023-08-26 23:52:32,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40088848039215685 [2023-08-26 23:52:32,431 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5234 transitions. [2023-08-26 23:52:32,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5234 transitions. [2023-08-26 23:52:32,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:52:32,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5234 transitions. [2023-08-26 23:52:32,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 872.3333333333334) internal successors, (5234), 6 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:32,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 2176.0) internal successors, (15232), 7 states have internal predecessors, (15232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:32,461 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 2176.0) internal successors, (15232), 7 states have internal predecessors, (15232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:32,461 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 284 flow. Second operand 6 states and 5234 transitions. [2023-08-26 23:52:32,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 450 flow [2023-08-26 23:52:32,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:52:32,464 INFO L231 Difference]: Finished difference. Result has 91 places, 101 transitions, 277 flow [2023-08-26 23:52:32,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=91, PETRI_TRANSITIONS=101} [2023-08-26 23:52:32,465 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -16 predicate places. [2023-08-26 23:52:32,465 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 277 flow [2023-08-26 23:52:32,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 855.875) internal successors, (6847), 8 states have internal predecessors, (6847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:32,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:52:32,466 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-26 23:52:32,475 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 23:52:32,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:52:32,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:52:32,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:52:32,673 INFO L85 PathProgramCache]: Analyzing trace with hash 225119058, now seen corresponding path program 1 times [2023-08-26 23:52:32,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:52:32,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728271269] [2023-08-26 23:52:32,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:32,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:52:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-26 23:52:32,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:52:32,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728271269] [2023-08-26 23:52:32,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728271269] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:52:32,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711223317] [2023-08-26 23:52:32,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:32,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:52:32,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:52:32,825 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 23:52:32,827 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 23:52:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:33,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 23:52:33,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:52:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-26 23:52:33,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:52:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-26 23:52:33,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711223317] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:52:33,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:52:33,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 23:52:33,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222966837] [2023-08-26 23:52:33,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:52:33,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 23:52:33,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:33,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 23:52:33,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-08-26 23:52:33,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 854 out of 2176 [2023-08-26 23:52:33,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 101 transitions, 277 flow. Second operand has 13 states, 13 states have (on average 855.5384615384615) internal successors, (11122), 13 states have internal predecessors, (11122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:33,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:33,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 854 of 2176 [2023-08-26 23:52:33,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:52:40,240 INFO L124 PetriNetUnfolderBase]: 51576/70347 cut-off events. [2023-08-26 23:52:40,241 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2023-08-26 23:52:40,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141362 conditions, 70347 events. 51576/70347 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 2175. Compared 422472 event pairs, 43073 based on Foata normal form. 2/27098 useless extension candidates. Maximal degree in co-relation 141353. Up to 70333 conditions per place. [2023-08-26 23:52:40,522 INFO L140 encePairwiseOnDemand]: 2169/2176 looper letters, 86 selfloop transitions, 18 changer transitions 0/104 dead transitions. [2023-08-26 23:52:40,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 497 flow [2023-08-26 23:52:40,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:52:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:52:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6085 transitions. [2023-08-26 23:52:40,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994879201680672 [2023-08-26 23:52:40,532 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6085 transitions. [2023-08-26 23:52:40,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6085 transitions. [2023-08-26 23:52:40,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:52:40,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6085 transitions. [2023-08-26 23:52:40,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 869.2857142857143) internal successors, (6085), 7 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:40,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 2176.0) internal successors, (17408), 8 states have internal predecessors, (17408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:40,562 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 2176.0) internal successors, (17408), 8 states have internal predecessors, (17408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:40,562 INFO L175 Difference]: Start difference. First operand has 91 places, 101 transitions, 277 flow. Second operand 7 states and 6085 transitions. [2023-08-26 23:52:40,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 497 flow [2023-08-26 23:52:40,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 104 transitions, 467 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 23:52:40,565 INFO L231 Difference]: Finished difference. Result has 93 places, 104 transitions, 309 flow [2023-08-26 23:52:40,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=93, PETRI_TRANSITIONS=104} [2023-08-26 23:52:40,566 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -14 predicate places. [2023-08-26 23:52:40,566 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 104 transitions, 309 flow [2023-08-26 23:52:40,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 855.5384615384615) internal successors, (11122), 13 states have internal predecessors, (11122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:40,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:52:40,569 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-26 23:52:40,581 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 23:52:40,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:52:40,774 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:52:40,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:52:40,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953325, now seen corresponding path program 2 times [2023-08-26 23:52:40,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:52:40,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890440296] [2023-08-26 23:52:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:40,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:52:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:52:40,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:52:40,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890440296] [2023-08-26 23:52:40,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890440296] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:52:40,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:52:40,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:52:40,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569687434] [2023-08-26 23:52:40,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:52:40,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:52:40,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:40,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:52:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:52:40,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:52:40,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 104 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:40,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:40,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:52:40,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:52:47,413 INFO L124 PetriNetUnfolderBase]: 46388/63235 cut-off events. [2023-08-26 23:52:47,414 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2023-08-26 23:52:47,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127124 conditions, 63235 events. 46388/63235 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 1973. Compared 374324 event pairs, 38493 based on Foata normal form. 0/24788 useless extension candidates. Maximal degree in co-relation 127114. Up to 63235 conditions per place. [2023-08-26 23:52:47,647 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 101 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-08-26 23:52:47,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 102 transitions, 509 flow [2023-08-26 23:52:47,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:52:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:52:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2738 transitions. [2023-08-26 23:52:47,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41942401960784315 [2023-08-26 23:52:47,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2738 transitions. [2023-08-26 23:52:47,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2738 transitions. [2023-08-26 23:52:47,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:52:47,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2738 transitions. [2023-08-26 23:52:47,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 912.6666666666666) internal successors, (2738), 3 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:47,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:47,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:47,665 INFO L175 Difference]: Start difference. First operand has 93 places, 104 transitions, 309 flow. Second operand 3 states and 2738 transitions. [2023-08-26 23:52:47,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 102 transitions, 509 flow [2023-08-26 23:52:47,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 102 transitions, 479 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-26 23:52:47,667 INFO L231 Difference]: Finished difference. Result has 89 places, 102 transitions, 277 flow [2023-08-26 23:52:47,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=89, PETRI_TRANSITIONS=102} [2023-08-26 23:52:47,670 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -18 predicate places. [2023-08-26 23:52:47,670 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 102 transitions, 277 flow [2023-08-26 23:52:47,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:47,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:52:47,671 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-26 23:52:47,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 23:52:47,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:52:47,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:52:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953324, now seen corresponding path program 2 times [2023-08-26 23:52:47,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:52:47,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657286802] [2023-08-26 23:52:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:47,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:52:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:52:47,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:52:47,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657286802] [2023-08-26 23:52:47,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657286802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:52:47,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:52:47,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:52:47,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290385142] [2023-08-26 23:52:47,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:52:47,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:52:47,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:52:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:52:47,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:52:47,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 102 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:47,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:47,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:52:47,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:52:53,714 INFO L124 PetriNetUnfolderBase]: 42827/58330 cut-off events. [2023-08-26 23:52:53,714 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-08-26 23:52:53,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117253 conditions, 58330 events. 42827/58330 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 1840. Compared 339587 event pairs, 35348 based on Foata normal form. 0/23331 useless extension candidates. Maximal degree in co-relation 117242. Up to 58330 conditions per place. [2023-08-26 23:52:53,945 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 99 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2023-08-26 23:52:53,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 100 transitions, 473 flow [2023-08-26 23:52:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:52:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:52:53,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2736 transitions. [2023-08-26 23:52:53,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911764705882354 [2023-08-26 23:52:53,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2736 transitions. [2023-08-26 23:52:53,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2736 transitions. [2023-08-26 23:52:53,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:52:53,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2736 transitions. [2023-08-26 23:52:53,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 912.0) internal successors, (2736), 3 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:53,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:53,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:53,958 INFO L175 Difference]: Start difference. First operand has 89 places, 102 transitions, 277 flow. Second operand 3 states and 2736 transitions. [2023-08-26 23:52:53,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 100 transitions, 473 flow [2023-08-26 23:52:53,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:52:53,961 INFO L231 Difference]: Finished difference. Result has 88 places, 100 transitions, 274 flow [2023-08-26 23:52:53,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=88, PETRI_TRANSITIONS=100} [2023-08-26 23:52:53,961 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -19 predicate places. [2023-08-26 23:52:53,962 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 100 transitions, 274 flow [2023-08-26 23:52:53,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:53,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:52:53,962 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-26 23:52:53,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 23:52:53,962 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:52:53,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:52:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953405, now seen corresponding path program 1 times [2023-08-26 23:52:53,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:52:53,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47656526] [2023-08-26 23:52:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:53,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:52:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:52:54,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:52:54,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47656526] [2023-08-26 23:52:54,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47656526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:52:54,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:52:54,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:52:54,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651824176] [2023-08-26 23:52:54,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:52:54,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:52:54,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:54,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:52:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:52:54,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:52:54,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 100 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:54,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:54,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:52:54,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:52:59,498 INFO L124 PetriNetUnfolderBase]: 39408/53623 cut-off events. [2023-08-26 23:52:59,498 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-26 23:52:59,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107794 conditions, 53623 events. 39408/53623 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 1711. Compared 308654 event pairs, 32337 based on Foata normal form. 0/21912 useless extension candidates. Maximal degree in co-relation 107782. Up to 53623 conditions per place. [2023-08-26 23:52:59,718 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 97 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-08-26 23:52:59,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 98 transitions, 466 flow [2023-08-26 23:52:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:52:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:52:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2734 transitions. [2023-08-26 23:52:59,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41881127450980393 [2023-08-26 23:52:59,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2734 transitions. [2023-08-26 23:52:59,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2734 transitions. [2023-08-26 23:52:59,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:52:59,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2734 transitions. [2023-08-26 23:52:59,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 911.3333333333334) internal successors, (2734), 3 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:59,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:59,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:59,730 INFO L175 Difference]: Start difference. First operand has 88 places, 100 transitions, 274 flow. Second operand 3 states and 2734 transitions. [2023-08-26 23:52:59,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 98 transitions, 466 flow [2023-08-26 23:52:59,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 98 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:52:59,732 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 271 flow [2023-08-26 23:52:59,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=87, PETRI_TRANSITIONS=98} [2023-08-26 23:52:59,733 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-26 23:52:59,733 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 271 flow [2023-08-26 23:52:59,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:59,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:52:59,734 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-26 23:52:59,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 23:52:59,734 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:52:59,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:52:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953327, now seen corresponding path program 1 times [2023-08-26 23:52:59,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:52:59,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853815097] [2023-08-26 23:52:59,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:52:59,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:52:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:52:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:52:59,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:52:59,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853815097] [2023-08-26 23:52:59,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853815097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:52:59,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:52:59,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:52:59,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215105014] [2023-08-26 23:52:59,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:52:59,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:52:59,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:52:59,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:52:59,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:52:59,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:52:59,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:52:59,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:52:59,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:52:59,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:53:04,727 INFO L124 PetriNetUnfolderBase]: 35096/47723 cut-off events. [2023-08-26 23:53:04,727 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2023-08-26 23:53:04,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95972 conditions, 47723 events. 35096/47723 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 268952 event pairs, 28577 based on Foata normal form. 0/19896 useless extension candidates. Maximal degree in co-relation 95959. Up to 47723 conditions per place. [2023-08-26 23:53:04,931 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 95 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2023-08-26 23:53:04,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 459 flow [2023-08-26 23:53:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:53:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:53:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2732 transitions. [2023-08-26 23:53:04,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185049019607843 [2023-08-26 23:53:04,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2732 transitions. [2023-08-26 23:53:04,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2732 transitions. [2023-08-26 23:53:04,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:53:04,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2732 transitions. [2023-08-26 23:53:04,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 910.6666666666666) internal successors, (2732), 3 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:04,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:04,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:04,943 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 271 flow. Second operand 3 states and 2732 transitions. [2023-08-26 23:53:04,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 459 flow [2023-08-26 23:53:04,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 96 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:53:04,945 INFO L231 Difference]: Finished difference. Result has 86 places, 96 transitions, 268 flow [2023-08-26 23:53:04,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=86, PETRI_TRANSITIONS=96} [2023-08-26 23:53:04,946 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -21 predicate places. [2023-08-26 23:53:04,946 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 96 transitions, 268 flow [2023-08-26 23:53:04,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:04,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:53:04,946 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:53:04,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 23:53:04,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:53:04,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:53:04,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1795915633, now seen corresponding path program 1 times [2023-08-26 23:53:04,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:53:04,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935305521] [2023-08-26 23:53:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:53:04,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:53:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:53:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:53:05,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:53:05,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935305521] [2023-08-26 23:53:05,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935305521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:53:05,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:53:05,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:53:05,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227969543] [2023-08-26 23:53:05,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:53:05,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:53:05,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:53:05,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:53:05,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:53:05,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:53:05,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 96 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 886.3333333333334) internal successors, (2659), 3 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:05,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:53:05,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:53:05,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:53:09,474 INFO L124 PetriNetUnfolderBase]: 31016/42143 cut-off events. [2023-08-26 23:53:09,474 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2023-08-26 23:53:09,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84790 conditions, 42143 events. 31016/42143 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 232659 event pairs, 25033 based on Foata normal form. 0/17960 useless extension candidates. Maximal degree in co-relation 84776. Up to 42143 conditions per place. [2023-08-26 23:53:09,705 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 93 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-26 23:53:09,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 452 flow [2023-08-26 23:53:09,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:53:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:53:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2730 transitions. [2023-08-26 23:53:09,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181985294117647 [2023-08-26 23:53:09,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2730 transitions. [2023-08-26 23:53:09,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2730 transitions. [2023-08-26 23:53:09,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:53:09,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2730 transitions. [2023-08-26 23:53:09,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 910.0) internal successors, (2730), 3 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:09,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:09,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:09,718 INFO L175 Difference]: Start difference. First operand has 86 places, 96 transitions, 268 flow. Second operand 3 states and 2730 transitions. [2023-08-26 23:53:09,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 452 flow [2023-08-26 23:53:09,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 94 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:53:09,720 INFO L231 Difference]: Finished difference. Result has 85 places, 94 transitions, 265 flow [2023-08-26 23:53:09,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=85, PETRI_TRANSITIONS=94} [2023-08-26 23:53:09,721 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -22 predicate places. [2023-08-26 23:53:09,721 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 94 transitions, 265 flow [2023-08-26 23:53:09,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.3333333333334) internal successors, (2659), 3 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:09,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:53:09,722 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:53:09,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 23:53:09,722 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:53:09,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:53:09,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1795915635, now seen corresponding path program 1 times [2023-08-26 23:53:09,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:53:09,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935407666] [2023-08-26 23:53:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:53:09,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:53:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:53:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:53:09,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:53:09,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935407666] [2023-08-26 23:53:09,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935407666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:53:09,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:53:09,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:53:09,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376689339] [2023-08-26 23:53:09,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:53:09,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:53:09,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:53:09,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:53:09,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:53:09,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-26 23:53:09,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 94 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 865.3333333333334) internal successors, (2596), 3 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:09,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:53:09,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-26 23:53:09,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:53:16,676 INFO L124 PetriNetUnfolderBase]: 47338/64273 cut-off events. [2023-08-26 23:53:16,677 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2023-08-26 23:53:16,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129281 conditions, 64273 events. 47338/64273 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 1221. Compared 368362 event pairs, 25033 based on Foata normal form. 0/29448 useless extension candidates. Maximal degree in co-relation 129266. Up to 42144 conditions per place. [2023-08-26 23:53:17,210 INFO L140 encePairwiseOnDemand]: 2165/2176 looper letters, 152 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-08-26 23:53:17,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 154 transitions, 698 flow [2023-08-26 23:53:17,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:53:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:53:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2734 transitions. [2023-08-26 23:53:17,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41881127450980393 [2023-08-26 23:53:17,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2734 transitions. [2023-08-26 23:53:17,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2734 transitions. [2023-08-26 23:53:17,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:53:17,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2734 transitions. [2023-08-26 23:53:17,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 911.3333333333334) internal successors, (2734), 3 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:17,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:17,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:17,223 INFO L175 Difference]: Start difference. First operand has 85 places, 94 transitions, 265 flow. Second operand 3 states and 2734 transitions. [2023-08-26 23:53:17,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 154 transitions, 698 flow [2023-08-26 23:53:17,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 154 transitions, 697 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:53:17,226 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 292 flow [2023-08-26 23:53:17,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=87, PETRI_TRANSITIONS=95} [2023-08-26 23:53:17,228 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-26 23:53:17,228 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 292 flow [2023-08-26 23:53:17,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 865.3333333333334) internal successors, (2596), 3 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:17,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:53:17,229 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:53:17,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 23:53:17,229 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:53:17,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:53:17,229 INFO L85 PathProgramCache]: Analyzing trace with hash 161056403, now seen corresponding path program 1 times [2023-08-26 23:53:17,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:53:17,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698433090] [2023-08-26 23:53:17,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:53:17,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:53:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:53:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:53:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:53:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698433090] [2023-08-26 23:53:17,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698433090] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:53:17,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:53:17,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:53:17,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843703509] [2023-08-26 23:53:17,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:53:17,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:53:17,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:53:17,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:53:17,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:53:17,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:53:17,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 886.6666666666666) internal successors, (2660), 3 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:17,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:53:17,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:53:17,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:53:23,533 INFO L124 PetriNetUnfolderBase]: 41572/56395 cut-off events. [2023-08-26 23:53:23,533 INFO L125 PetriNetUnfolderBase]: For 2692/2692 co-relation queries the response was YES. [2023-08-26 23:53:23,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119528 conditions, 56395 events. 41572/56395 cut-off events. For 2692/2692 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 313966 event pairs, 33289 based on Foata normal form. 0/28194 useless extension candidates. Maximal degree in co-relation 119512. Up to 56395 conditions per place. [2023-08-26 23:53:23,812 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 92 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-08-26 23:53:23,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 474 flow [2023-08-26 23:53:23,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:53:23,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:53:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2728 transitions. [2023-08-26 23:53:23,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4178921568627451 [2023-08-26 23:53:23,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2728 transitions. [2023-08-26 23:53:23,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2728 transitions. [2023-08-26 23:53:23,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:53:23,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2728 transitions. [2023-08-26 23:53:23,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 909.3333333333334) internal successors, (2728), 3 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:23,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:23,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:23,826 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 292 flow. Second operand 3 states and 2728 transitions. [2023-08-26 23:53:23,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 474 flow [2023-08-26 23:53:23,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:53:23,838 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 288 flow [2023-08-26 23:53:23,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=86, PETRI_TRANSITIONS=93} [2023-08-26 23:53:23,839 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -21 predicate places. [2023-08-26 23:53:23,839 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 288 flow [2023-08-26 23:53:23,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.6666666666666) internal successors, (2660), 3 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:23,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:53:23,840 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:53:23,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 23:53:23,840 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:53:23,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:53:23,840 INFO L85 PathProgramCache]: Analyzing trace with hash 161056319, now seen corresponding path program 1 times [2023-08-26 23:53:23,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:53:23,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374446802] [2023-08-26 23:53:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:53:23,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:53:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:53:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:53:23,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:53:23,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374446802] [2023-08-26 23:53:23,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374446802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:53:23,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:53:23,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:53:23,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511025721] [2023-08-26 23:53:23,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:53:23,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:53:23,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:53:23,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:53:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:53:23,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:53:23,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 886.6666666666666) internal successors, (2660), 3 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:23,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:53:23,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:53:23,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:53:29,549 INFO L124 PetriNetUnfolderBase]: 36142/48981 cut-off events. [2023-08-26 23:53:29,550 INFO L125 PetriNetUnfolderBase]: For 1563/1563 co-relation queries the response was YES. [2023-08-26 23:53:29,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103463 conditions, 48981 events. 36142/48981 cut-off events. For 1563/1563 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 266592 event pairs, 28615 based on Foata normal form. 0/24980 useless extension candidates. Maximal degree in co-relation 103446. Up to 48981 conditions per place. [2023-08-26 23:53:29,776 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 90 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-08-26 23:53:29,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 466 flow [2023-08-26 23:53:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:53:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:53:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2726 transitions. [2023-08-26 23:53:29,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175857843137255 [2023-08-26 23:53:29,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2726 transitions. [2023-08-26 23:53:29,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2726 transitions. [2023-08-26 23:53:29,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:53:29,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2726 transitions. [2023-08-26 23:53:29,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 908.6666666666666) internal successors, (2726), 3 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:29,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:29,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:29,786 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 288 flow. Second operand 3 states and 2726 transitions. [2023-08-26 23:53:29,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 466 flow [2023-08-26 23:53:29,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 91 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:53:29,789 INFO L231 Difference]: Finished difference. Result has 85 places, 91 transitions, 285 flow [2023-08-26 23:53:29,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=85, PETRI_TRANSITIONS=91} [2023-08-26 23:53:29,789 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -22 predicate places. [2023-08-26 23:53:29,789 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 91 transitions, 285 flow [2023-08-26 23:53:29,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.6666666666666) internal successors, (2660), 3 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:29,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:53:29,790 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:53:29,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 23:53:29,790 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:53:29,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:53:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash 697779563, now seen corresponding path program 1 times [2023-08-26 23:53:29,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:53:29,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551026616] [2023-08-26 23:53:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:53:29,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:53:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:53:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:53:29,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:53:29,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551026616] [2023-08-26 23:53:29,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551026616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:53:29,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:53:29,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:53:29,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687992625] [2023-08-26 23:53:29,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:53:29,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:53:29,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:53:29,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:53:29,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:53:29,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-26 23:53:29,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 91 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 866.0) internal successors, (2598), 3 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:29,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:53:29,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-26 23:53:29,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:53:38,095 INFO L124 PetriNetUnfolderBase]: 52808/71411 cut-off events. [2023-08-26 23:53:38,095 INFO L125 PetriNetUnfolderBase]: For 3697/3697 co-relation queries the response was YES. [2023-08-26 23:53:38,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150754 conditions, 71411 events. 52808/71411 cut-off events. For 3697/3697 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 400758 event pairs, 28615 based on Foata normal form. 0/38702 useless extension candidates. Maximal degree in co-relation 150736. Up to 48982 conditions per place. [2023-08-26 23:53:38,456 INFO L140 encePairwiseOnDemand]: 2164/2176 looper letters, 143 selfloop transitions, 2 changer transitions 0/145 dead transitions. [2023-08-26 23:53:38,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 145 transitions, 711 flow [2023-08-26 23:53:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:53:38,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:53:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2724 transitions. [2023-08-26 23:53:38,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172794117647059 [2023-08-26 23:53:38,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2724 transitions. [2023-08-26 23:53:38,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2724 transitions. [2023-08-26 23:53:38,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:53:38,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2724 transitions. [2023-08-26 23:53:38,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 908.0) internal successors, (2724), 3 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:38,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:38,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:38,468 INFO L175 Difference]: Start difference. First operand has 85 places, 91 transitions, 285 flow. Second operand 3 states and 2724 transitions. [2023-08-26 23:53:38,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 145 transitions, 711 flow [2023-08-26 23:53:38,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 145 transitions, 710 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:53:38,471 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 314 flow [2023-08-26 23:53:38,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2023-08-26 23:53:38,472 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-26 23:53:38,472 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 314 flow [2023-08-26 23:53:38,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 866.0) internal successors, (2598), 3 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:38,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:53:38,472 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:53:38,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 23:53:38,473 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:53:38,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:53:38,473 INFO L85 PathProgramCache]: Analyzing trace with hash 545477600, now seen corresponding path program 1 times [2023-08-26 23:53:38,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:53:38,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120538412] [2023-08-26 23:53:38,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:53:38,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:53:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:53:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:53:38,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:53:38,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120538412] [2023-08-26 23:53:38,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120538412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:53:38,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:53:38,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:53:38,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748603459] [2023-08-26 23:53:38,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:53:38,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:53:38,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:53:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:53:38,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:53:38,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-26 23:53:38,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 866.6666666666666) internal successors, (2600), 3 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:38,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:53:38,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-26 23:53:38,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:53:49,053 INFO L124 PetriNetUnfolderBase]: 63208/85547 cut-off events. [2023-08-26 23:53:49,053 INFO L125 PetriNetUnfolderBase]: For 7361/7361 co-relation queries the response was YES. [2023-08-26 23:53:49,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191115 conditions, 85547 events. 63208/85547 cut-off events. For 7361/7361 co-relation queries the response was YES. Maximal size of possible extension queue 1483. Compared 495103 event pairs, 41769 based on Foata normal form. 0/49698 useless extension candidates. Maximal degree in co-relation 191096. Up to 71412 conditions per place. [2023-08-26 23:53:49,527 INFO L140 encePairwiseOnDemand]: 2168/2176 looper letters, 147 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2023-08-26 23:53:49,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 149 transitions, 781 flow [2023-08-26 23:53:49,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:53:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:53:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2722 transitions. [2023-08-26 23:53:49,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169730392156863 [2023-08-26 23:53:49,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2722 transitions. [2023-08-26 23:53:49,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2722 transitions. [2023-08-26 23:53:49,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:53:49,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2722 transitions. [2023-08-26 23:53:49,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 907.3333333333334) internal successors, (2722), 3 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:49,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:49,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:49,539 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 314 flow. Second operand 3 states and 2722 transitions. [2023-08-26 23:53:49,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 149 transitions, 781 flow [2023-08-26 23:53:49,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 149 transitions, 777 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:53:49,545 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 334 flow [2023-08-26 23:53:49,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2023-08-26 23:53:49,546 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -18 predicate places. [2023-08-26 23:53:49,546 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 334 flow [2023-08-26 23:53:49,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 866.6666666666666) internal successors, (2600), 3 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:49,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:53:49,547 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:53:49,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 23:53:49,547 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:53:49,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:53:49,547 INFO L85 PathProgramCache]: Analyzing trace with hash -270059252, now seen corresponding path program 1 times [2023-08-26 23:53:49,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:53:49,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169598329] [2023-08-26 23:53:49,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:53:49,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:53:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:53:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:53:49,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:53:49,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169598329] [2023-08-26 23:53:49,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169598329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:53:49,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:53:49,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:53:49,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690239852] [2023-08-26 23:53:49,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:53:49,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:53:49,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:53:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:53:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:53:49,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-26 23:53:49,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 867.0) internal successors, (2601), 3 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:49,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:53:49,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-26 23:53:49,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:53:58,588 INFO L124 PetriNetUnfolderBase]: 52808/71419 cut-off events. [2023-08-26 23:53:58,589 INFO L125 PetriNetUnfolderBase]: For 13290/13290 co-relation queries the response was YES. [2023-08-26 23:53:58,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173952 conditions, 71419 events. 52808/71419 cut-off events. For 13290/13290 co-relation queries the response was YES. Maximal size of possible extension queue 1226. Compared 397916 event pairs, 41769 based on Foata normal form. 0/48074 useless extension candidates. Maximal degree in co-relation 173932. Up to 71419 conditions per place. [2023-08-26 23:53:58,998 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 90 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-08-26 23:53:58,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 91 transitions, 508 flow [2023-08-26 23:53:58,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:53:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:53:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2661 transitions. [2023-08-26 23:53:59,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762867647058826 [2023-08-26 23:53:59,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2661 transitions. [2023-08-26 23:53:59,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2661 transitions. [2023-08-26 23:53:59,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:53:59,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2661 transitions. [2023-08-26 23:53:59,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 887.0) internal successors, (2661), 3 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:59,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:59,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:59,008 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 334 flow. Second operand 3 states and 2661 transitions. [2023-08-26 23:53:59,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 91 transitions, 508 flow [2023-08-26 23:53:59,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:53:59,034 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 326 flow [2023-08-26 23:53:59,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2023-08-26 23:53:59,034 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -19 predicate places. [2023-08-26 23:53:59,034 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 326 flow [2023-08-26 23:53:59,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 867.0) internal successors, (2601), 3 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:59,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:53:59,035 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:53:59,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 23:53:59,035 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:53:59,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:53:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash -270059338, now seen corresponding path program 1 times [2023-08-26 23:53:59,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:53:59,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135059095] [2023-08-26 23:53:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:53:59,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:53:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:53:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-26 23:53:59,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:53:59,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135059095] [2023-08-26 23:53:59,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135059095] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:53:59,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:53:59,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:53:59,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366452970] [2023-08-26 23:53:59,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:53:59,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:53:59,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:53:59,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:53:59,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:53:59,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:53:59,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 888.0) internal successors, (2664), 3 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:53:59,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:53:59,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:53:59,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand