/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 13:00:49,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 13:00:49,730 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 13:00:49,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 13:00:49,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 13:00:49,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 13:00:49,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 13:00:49,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 13:00:49,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 13:00:49,766 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 13:00:49,767 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 13:00:49,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 13:00:49,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 13:00:49,768 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 13:00:49,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 13:00:49,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 13:00:49,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 13:00:49,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 13:00:49,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 13:00:49,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 13:00:49,770 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 13:00:49,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 13:00:49,770 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 13:00:49,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 13:00:49,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 13:00:49,771 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 13:00:49,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 13:00:49,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:00:49,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 13:00:49,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 13:00:49,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 13:00:49,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 13:00:49,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 13:00:49,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 13:00:49,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 13:00:49,773 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 13:00:50,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 13:00:50,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 13:00:50,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 13:00:50,097 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 13:00:50,098 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 13:00:50,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2023-08-27 13:00:51,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 13:00:51,514 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 13:00:51,515 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2023-08-27 13:00:51,531 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805155a8c/cb62a600b26a44faac91f8c55d92472e/FLAG90f79e14c [2023-08-27 13:00:51,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/805155a8c/cb62a600b26a44faac91f8c55d92472e [2023-08-27 13:00:51,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 13:00:51,553 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 13:00:51,556 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 13:00:51,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 13:00:51,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 13:00:51,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:51,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f9f729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51, skipping insertion in model container [2023-08-27 13:00:51,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:51,600 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 13:00:51,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:00:51,842 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 13:00:51,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:00:51,909 INFO L206 MainTranslator]: Completed translation [2023-08-27 13:00:51,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51 WrapperNode [2023-08-27 13:00:51,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 13:00:51,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 13:00:51,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 13:00:51,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 13:00:51,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:51,927 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:51,976 INFO L138 Inliner]: procedures = 26, calls = 77, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 738 [2023-08-27 13:00:51,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 13:00:51,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 13:00:51,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 13:00:51,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 13:00:51,986 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:51,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:51,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:51,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:52,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:52,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:52,041 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:52,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:52,048 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 13:00:52,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 13:00:52,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 13:00:52,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 13:00:52,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (1/1) ... [2023-08-27 13:00:52,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:00:52,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:00:52,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 13:00:52,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 13:00:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 13:00:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 13:00:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 13:00:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 13:00:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 13:00:52,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 13:00:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 13:00:52,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 13:00:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 13:00:52,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 13:00:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 13:00:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 13:00:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 13:00:52,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 13:00:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 13:00:52,114 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 13:00:52,249 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 13:00:52,250 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 13:00:53,096 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 13:00:53,106 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 13:00:53,106 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 13:00:53,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:00:53 BoogieIcfgContainer [2023-08-27 13:00:53,109 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 13:00:53,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 13:00:53,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 13:00:53,113 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 13:00:53,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:00:51" (1/3) ... [2023-08-27 13:00:53,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145308bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:00:53, skipping insertion in model container [2023-08-27 13:00:53,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:51" (2/3) ... [2023-08-27 13:00:53,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145308bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:00:53, skipping insertion in model container [2023-08-27 13:00:53,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:00:53" (3/3) ... [2023-08-27 13:00:53,115 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2023-08-27 13:00:53,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 13:00:53,130 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2023-08-27 13:00:53,130 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 13:00:53,308 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 13:00:53,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 850 places, 931 transitions, 1886 flow [2023-08-27 13:00:53,801 INFO L124 PetriNetUnfolderBase]: 91/928 cut-off events. [2023-08-27 13:00:53,802 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 13:00:53,832 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. [2023-08-27 13:00:53,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 850 places, 931 transitions, 1886 flow [2023-08-27 13:00:53,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 836 places, 917 transitions, 1852 flow [2023-08-27 13:00:53,862 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 13:00:53,873 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 836 places, 917 transitions, 1852 flow [2023-08-27 13:00:53,879 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 836 places, 917 transitions, 1852 flow [2023-08-27 13:00:53,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 836 places, 917 transitions, 1852 flow [2023-08-27 13:00:54,185 INFO L124 PetriNetUnfolderBase]: 91/917 cut-off events. [2023-08-27 13:00:54,185 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 13:00:54,208 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. [2023-08-27 13:00:54,288 INFO L119 LiptonReduction]: Number of co-enabled transitions 311688 [2023-08-27 13:01:44,964 INFO L134 LiptonReduction]: Checked pairs total: 311393 [2023-08-27 13:01:44,965 INFO L136 LiptonReduction]: Total number of compositions: 1245 [2023-08-27 13:01:44,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 13:01:44,984 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;@5343c2cd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 13:01:44,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2023-08-27 13:01:44,986 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 13:01:44,986 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 13:01:44,987 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 13:01:44,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:01:44,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 13:01:44,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:01:44,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:01:44,991 INFO L85 PathProgramCache]: Analyzing trace with hash 132701, now seen corresponding path program 1 times [2023-08-27 13:01:44,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:01:44,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265598253] [2023-08-27 13:01:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:01:44,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:01:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:01:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:01:45,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:01:45,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265598253] [2023-08-27 13:01:45,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265598253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:01:45,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:01:45,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:01:45,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128117519] [2023-08-27 13:01:45,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:01:45,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:01:45,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:01:45,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:01:45,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:01:45,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 863 out of 2176 [2023-08-27 13:01:45,311 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) [2023-08-27 13:01:45,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:01:45,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 863 of 2176 [2023-08-27 13:01:45,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:01:53,200 INFO L124 PetriNetUnfolderBase]: 51579/70344 cut-off events. [2023-08-27 13:01:53,200 INFO L125 PetriNetUnfolderBase]: For 1537/1537 co-relation queries the response was YES. [2023-08-27 13:01:53,297 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. [2023-08-27 13:01:53,611 INFO L140 encePairwiseOnDemand]: 2148/2176 looper letters, 94 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2023-08-27 13:01:53,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 101 transitions, 422 flow [2023-08-27 13:01:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:01:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:01:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2711 transitions. [2023-08-27 13:01:53,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152879901960784 [2023-08-27 13:01:53,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2711 transitions. [2023-08-27 13:01:53,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2711 transitions. [2023-08-27 13:01:53,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:01:53,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2711 transitions. [2023-08-27 13:01:53,654 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) [2023-08-27 13:01:53,669 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) [2023-08-27 13:01:53,673 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) [2023-08-27 13:01:53,675 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 238 flow. Second operand 3 states and 2711 transitions. [2023-08-27 13:01:53,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 101 transitions, 422 flow [2023-08-27 13:01:53,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 101 transitions, 410 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 13:01:53,714 INFO L231 Difference]: Finished difference. Result has 90 places, 101 transitions, 260 flow [2023-08-27 13:01:53,716 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} [2023-08-27 13:01:53,720 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -17 predicate places. [2023-08-27 13:01:53,721 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 101 transitions, 260 flow [2023-08-27 13:01:53,722 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) [2023-08-27 13:01:53,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:01:53,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 13:01:53,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 13:01:53,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:01:53,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:01:53,724 INFO L85 PathProgramCache]: Analyzing trace with hash 4120093, now seen corresponding path program 1 times [2023-08-27 13:01:53,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:01:53,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227670237] [2023-08-27 13:01:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:01:53,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:01:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:01:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:01:53,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:01:53,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227670237] [2023-08-27 13:01:53,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227670237] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:01:53,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988945081] [2023-08-27 13:01:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:01:53,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:01:53,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:01:53,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:01:53,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 13:01:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:01:54,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 13:01:54,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:01:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:01:54,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:01:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:01:54,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988945081] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:01:54,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:01:54,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 13:01:54,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266234729] [2023-08-27 13:01:54,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:01:54,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:01:54,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:01:54,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:01:54,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:01:54,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 863 out of 2176 [2023-08-27 13:01:54,134 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) [2023-08-27 13:01:54,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:01:54,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 863 of 2176 [2023-08-27 13:01:54,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:02:01,457 INFO L124 PetriNetUnfolderBase]: 51597/70371 cut-off events. [2023-08-27 13:02:01,457 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2023-08-27 13:02:01,533 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. [2023-08-27 13:02:01,858 INFO L140 encePairwiseOnDemand]: 2163/2176 looper letters, 91 selfloop transitions, 37 changer transitions 0/128 dead transitions. [2023-08-27 13:02:01,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 636 flow [2023-08-27 13:02:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:02:01,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:02:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6178 transitions. [2023-08-27 13:02:01,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405593487394958 [2023-08-27 13:02:01,876 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6178 transitions. [2023-08-27 13:02:01,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6178 transitions. [2023-08-27 13:02:01,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:02:01,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6178 transitions. [2023-08-27 13:02:01,896 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) [2023-08-27 13:02:01,924 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) [2023-08-27 13:02:01,933 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) [2023-08-27 13:02:01,934 INFO L175 Difference]: Start difference. First operand has 90 places, 101 transitions, 260 flow. Second operand 7 states and 6178 transitions. [2023-08-27 13:02:01,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 636 flow [2023-08-27 13:02:01,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 128 transitions, 610 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:02:01,940 INFO L231 Difference]: Finished difference. Result has 97 places, 128 transitions, 490 flow [2023-08-27 13:02:01,940 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} [2023-08-27 13:02:01,941 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -10 predicate places. [2023-08-27 13:02:01,941 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 128 transitions, 490 flow [2023-08-27 13:02:01,944 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) [2023-08-27 13:02:01,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:02:01,944 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 13:02:01,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 13:02:02,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:02:02,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:02:02,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:02:02,153 INFO L85 PathProgramCache]: Analyzing trace with hash 127726717, now seen corresponding path program 1 times [2023-08-27 13:02:02,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:02:02,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267755310] [2023-08-27 13:02:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:02:02,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:02:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:02:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 13:02:02,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:02:02,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267755310] [2023-08-27 13:02:02,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267755310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:02:02,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:02:02,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:02:02,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677355415] [2023-08-27 13:02:02,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:02:02,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:02:02,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:02:02,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:02:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:02:02,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 863 out of 2176 [2023-08-27 13:02:02,233 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) [2023-08-27 13:02:02,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:02:02,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 863 of 2176 [2023-08-27 13:02:02,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:02:09,462 INFO L124 PetriNetUnfolderBase]: 51588/70359 cut-off events. [2023-08-27 13:02:09,462 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2023-08-27 13:02:09,576 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. [2023-08-27 13:02:09,820 INFO L140 encePairwiseOnDemand]: 2171/2176 looper letters, 110 selfloop transitions, 6 changer transitions 0/116 dead transitions. [2023-08-27 13:02:09,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 641 flow [2023-08-27 13:02:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:02:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:02:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2684 transitions. [2023-08-27 13:02:09,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111519607843137 [2023-08-27 13:02:09,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2684 transitions. [2023-08-27 13:02:09,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2684 transitions. [2023-08-27 13:02:09,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:02:09,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2684 transitions. [2023-08-27 13:02:09,833 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) [2023-08-27 13:02:09,854 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) [2023-08-27 13:02:09,856 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) [2023-08-27 13:02:09,857 INFO L175 Difference]: Start difference. First operand has 97 places, 128 transitions, 490 flow. Second operand 3 states and 2684 transitions. [2023-08-27 13:02:09,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 641 flow [2023-08-27 13:02:09,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 116 transitions, 604 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-27 13:02:09,862 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 384 flow [2023-08-27 13:02:09,862 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} [2023-08-27 13:02:09,864 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -13 predicate places. [2023-08-27 13:02:09,864 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 384 flow [2023-08-27 13:02:09,865 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) [2023-08-27 13:02:09,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:02:09,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 13:02:09,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 13:02:09,865 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:02:09,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:02:09,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1600780398, now seen corresponding path program 1 times [2023-08-27 13:02:09,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:02:09,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868075599] [2023-08-27 13:02:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:02:09,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:02:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:02:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:02:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:02:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868075599] [2023-08-27 13:02:09,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868075599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:02:09,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:02:09,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:02:09,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008493530] [2023-08-27 13:02:09,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:02:09,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:02:09,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:02:09,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:02:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:02:09,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 854 out of 2176 [2023-08-27 13:02:09,977 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) [2023-08-27 13:02:09,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:02:09,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 854 of 2176 [2023-08-27 13:02:09,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:02:17,107 INFO L124 PetriNetUnfolderBase]: 51585/70356 cut-off events. [2023-08-27 13:02:17,107 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-08-27 13:02:17,227 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. [2023-08-27 13:02:17,417 INFO L140 encePairwiseOnDemand]: 2169/2176 looper letters, 101 selfloop transitions, 12 changer transitions 0/113 dead transitions. [2023-08-27 13:02:17,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 113 transitions, 595 flow [2023-08-27 13:02:17,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:02:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:02:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2660 transitions. [2023-08-27 13:02:17,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074754901960784 [2023-08-27 13:02:17,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2660 transitions. [2023-08-27 13:02:17,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2660 transitions. [2023-08-27 13:02:17,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:02:17,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2660 transitions. [2023-08-27 13:02:17,427 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) [2023-08-27 13:02:17,436 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) [2023-08-27 13:02:17,437 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) [2023-08-27 13:02:17,437 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 384 flow. Second operand 3 states and 2660 transitions. [2023-08-27 13:02:17,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 113 transitions, 595 flow [2023-08-27 13:02:17,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 113 transitions, 585 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:02:17,440 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 383 flow [2023-08-27 13:02:17,440 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} [2023-08-27 13:02:17,441 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -13 predicate places. [2023-08-27 13:02:17,441 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 383 flow [2023-08-27 13:02:17,442 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) [2023-08-27 13:02:17,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:02:17,442 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 13:02:17,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 13:02:17,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:02:17,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:02:17,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1808475412, now seen corresponding path program 2 times [2023-08-27 13:02:17,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:02:17,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172421984] [2023-08-27 13:02:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:02:17,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:02:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:02:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:02:17,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:02:17,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172421984] [2023-08-27 13:02:17,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172421984] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:02:17,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40847772] [2023-08-27 13:02:17,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 13:02:17,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:02:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:02:17,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:02:17,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 13:02:17,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 13:02:17,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:02:17,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 13:02:17,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:02:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 13:02:17,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:02:17,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40847772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:02:17,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:02:17,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 13:02:17,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916180011] [2023-08-27 13:02:17,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:02:17,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:02:17,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:02:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:02:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 13:02:17,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 869 out of 2176 [2023-08-27 13:02:17,746 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) [2023-08-27 13:02:17,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:02:17,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 869 of 2176 [2023-08-27 13:02:17,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:02:24,714 INFO L124 PetriNetUnfolderBase]: 51585/70353 cut-off events. [2023-08-27 13:02:24,715 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2023-08-27 13:02:24,835 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. [2023-08-27 13:02:25,031 INFO L140 encePairwiseOnDemand]: 2172/2176 looper letters, 109 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-08-27 13:02:25,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 573 flow [2023-08-27 13:02:25,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:02:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:02:25,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2699 transitions. [2023-08-27 13:02:25,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134497549019608 [2023-08-27 13:02:25,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2699 transitions. [2023-08-27 13:02:25,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2699 transitions. [2023-08-27 13:02:25,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:02:25,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2699 transitions. [2023-08-27 13:02:25,043 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) [2023-08-27 13:02:25,050 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) [2023-08-27 13:02:25,052 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) [2023-08-27 13:02:25,052 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 383 flow. Second operand 3 states and 2699 transitions. [2023-08-27 13:02:25,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 573 flow [2023-08-27 13:02:25,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 502 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-27 13:02:25,054 INFO L231 Difference]: Finished difference. Result has 87 places, 110 transitions, 284 flow [2023-08-27 13:02:25,055 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} [2023-08-27 13:02:25,055 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-27 13:02:25,055 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 110 transitions, 284 flow [2023-08-27 13:02:25,056 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) [2023-08-27 13:02:25,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:02:25,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:02:25,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 13:02:25,261 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 [2023-08-27 13:02:25,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:02:25,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:02:25,262 INFO L85 PathProgramCache]: Analyzing trace with hash -160107372, now seen corresponding path program 1 times [2023-08-27 13:02:25,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:02:25,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874040447] [2023-08-27 13:02:25,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:02:25,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:02:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:02:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:02:25,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:02:25,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874040447] [2023-08-27 13:02:25,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874040447] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:02:25,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363835938] [2023-08-27 13:02:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:02:25,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:02:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:02:25,362 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:02:25,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 13:02:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:02:25,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 13:02:25,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:02:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:02:25,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:02:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 13:02:25,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363835938] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:02:25,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:02:25,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-27 13:02:25,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929299412] [2023-08-27 13:02:25,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:02:25,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 13:02:25,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:02:25,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 13:02:25,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-27 13:02:25,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 854 out of 2176 [2023-08-27 13:02:25,596 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) [2023-08-27 13:02:25,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:02:25,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 854 of 2176 [2023-08-27 13:02:25,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:02:32,390 INFO L124 PetriNetUnfolderBase]: 51576/70344 cut-off events. [2023-08-27 13:02:32,390 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2023-08-27 13:02:32,460 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. [2023-08-27 13:02:32,634 INFO L140 encePairwiseOnDemand]: 2169/2176 looper letters, 86 selfloop transitions, 15 changer transitions 0/101 dead transitions. [2023-08-27 13:02:32,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 450 flow [2023-08-27 13:02:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 13:02:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 13:02:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5234 transitions. [2023-08-27 13:02:32,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40088848039215685 [2023-08-27 13:02:32,648 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5234 transitions. [2023-08-27 13:02:32,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5234 transitions. [2023-08-27 13:02:32,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:02:32,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5234 transitions. [2023-08-27 13:02:32,657 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) [2023-08-27 13:02:32,671 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) [2023-08-27 13:02:32,674 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) [2023-08-27 13:02:32,674 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 284 flow. Second operand 6 states and 5234 transitions. [2023-08-27 13:02:32,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 450 flow [2023-08-27 13:02:32,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:02:32,676 INFO L231 Difference]: Finished difference. Result has 91 places, 101 transitions, 277 flow [2023-08-27 13:02:32,676 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} [2023-08-27 13:02:32,677 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -16 predicate places. [2023-08-27 13:02:32,677 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 277 flow [2023-08-27 13:02:32,678 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) [2023-08-27 13:02:32,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:02:32,679 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 13:02:32,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 13:02:32,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:02:32,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:02:32,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:02:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash 225119058, now seen corresponding path program 1 times [2023-08-27 13:02:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:02:32,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725569399] [2023-08-27 13:02:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:02:32,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:02:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:02:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-27 13:02:33,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:02:33,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725569399] [2023-08-27 13:02:33,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725569399] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:02:33,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282337080] [2023-08-27 13:02:33,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:02:33,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:02:33,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:02:33,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:02:33,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 13:02:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:02:33,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 13:02:33,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:02:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-27 13:02:33,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:02:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-27 13:02:33,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282337080] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:02:33,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:02:33,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 13:02:33,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008492871] [2023-08-27 13:02:33,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:02:33,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 13:02:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:02:33,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 13:02:33,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-08-27 13:02:33,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 854 out of 2176 [2023-08-27 13:02:33,352 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) [2023-08-27 13:02:33,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:02:33,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 854 of 2176 [2023-08-27 13:02:33,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:02:40,324 INFO L124 PetriNetUnfolderBase]: 51576/70347 cut-off events. [2023-08-27 13:02:40,324 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2023-08-27 13:02:40,411 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. [2023-08-27 13:02:40,592 INFO L140 encePairwiseOnDemand]: 2169/2176 looper letters, 86 selfloop transitions, 18 changer transitions 0/104 dead transitions. [2023-08-27 13:02:40,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 497 flow [2023-08-27 13:02:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:02:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:02:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6085 transitions. [2023-08-27 13:02:40,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994879201680672 [2023-08-27 13:02:40,601 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6085 transitions. [2023-08-27 13:02:40,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6085 transitions. [2023-08-27 13:02:40,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:02:40,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6085 transitions. [2023-08-27 13:02:40,613 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) [2023-08-27 13:02:40,623 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) [2023-08-27 13:02:40,624 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) [2023-08-27 13:02:40,625 INFO L175 Difference]: Start difference. First operand has 91 places, 101 transitions, 277 flow. Second operand 7 states and 6085 transitions. [2023-08-27 13:02:40,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 497 flow [2023-08-27 13:02:40,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 104 transitions, 467 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 13:02:40,627 INFO L231 Difference]: Finished difference. Result has 93 places, 104 transitions, 309 flow [2023-08-27 13:02:40,627 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} [2023-08-27 13:02:40,628 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -14 predicate places. [2023-08-27 13:02:40,628 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 104 transitions, 309 flow [2023-08-27 13:02:40,630 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) [2023-08-27 13:02:40,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:02:40,630 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-27 13:02:40,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 13:02:40,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:02:40,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:02:40,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:02:40,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953325, now seen corresponding path program 2 times [2023-08-27 13:02:40,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:02:40,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946988448] [2023-08-27 13:02:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:02:40,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:02:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:02:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-27 13:02:40,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:02:40,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946988448] [2023-08-27 13:02:40,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946988448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:02:40,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:02:40,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:02:40,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110336202] [2023-08-27 13:02:40,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:02:40,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:02:40,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:02:40,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:02:40,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:02:40,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-27 13:02:40,953 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) [2023-08-27 13:02:40,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:02:40,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-27 13:02:40,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:02:47,363 INFO L124 PetriNetUnfolderBase]: 46388/63235 cut-off events. [2023-08-27 13:02:47,363 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2023-08-27 13:02:47,447 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. [2023-08-27 13:02:47,604 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 101 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-08-27 13:02:47,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 102 transitions, 509 flow [2023-08-27 13:02:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:02:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:02:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2738 transitions. [2023-08-27 13:02:47,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41942401960784315 [2023-08-27 13:02:47,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2738 transitions. [2023-08-27 13:02:47,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2738 transitions. [2023-08-27 13:02:47,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:02:47,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2738 transitions. [2023-08-27 13:02:47,614 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) [2023-08-27 13:02:47,619 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) [2023-08-27 13:02:47,620 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) [2023-08-27 13:02:47,620 INFO L175 Difference]: Start difference. First operand has 93 places, 104 transitions, 309 flow. Second operand 3 states and 2738 transitions. [2023-08-27 13:02:47,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 102 transitions, 509 flow [2023-08-27 13:02:47,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 102 transitions, 479 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-27 13:02:47,623 INFO L231 Difference]: Finished difference. Result has 89 places, 102 transitions, 277 flow [2023-08-27 13:02:47,623 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} [2023-08-27 13:02:47,623 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -18 predicate places. [2023-08-27 13:02:47,623 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 102 transitions, 277 flow [2023-08-27 13:02:47,624 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) [2023-08-27 13:02:47,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:02:47,624 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-27 13:02:47,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 13:02:47,624 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:02:47,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:02:47,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953324, now seen corresponding path program 2 times [2023-08-27 13:02:47,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:02:47,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389652378] [2023-08-27 13:02:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:02:47,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:02:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:02:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-27 13:02:47,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:02:47,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389652378] [2023-08-27 13:02:47,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389652378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:02:47,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:02:47,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:02:47,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746551245] [2023-08-27 13:02:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:02:47,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:02:47,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:02:47,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:02:47,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:02:47,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-27 13:02:47,736 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) [2023-08-27 13:02:47,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:02:47,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-27 13:02:47,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:02:53,474 INFO L124 PetriNetUnfolderBase]: 42827/58330 cut-off events. [2023-08-27 13:02:53,475 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-08-27 13:02:53,569 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. [2023-08-27 13:02:53,921 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 99 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2023-08-27 13:02:53,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 100 transitions, 473 flow [2023-08-27 13:02:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:02:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:02:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2736 transitions. [2023-08-27 13:02:53,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911764705882354 [2023-08-27 13:02:53,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2736 transitions. [2023-08-27 13:02:53,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2736 transitions. [2023-08-27 13:02:53,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:02:53,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2736 transitions. [2023-08-27 13:02:53,930 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) [2023-08-27 13:02:53,936 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) [2023-08-27 13:02:53,936 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) [2023-08-27 13:02:53,937 INFO L175 Difference]: Start difference. First operand has 89 places, 102 transitions, 277 flow. Second operand 3 states and 2736 transitions. [2023-08-27 13:02:53,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 100 transitions, 473 flow [2023-08-27 13:02:53,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:02:53,939 INFO L231 Difference]: Finished difference. Result has 88 places, 100 transitions, 274 flow [2023-08-27 13:02:53,939 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} [2023-08-27 13:02:53,940 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -19 predicate places. [2023-08-27 13:02:53,940 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 100 transitions, 274 flow [2023-08-27 13:02:53,940 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) [2023-08-27 13:02:53,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:02:53,941 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-27 13:02:53,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 13:02:53,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:02:53,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:02:53,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953405, now seen corresponding path program 1 times [2023-08-27 13:02:53,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:02:53,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616354006] [2023-08-27 13:02:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:02:53,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:02:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:02:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-27 13:02:54,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:02:54,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616354006] [2023-08-27 13:02:54,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616354006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:02:54,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:02:54,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:02:54,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221428218] [2023-08-27 13:02:54,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:02:54,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:02:54,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:02:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:02:54,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:02:54,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-27 13:02:54,036 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) [2023-08-27 13:02:54,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:02:54,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-27 13:02:54,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:02:59,311 INFO L124 PetriNetUnfolderBase]: 39408/53623 cut-off events. [2023-08-27 13:02:59,311 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-27 13:02:59,407 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. [2023-08-27 13:02:59,738 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 97 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-08-27 13:02:59,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 98 transitions, 466 flow [2023-08-27 13:02:59,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:02:59,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:02:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2734 transitions. [2023-08-27 13:02:59,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41881127450980393 [2023-08-27 13:02:59,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2734 transitions. [2023-08-27 13:02:59,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2734 transitions. [2023-08-27 13:02:59,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:02:59,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2734 transitions. [2023-08-27 13:02:59,745 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) [2023-08-27 13:02:59,748 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) [2023-08-27 13:02:59,749 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) [2023-08-27 13:02:59,749 INFO L175 Difference]: Start difference. First operand has 88 places, 100 transitions, 274 flow. Second operand 3 states and 2734 transitions. [2023-08-27 13:02:59,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 98 transitions, 466 flow [2023-08-27 13:02:59,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 98 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:02:59,752 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 271 flow [2023-08-27 13:02:59,752 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} [2023-08-27 13:02:59,753 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-27 13:02:59,753 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 271 flow [2023-08-27 13:02:59,754 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) [2023-08-27 13:02:59,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:02:59,754 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-27 13:02:59,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 13:02:59,754 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:02:59,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:02:59,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953327, now seen corresponding path program 1 times [2023-08-27 13:02:59,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:02:59,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526658585] [2023-08-27 13:02:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:02:59,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:02:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:02:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-27 13:02:59,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:02:59,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526658585] [2023-08-27 13:02:59,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526658585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:02:59,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:02:59,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:02:59,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813484644] [2023-08-27 13:02:59,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:02:59,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:02:59,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:02:59,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:02:59,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:02:59,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-27 13:02:59,926 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) [2023-08-27 13:02:59,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:02:59,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-27 13:02:59,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:03:04,721 INFO L124 PetriNetUnfolderBase]: 35096/47723 cut-off events. [2023-08-27 13:03:04,721 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2023-08-27 13:03:04,807 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. [2023-08-27 13:03:04,929 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 95 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2023-08-27 13:03:04,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 459 flow [2023-08-27 13:03:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:03:04,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:03:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2732 transitions. [2023-08-27 13:03:04,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185049019607843 [2023-08-27 13:03:04,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2732 transitions. [2023-08-27 13:03:04,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2732 transitions. [2023-08-27 13:03:04,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:03:04,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2732 transitions. [2023-08-27 13:03:04,936 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) [2023-08-27 13:03:04,940 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) [2023-08-27 13:03:04,941 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) [2023-08-27 13:03:04,941 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 271 flow. Second operand 3 states and 2732 transitions. [2023-08-27 13:03:04,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 459 flow [2023-08-27 13:03:04,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 96 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:03:04,943 INFO L231 Difference]: Finished difference. Result has 86 places, 96 transitions, 268 flow [2023-08-27 13:03:04,944 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} [2023-08-27 13:03:04,944 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -21 predicate places. [2023-08-27 13:03:04,944 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 96 transitions, 268 flow [2023-08-27 13:03:04,945 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) [2023-08-27 13:03:04,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:03:04,945 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:03:04,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 13:03:04,946 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:03:04,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:03:04,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1795915633, now seen corresponding path program 1 times [2023-08-27 13:03:04,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:03:04,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107194419] [2023-08-27 13:03:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:03:04,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:03:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:03:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-27 13:03:05,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:03:05,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107194419] [2023-08-27 13:03:05,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107194419] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:03:05,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:03:05,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:03:05,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120586787] [2023-08-27 13:03:05,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:03:05,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:03:05,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:03:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:03:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:03:05,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-27 13:03:05,082 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) [2023-08-27 13:03:05,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:03:05,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-27 13:03:05,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:03:09,482 INFO L124 PetriNetUnfolderBase]: 31016/42143 cut-off events. [2023-08-27 13:03:09,482 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2023-08-27 13:03:09,576 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. [2023-08-27 13:03:09,682 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 93 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-27 13:03:09,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 452 flow [2023-08-27 13:03:09,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:03:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:03:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2730 transitions. [2023-08-27 13:03:09,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181985294117647 [2023-08-27 13:03:09,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2730 transitions. [2023-08-27 13:03:09,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2730 transitions. [2023-08-27 13:03:09,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:03:09,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2730 transitions. [2023-08-27 13:03:09,690 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) [2023-08-27 13:03:09,694 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) [2023-08-27 13:03:09,695 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) [2023-08-27 13:03:09,695 INFO L175 Difference]: Start difference. First operand has 86 places, 96 transitions, 268 flow. Second operand 3 states and 2730 transitions. [2023-08-27 13:03:09,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 452 flow [2023-08-27 13:03:09,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 94 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:03:09,697 INFO L231 Difference]: Finished difference. Result has 85 places, 94 transitions, 265 flow [2023-08-27 13:03:09,698 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} [2023-08-27 13:03:09,698 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -22 predicate places. [2023-08-27 13:03:09,698 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 94 transitions, 265 flow [2023-08-27 13:03:09,699 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) [2023-08-27 13:03:09,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:03:09,699 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:03:09,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 13:03:09,699 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:03:09,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:03:09,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1795915635, now seen corresponding path program 1 times [2023-08-27 13:03:09,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:03:09,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228393600] [2023-08-27 13:03:09,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:03:09,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:03:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:03:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-27 13:03:09,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:03:09,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228393600] [2023-08-27 13:03:09,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228393600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:03:09,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:03:09,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:03:09,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236228631] [2023-08-27 13:03:09,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:03:09,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:03:09,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:03:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:03:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:03:09,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-27 13:03:09,776 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) [2023-08-27 13:03:09,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:03:09,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-27 13:03:09,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:03:16,913 INFO L124 PetriNetUnfolderBase]: 47338/64273 cut-off events. [2023-08-27 13:03:16,913 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2023-08-27 13:03:17,060 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. [2023-08-27 13:03:17,217 INFO L140 encePairwiseOnDemand]: 2165/2176 looper letters, 152 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-08-27 13:03:17,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 154 transitions, 698 flow [2023-08-27 13:03:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:03:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:03:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2734 transitions. [2023-08-27 13:03:17,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41881127450980393 [2023-08-27 13:03:17,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2734 transitions. [2023-08-27 13:03:17,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2734 transitions. [2023-08-27 13:03:17,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:03:17,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2734 transitions. [2023-08-27 13:03:17,224 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) [2023-08-27 13:03:17,227 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) [2023-08-27 13:03:17,227 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) [2023-08-27 13:03:17,228 INFO L175 Difference]: Start difference. First operand has 85 places, 94 transitions, 265 flow. Second operand 3 states and 2734 transitions. [2023-08-27 13:03:17,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 154 transitions, 698 flow [2023-08-27 13:03:17,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 154 transitions, 697 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:03:17,230 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 292 flow [2023-08-27 13:03:17,230 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} [2023-08-27 13:03:17,230 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-27 13:03:17,230 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 292 flow [2023-08-27 13:03:17,231 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) [2023-08-27 13:03:17,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:03:17,231 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:03:17,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 13:03:17,231 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:03:17,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:03:17,231 INFO L85 PathProgramCache]: Analyzing trace with hash 161056403, now seen corresponding path program 1 times [2023-08-27 13:03:17,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:03:17,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135610238] [2023-08-27 13:03:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:03:17,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:03:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:03:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-27 13:03:17,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:03:17,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135610238] [2023-08-27 13:03:17,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135610238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:03:17,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:03:17,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:03:17,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545547474] [2023-08-27 13:03:17,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:03:17,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:03:17,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:03:17,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:03:17,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:03:17,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-27 13:03:17,334 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) [2023-08-27 13:03:17,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:03:17,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-27 13:03:17,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:03:23,396 INFO L124 PetriNetUnfolderBase]: 41572/56395 cut-off events. [2023-08-27 13:03:23,396 INFO L125 PetriNetUnfolderBase]: For 2692/2692 co-relation queries the response was YES. [2023-08-27 13:03:23,543 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. [2023-08-27 13:03:23,686 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 92 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-08-27 13:03:23,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 474 flow [2023-08-27 13:03:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:03:23,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:03:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2728 transitions. [2023-08-27 13:03:23,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4178921568627451 [2023-08-27 13:03:23,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2728 transitions. [2023-08-27 13:03:23,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2728 transitions. [2023-08-27 13:03:23,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:03:23,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2728 transitions. [2023-08-27 13:03:23,694 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) [2023-08-27 13:03:23,698 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) [2023-08-27 13:03:23,699 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) [2023-08-27 13:03:23,699 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 292 flow. Second operand 3 states and 2728 transitions. [2023-08-27 13:03:23,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 474 flow [2023-08-27 13:03:23,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:03:23,715 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 288 flow [2023-08-27 13:03:23,716 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} [2023-08-27 13:03:23,716 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -21 predicate places. [2023-08-27 13:03:23,716 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 288 flow [2023-08-27 13:03:23,717 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) [2023-08-27 13:03:23,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:03:23,717 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:03:23,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 13:03:23,717 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:03:23,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:03:23,718 INFO L85 PathProgramCache]: Analyzing trace with hash 161056319, now seen corresponding path program 1 times [2023-08-27 13:03:23,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:03:23,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872915922] [2023-08-27 13:03:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:03:23,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:03:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:03:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-27 13:03:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:03:23,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872915922] [2023-08-27 13:03:23,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872915922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:03:23,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:03:23,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:03:23,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618224898] [2023-08-27 13:03:23,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:03:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:03:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:03:23,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:03:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:03:23,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-27 13:03:23,803 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) [2023-08-27 13:03:23,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:03:23,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-27 13:03:23,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:03:29,283 INFO L124 PetriNetUnfolderBase]: 36142/48981 cut-off events. [2023-08-27 13:03:29,283 INFO L125 PetriNetUnfolderBase]: For 1563/1563 co-relation queries the response was YES. [2023-08-27 13:03:29,407 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. [2023-08-27 13:03:29,523 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 90 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-08-27 13:03:29,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 466 flow [2023-08-27 13:03:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:03:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:03:29,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2726 transitions. [2023-08-27 13:03:29,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175857843137255 [2023-08-27 13:03:29,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2726 transitions. [2023-08-27 13:03:29,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2726 transitions. [2023-08-27 13:03:29,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:03:29,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2726 transitions. [2023-08-27 13:03:29,532 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) [2023-08-27 13:03:29,535 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) [2023-08-27 13:03:29,536 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) [2023-08-27 13:03:29,536 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 288 flow. Second operand 3 states and 2726 transitions. [2023-08-27 13:03:29,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 466 flow [2023-08-27 13:03:29,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 91 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:03:29,539 INFO L231 Difference]: Finished difference. Result has 85 places, 91 transitions, 285 flow [2023-08-27 13:03:29,539 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} [2023-08-27 13:03:29,539 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -22 predicate places. [2023-08-27 13:03:29,540 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 91 transitions, 285 flow [2023-08-27 13:03:29,540 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) [2023-08-27 13:03:29,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:03:29,540 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:03:29,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 13:03:29,540 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:03:29,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:03:29,541 INFO L85 PathProgramCache]: Analyzing trace with hash 697779563, now seen corresponding path program 1 times [2023-08-27 13:03:29,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:03:29,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226218879] [2023-08-27 13:03:29,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:03:29,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:03:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:03:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-27 13:03:29,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:03:29,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226218879] [2023-08-27 13:03:29,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226218879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:03:29,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:03:29,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:03:29,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29408965] [2023-08-27 13:03:29,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:03:29,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:03:29,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:03:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:03:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:03:29,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-27 13:03:29,617 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) [2023-08-27 13:03:29,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:03:29,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-27 13:03:29,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:03:37,652 INFO L124 PetriNetUnfolderBase]: 52808/71411 cut-off events. [2023-08-27 13:03:37,652 INFO L125 PetriNetUnfolderBase]: For 3697/3697 co-relation queries the response was YES. [2023-08-27 13:03:37,852 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. [2023-08-27 13:03:38,019 INFO L140 encePairwiseOnDemand]: 2164/2176 looper letters, 143 selfloop transitions, 2 changer transitions 0/145 dead transitions. [2023-08-27 13:03:38,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 145 transitions, 711 flow [2023-08-27 13:03:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:03:38,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:03:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2724 transitions. [2023-08-27 13:03:38,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172794117647059 [2023-08-27 13:03:38,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2724 transitions. [2023-08-27 13:03:38,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2724 transitions. [2023-08-27 13:03:38,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:03:38,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2724 transitions. [2023-08-27 13:03:38,026 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) [2023-08-27 13:03:38,030 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) [2023-08-27 13:03:38,031 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) [2023-08-27 13:03:38,031 INFO L175 Difference]: Start difference. First operand has 85 places, 91 transitions, 285 flow. Second operand 3 states and 2724 transitions. [2023-08-27 13:03:38,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 145 transitions, 711 flow [2023-08-27 13:03:38,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 145 transitions, 710 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:03:38,035 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 314 flow [2023-08-27 13:03:38,035 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} [2023-08-27 13:03:38,035 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-27 13:03:38,035 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 314 flow [2023-08-27 13:03:38,036 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) [2023-08-27 13:03:38,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:03:38,036 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:03:38,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 13:03:38,036 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:03:38,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:03:38,036 INFO L85 PathProgramCache]: Analyzing trace with hash 545477600, now seen corresponding path program 1 times [2023-08-27 13:03:38,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:03:38,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576247395] [2023-08-27 13:03:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:03:38,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:03:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:03:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-27 13:03:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:03:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576247395] [2023-08-27 13:03:38,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576247395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:03:38,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:03:38,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:03:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578911873] [2023-08-27 13:03:38,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:03:38,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:03:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:03:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:03:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:03:38,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-27 13:03:38,123 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) [2023-08-27 13:03:38,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:03:38,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-27 13:03:38,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:03:48,520 INFO L124 PetriNetUnfolderBase]: 63208/85547 cut-off events. [2023-08-27 13:03:48,520 INFO L125 PetriNetUnfolderBase]: For 7361/7361 co-relation queries the response was YES. [2023-08-27 13:03:48,782 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. [2023-08-27 13:03:48,994 INFO L140 encePairwiseOnDemand]: 2168/2176 looper letters, 147 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2023-08-27 13:03:48,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 149 transitions, 781 flow [2023-08-27 13:03:48,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:03:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:03:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2722 transitions. [2023-08-27 13:03:49,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169730392156863 [2023-08-27 13:03:49,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2722 transitions. [2023-08-27 13:03:49,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2722 transitions. [2023-08-27 13:03:49,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:03:49,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2722 transitions. [2023-08-27 13:03:49,004 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) [2023-08-27 13:03:49,008 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) [2023-08-27 13:03:49,009 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) [2023-08-27 13:03:49,009 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 314 flow. Second operand 3 states and 2722 transitions. [2023-08-27 13:03:49,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 149 transitions, 781 flow [2023-08-27 13:03:49,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 149 transitions, 777 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:03:49,015 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 334 flow [2023-08-27 13:03:49,015 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} [2023-08-27 13:03:49,015 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -18 predicate places. [2023-08-27 13:03:49,016 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 334 flow [2023-08-27 13:03:49,016 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) [2023-08-27 13:03:49,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:03:49,016 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:03:49,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 13:03:49,017 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:03:49,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:03:49,017 INFO L85 PathProgramCache]: Analyzing trace with hash -270059252, now seen corresponding path program 1 times [2023-08-27 13:03:49,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:03:49,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500188862] [2023-08-27 13:03:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:03:49,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:03:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:03:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-27 13:03:49,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:03:49,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500188862] [2023-08-27 13:03:49,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500188862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:03:49,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:03:49,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:03:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18328372] [2023-08-27 13:03:49,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:03:49,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:03:49,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:03:49,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:03:49,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:03:49,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-27 13:03:49,135 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) [2023-08-27 13:03:49,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:03:49,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-27 13:03:49,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:03:57,964 INFO L124 PetriNetUnfolderBase]: 52808/71419 cut-off events. [2023-08-27 13:03:57,964 INFO L125 PetriNetUnfolderBase]: For 13290/13290 co-relation queries the response was YES. [2023-08-27 13:03:58,190 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. [2023-08-27 13:03:58,362 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 90 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-08-27 13:03:58,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 91 transitions, 508 flow [2023-08-27 13:03:58,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:03:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:03:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2661 transitions. [2023-08-27 13:03:58,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762867647058826 [2023-08-27 13:03:58,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2661 transitions. [2023-08-27 13:03:58,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2661 transitions. [2023-08-27 13:03:58,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:03:58,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2661 transitions. [2023-08-27 13:03:58,369 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) [2023-08-27 13:03:58,372 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) [2023-08-27 13:03:58,372 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) [2023-08-27 13:03:58,372 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 334 flow. Second operand 3 states and 2661 transitions. [2023-08-27 13:03:58,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 91 transitions, 508 flow [2023-08-27 13:03:58,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:03:58,401 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 326 flow [2023-08-27 13:03:58,401 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} [2023-08-27 13:03:58,401 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -19 predicate places. [2023-08-27 13:03:58,401 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 326 flow [2023-08-27 13:03:58,402 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) [2023-08-27 13:03:58,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:03:58,402 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:03:58,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 13:03:58,402 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-27 13:03:58,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:03:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash -270059338, now seen corresponding path program 1 times [2023-08-27 13:03:58,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:03:58,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212627212] [2023-08-27 13:03:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:03:58,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:03:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:03:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-27 13:03:58,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:03:58,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212627212] [2023-08-27 13:03:58,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212627212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:03:58,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:03:58,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:03:58,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960214956] [2023-08-27 13:03:58,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:03:58,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:03:58,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:03:58,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:03:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:03:58,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-27 13:03:58,510 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) [2023-08-27 13:03:58,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:03:58,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-27 13:03:58,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand