/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 23:45:33,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 23:45:33,646 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 23:45:33,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 23:45:33,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 23:45:33,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 23:45:33,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 23:45:33,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 23:45:33,678 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 23:45:33,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 23:45:33,681 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 23:45:33,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 23:45:33,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 23:45:33,682 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 23:45:33,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 23:45:33,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 23:45:33,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 23:45:33,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 23:45:33,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 23:45:33,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 23:45:33,684 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 23:45:33,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 23:45:33,684 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 23:45:33,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 23:45:33,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 23:45:33,685 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 23:45:33,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 23:45:33,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:45:33,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 23:45:33,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 23:45:33,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 23:45:33,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 23:45:33,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 23:45:33,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 23:45:33,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 23:45:33,687 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 23:45:33,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 23:45:33,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 23:45:33,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 23:45:33,963 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 23:45:33,964 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 23:45:33,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-08-26 23:45:34,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 23:45:35,087 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 23:45:35,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-08-26 23:45:35,092 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4afb6c85/43f60e3861ed4bf4aca9667674b7ced8/FLAGdb457734a [2023-08-26 23:45:35,101 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4afb6c85/43f60e3861ed4bf4aca9667674b7ced8 [2023-08-26 23:45:35,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 23:45:35,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 23:45:35,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 23:45:35,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 23:45:35,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 23:45:35,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92c4dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35, skipping insertion in model container [2023-08-26 23:45:35,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,124 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 23:45:35,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:45:35,283 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 23:45:35,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:45:35,344 INFO L206 MainTranslator]: Completed translation [2023-08-26 23:45:35,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35 WrapperNode [2023-08-26 23:45:35,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 23:45:35,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 23:45:35,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 23:45:35,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 23:45:35,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,420 INFO L138 Inliner]: procedures = 26, calls = 77, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 738 [2023-08-26 23:45:35,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 23:45:35,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 23:45:35,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 23:45:35,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 23:45:35,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 23:45:35,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 23:45:35,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 23:45:35,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 23:45:35,481 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (1/1) ... [2023-08-26 23:45:35,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:45:35,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:45:35,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 23:45:35,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 23:45:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 23:45:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 23:45:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 23:45:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 23:45:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 23:45:35,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 23:45:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 23:45:35,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 23:45:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 23:45:35,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 23:45:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 23:45:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 23:45:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 23:45:35,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 23:45:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 23:45:35,550 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 23:45:35,675 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 23:45:35,676 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 23:45:36,278 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 23:45:36,286 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 23:45:36,286 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-26 23:45:36,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:45:36 BoogieIcfgContainer [2023-08-26 23:45:36,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 23:45:36,289 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 23:45:36,289 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 23:45:36,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 23:45:36,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:45:35" (1/3) ... [2023-08-26 23:45:36,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324c3908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:45:36, skipping insertion in model container [2023-08-26 23:45:36,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:45:35" (2/3) ... [2023-08-26 23:45:36,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324c3908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:45:36, skipping insertion in model container [2023-08-26 23:45:36,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:45:36" (3/3) ... [2023-08-26 23:45:36,293 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2023-08-26 23:45:36,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 23:45:36,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2023-08-26 23:45:36,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 23:45:36,454 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 23:45:36,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 850 places, 931 transitions, 1886 flow [2023-08-26 23:45:36,843 INFO L124 PetriNetUnfolderBase]: 91/928 cut-off events. [2023-08-26 23:45:36,843 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:45:36,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 928 events. 91/928 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3783 event pairs, 0 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 685. Up to 2 conditions per place. [2023-08-26 23:45:36,866 INFO L82 GeneralOperation]: Start removeDead. Operand has 850 places, 931 transitions, 1886 flow [2023-08-26 23:45:36,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 836 places, 917 transitions, 1852 flow [2023-08-26 23:45:36,887 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 23:45:36,896 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 836 places, 917 transitions, 1852 flow [2023-08-26 23:45:36,899 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 836 places, 917 transitions, 1852 flow [2023-08-26 23:45:36,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 836 places, 917 transitions, 1852 flow [2023-08-26 23:45:37,114 INFO L124 PetriNetUnfolderBase]: 91/917 cut-off events. [2023-08-26 23:45:37,114 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:45:37,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 917 events. 91/917 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3778 event pairs, 0 based on Foata normal form. 0/766 useless extension candidates. Maximal degree in co-relation 685. Up to 2 conditions per place. [2023-08-26 23:45:37,188 INFO L119 LiptonReduction]: Number of co-enabled transitions 311688 [2023-08-26 23:46:19,331 INFO L134 LiptonReduction]: Checked pairs total: 311393 [2023-08-26 23:46:19,331 INFO L136 LiptonReduction]: Total number of compositions: 1245 [2023-08-26 23:46:19,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 23:46:19,344 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;@27392772, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 23:46:19,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2023-08-26 23:46:19,346 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 23:46:19,346 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 23:46:19,346 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:46:19,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:46:19,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 23:46:19,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:46:19,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:46:19,354 INFO L85 PathProgramCache]: Analyzing trace with hash 132701, now seen corresponding path program 1 times [2023-08-26 23:46:19,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:46:19,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992568480] [2023-08-26 23:46:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:46:19,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:46:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:46:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:46:19,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:46:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992568480] [2023-08-26 23:46:19,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992568480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:46:19,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:46:19,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:46:19,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870920298] [2023-08-26 23:46:19,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:46:19,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:46:19,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:46:19,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:46:19,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:46:19,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 863 out of 2176 [2023-08-26 23:46:19,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 863.6666666666666) internal successors, (2591), 3 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:19,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:46:19,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 863 of 2176 [2023-08-26 23:46:19,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:46:26,615 INFO L124 PetriNetUnfolderBase]: 51579/70344 cut-off events. [2023-08-26 23:46:26,616 INFO L125 PetriNetUnfolderBase]: For 1537/1537 co-relation queries the response was YES. [2023-08-26 23:46:26,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142296 conditions, 70344 events. 51579/70344 cut-off events. For 1537/1537 co-relation queries the response was YES. Maximal size of possible extension queue 2162. Compared 419817 event pairs, 43073 based on Foata normal form. 0/27082 useless extension candidates. Maximal degree in co-relation 137482. Up to 70340 conditions per place. [2023-08-26 23:46:26,997 INFO L140 encePairwiseOnDemand]: 2148/2176 looper letters, 94 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2023-08-26 23:46:26,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 101 transitions, 422 flow [2023-08-26 23:46:26,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:46:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:46:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2711 transitions. [2023-08-26 23:46:27,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152879901960784 [2023-08-26 23:46:27,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2711 transitions. [2023-08-26 23:46:27,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2711 transitions. [2023-08-26 23:46:27,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:46:27,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2711 transitions. [2023-08-26 23:46:27,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 903.6666666666666) internal successors, (2711), 3 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:27,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:27,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:27,043 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 238 flow. Second operand 3 states and 2711 transitions. [2023-08-26 23:46:27,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 101 transitions, 422 flow [2023-08-26 23:46:27,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 101 transitions, 410 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 23:46:27,069 INFO L231 Difference]: Finished difference. Result has 90 places, 101 transitions, 260 flow [2023-08-26 23:46:27,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=90, PETRI_TRANSITIONS=101} [2023-08-26 23:46:27,073 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -17 predicate places. [2023-08-26 23:46:27,073 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 101 transitions, 260 flow [2023-08-26 23:46:27,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 863.6666666666666) internal successors, (2591), 3 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:27,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:46:27,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:46:27,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 23:46:27,075 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:46:27,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:46:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash 4120093, now seen corresponding path program 1 times [2023-08-26 23:46:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:46:27,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914447731] [2023-08-26 23:46:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:46:27,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:46:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:46:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:46:27,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:46:27,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914447731] [2023-08-26 23:46:27,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914447731] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:46:27,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259702182] [2023-08-26 23:46:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:46:27,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:46:27,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:46:27,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:46:27,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 23:46:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:46:27,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:46:27,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:46:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:46:27,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:46:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:46:27,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259702182] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:46:27,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:46:27,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-26 23:46:27,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035323944] [2023-08-26 23:46:27,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:46:27,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:46:27,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:46:27,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:46:27,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:46:27,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 863 out of 2176 [2023-08-26 23:46:27,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 101 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 864.1428571428571) internal successors, (6049), 7 states have internal predecessors, (6049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:27,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:46:27,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 863 of 2176 [2023-08-26 23:46:27,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:46:34,733 INFO L124 PetriNetUnfolderBase]: 51597/70371 cut-off events. [2023-08-26 23:46:34,733 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2023-08-26 23:46:34,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141431 conditions, 70371 events. 51597/70371 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 2162. Compared 419370 event pairs, 43073 based on Foata normal form. 0/27101 useless extension candidates. Maximal degree in co-relation 141276. Up to 70340 conditions per place. [2023-08-26 23:46:35,097 INFO L140 encePairwiseOnDemand]: 2163/2176 looper letters, 91 selfloop transitions, 37 changer transitions 0/128 dead transitions. [2023-08-26 23:46:35,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 636 flow [2023-08-26 23:46:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:46:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:46:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6178 transitions. [2023-08-26 23:46:35,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405593487394958 [2023-08-26 23:46:35,110 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6178 transitions. [2023-08-26 23:46:35,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6178 transitions. [2023-08-26 23:46:35,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:46:35,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6178 transitions. [2023-08-26 23:46:35,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 882.5714285714286) internal successors, (6178), 7 states have internal predecessors, (6178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:35,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 2176.0) internal successors, (17408), 8 states have internal predecessors, (17408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:35,152 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 2176.0) internal successors, (17408), 8 states have internal predecessors, (17408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:35,153 INFO L175 Difference]: Start difference. First operand has 90 places, 101 transitions, 260 flow. Second operand 7 states and 6178 transitions. [2023-08-26 23:46:35,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 636 flow [2023-08-26 23:46:35,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 128 transitions, 610 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:46:35,161 INFO L231 Difference]: Finished difference. Result has 97 places, 128 transitions, 490 flow [2023-08-26 23:46:35,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=490, PETRI_PLACES=97, PETRI_TRANSITIONS=128} [2023-08-26 23:46:35,162 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -10 predicate places. [2023-08-26 23:46:35,162 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 128 transitions, 490 flow [2023-08-26 23:46:35,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 864.1428571428571) internal successors, (6049), 7 states have internal predecessors, (6049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:35,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:46:35,164 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-26 23:46:35,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 23:46:35,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:46:35,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:46:35,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:46:35,371 INFO L85 PathProgramCache]: Analyzing trace with hash 127726717, now seen corresponding path program 1 times [2023-08-26 23:46:35,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:46:35,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920417653] [2023-08-26 23:46:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:46:35,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:46:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:46:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:46:35,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:46:35,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920417653] [2023-08-26 23:46:35,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920417653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:46:35,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:46:35,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:46:35,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784937910] [2023-08-26 23:46:35,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:46:35,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:46:35,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:46:35,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:46:35,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:46:35,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 863 out of 2176 [2023-08-26 23:46:35,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 128 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 864.3333333333334) internal successors, (2593), 3 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:35,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:46:35,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 863 of 2176 [2023-08-26 23:46:35,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:46:42,571 INFO L124 PetriNetUnfolderBase]: 51588/70359 cut-off events. [2023-08-26 23:46:42,571 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2023-08-26 23:46:42,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141441 conditions, 70359 events. 51588/70359 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 2192. Compared 421041 event pairs, 43073 based on Foata normal form. 0/27103 useless extension candidates. Maximal degree in co-relation 141347. Up to 70331 conditions per place. [2023-08-26 23:46:42,885 INFO L140 encePairwiseOnDemand]: 2171/2176 looper letters, 110 selfloop transitions, 6 changer transitions 0/116 dead transitions. [2023-08-26 23:46:42,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 641 flow [2023-08-26 23:46:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:46:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:46:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2684 transitions. [2023-08-26 23:46:42,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111519607843137 [2023-08-26 23:46:42,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2684 transitions. [2023-08-26 23:46:42,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2684 transitions. [2023-08-26 23:46:42,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:46:42,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2684 transitions. [2023-08-26 23:46:42,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 894.6666666666666) internal successors, (2684), 3 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:42,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:42,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:42,914 INFO L175 Difference]: Start difference. First operand has 97 places, 128 transitions, 490 flow. Second operand 3 states and 2684 transitions. [2023-08-26 23:46:42,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 641 flow [2023-08-26 23:46:42,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 116 transitions, 604 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-26 23:46:42,918 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 384 flow [2023-08-26 23:46:42,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2023-08-26 23:46:42,919 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -13 predicate places. [2023-08-26 23:46:42,920 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 384 flow [2023-08-26 23:46:42,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 864.3333333333334) internal successors, (2593), 3 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:42,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:46:42,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 23:46:42,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 23:46:42,921 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:46:42,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:46:42,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1600780398, now seen corresponding path program 1 times [2023-08-26 23:46:42,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:46:42,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915111874] [2023-08-26 23:46:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:46:42,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:46:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:46:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:46:43,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:46:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915111874] [2023-08-26 23:46:43,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915111874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:46:43,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:46:43,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:46:43,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290394119] [2023-08-26 23:46:43,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:46:43,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:46:43,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:46:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:46:43,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:46:43,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 854 out of 2176 [2023-08-26 23:46:43,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 856.0) internal successors, (2568), 3 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:43,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:46:43,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 854 of 2176 [2023-08-26 23:46:43,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:46:49,679 INFO L124 PetriNetUnfolderBase]: 51585/70356 cut-off events. [2023-08-26 23:46:49,680 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-08-26 23:46:49,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141416 conditions, 70356 events. 51585/70356 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 2178. Compared 420397 event pairs, 43073 based on Foata normal form. 3/27107 useless extension candidates. Maximal degree in co-relation 141330. Up to 70348 conditions per place. [2023-08-26 23:46:50,170 INFO L140 encePairwiseOnDemand]: 2169/2176 looper letters, 101 selfloop transitions, 12 changer transitions 0/113 dead transitions. [2023-08-26 23:46:50,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 113 transitions, 595 flow [2023-08-26 23:46:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:46:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:46:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2660 transitions. [2023-08-26 23:46:50,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074754901960784 [2023-08-26 23:46:50,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2660 transitions. [2023-08-26 23:46:50,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2660 transitions. [2023-08-26 23:46:50,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:46:50,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2660 transitions. [2023-08-26 23:46:50,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 886.6666666666666) internal successors, (2660), 3 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:50,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:50,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:50,188 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 384 flow. Second operand 3 states and 2660 transitions. [2023-08-26 23:46:50,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 113 transitions, 595 flow [2023-08-26 23:46:50,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 113 transitions, 585 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:46:50,190 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 383 flow [2023-08-26 23:46:50,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=94, PETRI_TRANSITIONS=113} [2023-08-26 23:46:50,190 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -13 predicate places. [2023-08-26 23:46:50,191 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 383 flow [2023-08-26 23:46:50,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 856.0) internal successors, (2568), 3 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:50,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:46:50,191 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-26 23:46:50,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 23:46:50,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:46:50,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:46:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1808475412, now seen corresponding path program 2 times [2023-08-26 23:46:50,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:46:50,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319225091] [2023-08-26 23:46:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:46:50,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:46:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:46:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:46:50,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:46:50,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319225091] [2023-08-26 23:46:50,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319225091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:46:50,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152509606] [2023-08-26 23:46:50,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:46:50,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:46:50,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:46:50,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:46:50,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 23:46:50,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:46:50,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:46:50,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:46:50,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:46:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:46:50,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:46:50,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152509606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:46:50,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:46:50,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-26 23:46:50,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723000408] [2023-08-26 23:46:50,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:46:50,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:46:50,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:46:50,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:46:50,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:46:50,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 869 out of 2176 [2023-08-26 23:46:50,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 113 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 870.0) internal successors, (2610), 3 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:50,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:46:50,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 869 of 2176 [2023-08-26 23:46:50,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:46:56,930 INFO L124 PetriNetUnfolderBase]: 51585/70353 cut-off events. [2023-08-26 23:46:56,931 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2023-08-26 23:46:57,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141405 conditions, 70353 events. 51585/70353 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 2165. Compared 418683 event pairs, 43073 based on Foata normal form. 3/27104 useless extension candidates. Maximal degree in co-relation 141335. Up to 70353 conditions per place. [2023-08-26 23:46:57,225 INFO L140 encePairwiseOnDemand]: 2172/2176 looper letters, 109 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-08-26 23:46:57,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 110 transitions, 573 flow [2023-08-26 23:46:57,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:46:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:46:57,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2699 transitions. [2023-08-26 23:46:57,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134497549019608 [2023-08-26 23:46:57,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2699 transitions. [2023-08-26 23:46:57,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2699 transitions. [2023-08-26 23:46:57,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:46:57,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2699 transitions. [2023-08-26 23:46:57,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 899.6666666666666) internal successors, (2699), 3 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:57,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:57,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:57,241 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 383 flow. Second operand 3 states and 2699 transitions. [2023-08-26 23:46:57,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 110 transitions, 573 flow [2023-08-26 23:46:57,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 502 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-26 23:46:57,243 INFO L231 Difference]: Finished difference. Result has 87 places, 110 transitions, 284 flow [2023-08-26 23:46:57,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=87, PETRI_TRANSITIONS=110} [2023-08-26 23:46:57,244 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-26 23:46:57,244 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 110 transitions, 284 flow [2023-08-26 23:46:57,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 870.0) internal successors, (2610), 3 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:57,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:46:57,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:46:57,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 23:46:57,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:46:57,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:46:57,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:46:57,450 INFO L85 PathProgramCache]: Analyzing trace with hash -160107372, now seen corresponding path program 1 times [2023-08-26 23:46:57,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:46:57,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492359365] [2023-08-26 23:46:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:46:57,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:46:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:46:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:46:57,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:46:57,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492359365] [2023-08-26 23:46:57,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492359365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:46:57,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543088948] [2023-08-26 23:46:57,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:46:57,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:46:57,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:46:57,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:46:57,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 23:46:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:46:57,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:46:57,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:46:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:46:57,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:46:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:46:57,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543088948] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:46:57,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:46:57,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-26 23:46:57,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074298350] [2023-08-26 23:46:57,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:46:57,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 23:46:57,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:46:57,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 23:46:57,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:46:57,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 854 out of 2176 [2023-08-26 23:46:57,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 110 transitions, 284 flow. Second operand has 8 states, 8 states have (on average 855.875) internal successors, (6847), 8 states have internal predecessors, (6847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:46:57,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:46:57,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 854 of 2176 [2023-08-26 23:46:57,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:47:04,630 INFO L124 PetriNetUnfolderBase]: 51576/70344 cut-off events. [2023-08-26 23:47:04,630 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2023-08-26 23:47:04,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141338 conditions, 70344 events. 51576/70344 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 2181. Compared 420531 event pairs, 43073 based on Foata normal form. 0/27091 useless extension candidates. Maximal degree in co-relation 141330. Up to 70333 conditions per place. [2023-08-26 23:47:04,900 INFO L140 encePairwiseOnDemand]: 2169/2176 looper letters, 86 selfloop transitions, 15 changer transitions 0/101 dead transitions. [2023-08-26 23:47:04,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 450 flow [2023-08-26 23:47:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:47:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:47:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5234 transitions. [2023-08-26 23:47:04,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40088848039215685 [2023-08-26 23:47:04,908 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5234 transitions. [2023-08-26 23:47:04,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5234 transitions. [2023-08-26 23:47:04,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:47:04,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5234 transitions. [2023-08-26 23:47:04,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 872.3333333333334) internal successors, (5234), 6 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:04,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 2176.0) internal successors, (15232), 7 states have internal predecessors, (15232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:04,929 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 2176.0) internal successors, (15232), 7 states have internal predecessors, (15232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:04,930 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 284 flow. Second operand 6 states and 5234 transitions. [2023-08-26 23:47:04,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 450 flow [2023-08-26 23:47:04,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:47:04,931 INFO L231 Difference]: Finished difference. Result has 91 places, 101 transitions, 277 flow [2023-08-26 23:47:04,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=91, PETRI_TRANSITIONS=101} [2023-08-26 23:47:04,933 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -16 predicate places. [2023-08-26 23:47:04,933 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 277 flow [2023-08-26 23:47:04,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 855.875) internal successors, (6847), 8 states have internal predecessors, (6847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:04,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:47:04,935 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-26 23:47:04,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 23:47:05,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:47:05,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:47:05,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:47:05,142 INFO L85 PathProgramCache]: Analyzing trace with hash 225119058, now seen corresponding path program 1 times [2023-08-26 23:47:05,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:47:05,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122273739] [2023-08-26 23:47:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:05,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:47:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-26 23:47:05,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:47:05,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122273739] [2023-08-26 23:47:05,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122273739] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:47:05,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291787806] [2023-08-26 23:47:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:05,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:47:05,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:47:05,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:47:05,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 23:47:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:05,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 23:47:05,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:47:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-26 23:47:05,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:47:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-26 23:47:05,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291787806] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:47:05,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:47:05,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 23:47:05,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359544993] [2023-08-26 23:47:05,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:47:05,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 23:47:05,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:47:05,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 23:47:05,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-08-26 23:47:05,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 854 out of 2176 [2023-08-26 23:47:05,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 101 transitions, 277 flow. Second operand has 13 states, 13 states have (on average 855.5384615384615) internal successors, (11122), 13 states have internal predecessors, (11122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:05,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:47:05,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 854 of 2176 [2023-08-26 23:47:05,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:47:12,554 INFO L124 PetriNetUnfolderBase]: 51576/70347 cut-off events. [2023-08-26 23:47:12,554 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2023-08-26 23:47:12,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141362 conditions, 70347 events. 51576/70347 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 2175. Compared 422472 event pairs, 43073 based on Foata normal form. 2/27098 useless extension candidates. Maximal degree in co-relation 141353. Up to 70333 conditions per place. [2023-08-26 23:47:12,843 INFO L140 encePairwiseOnDemand]: 2169/2176 looper letters, 86 selfloop transitions, 18 changer transitions 0/104 dead transitions. [2023-08-26 23:47:12,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 497 flow [2023-08-26 23:47:12,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:47:12,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:47:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6085 transitions. [2023-08-26 23:47:12,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994879201680672 [2023-08-26 23:47:12,853 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6085 transitions. [2023-08-26 23:47:12,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6085 transitions. [2023-08-26 23:47:12,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:47:12,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6085 transitions. [2023-08-26 23:47:12,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 869.2857142857143) internal successors, (6085), 7 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:12,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 2176.0) internal successors, (17408), 8 states have internal predecessors, (17408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:12,871 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 2176.0) internal successors, (17408), 8 states have internal predecessors, (17408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:12,871 INFO L175 Difference]: Start difference. First operand has 91 places, 101 transitions, 277 flow. Second operand 7 states and 6085 transitions. [2023-08-26 23:47:12,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 497 flow [2023-08-26 23:47:12,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 104 transitions, 467 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 23:47:12,873 INFO L231 Difference]: Finished difference. Result has 93 places, 104 transitions, 309 flow [2023-08-26 23:47:12,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=93, PETRI_TRANSITIONS=104} [2023-08-26 23:47:12,873 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -14 predicate places. [2023-08-26 23:47:12,873 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 104 transitions, 309 flow [2023-08-26 23:47:12,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 855.5384615384615) internal successors, (11122), 13 states have internal predecessors, (11122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:12,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:47:12,875 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-26 23:47:12,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 23:47:13,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:47:13,080 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:47:13,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:47:13,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953325, now seen corresponding path program 2 times [2023-08-26 23:47:13,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:47:13,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232694366] [2023-08-26 23:47:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:13,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:47:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:47:13,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:47:13,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232694366] [2023-08-26 23:47:13,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232694366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:47:13,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:47:13,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:47:13,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876675748] [2023-08-26 23:47:13,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:47:13,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:47:13,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:47:13,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:47:13,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:47:13,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:47:13,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 104 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:13,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:47:13,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:47:13,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:47:19,517 INFO L124 PetriNetUnfolderBase]: 47688/64989 cut-off events. [2023-08-26 23:47:19,517 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2023-08-26 23:47:19,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130608 conditions, 64989 events. 47688/64989 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 2064. Compared 385781 event pairs, 39621 based on Foata normal form. 0/25532 useless extension candidates. Maximal degree in co-relation 130598. Up to 64989 conditions per place. [2023-08-26 23:47:19,907 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 101 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-08-26 23:47:19,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 102 transitions, 509 flow [2023-08-26 23:47:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:47:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:47:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2738 transitions. [2023-08-26 23:47:19,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41942401960784315 [2023-08-26 23:47:19,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2738 transitions. [2023-08-26 23:47:19,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2738 transitions. [2023-08-26 23:47:19,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:47:19,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2738 transitions. [2023-08-26 23:47:19,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 912.6666666666666) internal successors, (2738), 3 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:19,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:19,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:19,919 INFO L175 Difference]: Start difference. First operand has 93 places, 104 transitions, 309 flow. Second operand 3 states and 2738 transitions. [2023-08-26 23:47:19,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 102 transitions, 509 flow [2023-08-26 23:47:19,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 102 transitions, 479 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-26 23:47:19,921 INFO L231 Difference]: Finished difference. Result has 89 places, 102 transitions, 277 flow [2023-08-26 23:47:19,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=89, PETRI_TRANSITIONS=102} [2023-08-26 23:47:19,921 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -18 predicate places. [2023-08-26 23:47:19,921 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 102 transitions, 277 flow [2023-08-26 23:47:19,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:19,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:47:19,922 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-26 23:47:19,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 23:47:19,922 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:47:19,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:47:19,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953324, now seen corresponding path program 2 times [2023-08-26 23:47:19,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:47:19,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469979615] [2023-08-26 23:47:19,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:19,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:47:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:47:19,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:47:19,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469979615] [2023-08-26 23:47:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469979615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:47:19,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:47:19,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:47:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232898952] [2023-08-26 23:47:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:47:19,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:47:19,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:47:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:47:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:47:19,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:47:19,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 102 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:19,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:47:19,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:47:19,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:47:25,506 INFO L124 PetriNetUnfolderBase]: 42827/58330 cut-off events. [2023-08-26 23:47:25,506 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-08-26 23:47:25,589 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 1845. Compared 339665 event pairs, 35348 based on Foata normal form. 0/23331 useless extension candidates. Maximal degree in co-relation 117242. Up to 58330 conditions per place. [2023-08-26 23:47:25,730 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 99 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2023-08-26 23:47:25,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 100 transitions, 473 flow [2023-08-26 23:47:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:47:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:47:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2736 transitions. [2023-08-26 23:47:25,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911764705882354 [2023-08-26 23:47:25,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2736 transitions. [2023-08-26 23:47:25,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2736 transitions. [2023-08-26 23:47:25,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:47:25,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2736 transitions. [2023-08-26 23:47:25,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 912.0) internal successors, (2736), 3 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:25,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:25,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:25,741 INFO L175 Difference]: Start difference. First operand has 89 places, 102 transitions, 277 flow. Second operand 3 states and 2736 transitions. [2023-08-26 23:47:25,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 100 transitions, 473 flow [2023-08-26 23:47:25,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:47:25,742 INFO L231 Difference]: Finished difference. Result has 88 places, 100 transitions, 274 flow [2023-08-26 23:47:25,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=88, PETRI_TRANSITIONS=100} [2023-08-26 23:47:25,743 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -19 predicate places. [2023-08-26 23:47:25,743 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 100 transitions, 274 flow [2023-08-26 23:47:25,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:25,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:47:25,743 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-26 23:47:25,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 23:47:25,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:47:25,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:47:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953405, now seen corresponding path program 1 times [2023-08-26 23:47:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:47:25,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157823284] [2023-08-26 23:47:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:25,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:47:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:47:25,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:47:25,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157823284] [2023-08-26 23:47:25,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157823284] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:47:25,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:47:25,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:47:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594185741] [2023-08-26 23:47:25,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:47:25,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:47:25,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:47:25,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:47:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:47:25,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:47:25,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 100 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:25,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:47:25,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:47:25,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:47:31,153 INFO L124 PetriNetUnfolderBase]: 38208/52005 cut-off events. [2023-08-26 23:47:31,153 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2023-08-26 23:47:31,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104580 conditions, 52005 events. 38208/52005 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 1639. Compared 298113 event pairs, 31301 based on Foata normal form. 0/21212 useless extension candidates. Maximal degree in co-relation 104568. Up to 52005 conditions per place. [2023-08-26 23:47:31,407 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 97 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-08-26 23:47:31,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 98 transitions, 466 flow [2023-08-26 23:47:31,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:47:31,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:47:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2734 transitions. [2023-08-26 23:47:31,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41881127450980393 [2023-08-26 23:47:31,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2734 transitions. [2023-08-26 23:47:31,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2734 transitions. [2023-08-26 23:47:31,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:47:31,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2734 transitions. [2023-08-26 23:47:31,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 911.3333333333334) internal successors, (2734), 3 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:31,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:31,417 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:31,417 INFO L175 Difference]: Start difference. First operand has 88 places, 100 transitions, 274 flow. Second operand 3 states and 2734 transitions. [2023-08-26 23:47:31,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 98 transitions, 466 flow [2023-08-26 23:47:31,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 98 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:47:31,419 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 271 flow [2023-08-26 23:47:31,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=87, PETRI_TRANSITIONS=98} [2023-08-26 23:47:31,420 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-26 23:47:31,420 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 271 flow [2023-08-26 23:47:31,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:31,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:47:31,420 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-08-26 23:47:31,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 23:47:31,420 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:47:31,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:47:31,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1581953327, now seen corresponding path program 1 times [2023-08-26 23:47:31,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:47:31,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432983334] [2023-08-26 23:47:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:31,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:47:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:47:31,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:47:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432983334] [2023-08-26 23:47:31,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432983334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:47:31,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:47:31,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:47:31,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452474456] [2023-08-26 23:47:31,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:47:31,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:47:31,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:47:31,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:47:31,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:47:31,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:47:31,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:31,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:47:31,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:47:31,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:47:36,415 INFO L124 PetriNetUnfolderBase]: 35096/47723 cut-off events. [2023-08-26 23:47:36,416 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2023-08-26 23:47:36,477 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 1519. Compared 269048 event pairs, 28577 based on Foata normal form. 0/19896 useless extension candidates. Maximal degree in co-relation 95959. Up to 47723 conditions per place. [2023-08-26 23:47:36,581 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 95 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2023-08-26 23:47:36,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 459 flow [2023-08-26 23:47:36,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:47:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:47:36,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2732 transitions. [2023-08-26 23:47:36,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185049019607843 [2023-08-26 23:47:36,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2732 transitions. [2023-08-26 23:47:36,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2732 transitions. [2023-08-26 23:47:36,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:47:36,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2732 transitions. [2023-08-26 23:47:36,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 910.6666666666666) internal successors, (2732), 3 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:36,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:36,601 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:36,601 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 271 flow. Second operand 3 states and 2732 transitions. [2023-08-26 23:47:36,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 459 flow [2023-08-26 23:47:36,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 96 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:47:36,603 INFO L231 Difference]: Finished difference. Result has 86 places, 96 transitions, 268 flow [2023-08-26 23:47:36,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=86, PETRI_TRANSITIONS=96} [2023-08-26 23:47:36,603 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -21 predicate places. [2023-08-26 23:47:36,603 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 96 transitions, 268 flow [2023-08-26 23:47:36,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.0) internal successors, (2658), 3 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:36,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:47:36,604 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:47:36,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 23:47:36,604 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:47:36,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:47:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1795915633, now seen corresponding path program 1 times [2023-08-26 23:47:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:47:36,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145404060] [2023-08-26 23:47:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:47:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:47:36,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:47:36,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145404060] [2023-08-26 23:47:36,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145404060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:47:36,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:47:36,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:47:36,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707808304] [2023-08-26 23:47:36,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:47:36,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:47:36,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:47:36,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:47:36,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:47:36,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:47:36,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 96 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 886.3333333333334) internal successors, (2659), 3 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:36,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:47:36,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:47:36,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:47:41,163 INFO L124 PetriNetUnfolderBase]: 32116/43625 cut-off events. [2023-08-26 23:47:41,164 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 23:47:41,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87734 conditions, 43625 events. 32116/43625 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 242199 event pairs, 25977 based on Foata normal form. 0/18616 useless extension candidates. Maximal degree in co-relation 87720. Up to 43625 conditions per place. [2023-08-26 23:47:41,368 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 93 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-26 23:47:41,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 452 flow [2023-08-26 23:47:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:47:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:47:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2730 transitions. [2023-08-26 23:47:41,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181985294117647 [2023-08-26 23:47:41,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2730 transitions. [2023-08-26 23:47:41,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2730 transitions. [2023-08-26 23:47:41,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:47:41,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2730 transitions. [2023-08-26 23:47:41,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 910.0) internal successors, (2730), 3 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:41,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:41,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:41,378 INFO L175 Difference]: Start difference. First operand has 86 places, 96 transitions, 268 flow. Second operand 3 states and 2730 transitions. [2023-08-26 23:47:41,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 452 flow [2023-08-26 23:47:41,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 94 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:47:41,379 INFO L231 Difference]: Finished difference. Result has 85 places, 94 transitions, 265 flow [2023-08-26 23:47:41,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=85, PETRI_TRANSITIONS=94} [2023-08-26 23:47:41,381 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -22 predicate places. [2023-08-26 23:47:41,381 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 94 transitions, 265 flow [2023-08-26 23:47:41,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.3333333333334) internal successors, (2659), 3 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:41,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:47:41,381 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:47:41,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 23:47:41,381 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:47:41,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:47:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1795915635, now seen corresponding path program 1 times [2023-08-26 23:47:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:47:41,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639921807] [2023-08-26 23:47:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:41,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:47:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:47:41,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:47:41,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639921807] [2023-08-26 23:47:41,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639921807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:47:41,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:47:41,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:47:41,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104717215] [2023-08-26 23:47:41,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:47:41,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:47:41,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:47:41,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:47:41,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:47:41,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-26 23:47:41,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 94 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 865.3333333333334) internal successors, (2596), 3 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:41,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:47:41,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-26 23:47:41,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:47:48,076 INFO L124 PetriNetUnfolderBase]: 49020/66539 cut-off events. [2023-08-26 23:47:48,076 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 23:47:48,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133783 conditions, 66539 events. 49020/66539 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 383192 event pairs, 25977 based on Foata normal form. 0/30522 useless extension candidates. Maximal degree in co-relation 133768. Up to 43626 conditions per place. [2023-08-26 23:47:48,434 INFO L140 encePairwiseOnDemand]: 2165/2176 looper letters, 152 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-08-26 23:47:48,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 154 transitions, 698 flow [2023-08-26 23:47:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:47:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:47:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2734 transitions. [2023-08-26 23:47:48,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41881127450980393 [2023-08-26 23:47:48,438 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2734 transitions. [2023-08-26 23:47:48,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2734 transitions. [2023-08-26 23:47:48,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:47:48,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2734 transitions. [2023-08-26 23:47:48,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 911.3333333333334) internal successors, (2734), 3 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:48,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:48,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:48,443 INFO L175 Difference]: Start difference. First operand has 85 places, 94 transitions, 265 flow. Second operand 3 states and 2734 transitions. [2023-08-26 23:47:48,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 154 transitions, 698 flow [2023-08-26 23:47:48,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 154 transitions, 697 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:47:48,446 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 292 flow [2023-08-26 23:47:48,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=87, PETRI_TRANSITIONS=95} [2023-08-26 23:47:48,446 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-26 23:47:48,446 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 292 flow [2023-08-26 23:47:48,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 865.3333333333334) internal successors, (2596), 3 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:48,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:47:48,447 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:47:48,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 23:47:48,447 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:47:48,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:47:48,447 INFO L85 PathProgramCache]: Analyzing trace with hash 161056403, now seen corresponding path program 1 times [2023-08-26 23:47:48,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:47:48,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655987999] [2023-08-26 23:47:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:48,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:47:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:47:48,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:47:48,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655987999] [2023-08-26 23:47:48,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655987999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:47:48,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:47:48,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:47:48,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427356909] [2023-08-26 23:47:48,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:47:48,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:47:48,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:47:48,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:47:48,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:47:48,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:47:48,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 886.6666666666666) internal successors, (2660), 3 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:48,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:47:48,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:47:48,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:47:54,729 INFO L124 PetriNetUnfolderBase]: 43254/58661 cut-off events. [2023-08-26 23:47:54,729 INFO L125 PetriNetUnfolderBase]: For 2850/2850 co-relation queries the response was YES. [2023-08-26 23:47:54,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124264 conditions, 58661 events. 43254/58661 cut-off events. For 2850/2850 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 327866 event pairs, 34735 based on Foata normal form. 0/29340 useless extension candidates. Maximal degree in co-relation 124248. Up to 58661 conditions per place. [2023-08-26 23:47:55,009 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 92 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-08-26 23:47:55,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 474 flow [2023-08-26 23:47:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:47:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:47:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2728 transitions. [2023-08-26 23:47:55,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4178921568627451 [2023-08-26 23:47:55,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2728 transitions. [2023-08-26 23:47:55,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2728 transitions. [2023-08-26 23:47:55,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:47:55,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2728 transitions. [2023-08-26 23:47:55,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 909.3333333333334) internal successors, (2728), 3 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:55,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:55,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:55,018 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 292 flow. Second operand 3 states and 2728 transitions. [2023-08-26 23:47:55,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 474 flow [2023-08-26 23:47:55,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:47:55,028 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 288 flow [2023-08-26 23:47:55,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=86, PETRI_TRANSITIONS=93} [2023-08-26 23:47:55,028 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -21 predicate places. [2023-08-26 23:47:55,028 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 288 flow [2023-08-26 23:47:55,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.6666666666666) internal successors, (2660), 3 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:55,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:47:55,029 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:47:55,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 23:47:55,029 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:47:55,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:47:55,029 INFO L85 PathProgramCache]: Analyzing trace with hash 161056319, now seen corresponding path program 1 times [2023-08-26 23:47:55,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:47:55,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785734871] [2023-08-26 23:47:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:47:55,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:47:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:47:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:47:55,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:47:55,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785734871] [2023-08-26 23:47:55,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785734871] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:47:55,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:47:55,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:47:55,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214519748] [2023-08-26 23:47:55,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:47:55,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:47:55,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:47:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:47:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:47:55,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:47:55,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 886.6666666666666) internal successors, (2660), 3 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:47:55,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:47:55,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:47:55,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:48:00,554 INFO L124 PetriNetUnfolderBase]: 37824/51247 cut-off events. [2023-08-26 23:48:00,555 INFO L125 PetriNetUnfolderBase]: For 1685/1685 co-relation queries the response was YES. [2023-08-26 23:48:00,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108181 conditions, 51247 events. 37824/51247 cut-off events. For 1685/1685 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 280352 event pairs, 30061 based on Foata normal form. 0/26126 useless extension candidates. Maximal degree in co-relation 108164. Up to 51247 conditions per place. [2023-08-26 23:48:00,856 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 90 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-08-26 23:48:00,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 466 flow [2023-08-26 23:48:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:48:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:48:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2726 transitions. [2023-08-26 23:48:00,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175857843137255 [2023-08-26 23:48:00,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2726 transitions. [2023-08-26 23:48:00,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2726 transitions. [2023-08-26 23:48:00,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:48:00,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2726 transitions. [2023-08-26 23:48:00,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 908.6666666666666) internal successors, (2726), 3 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:00,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:00,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:00,866 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 288 flow. Second operand 3 states and 2726 transitions. [2023-08-26 23:48:00,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 466 flow [2023-08-26 23:48:00,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 91 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:48:00,869 INFO L231 Difference]: Finished difference. Result has 85 places, 91 transitions, 285 flow [2023-08-26 23:48:00,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=85, PETRI_TRANSITIONS=91} [2023-08-26 23:48:00,869 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -22 predicate places. [2023-08-26 23:48:00,869 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 91 transitions, 285 flow [2023-08-26 23:48:00,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 886.6666666666666) internal successors, (2660), 3 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:00,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:48:00,870 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:48:00,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 23:48:00,870 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:48:00,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:48:00,870 INFO L85 PathProgramCache]: Analyzing trace with hash 697779531, now seen corresponding path program 1 times [2023-08-26 23:48:00,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:48:00,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976495210] [2023-08-26 23:48:00,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:48:00,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:48:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:48:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:48:00,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:48:00,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976495210] [2023-08-26 23:48:00,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976495210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:48:00,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:48:00,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:48:00,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848513840] [2023-08-26 23:48:00,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:48:00,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:48:00,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:48:00,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:48:00,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:48:00,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:48:00,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 91 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 887.0) internal successors, (2661), 3 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:00,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:48:00,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:48:00,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:48:05,880 INFO L124 PetriNetUnfolderBase]: 32730/44297 cut-off events. [2023-08-26 23:48:05,880 INFO L125 PetriNetUnfolderBase]: For 1491/1491 co-relation queries the response was YES. [2023-08-26 23:48:06,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93556 conditions, 44297 events. 32730/44297 cut-off events. For 1491/1491 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 237154 event pairs, 25699 based on Foata normal form. 0/23072 useless extension candidates. Maximal degree in co-relation 93538. Up to 44297 conditions per place. [2023-08-26 23:48:06,106 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-26 23:48:06,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 459 flow [2023-08-26 23:48:06,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:48:06,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:48:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2724 transitions. [2023-08-26 23:48:06,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172794117647059 [2023-08-26 23:48:06,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2724 transitions. [2023-08-26 23:48:06,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2724 transitions. [2023-08-26 23:48:06,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:48:06,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2724 transitions. [2023-08-26 23:48:06,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 908.0) internal successors, (2724), 3 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:06,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:06,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:06,138 INFO L175 Difference]: Start difference. First operand has 85 places, 91 transitions, 285 flow. Second operand 3 states and 2724 transitions. [2023-08-26 23:48:06,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 459 flow [2023-08-26 23:48:06,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 89 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:48:06,141 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 282 flow [2023-08-26 23:48:06,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2023-08-26 23:48:06,141 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -23 predicate places. [2023-08-26 23:48:06,141 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 282 flow [2023-08-26 23:48:06,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 887.0) internal successors, (2661), 3 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:06,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:48:06,142 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:48:06,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 23:48:06,142 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:48:06,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:48:06,143 INFO L85 PathProgramCache]: Analyzing trace with hash 697779607, now seen corresponding path program 1 times [2023-08-26 23:48:06,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:48:06,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781818591] [2023-08-26 23:48:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:48:06,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:48:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:48:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:48:06,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:48:06,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781818591] [2023-08-26 23:48:06,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781818591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:48:06,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:48:06,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:48:06,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123159986] [2023-08-26 23:48:06,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:48:06,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:48:06,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:48:06,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:48:06,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:48:06,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-26 23:48:06,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 866.0) internal successors, (2598), 3 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:06,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:48:06,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-26 23:48:06,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:48:13,687 INFO L124 PetriNetUnfolderBase]: 49396/66727 cut-off events. [2023-08-26 23:48:13,687 INFO L125 PetriNetUnfolderBase]: For 3421/3421 co-relation queries the response was YES. [2023-08-26 23:48:13,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140847 conditions, 66727 events. 49396/66727 cut-off events. For 3421/3421 co-relation queries the response was YES. Maximal size of possible extension queue 1162. Compared 369927 event pairs, 25699 based on Foata normal form. 0/36794 useless extension candidates. Maximal degree in co-relation 140828. Up to 44298 conditions per place. [2023-08-26 23:48:14,221 INFO L140 encePairwiseOnDemand]: 2166/2176 looper letters, 141 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-08-26 23:48:14,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 143 transitions, 704 flow [2023-08-26 23:48:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:48:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:48:14,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2720 transitions. [2023-08-26 23:48:14,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-26 23:48:14,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2720 transitions. [2023-08-26 23:48:14,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2720 transitions. [2023-08-26 23:48:14,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:48:14,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2720 transitions. [2023-08-26 23:48:14,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 906.6666666666666) internal successors, (2720), 3 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:14,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:14,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:14,230 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 282 flow. Second operand 3 states and 2720 transitions. [2023-08-26 23:48:14,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 143 transitions, 704 flow [2023-08-26 23:48:14,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 143 transitions, 703 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:48:14,233 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 307 flow [2023-08-26 23:48:14,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2023-08-26 23:48:14,234 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -21 predicate places. [2023-08-26 23:48:14,234 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 307 flow [2023-08-26 23:48:14,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 866.0) internal successors, (2598), 3 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:14,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:48:14,234 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:48:14,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 23:48:14,235 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:48:14,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:48:14,235 INFO L85 PathProgramCache]: Analyzing trace with hash 545477600, now seen corresponding path program 1 times [2023-08-26 23:48:14,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:48:14,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071232423] [2023-08-26 23:48:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:48:14,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:48:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:48:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:48:14,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:48:14,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071232423] [2023-08-26 23:48:14,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071232423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:48:14,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:48:14,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:48:14,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047369108] [2023-08-26 23:48:14,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:48:14,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:48:14,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:48:14,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:48:14,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:48:14,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-26 23:48:14,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 866.6666666666666) internal successors, (2600), 3 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:14,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:48:14,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-26 23:48:14,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:48:23,944 INFO L124 PetriNetUnfolderBase]: 59124/79935 cut-off events. [2023-08-26 23:48:23,944 INFO L125 PetriNetUnfolderBase]: For 7029/7029 co-relation queries the response was YES. [2023-08-26 23:48:24,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177728 conditions, 79935 events. 59124/79935 cut-off events. For 7029/7029 co-relation queries the response was YES. Maximal size of possible extension queue 1402. Compared 457180 event pairs, 38853 based on Foata normal form. 0/47342 useless extension candidates. Maximal degree in co-relation 177708. Up to 66728 conditions per place. [2023-08-26 23:48:24,386 INFO L140 encePairwiseOnDemand]: 2168/2176 looper letters, 143 selfloop transitions, 2 changer transitions 0/145 dead transitions. [2023-08-26 23:48:24,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 145 transitions, 758 flow [2023-08-26 23:48:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:48:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:48:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2718 transitions. [2023-08-26 23:48:24,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163602941176471 [2023-08-26 23:48:24,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2718 transitions. [2023-08-26 23:48:24,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2718 transitions. [2023-08-26 23:48:24,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:48:24,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2718 transitions. [2023-08-26 23:48:24,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 906.0) internal successors, (2718), 3 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:24,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:24,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:24,395 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 307 flow. Second operand 3 states and 2718 transitions. [2023-08-26 23:48:24,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 145 transitions, 758 flow [2023-08-26 23:48:24,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 145 transitions, 754 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:48:24,407 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 327 flow [2023-08-26 23:48:24,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2023-08-26 23:48:24,408 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -19 predicate places. [2023-08-26 23:48:24,408 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 327 flow [2023-08-26 23:48:24,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 866.6666666666666) internal successors, (2600), 3 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:24,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:48:24,408 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:48:24,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 23:48:24,408 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:48:24,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:48:24,409 INFO L85 PathProgramCache]: Analyzing trace with hash -270059252, now seen corresponding path program 1 times [2023-08-26 23:48:24,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:48:24,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960579621] [2023-08-26 23:48:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:48:24,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:48:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:48:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:48:24,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:48:24,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960579621] [2023-08-26 23:48:24,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960579621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:48:24,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:48:24,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:48:24,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767677987] [2023-08-26 23:48:24,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:48:24,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:48:24,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:48:24,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:48:24,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:48:24,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-26 23:48:24,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 867.0) internal successors, (2601), 3 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:24,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:48:24,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-26 23:48:24,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:48:32,619 INFO L124 PetriNetUnfolderBase]: 49396/66735 cut-off events. [2023-08-26 23:48:32,619 INFO L125 PetriNetUnfolderBase]: For 12374/12374 co-relation queries the response was YES. [2023-08-26 23:48:32,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161749 conditions, 66735 events. 49396/66735 cut-off events. For 12374/12374 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 367379 event pairs, 38853 based on Foata normal form. 0/45654 useless extension candidates. Maximal degree in co-relation 161728. Up to 66735 conditions per place. [2023-08-26 23:48:33,034 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-26 23:48:33,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 497 flow [2023-08-26 23:48:33,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:48:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:48:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2659 transitions. [2023-08-26 23:48:33,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40732230392156865 [2023-08-26 23:48:33,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2659 transitions. [2023-08-26 23:48:33,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2659 transitions. [2023-08-26 23:48:33,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:48:33,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2659 transitions. [2023-08-26 23:48:33,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 886.3333333333334) internal successors, (2659), 3 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:33,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:33,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:33,064 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 327 flow. Second operand 3 states and 2659 transitions. [2023-08-26 23:48:33,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 497 flow [2023-08-26 23:48:33,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 495 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:48:33,096 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 319 flow [2023-08-26 23:48:33,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2023-08-26 23:48:33,096 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -20 predicate places. [2023-08-26 23:48:33,096 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 319 flow [2023-08-26 23:48:33,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 867.0) internal successors, (2601), 3 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:33,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:48:33,097 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:48:33,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 23:48:33,097 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:48:33,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:48:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash -270059338, now seen corresponding path program 1 times [2023-08-26 23:48:33,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:48:33,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790481722] [2023-08-26 23:48:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:48:33,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:48:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:48:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-26 23:48:33,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:48:33,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790481722] [2023-08-26 23:48:33,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790481722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:48:33,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:48:33,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:48:33,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116964523] [2023-08-26 23:48:33,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:48:33,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:48:33,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:48:33,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:48:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:48:33,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 883 out of 2176 [2023-08-26 23:48:33,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 888.0) internal successors, (2664), 3 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:33,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:48:33,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 883 of 2176 [2023-08-26 23:48:33,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:48:40,403 INFO L124 PetriNetUnfolderBase]: 42994/58025 cut-off events. [2023-08-26 23:48:40,403 INFO L125 PetriNetUnfolderBase]: For 8250/8250 co-relation queries the response was YES. [2023-08-26 23:48:40,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138304 conditions, 58025 events. 42994/58025 cut-off events. For 8250/8250 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 312553 event pairs, 33395 based on Foata normal form. 0/41076 useless extension candidates. Maximal degree in co-relation 138282. Up to 58025 conditions per place. [2023-08-26 23:48:40,930 INFO L140 encePairwiseOnDemand]: 2173/2176 looper letters, 86 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-08-26 23:48:40,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 485 flow [2023-08-26 23:48:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:48:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:48:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2720 transitions. [2023-08-26 23:48:40,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-26 23:48:40,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2720 transitions. [2023-08-26 23:48:40,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2720 transitions. [2023-08-26 23:48:40,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:48:40,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2720 transitions. [2023-08-26 23:48:40,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 906.6666666666666) internal successors, (2720), 3 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:40,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:40,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2176.0) internal successors, (8704), 4 states have internal predecessors, (8704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:40,937 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 319 flow. Second operand 3 states and 2720 transitions. [2023-08-26 23:48:40,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 485 flow [2023-08-26 23:48:40,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 87 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:48:40,950 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 312 flow [2023-08-26 23:48:40,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2176, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2023-08-26 23:48:40,951 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -21 predicate places. [2023-08-26 23:48:40,951 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 312 flow [2023-08-26 23:48:40,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 888.0) internal successors, (2664), 3 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:40,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:48:40,951 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:48:40,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 23:48:40,951 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 115 more)] === [2023-08-26 23:48:40,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:48:40,952 INFO L85 PathProgramCache]: Analyzing trace with hash -270059260, now seen corresponding path program 1 times [2023-08-26 23:48:40,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:48:40,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769753828] [2023-08-26 23:48:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:48:40,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:48:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:48:41,042 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:48:41,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:48:41,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769753828] [2023-08-26 23:48:41,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769753828] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:48:41,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549265136] [2023-08-26 23:48:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:48:41,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:48:41,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:48:41,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:48:41,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 23:48:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:48:41,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 23:48:41,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:48:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:48:41,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:48:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 23:48:41,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549265136] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:48:41,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:48:41,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 23:48:41,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139919829] [2023-08-26 23:48:41,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:48:41,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:48:41,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:48:41,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:48:41,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:48:41,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 2176 [2023-08-26 23:48:41,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 312 flow. Second operand has 7 states, 7 states have (on average 864.8571428571429) internal successors, (6054), 7 states have internal predecessors, (6054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:48:41,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:48:41,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 2176 [2023-08-26 23:48:41,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand