/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 08:47:10,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 08:47:10,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 08:47:10,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 08:47:10,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 08:47:10,271 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 08:47:10,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 08:47:10,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 08:47:10,272 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 08:47:10,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 08:47:10,275 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 08:47:10,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 08:47:10,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 08:47:10,276 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 08:47:10,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 08:47:10,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 08:47:10,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 08:47:10,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 08:47:10,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 08:47:10,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 08:47:10,277 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 08:47:10,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 08:47:10,278 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 08:47:10,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 08:47:10,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 08:47:10,279 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 08:47:10,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 08:47:10,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:47:10,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 08:47:10,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 08:47:10,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 08:47:10,280 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 08:47:10,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 08:47:10,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 08:47:10,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 08:47:10,281 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 08:47:10,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 08:47:10,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 08:47:10,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 08:47:10,506 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 08:47:10,506 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 08:47:10,507 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-27 08:47:11,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 08:47:11,568 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 08:47:11,568 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-27 08:47:11,573 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9e6fb202/dd11ba16f9bf41a39971453e8f3927ba/FLAG642d9cbca [2023-08-27 08:47:11,581 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9e6fb202/dd11ba16f9bf41a39971453e8f3927ba [2023-08-27 08:47:11,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 08:47:11,583 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 08:47:11,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 08:47:11,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 08:47:11,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 08:47:11,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191d6abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11, skipping insertion in model container [2023-08-27 08:47:11,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,600 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 08:47:11,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:47:11,703 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 08:47:11,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:47:11,739 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:47:11,739 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:47:11,743 INFO L206 MainTranslator]: Completed translation [2023-08-27 08:47:11,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11 WrapperNode [2023-08-27 08:47:11,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 08:47:11,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 08:47:11,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 08:47:11,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 08:47:11,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,781 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 133 [2023-08-27 08:47:11,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 08:47:11,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 08:47:11,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 08:47:11,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 08:47:11,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 08:47:11,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 08:47:11,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 08:47:11,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 08:47:11,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (1/1) ... [2023-08-27 08:47:11,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:47:11,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:11,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 08:47:11,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 08:47:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 08:47:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 08:47:11,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 08:47:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 08:47:11,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 08:47:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 08:47:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 08:47:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 08:47:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 08:47:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 08:47:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 08:47:11,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 08:47:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 08:47:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 08:47:11,861 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 08:47:11,946 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 08:47:11,947 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 08:47:12,149 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 08:47:12,200 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 08:47:12,200 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 08:47:12,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:47:12 BoogieIcfgContainer [2023-08-27 08:47:12,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 08:47:12,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 08:47:12,209 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 08:47:12,211 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 08:47:12,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 08:47:11" (1/3) ... [2023-08-27 08:47:12,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d52d112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:47:12, skipping insertion in model container [2023-08-27 08:47:12,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:11" (2/3) ... [2023-08-27 08:47:12,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d52d112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:47:12, skipping insertion in model container [2023-08-27 08:47:12,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:47:12" (3/3) ... [2023-08-27 08:47:12,213 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-08-27 08:47:12,224 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 08:47:12,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 08:47:12,225 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 08:47:12,286 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 08:47:12,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 87 transitions, 190 flow [2023-08-27 08:47:12,345 INFO L124 PetriNetUnfolderBase]: 1/85 cut-off events. [2023-08-27 08:47:12,345 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 08:47:12,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 1/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-27 08:47:12,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 87 transitions, 190 flow [2023-08-27 08:47:12,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 76 transitions, 164 flow [2023-08-27 08:47:12,355 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 08:47:12,365 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 76 transitions, 164 flow [2023-08-27 08:47:12,370 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 76 transitions, 164 flow [2023-08-27 08:47:12,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 76 transitions, 164 flow [2023-08-27 08:47:12,399 INFO L124 PetriNetUnfolderBase]: 1/76 cut-off events. [2023-08-27 08:47:12,399 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 08:47:12,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 1/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-08-27 08:47:12,401 INFO L119 LiptonReduction]: Number of co-enabled transitions 900 [2023-08-27 08:47:13,824 INFO L134 LiptonReduction]: Checked pairs total: 5750 [2023-08-27 08:47:13,824 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-08-27 08:47:13,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 08:47:13,838 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;@4cc33a5d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 08:47:13,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 08:47:13,840 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 08:47:13,840 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-27 08:47:13,840 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 08:47:13,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:13,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 08:47:13,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:13,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:13,844 INFO L85 PathProgramCache]: Analyzing trace with hash 11639393, now seen corresponding path program 1 times [2023-08-27 08:47:13,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:13,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61555042] [2023-08-27 08:47:13,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:13,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:13,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:13,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61555042] [2023-08-27 08:47:13,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61555042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:13,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:13,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:47:13,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133363655] [2023-08-27 08:47:13,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:13,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:47:13,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:13,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:47:13,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:47:13,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 08:47:13,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:13,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:13,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 08:47:14,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:14,107 INFO L124 PetriNetUnfolderBase]: 301/615 cut-off events. [2023-08-27 08:47:14,107 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 08:47:14,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 615 events. 301/615 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3136 event pairs, 127 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 1095. Up to 339 conditions per place. [2023-08-27 08:47:14,114 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 36 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-27 08:47:14,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 185 flow [2023-08-27 08:47:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:47:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:47:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-27 08:47:14,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2023-08-27 08:47:14,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-27 08:47:14,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-27 08:47:14,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:14,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-27 08:47:14,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,135 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 82 flow. Second operand 3 states and 239 transitions. [2023-08-27 08:47:14,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 185 flow [2023-08-27 08:47:14,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 175 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 08:47:14,138 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 87 flow [2023-08-27 08:47:14,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-08-27 08:47:14,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-27 08:47:14,142 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 87 flow [2023-08-27 08:47:14,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:14,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 08:47:14,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 08:47:14,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:14,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:14,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1697047311, now seen corresponding path program 1 times [2023-08-27 08:47:14,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:14,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658055239] [2023-08-27 08:47:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:14,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:14,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:14,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658055239] [2023-08-27 08:47:14,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658055239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:14,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:14,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:47:14,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11785372] [2023-08-27 08:47:14,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:14,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:47:14,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:14,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:47:14,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:47:14,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 08:47:14,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:14,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 08:47:14,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:14,264 INFO L124 PetriNetUnfolderBase]: 281/582 cut-off events. [2023-08-27 08:47:14,264 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-08-27 08:47:14,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 582 events. 281/582 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3030 event pairs, 107 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 396. Up to 339 conditions per place. [2023-08-27 08:47:14,267 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 36 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-27 08:47:14,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 194 flow [2023-08-27 08:47:14,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:47:14,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:47:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-27 08:47:14,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2023-08-27 08:47:14,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-27 08:47:14,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-27 08:47:14,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:14,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-27 08:47:14,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,271 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 87 flow. Second operand 3 states and 239 transitions. [2023-08-27 08:47:14,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 194 flow [2023-08-27 08:47:14,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:47:14,272 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 94 flow [2023-08-27 08:47:14,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-27 08:47:14,273 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-27 08:47:14,273 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 94 flow [2023-08-27 08:47:14,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:14,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:14,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 08:47:14,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:14,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:14,274 INFO L85 PathProgramCache]: Analyzing trace with hash -677361917, now seen corresponding path program 1 times [2023-08-27 08:47:14,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:14,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831415248] [2023-08-27 08:47:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:14,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:14,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:14,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831415248] [2023-08-27 08:47:14,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831415248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:14,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:14,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 08:47:14,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50125296] [2023-08-27 08:47:14,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:14,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:47:14,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:14,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:47:14,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:47:14,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 08:47:14,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:14,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 08:47:14,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:14,469 INFO L124 PetriNetUnfolderBase]: 441/895 cut-off events. [2023-08-27 08:47:14,470 INFO L125 PetriNetUnfolderBase]: For 132/133 co-relation queries the response was YES. [2023-08-27 08:47:14,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 895 events. 441/895 cut-off events. For 132/133 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4901 event pairs, 95 based on Foata normal form. 0/802 useless extension candidates. Maximal degree in co-relation 465. Up to 270 conditions per place. [2023-08-27 08:47:14,473 INFO L140 encePairwiseOnDemand]: 132/141 looper letters, 63 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-08-27 08:47:14,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 81 transitions, 358 flow [2023-08-27 08:47:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:47:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:47:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2023-08-27 08:47:14,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096251266464032 [2023-08-27 08:47:14,476 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2023-08-27 08:47:14,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2023-08-27 08:47:14,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:14,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2023-08-27 08:47:14,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,479 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,479 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 94 flow. Second operand 7 states and 503 transitions. [2023-08-27 08:47:14,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 81 transitions, 358 flow [2023-08-27 08:47:14,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:47:14,481 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 159 flow [2023-08-27 08:47:14,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-27 08:47:14,482 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-27 08:47:14,482 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 159 flow [2023-08-27 08:47:14,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:14,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:14,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 08:47:14,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:14,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:14,483 INFO L85 PathProgramCache]: Analyzing trace with hash -404899936, now seen corresponding path program 1 times [2023-08-27 08:47:14,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:14,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084262947] [2023-08-27 08:47:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:14,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:14,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:14,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084262947] [2023-08-27 08:47:14,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084262947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:14,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:14,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 08:47:14,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281499942] [2023-08-27 08:47:14,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:14,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:47:14,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:14,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:47:14,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:47:14,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 08:47:14,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:14,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 08:47:14,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:14,655 INFO L124 PetriNetUnfolderBase]: 424/864 cut-off events. [2023-08-27 08:47:14,655 INFO L125 PetriNetUnfolderBase]: For 487/488 co-relation queries the response was YES. [2023-08-27 08:47:14,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 864 events. 424/864 cut-off events. For 487/488 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4655 event pairs, 24 based on Foata normal form. 13/789 useless extension candidates. Maximal degree in co-relation 1726. Up to 303 conditions per place. [2023-08-27 08:47:14,658 INFO L140 encePairwiseOnDemand]: 132/141 looper letters, 65 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2023-08-27 08:47:14,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 85 transitions, 426 flow [2023-08-27 08:47:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:47:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:47:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 506 transitions. [2023-08-27 08:47:14,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126646403242148 [2023-08-27 08:47:14,660 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 506 transitions. [2023-08-27 08:47:14,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 506 transitions. [2023-08-27 08:47:14,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:14,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 506 transitions. [2023-08-27 08:47:14,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,664 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 159 flow. Second operand 7 states and 506 transitions. [2023-08-27 08:47:14,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 85 transitions, 426 flow [2023-08-27 08:47:14,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 85 transitions, 401 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 08:47:14,670 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 184 flow [2023-08-27 08:47:14,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2023-08-27 08:47:14,671 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-27 08:47:14,671 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 184 flow [2023-08-27 08:47:14,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:14,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:14,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 08:47:14,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:14,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1840568342, now seen corresponding path program 1 times [2023-08-27 08:47:14,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:14,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453876666] [2023-08-27 08:47:14,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:14,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:14,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:14,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453876666] [2023-08-27 08:47:14,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453876666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:14,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:14,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 08:47:14,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758165576] [2023-08-27 08:47:14,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:14,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:47:14,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:14,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:47:14,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:47:14,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 08:47:14,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:14,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 08:47:14,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:14,886 INFO L124 PetriNetUnfolderBase]: 559/1147 cut-off events. [2023-08-27 08:47:14,886 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2023-08-27 08:47:14,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 1147 events. 559/1147 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6698 event pairs, 67 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 2124. Up to 348 conditions per place. [2023-08-27 08:47:14,891 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 64 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2023-08-27 08:47:14,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 462 flow [2023-08-27 08:47:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:47:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:47:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2023-08-27 08:47:14,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096251266464032 [2023-08-27 08:47:14,892 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2023-08-27 08:47:14,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2023-08-27 08:47:14,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:14,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2023-08-27 08:47:14,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,895 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 184 flow. Second operand 7 states and 503 transitions. [2023-08-27 08:47:14,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 462 flow [2023-08-27 08:47:14,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 408 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-27 08:47:14,899 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 240 flow [2023-08-27 08:47:14,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-27 08:47:14,900 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-08-27 08:47:14,900 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 240 flow [2023-08-27 08:47:14,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:14,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:14,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 08:47:14,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:14,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:14,901 INFO L85 PathProgramCache]: Analyzing trace with hash -676868069, now seen corresponding path program 1 times [2023-08-27 08:47:14,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:14,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146848757] [2023-08-27 08:47:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:14,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:14,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:14,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146848757] [2023-08-27 08:47:14,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146848757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:14,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:14,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 08:47:14,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723844230] [2023-08-27 08:47:14,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:14,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:47:14,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:14,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:47:14,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:47:14,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 08:47:14,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:14,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:14,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 08:47:14,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:15,059 INFO L124 PetriNetUnfolderBase]: 542/1108 cut-off events. [2023-08-27 08:47:15,059 INFO L125 PetriNetUnfolderBase]: For 727/729 co-relation queries the response was YES. [2023-08-27 08:47:15,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2722 conditions, 1108 events. 542/1108 cut-off events. For 727/729 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6463 event pairs, 170 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 1469. Up to 468 conditions per place. [2023-08-27 08:47:15,064 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 65 selfloop transitions, 16 changer transitions 0/87 dead transitions. [2023-08-27 08:47:15,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 87 transitions, 477 flow [2023-08-27 08:47:15,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:47:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:47:15,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 500 transitions. [2023-08-27 08:47:15,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065856129685917 [2023-08-27 08:47:15,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 500 transitions. [2023-08-27 08:47:15,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 500 transitions. [2023-08-27 08:47:15,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:15,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 500 transitions. [2023-08-27 08:47:15,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,068 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,068 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 240 flow. Second operand 7 states and 500 transitions. [2023-08-27 08:47:15,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 87 transitions, 477 flow [2023-08-27 08:47:15,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 477 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 08:47:15,071 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 267 flow [2023-08-27 08:47:15,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-08-27 08:47:15,072 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-27 08:47:15,072 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 267 flow [2023-08-27 08:47:15,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:15,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:15,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 08:47:15,073 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:15,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash -476853759, now seen corresponding path program 1 times [2023-08-27 08:47:15,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:15,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443070833] [2023-08-27 08:47:15,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:15,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:15,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:15,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443070833] [2023-08-27 08:47:15,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443070833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:15,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:15,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:47:15,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517819625] [2023-08-27 08:47:15,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:15,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:47:15,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:47:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:47:15,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 141 [2023-08-27 08:47:15,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:15,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 141 [2023-08-27 08:47:15,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:15,196 INFO L124 PetriNetUnfolderBase]: 434/851 cut-off events. [2023-08-27 08:47:15,196 INFO L125 PetriNetUnfolderBase]: For 1116/1129 co-relation queries the response was YES. [2023-08-27 08:47:15,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 851 events. 434/851 cut-off events. For 1116/1129 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4393 event pairs, 198 based on Foata normal form. 13/786 useless extension candidates. Maximal degree in co-relation 1273. Up to 529 conditions per place. [2023-08-27 08:47:15,200 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 55 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-27 08:47:15,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 463 flow [2023-08-27 08:47:15,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:47:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:47:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-27 08:47:15,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-08-27 08:47:15,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-27 08:47:15,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-27 08:47:15,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:15,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-27 08:47:15,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,204 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 267 flow. Second operand 3 states and 237 transitions. [2023-08-27 08:47:15,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 463 flow [2023-08-27 08:47:15,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 395 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-27 08:47:15,207 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 240 flow [2023-08-27 08:47:15,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-27 08:47:15,208 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-27 08:47:15,209 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 240 flow [2023-08-27 08:47:15,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:15,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:15,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 08:47:15,212 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:15,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1245195614, now seen corresponding path program 1 times [2023-08-27 08:47:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:15,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195612102] [2023-08-27 08:47:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:15,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:15,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195612102] [2023-08-27 08:47:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195612102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:15,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:15,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 08:47:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547548322] [2023-08-27 08:47:15,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:15,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:47:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:15,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:47:15,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:47:15,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 08:47:15,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:15,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 08:47:15,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:15,397 INFO L124 PetriNetUnfolderBase]: 464/959 cut-off events. [2023-08-27 08:47:15,398 INFO L125 PetriNetUnfolderBase]: For 706/719 co-relation queries the response was YES. [2023-08-27 08:47:15,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2749 conditions, 959 events. 464/959 cut-off events. For 706/719 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5244 event pairs, 162 based on Foata normal form. 13/942 useless extension candidates. Maximal degree in co-relation 812. Up to 296 conditions per place. [2023-08-27 08:47:15,401 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 88 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-08-27 08:47:15,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 104 transitions, 709 flow [2023-08-27 08:47:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:47:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:47:15,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2023-08-27 08:47:15,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118203309692672 [2023-08-27 08:47:15,403 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2023-08-27 08:47:15,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2023-08-27 08:47:15,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:15,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2023-08-27 08:47:15,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,405 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,405 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 240 flow. Second operand 6 states and 433 transitions. [2023-08-27 08:47:15,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 104 transitions, 709 flow [2023-08-27 08:47:15,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:47:15,408 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 265 flow [2023-08-27 08:47:15,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-08-27 08:47:15,409 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-08-27 08:47:15,410 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 265 flow [2023-08-27 08:47:15,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:15,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:15,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 08:47:15,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:15,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:15,416 INFO L85 PathProgramCache]: Analyzing trace with hash 698289565, now seen corresponding path program 1 times [2023-08-27 08:47:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:15,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557786009] [2023-08-27 08:47:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:15,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:15,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:15,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557786009] [2023-08-27 08:47:15,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557786009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:15,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:15,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 08:47:15,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786275613] [2023-08-27 08:47:15,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:15,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:47:15,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:15,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:47:15,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:47:15,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 08:47:15,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:15,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 08:47:15,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:15,556 INFO L124 PetriNetUnfolderBase]: 446/923 cut-off events. [2023-08-27 08:47:15,556 INFO L125 PetriNetUnfolderBase]: For 927/940 co-relation queries the response was YES. [2023-08-27 08:47:15,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2803 conditions, 923 events. 446/923 cut-off events. For 927/940 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5001 event pairs, 150 based on Foata normal form. 31/924 useless extension candidates. Maximal degree in co-relation 828. Up to 293 conditions per place. [2023-08-27 08:47:15,560 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 87 selfloop transitions, 8 changer transitions 0/103 dead transitions. [2023-08-27 08:47:15,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 726 flow [2023-08-27 08:47:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:47:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:47:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 432 transitions. [2023-08-27 08:47:15,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-08-27 08:47:15,561 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 432 transitions. [2023-08-27 08:47:15,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 432 transitions. [2023-08-27 08:47:15,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:15,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 432 transitions. [2023-08-27 08:47:15,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,564 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,564 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 265 flow. Second operand 6 states and 432 transitions. [2023-08-27 08:47:15,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 726 flow [2023-08-27 08:47:15,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 103 transitions, 712 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 08:47:15,566 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 263 flow [2023-08-27 08:47:15,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-08-27 08:47:15,567 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-27 08:47:15,567 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 263 flow [2023-08-27 08:47:15,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:15,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:15,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 08:47:15,567 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:15,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:15,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1900479339, now seen corresponding path program 1 times [2023-08-27 08:47:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:15,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933477425] [2023-08-27 08:47:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:15,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:15,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:15,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933477425] [2023-08-27 08:47:15,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933477425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:15,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:15,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 08:47:15,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913104649] [2023-08-27 08:47:15,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:15,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:47:15,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:47:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:47:15,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 08:47:15,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:15,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 08:47:15,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:15,695 INFO L124 PetriNetUnfolderBase]: 470/995 cut-off events. [2023-08-27 08:47:15,695 INFO L125 PetriNetUnfolderBase]: For 1005/1018 co-relation queries the response was YES. [2023-08-27 08:47:15,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 995 events. 470/995 cut-off events. For 1005/1018 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5554 event pairs, 164 based on Foata normal form. 13/978 useless extension candidates. Maximal degree in co-relation 920. Up to 314 conditions per place. [2023-08-27 08:47:15,699 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 84 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2023-08-27 08:47:15,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 696 flow [2023-08-27 08:47:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:47:15,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:47:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 366 transitions. [2023-08-27 08:47:15,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191489361702127 [2023-08-27 08:47:15,701 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 366 transitions. [2023-08-27 08:47:15,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 366 transitions. [2023-08-27 08:47:15,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:15,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 366 transitions. [2023-08-27 08:47:15,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,703 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,703 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 263 flow. Second operand 5 states and 366 transitions. [2023-08-27 08:47:15,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 696 flow [2023-08-27 08:47:15,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 680 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 08:47:15,707 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 273 flow [2023-08-27 08:47:15,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-08-27 08:47:15,708 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-08-27 08:47:15,708 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 273 flow [2023-08-27 08:47:15,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:15,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:15,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 08:47:15,708 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:15,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:15,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1900479340, now seen corresponding path program 1 times [2023-08-27 08:47:15,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868428906] [2023-08-27 08:47:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:15,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868428906] [2023-08-27 08:47:15,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868428906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:15,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:15,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 08:47:15,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490216822] [2023-08-27 08:47:15,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:15,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:47:15,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:15,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:47:15,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:47:15,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 08:47:15,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:15,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 08:47:15,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:15,845 INFO L124 PetriNetUnfolderBase]: 458/971 cut-off events. [2023-08-27 08:47:15,845 INFO L125 PetriNetUnfolderBase]: For 1057/1070 co-relation queries the response was YES. [2023-08-27 08:47:15,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3068 conditions, 971 events. 458/971 cut-off events. For 1057/1070 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5413 event pairs, 158 based on Foata normal form. 13/966 useless extension candidates. Maximal degree in co-relation 914. Up to 314 conditions per place. [2023-08-27 08:47:15,849 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 83 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2023-08-27 08:47:15,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 696 flow [2023-08-27 08:47:15,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:47:15,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:47:15,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 365 transitions. [2023-08-27 08:47:15,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2023-08-27 08:47:15,850 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 365 transitions. [2023-08-27 08:47:15,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 365 transitions. [2023-08-27 08:47:15,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:15,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 365 transitions. [2023-08-27 08:47:15,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,852 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,852 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 273 flow. Second operand 5 states and 365 transitions. [2023-08-27 08:47:15,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 696 flow [2023-08-27 08:47:15,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 686 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 08:47:15,855 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 272 flow [2023-08-27 08:47:15,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2023-08-27 08:47:15,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-08-27 08:47:15,855 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 272 flow [2023-08-27 08:47:15,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:15,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:15,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 08:47:15,856 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:15,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:15,856 INFO L85 PathProgramCache]: Analyzing trace with hash 311141689, now seen corresponding path program 1 times [2023-08-27 08:47:15,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:15,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179815521] [2023-08-27 08:47:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:15,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:15,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179815521] [2023-08-27 08:47:15,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179815521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:15,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:15,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 08:47:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188327116] [2023-08-27 08:47:15,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:15,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:47:15,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:15,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:47:15,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:47:15,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 08:47:15,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:15,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:15,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 08:47:15,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:16,002 INFO L124 PetriNetUnfolderBase]: 392/908 cut-off events. [2023-08-27 08:47:16,002 INFO L125 PetriNetUnfolderBase]: For 1245/1256 co-relation queries the response was YES. [2023-08-27 08:47:16,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 908 events. 392/908 cut-off events. For 1245/1256 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5254 event pairs, 278 based on Foata normal form. 21/911 useless extension candidates. Maximal degree in co-relation 811. Up to 742 conditions per place. [2023-08-27 08:47:16,006 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 50 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-27 08:47:16,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 433 flow [2023-08-27 08:47:16,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:47:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:47:16,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-27 08:47:16,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2023-08-27 08:47:16,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-27 08:47:16,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-27 08:47:16,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:16,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-27 08:47:16,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,008 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 272 flow. Second operand 3 states and 227 transitions. [2023-08-27 08:47:16,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 433 flow [2023-08-27 08:47:16,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 417 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 08:47:16,010 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 266 flow [2023-08-27 08:47:16,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2023-08-27 08:47:16,011 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-27 08:47:16,011 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 266 flow [2023-08-27 08:47:16,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:16,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:16,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 08:47:16,011 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:16,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:16,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1672477219, now seen corresponding path program 2 times [2023-08-27 08:47:16,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:16,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723588940] [2023-08-27 08:47:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:16,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:16,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:16,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723588940] [2023-08-27 08:47:16,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723588940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:16,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:16,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:47:16,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92924729] [2023-08-27 08:47:16,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:16,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:47:16,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:16,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:47:16,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:47:16,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 08:47:16,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:16,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 08:47:16,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:16,274 INFO L124 PetriNetUnfolderBase]: 451/958 cut-off events. [2023-08-27 08:47:16,274 INFO L125 PetriNetUnfolderBase]: For 887/899 co-relation queries the response was YES. [2023-08-27 08:47:16,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2986 conditions, 958 events. 451/958 cut-off events. For 887/899 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5289 event pairs, 141 based on Foata normal form. 15/954 useless extension candidates. Maximal degree in co-relation 923. Up to 283 conditions per place. [2023-08-27 08:47:16,278 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 74 selfloop transitions, 6 changer transitions 31/119 dead transitions. [2023-08-27 08:47:16,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 119 transitions, 850 flow [2023-08-27 08:47:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:47:16,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:47:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 488 transitions. [2023-08-27 08:47:16,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49442755825734547 [2023-08-27 08:47:16,280 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 488 transitions. [2023-08-27 08:47:16,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 488 transitions. [2023-08-27 08:47:16,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:16,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 488 transitions. [2023-08-27 08:47:16,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,282 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 266 flow. Second operand 7 states and 488 transitions. [2023-08-27 08:47:16,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 119 transitions, 850 flow [2023-08-27 08:47:16,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 119 transitions, 846 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:47:16,285 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 258 flow [2023-08-27 08:47:16,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=258, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-08-27 08:47:16,286 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-27 08:47:16,286 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 258 flow [2023-08-27 08:47:16,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:16,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:16,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 08:47:16,287 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:16,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:16,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2077492713, now seen corresponding path program 3 times [2023-08-27 08:47:16,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:16,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154268626] [2023-08-27 08:47:16,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:16,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:16,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:16,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154268626] [2023-08-27 08:47:16,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154268626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:16,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:16,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 08:47:16,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871223333] [2023-08-27 08:47:16,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:16,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:47:16,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:16,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:47:16,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:47:16,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 08:47:16,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:16,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 08:47:16,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:16,555 INFO L124 PetriNetUnfolderBase]: 354/854 cut-off events. [2023-08-27 08:47:16,555 INFO L125 PetriNetUnfolderBase]: For 1052/1055 co-relation queries the response was YES. [2023-08-27 08:47:16,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2666 conditions, 854 events. 354/854 cut-off events. For 1052/1055 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4918 event pairs, 56 based on Foata normal form. 10/852 useless extension candidates. Maximal degree in co-relation 2619. Up to 427 conditions per place. [2023-08-27 08:47:16,558 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 65 selfloop transitions, 11 changer transitions 8/91 dead transitions. [2023-08-27 08:47:16,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 611 flow [2023-08-27 08:47:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 08:47:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 08:47:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 541 transitions. [2023-08-27 08:47:16,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796099290780142 [2023-08-27 08:47:16,560 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 541 transitions. [2023-08-27 08:47:16,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 541 transitions. [2023-08-27 08:47:16,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:16,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 541 transitions. [2023-08-27 08:47:16,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 141.0) internal successors, (1269), 9 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,563 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 141.0) internal successors, (1269), 9 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,563 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 258 flow. Second operand 8 states and 541 transitions. [2023-08-27 08:47:16,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 611 flow [2023-08-27 08:47:16,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 562 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-27 08:47:16,565 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 263 flow [2023-08-27 08:47:16,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=263, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-08-27 08:47:16,566 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-27 08:47:16,566 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 263 flow [2023-08-27 08:47:16,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:16,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:16,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 08:47:16,567 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:16,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:16,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1099517577, now seen corresponding path program 4 times [2023-08-27 08:47:16,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:16,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570954986] [2023-08-27 08:47:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:16,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:16,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:16,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570954986] [2023-08-27 08:47:16,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570954986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:16,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:16,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 08:47:16,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698381260] [2023-08-27 08:47:16,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:16,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:47:16,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:16,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:47:16,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:47:16,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 08:47:16,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 263 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:16,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 08:47:16,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:16,813 INFO L124 PetriNetUnfolderBase]: 274/672 cut-off events. [2023-08-27 08:47:16,814 INFO L125 PetriNetUnfolderBase]: For 829/832 co-relation queries the response was YES. [2023-08-27 08:47:16,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2054 conditions, 672 events. 274/672 cut-off events. For 829/832 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3589 event pairs, 32 based on Foata normal form. 10/676 useless extension candidates. Maximal degree in co-relation 811. Up to 148 conditions per place. [2023-08-27 08:47:16,816 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 57 selfloop transitions, 11 changer transitions 16/91 dead transitions. [2023-08-27 08:47:16,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 581 flow [2023-08-27 08:47:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 08:47:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 08:47:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 604 transitions. [2023-08-27 08:47:16,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47596532702915684 [2023-08-27 08:47:16,818 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 604 transitions. [2023-08-27 08:47:16,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 604 transitions. [2023-08-27 08:47:16,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:16,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 604 transitions. [2023-08-27 08:47:16,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,821 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,821 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 263 flow. Second operand 9 states and 604 transitions. [2023-08-27 08:47:16,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 581 flow [2023-08-27 08:47:16,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 529 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-08-27 08:47:16,824 INFO L231 Difference]: Finished difference. Result has 65 places, 41 transitions, 198 flow [2023-08-27 08:47:16,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=41} [2023-08-27 08:47:16,824 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-27 08:47:16,824 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 41 transitions, 198 flow [2023-08-27 08:47:16,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:16,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:16,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 08:47:16,825 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:16,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1910246865, now seen corresponding path program 5 times [2023-08-27 08:47:16,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:16,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883753505] [2023-08-27 08:47:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:16,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:16,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:16,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883753505] [2023-08-27 08:47:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883753505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:16,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 08:47:16,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614376252] [2023-08-27 08:47:16,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:16,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:47:16,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:47:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:47:16,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 08:47:16,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 41 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:16,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 08:47:16,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:16,961 INFO L124 PetriNetUnfolderBase]: 213/519 cut-off events. [2023-08-27 08:47:16,962 INFO L125 PetriNetUnfolderBase]: For 755/760 co-relation queries the response was YES. [2023-08-27 08:47:16,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 519 events. 213/519 cut-off events. For 755/760 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2465 event pairs, 162 based on Foata normal form. 10/517 useless extension candidates. Maximal degree in co-relation 1124. Up to 416 conditions per place. [2023-08-27 08:47:16,964 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 40 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-27 08:47:16,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 329 flow [2023-08-27 08:47:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:47:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:47:16,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-27 08:47:16,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2023-08-27 08:47:16,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-27 08:47:16,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-27 08:47:16,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:16,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-27 08:47:16,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,967 INFO L175 Difference]: Start difference. First operand has 65 places, 41 transitions, 198 flow. Second operand 3 states and 227 transitions. [2023-08-27 08:47:16,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 329 flow [2023-08-27 08:47:16,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 282 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-08-27 08:47:16,969 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 169 flow [2023-08-27 08:47:16,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-27 08:47:16,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-27 08:47:16,970 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 169 flow [2023-08-27 08:47:16,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:16,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:16,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:16,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 08:47:16,971 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:16,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1868847385, now seen corresponding path program 6 times [2023-08-27 08:47:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:16,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812354440] [2023-08-27 08:47:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:16,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:17,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:17,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812354440] [2023-08-27 08:47:17,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812354440] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:17,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:17,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 08:47:17,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536074016] [2023-08-27 08:47:17,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:17,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:47:17,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:17,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:47:17,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:47:17,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 08:47:17,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:17,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 08:47:17,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:17,180 INFO L124 PetriNetUnfolderBase]: 144/360 cut-off events. [2023-08-27 08:47:17,180 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2023-08-27 08:47:17,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 360 events. 144/360 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1533 event pairs, 36 based on Foata normal form. 8/361 useless extension candidates. Maximal degree in co-relation 335. Up to 213 conditions per place. [2023-08-27 08:47:17,181 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 39 selfloop transitions, 5 changer transitions 10/61 dead transitions. [2023-08-27 08:47:17,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 337 flow [2023-08-27 08:47:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:47:17,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:47:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 403 transitions. [2023-08-27 08:47:17,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635933806146574 [2023-08-27 08:47:17,182 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 403 transitions. [2023-08-27 08:47:17,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 403 transitions. [2023-08-27 08:47:17,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:17,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 403 transitions. [2023-08-27 08:47:17,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,185 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,185 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 169 flow. Second operand 6 states and 403 transitions. [2023-08-27 08:47:17,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 337 flow [2023-08-27 08:47:17,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 08:47:17,186 INFO L231 Difference]: Finished difference. Result has 56 places, 38 transitions, 161 flow [2023-08-27 08:47:17,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=56, PETRI_TRANSITIONS=38} [2023-08-27 08:47:17,186 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-08-27 08:47:17,187 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 38 transitions, 161 flow [2023-08-27 08:47:17,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:17,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:17,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 08:47:17,187 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:17,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash -206405261, now seen corresponding path program 7 times [2023-08-27 08:47:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:17,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294007400] [2023-08-27 08:47:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:17,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:17,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:17,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294007400] [2023-08-27 08:47:17,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294007400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:17,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:17,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 08:47:17,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594461745] [2023-08-27 08:47:17,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:17,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:47:17,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:17,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:47:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:47:17,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 08:47:17,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 38 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:17,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 08:47:17,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:17,336 INFO L124 PetriNetUnfolderBase]: 57/163 cut-off events. [2023-08-27 08:47:17,337 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-08-27 08:47:17,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 163 events. 57/163 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 509 event pairs, 12 based on Foata normal form. 8/169 useless extension candidates. Maximal degree in co-relation 236. Up to 43 conditions per place. [2023-08-27 08:47:17,337 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 26 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2023-08-27 08:47:17,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 43 transitions, 243 flow [2023-08-27 08:47:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 08:47:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 08:47:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 449 transitions. [2023-08-27 08:47:17,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45491388044579534 [2023-08-27 08:47:17,339 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 449 transitions. [2023-08-27 08:47:17,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 449 transitions. [2023-08-27 08:47:17,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:17,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 449 transitions. [2023-08-27 08:47:17,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.14285714285714) internal successors, (449), 7 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,341 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,341 INFO L175 Difference]: Start difference. First operand has 56 places, 38 transitions, 161 flow. Second operand 7 states and 449 transitions. [2023-08-27 08:47:17,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 43 transitions, 243 flow [2023-08-27 08:47:17,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 199 flow, removed 5 selfloop flow, removed 12 redundant places. [2023-08-27 08:47:17,342 INFO L231 Difference]: Finished difference. Result has 48 places, 33 transitions, 127 flow [2023-08-27 08:47:17,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=127, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2023-08-27 08:47:17,343 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-27 08:47:17,343 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 33 transitions, 127 flow [2023-08-27 08:47:17,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:17,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:17,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 08:47:17,343 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 08:47:17,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:17,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1943698077, now seen corresponding path program 8 times [2023-08-27 08:47:17,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:17,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168875596] [2023-08-27 08:47:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:17,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 08:47:17,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:17,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168875596] [2023-08-27 08:47:17,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168875596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:17,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:17,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:47:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638885870] [2023-08-27 08:47:17,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:17,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:47:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:47:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:47:17,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 08:47:17,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 33 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:17,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 08:47:17,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:17,482 INFO L124 PetriNetUnfolderBase]: 54/145 cut-off events. [2023-08-27 08:47:17,482 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-08-27 08:47:17,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 145 events. 54/145 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 472 event pairs, 27 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 208. Up to 61 conditions per place. [2023-08-27 08:47:17,482 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-27 08:47:17,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 37 transitions, 202 flow [2023-08-27 08:47:17,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:47:17,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:47:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 392 transitions. [2023-08-27 08:47:17,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46335697399527187 [2023-08-27 08:47:17,484 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 392 transitions. [2023-08-27 08:47:17,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 392 transitions. [2023-08-27 08:47:17,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:17,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 392 transitions. [2023-08-27 08:47:17,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,486 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,486 INFO L175 Difference]: Start difference. First operand has 48 places, 33 transitions, 127 flow. Second operand 6 states and 392 transitions. [2023-08-27 08:47:17,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 37 transitions, 202 flow [2023-08-27 08:47:17,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 178 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 08:47:17,486 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-27 08:47:17,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-08-27 08:47:17,487 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-27 08:47:17,487 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-27 08:47:17,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:17,489 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 08:47:17,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 08:47:17,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 08:47:17,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 08:47:17,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 08:47:17,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 08:47:17,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 08:47:17,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 08:47:17,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 19 remaining) [2023-08-27 08:47:17,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-27 08:47:17,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-27 08:47:17,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 08:47:17,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 08:47:17,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 08:47:17,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 08:47:17,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 08:47:17,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 08:47:17,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 08:47:17,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 08:47:17,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 08:47:17,492 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:17,495 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 08:47:17,495 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 08:47:17,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 08:47:17 BasicIcfg [2023-08-27 08:47:17,496 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 08:47:17,497 INFO L158 Benchmark]: Toolchain (without parser) took 5913.62ms. Allocated memory was 341.8MB in the beginning and 532.7MB in the end (delta: 190.8MB). Free memory was 318.3MB in the beginning and 297.0MB in the end (delta: 21.3MB). Peak memory consumption was 214.5MB. Max. memory is 16.0GB. [2023-08-27 08:47:17,497 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 341.8MB. Free memory was 318.6MB in the beginning and 318.5MB in the end (delta: 87.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 08:47:17,497 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.71ms. Allocated memory is still 341.8MB. Free memory was 318.3MB in the beginning and 307.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 08:47:17,497 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.37ms. Allocated memory is still 341.8MB. Free memory was 307.0MB in the beginning and 305.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 08:47:17,497 INFO L158 Benchmark]: Boogie Preprocessor took 25.76ms. Allocated memory is still 341.8MB. Free memory was 305.1MB in the beginning and 303.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 08:47:17,498 INFO L158 Benchmark]: RCFGBuilder took 397.03ms. Allocated memory is still 341.8MB. Free memory was 303.8MB in the beginning and 285.7MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 08:47:17,498 INFO L158 Benchmark]: TraceAbstraction took 5288.19ms. Allocated memory was 341.8MB in the beginning and 532.7MB in the end (delta: 190.8MB). Free memory was 284.9MB in the beginning and 297.0MB in the end (delta: -12.0MB). Peak memory consumption was 181.0MB. Max. memory is 16.0GB. [2023-08-27 08:47:17,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 341.8MB. Free memory was 318.6MB in the beginning and 318.5MB in the end (delta: 87.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 159.71ms. Allocated memory is still 341.8MB. Free memory was 318.3MB in the beginning and 307.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.37ms. Allocated memory is still 341.8MB. Free memory was 307.0MB in the beginning and 305.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.76ms. Allocated memory is still 341.8MB. Free memory was 305.1MB in the beginning and 303.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 397.03ms. Allocated memory is still 341.8MB. Free memory was 303.8MB in the beginning and 285.7MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 5288.19ms. Allocated memory was 341.8MB in the beginning and 532.7MB in the end (delta: 190.8MB). Free memory was 284.9MB in the beginning and 297.0MB in the end (delta: -12.0MB). Peak memory consumption was 181.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 82 PlacesBefore, 42 PlacesAfterwards, 76 TransitionsBefore, 35 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 5750 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2624, independent: 2342, independent conditional: 0, independent unconditional: 2342, dependent: 282, dependent conditional: 0, dependent unconditional: 282, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 542, independent: 514, independent conditional: 0, independent unconditional: 514, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2624, independent: 1828, independent conditional: 0, independent unconditional: 1828, dependent: 254, dependent conditional: 0, dependent unconditional: 254, unknown: 542, unknown conditional: 0, unknown unconditional: 542] , Statistics on independence cache: Total cache size (in pairs): 203, Positive cache size: 180, Positive conditional cache size: 0, Positive unconditional cache size: 180, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.2s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1004 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1004 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1865 IncrementalHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 8 mSDtfsCounter, 1865 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=10, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 1115 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 08:47:17,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...