/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-two-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 10:09:26,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 10:09:26,225 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-NoLbe.epf [2023-11-30 10:09:26,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 10:09:26,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 10:09:26,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 10:09:26,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 10:09:26,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 10:09:26,251 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 10:09:26,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 10:09:26,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 10:09:26,254 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 10:09:26,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 10:09:26,255 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 10:09:26,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 10:09:26,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 10:09:26,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 10:09:26,255 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 10:09:26,255 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 10:09:26,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 10:09:26,256 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 10:09:26,256 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 10:09:26,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 10:09:26,256 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 10:09:26,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 10:09:26,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 10:09:26,258 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 10:09:26,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 10:09:26,258 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 10:09:26,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 10:09:26,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 10:09:26,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 10:09:26,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 10:09:26,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 10:09:26,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 10:09:26,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 10:09:26,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 10:09:26,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 10:09:26,441 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 10:09:26,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-two-queue.wvr.c [2023-11-30 10:09:27,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 10:09:27,518 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 10:09:27,519 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-two-queue.wvr.c [2023-11-30 10:09:27,525 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d125cb0e/7baec73b95e74c2da45e0afd3df27963/FLAGf57d31700 [2023-11-30 10:09:27,538 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d125cb0e/7baec73b95e74c2da45e0afd3df27963 [2023-11-30 10:09:27,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 10:09:27,541 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 10:09:27,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 10:09:27,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 10:09:27,546 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 10:09:27,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306a2d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27, skipping insertion in model container [2023-11-30 10:09:27,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,567 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 10:09:27,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 10:09:27,686 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 10:09:27,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 10:09:27,706 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 10:09:27,706 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 10:09:27,711 INFO L206 MainTranslator]: Completed translation [2023-11-30 10:09:27,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27 WrapperNode [2023-11-30 10:09:27,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 10:09:27,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 10:09:27,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 10:09:27,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 10:09:27,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,740 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 228 [2023-11-30 10:09:27,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 10:09:27,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 10:09:27,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 10:09:27,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 10:09:27,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 10:09:27,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 10:09:27,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 10:09:27,769 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 10:09:27,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (1/1) ... [2023-11-30 10:09:27,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 10:09:27,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:09:27,795 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) [2023-11-30 10:09:27,805 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 [2023-11-30 10:09:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 10:09:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 10:09:27,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 10:09:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 10:09:27,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 10:09:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 10:09:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 10:09:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 10:09:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 10:09:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 10:09:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 10:09:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 10:09:27,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 10:09:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 10:09:27,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 10:09:27,823 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 10:09:27,924 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 10:09:27,927 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 10:09:28,179 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 10:09:28,284 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 10:09:28,285 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-30 10:09:28,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 10:09:28 BoogieIcfgContainer [2023-11-30 10:09:28,286 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 10:09:28,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 10:09:28,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 10:09:28,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 10:09:28,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 10:09:27" (1/3) ... [2023-11-30 10:09:28,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f29e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 10:09:28, skipping insertion in model container [2023-11-30 10:09:28,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:09:27" (2/3) ... [2023-11-30 10:09:28,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f29e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 10:09:28, skipping insertion in model container [2023-11-30 10:09:28,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 10:09:28" (3/3) ... [2023-11-30 10:09:28,291 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2023-11-30 10:09:28,315 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 10:09:28,315 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-30 10:09:28,315 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 10:09:28,357 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 10:09:28,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 211 transitions, 436 flow [2023-11-30 10:09:28,429 INFO L124 PetriNetUnfolderBase]: 13/209 cut-off events. [2023-11-30 10:09:28,429 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 10:09:28,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 209 events. 13/209 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 168 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 163. Up to 2 conditions per place. [2023-11-30 10:09:28,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 211 transitions, 436 flow [2023-11-30 10:09:28,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 187 transitions, 383 flow [2023-11-30 10:09:28,442 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 10:09:28,447 INFO L362 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@79f71d1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 10:09:28,447 INFO L363 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-30 10:09:28,457 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 10:09:28,457 INFO L124 PetriNetUnfolderBase]: 3/80 cut-off events. [2023-11-30 10:09:28,457 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 10:09:28,457 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:09:28,458 INFO L232 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:09:28,458 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:09:28,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:09:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2049131778, now seen corresponding path program 1 times [2023-11-30 10:09:28,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:09:28,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103258444] [2023-11-30 10:09:28,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:28,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:09:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:09:28,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:09:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103258444] [2023-11-30 10:09:28,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103258444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:09:28,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:09:28,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:09:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904569585] [2023-11-30 10:09:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:09:28,730 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:09:28,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:09:28,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:09:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 10:09:28,757 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 211 [2023-11-30 10:09:28,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 187 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 158.5) internal successors, (634), 4 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:28,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:09:28,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 211 [2023-11-30 10:09:28,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:09:28,927 INFO L124 PetriNetUnfolderBase]: 55/360 cut-off events. [2023-11-30 10:09:28,927 INFO L125 PetriNetUnfolderBase]: For 36/38 co-relation queries the response was YES. [2023-11-30 10:09:28,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 360 events. 55/360 cut-off events. For 36/38 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1130 event pairs, 24 based on Foata normal form. 24/298 useless extension candidates. Maximal degree in co-relation 268. Up to 115 conditions per place. [2023-11-30 10:09:28,933 INFO L140 encePairwiseOnDemand]: 185/211 looper letters, 47 selfloop transitions, 10 changer transitions 4/193 dead transitions. [2023-11-30 10:09:28,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 193 transitions, 509 flow [2023-11-30 10:09:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 10:09:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 10:09:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 860 transitions. [2023-11-30 10:09:28,949 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8151658767772512 [2023-11-30 10:09:28,949 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 860 transitions. [2023-11-30 10:09:28,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 860 transitions. [2023-11-30 10:09:28,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:09:28,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 860 transitions. [2023-11-30 10:09:28,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:28,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:28,969 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:28,971 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 0 predicate places. [2023-11-30 10:09:28,972 INFO L500 AbstractCegarLoop]: Abstraction has has 182 places, 193 transitions, 509 flow [2023-11-30 10:09:28,973 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.5) internal successors, (634), 4 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:28,973 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:09:28,973 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:09:28,974 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 10:09:28,974 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:09:28,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:09:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1360272710, now seen corresponding path program 1 times [2023-11-30 10:09:28,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:09:28,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748612310] [2023-11-30 10:09:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:09:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:09:29,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:09:29,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748612310] [2023-11-30 10:09:29,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748612310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:09:29,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550871585] [2023-11-30 10:09:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:29,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:09:29,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:09:29,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:09:29,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-30 10:09:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:29,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 10:09:29,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:09:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:09:29,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 10:09:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550871585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:09:29,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 10:09:29,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 10:09:29,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988949631] [2023-11-30 10:09:29,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:09:29,367 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 10:09:29,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:09:29,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 10:09:29,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 10:09:29,369 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 211 [2023-11-30 10:09:29,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 193 transitions, 509 flow. Second operand has 6 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:29,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:09:29,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 211 [2023-11-30 10:09:29,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:09:29,515 INFO L124 PetriNetUnfolderBase]: 55/358 cut-off events. [2023-11-30 10:09:29,515 INFO L125 PetriNetUnfolderBase]: For 100/154 co-relation queries the response was YES. [2023-11-30 10:09:29,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 358 events. 55/358 cut-off events. For 100/154 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1120 event pairs, 24 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 342. Up to 113 conditions per place. [2023-11-30 10:09:29,517 INFO L140 encePairwiseOnDemand]: 199/211 looper letters, 39 selfloop transitions, 16 changer transitions 4/191 dead transitions. [2023-11-30 10:09:29,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 191 transitions, 611 flow [2023-11-30 10:09:29,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 10:09:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 10:09:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1156 transitions. [2023-11-30 10:09:29,520 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7826675693974272 [2023-11-30 10:09:29,520 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1156 transitions. [2023-11-30 10:09:29,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1156 transitions. [2023-11-30 10:09:29,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:09:29,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1156 transitions. [2023-11-30 10:09:29,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.14285714285714) internal successors, (1156), 7 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:29,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:29,524 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:29,525 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 4 predicate places. [2023-11-30 10:09:29,525 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 191 transitions, 611 flow [2023-11-30 10:09:29,526 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:29,526 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:09:29,526 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:09:29,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-30 10:09:29,731 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:09:29,731 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:09:29,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:09:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash -781218399, now seen corresponding path program 1 times [2023-11-30 10:09:29,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:09:29,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637367] [2023-11-30 10:09:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:29,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:09:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:09:29,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:09:29,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637367] [2023-11-30 10:09:29,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637367] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:09:29,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519081068] [2023-11-30 10:09:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:29,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:09:29,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:09:29,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:09:29,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-30 10:09:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:29,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 10:09:29,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:09:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:09:29,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:09:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:09:29,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519081068] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:09:29,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:09:29,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-30 10:09:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035138303] [2023-11-30 10:09:29,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:09:29,975 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-30 10:09:29,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:09:29,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-30 10:09:29,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-30 10:09:29,978 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 211 [2023-11-30 10:09:29,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 191 transitions, 611 flow. Second operand has 12 states, 12 states have (on average 159.83333333333334) internal successors, (1918), 12 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:29,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:09:29,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 211 [2023-11-30 10:09:29,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:09:30,196 INFO L124 PetriNetUnfolderBase]: 61/428 cut-off events. [2023-11-30 10:09:30,196 INFO L125 PetriNetUnfolderBase]: For 242/348 co-relation queries the response was YES. [2023-11-30 10:09:30,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 428 events. 61/428 cut-off events. For 242/348 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1419 event pairs, 24 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 549. Up to 165 conditions per place. [2023-11-30 10:09:30,199 INFO L140 encePairwiseOnDemand]: 197/211 looper letters, 71 selfloop transitions, 36 changer transitions 4/243 dead transitions. [2023-11-30 10:09:30,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 243 transitions, 1137 flow [2023-11-30 10:09:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-30 10:09:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-30 10:09:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2311 transitions. [2023-11-30 10:09:30,203 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7823290453622207 [2023-11-30 10:09:30,203 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2311 transitions. [2023-11-30 10:09:30,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2311 transitions. [2023-11-30 10:09:30,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:09:30,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2311 transitions. [2023-11-30 10:09:30,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 165.07142857142858) internal successors, (2311), 14 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:30,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:30,212 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:30,213 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 17 predicate places. [2023-11-30 10:09:30,213 INFO L500 AbstractCegarLoop]: Abstraction has has 199 places, 243 transitions, 1137 flow [2023-11-30 10:09:30,213 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 159.83333333333334) internal successors, (1918), 12 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:30,214 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:09:30,214 INFO L232 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, 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, 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, 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] [2023-11-30 10:09:30,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-30 10:09:30,418 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-30 10:09:30,419 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:09:30,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:09:30,419 INFO L85 PathProgramCache]: Analyzing trace with hash -254166682, now seen corresponding path program 1 times [2023-11-30 10:09:30,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:09:30,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96803942] [2023-11-30 10:09:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:30,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:09:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:09:30,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:09:30,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96803942] [2023-11-30 10:09:30,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96803942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:09:30,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:09:30,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 10:09:30,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439363325] [2023-11-30 10:09:30,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:09:30,629 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 10:09:30,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:09:30,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 10:09:30,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-30 10:09:30,630 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 211 [2023-11-30 10:09:30,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 243 transitions, 1137 flow. Second operand has 6 states, 6 states have (on average 157.33333333333334) internal successors, (944), 6 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:30,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:09:30,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 211 [2023-11-30 10:09:30,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:09:30,773 INFO L124 PetriNetUnfolderBase]: 62/466 cut-off events. [2023-11-30 10:09:30,774 INFO L125 PetriNetUnfolderBase]: For 509/685 co-relation queries the response was YES. [2023-11-30 10:09:30,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1247 conditions, 466 events. 62/466 cut-off events. For 509/685 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1621 event pairs, 26 based on Foata normal form. 6/376 useless extension candidates. Maximal degree in co-relation 665. Up to 175 conditions per place. [2023-11-30 10:09:30,776 INFO L140 encePairwiseOnDemand]: 197/211 looper letters, 85 selfloop transitions, 12 changer transitions 5/250 dead transitions. [2023-11-30 10:09:30,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 250 transitions, 1392 flow [2023-11-30 10:09:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 10:09:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 10:09:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1437 transitions. [2023-11-30 10:09:30,779 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7567140600315956 [2023-11-30 10:09:30,779 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1437 transitions. [2023-11-30 10:09:30,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1437 transitions. [2023-11-30 10:09:30,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:09:30,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1437 transitions. [2023-11-30 10:09:30,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.66666666666666) internal successors, (1437), 9 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:30,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:30,784 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:30,784 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 25 predicate places. [2023-11-30 10:09:30,784 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 250 transitions, 1392 flow [2023-11-30 10:09:30,785 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.33333333333334) internal successors, (944), 6 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:30,785 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:09:30,785 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:09:30,785 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 10:09:30,785 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:09:30,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:09:30,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1631722953, now seen corresponding path program 2 times [2023-11-30 10:09:30,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:09:30,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340098541] [2023-11-30 10:09:30,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:30,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:09:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:09:30,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:09:30,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340098541] [2023-11-30 10:09:30,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340098541] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:09:30,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291072008] [2023-11-30 10:09:30,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 10:09:30,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:09:30,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:09:30,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:09:30,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-30 10:09:30,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 10:09:30,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 10:09:30,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-30 10:09:30,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:09:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-30 10:09:31,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:09:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-30 10:09:31,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291072008] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:09:31,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:09:31,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2023-11-30 10:09:31,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289695935] [2023-11-30 10:09:31,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:09:31,246 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 10:09:31,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:09:31,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 10:09:31,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-30 10:09:31,249 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 211 [2023-11-30 10:09:31,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 250 transitions, 1392 flow. Second operand has 18 states, 18 states have (on average 141.77777777777777) internal successors, (2552), 18 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:31,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:09:31,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 211 [2023-11-30 10:09:31,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:09:32,004 INFO L124 PetriNetUnfolderBase]: 47/454 cut-off events. [2023-11-30 10:09:32,004 INFO L125 PetriNetUnfolderBase]: For 755/909 co-relation queries the response was YES. [2023-11-30 10:09:32,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 454 events. 47/454 cut-off events. For 755/909 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1340 event pairs, 16 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 969. Up to 174 conditions per place. [2023-11-30 10:09:32,008 INFO L140 encePairwiseOnDemand]: 186/211 looper letters, 88 selfloop transitions, 64 changer transitions 12/278 dead transitions. [2023-11-30 10:09:32,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 278 transitions, 1974 flow [2023-11-30 10:09:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-30 10:09:32,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-11-30 10:09:32,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 6922 transitions. [2023-11-30 10:09:32,021 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6695038204855401 [2023-11-30 10:09:32,021 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 6922 transitions. [2023-11-30 10:09:32,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 6922 transitions. [2023-11-30 10:09:32,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:09:32,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 6922 transitions. [2023-11-30 10:09:32,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 141.26530612244898) internal successors, (6922), 49 states have internal predecessors, (6922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 211.0) internal successors, (10550), 50 states have internal predecessors, (10550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,052 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 211.0) internal successors, (10550), 50 states have internal predecessors, (10550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,054 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 70 predicate places. [2023-11-30 10:09:32,054 INFO L500 AbstractCegarLoop]: Abstraction has has 252 places, 278 transitions, 1974 flow [2023-11-30 10:09:32,055 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 141.77777777777777) internal successors, (2552), 18 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,055 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:09:32,055 INFO L232 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:09:32,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-30 10:09:32,260 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:09:32,260 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:09:32,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:09:32,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2067327933, now seen corresponding path program 1 times [2023-11-30 10:09:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:09:32,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747643338] [2023-11-30 10:09:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:09:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:09:32,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:09:32,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747643338] [2023-11-30 10:09:32,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747643338] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:09:32,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16651483] [2023-11-30 10:09:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:32,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:09:32,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:09:32,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:09:32,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-30 10:09:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:32,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 10:09:32,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:09:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:09:32,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 10:09:32,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16651483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:09:32,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 10:09:32,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-30 10:09:32,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56992322] [2023-11-30 10:09:32,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:09:32,568 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:09:32,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:09:32,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:09:32,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-30 10:09:32,569 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 211 [2023-11-30 10:09:32,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 278 transitions, 1974 flow. Second operand has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:09:32,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 211 [2023-11-30 10:09:32,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:09:32,621 INFO L124 PetriNetUnfolderBase]: 33/420 cut-off events. [2023-11-30 10:09:32,622 INFO L125 PetriNetUnfolderBase]: For 825/916 co-relation queries the response was YES. [2023-11-30 10:09:32,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 420 events. 33/420 cut-off events. For 825/916 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1128 event pairs, 9 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 974. Up to 151 conditions per place. [2023-11-30 10:09:32,623 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 11 selfloop transitions, 3 changer transitions 12/276 dead transitions. [2023-11-30 10:09:32,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 276 transitions, 1986 flow [2023-11-30 10:09:32,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 10:09:32,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 10:09:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 724 transitions. [2023-11-30 10:09:32,625 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8578199052132701 [2023-11-30 10:09:32,625 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 724 transitions. [2023-11-30 10:09:32,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 724 transitions. [2023-11-30 10:09:32,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:09:32,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 724 transitions. [2023-11-30 10:09:32,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,628 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,628 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 71 predicate places. [2023-11-30 10:09:32,628 INFO L500 AbstractCegarLoop]: Abstraction has has 253 places, 276 transitions, 1986 flow [2023-11-30 10:09:32,629 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,629 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:09:32,629 INFO L232 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:09:32,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-30 10:09:32,834 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:09:32,834 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:09:32,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:09:32,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2065270782, now seen corresponding path program 1 times [2023-11-30 10:09:32,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:09:32,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455970488] [2023-11-30 10:09:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:32,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:09:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:09:32,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:09:32,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455970488] [2023-11-30 10:09:32,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455970488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:09:32,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:09:32,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:09:32,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266254258] [2023-11-30 10:09:32,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:09:32,895 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 10:09:32,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:09:32,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 10:09:32,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 10:09:32,897 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 211 [2023-11-30 10:09:32,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 276 transitions, 1986 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:09:32,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 211 [2023-11-30 10:09:32,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:09:32,946 INFO L124 PetriNetUnfolderBase]: 28/396 cut-off events. [2023-11-30 10:09:32,946 INFO L125 PetriNetUnfolderBase]: For 898/971 co-relation queries the response was YES. [2023-11-30 10:09:32,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 396 events. 28/396 cut-off events. For 898/971 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 993 event pairs, 3 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 967. Up to 146 conditions per place. [2023-11-30 10:09:32,947 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 12 selfloop transitions, 2 changer transitions 13/280 dead transitions. [2023-11-30 10:09:32,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 280 transitions, 2086 flow [2023-11-30 10:09:32,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 10:09:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 10:09:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-11-30 10:09:32,950 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8815165876777251 [2023-11-30 10:09:32,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-11-30 10:09:32,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-11-30 10:09:32,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:09:32,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-11-30 10:09:32,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,963 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 73 predicate places. [2023-11-30 10:09:32,963 INFO L500 AbstractCegarLoop]: Abstraction has has 255 places, 280 transitions, 2086 flow [2023-11-30 10:09:32,963 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:32,964 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:09:32,964 INFO L232 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:09:32,964 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 10:09:32,964 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:09:32,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:09:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1477883810, now seen corresponding path program 1 times [2023-11-30 10:09:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:09:32,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507900709] [2023-11-30 10:09:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:32,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:09:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:09:33,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:09:33,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507900709] [2023-11-30 10:09:33,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507900709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:09:33,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:09:33,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:09:33,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513135773] [2023-11-30 10:09:33,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:09:33,064 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 10:09:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:09:33,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 10:09:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 10:09:33,065 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 211 [2023-11-30 10:09:33,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 280 transitions, 2086 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:33,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:09:33,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 211 [2023-11-30 10:09:33,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:09:33,110 INFO L124 PetriNetUnfolderBase]: 24/381 cut-off events. [2023-11-30 10:09:33,110 INFO L125 PetriNetUnfolderBase]: For 1024/1109 co-relation queries the response was YES. [2023-11-30 10:09:33,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 381 events. 24/381 cut-off events. For 1024/1109 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 878 event pairs, 2 based on Foata normal form. 4/352 useless extension candidates. Maximal degree in co-relation 974. Up to 142 conditions per place. [2023-11-30 10:09:33,111 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 13 selfloop transitions, 3 changer transitions 15/284 dead transitions. [2023-11-30 10:09:33,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 284 transitions, 2202 flow [2023-11-30 10:09:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 10:09:33,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 10:09:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2023-11-30 10:09:33,113 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8830963665086888 [2023-11-30 10:09:33,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 559 transitions. [2023-11-30 10:09:33,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 559 transitions. [2023-11-30 10:09:33,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:09:33,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 559 transitions. [2023-11-30 10:09:33,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:33,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:33,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:33,116 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 75 predicate places. [2023-11-30 10:09:33,116 INFO L500 AbstractCegarLoop]: Abstraction has has 257 places, 284 transitions, 2202 flow [2023-11-30 10:09:33,117 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:33,117 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:09:33,117 INFO L232 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:09:33,117 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 10:09:33,118 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:09:33,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:09:33,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1610148700, now seen corresponding path program 1 times [2023-11-30 10:09:33,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:09:33,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152738776] [2023-11-30 10:09:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:33,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:09:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:09:33,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:09:33,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152738776] [2023-11-30 10:09:33,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152738776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:09:33,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:09:33,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 10:09:33,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609267340] [2023-11-30 10:09:33,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:09:33,237 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 10:09:33,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:09:33,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 10:09:33,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-30 10:09:33,238 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 211 [2023-11-30 10:09:33,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 284 transitions, 2202 flow. Second operand has 6 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:33,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:09:33,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 211 [2023-11-30 10:09:33,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:09:33,362 INFO L124 PetriNetUnfolderBase]: 30/572 cut-off events. [2023-11-30 10:09:33,363 INFO L125 PetriNetUnfolderBase]: For 2175/2304 co-relation queries the response was YES. [2023-11-30 10:09:33,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2105 conditions, 572 events. 30/572 cut-off events. For 2175/2304 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1947 event pairs, 2 based on Foata normal form. 6/527 useless extension candidates. Maximal degree in co-relation 1665. Up to 212 conditions per place. [2023-11-30 10:09:33,365 INFO L140 encePairwiseOnDemand]: 200/211 looper letters, 137 selfloop transitions, 12 changer transitions 42/348 dead transitions. [2023-11-30 10:09:33,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 348 transitions, 3367 flow [2023-11-30 10:09:33,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 10:09:33,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 10:09:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1444 transitions. [2023-11-30 10:09:33,367 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7604002106371774 [2023-11-30 10:09:33,368 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1444 transitions. [2023-11-30 10:09:33,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1444 transitions. [2023-11-30 10:09:33,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:09:33,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1444 transitions. [2023-11-30 10:09:33,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 160.44444444444446) internal successors, (1444), 9 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:33,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:33,372 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:33,373 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 83 predicate places. [2023-11-30 10:09:33,373 INFO L500 AbstractCegarLoop]: Abstraction has has 265 places, 348 transitions, 3367 flow [2023-11-30 10:09:33,373 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:33,373 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:09:33,373 INFO L232 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, 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, 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, 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, 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, 1, 1, 1] [2023-11-30 10:09:33,373 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-30 10:09:33,373 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:09:33,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:09:33,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1709663909, now seen corresponding path program 1 times [2023-11-30 10:09:33,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:09:33,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160260090] [2023-11-30 10:09:33,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:33,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:09:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:09:33,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:09:33,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160260090] [2023-11-30 10:09:33,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160260090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:09:33,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472818401] [2023-11-30 10:09:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:09:33,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:09:33,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:09:33,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:09:33,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-30 10:09:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:09:34,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-30 10:09:34,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:09:34,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-30 10:09:34,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-30 10:09:35,164 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 10:09:35,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 10:09:35,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-30 10:09:35,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 10:09:35,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-30 10:09:35,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 10:09:35,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-30 10:09:35,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-30 10:09:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:09:35,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:09:37,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 10:09:37,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2023-11-30 10:09:37,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 10:09:37,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 341 treesize of output 325 [2023-11-30 10:09:37,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 128 [2023-11-30 10:09:37,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 55 [2023-11-30 10:09:37,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 54 [2023-11-30 10:09:37,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 10:09:37,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 70 [2023-11-30 10:09:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:09:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472818401] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:09:38,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:09:38,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 65 [2023-11-30 10:09:38,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320421975] [2023-11-30 10:09:38,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:09:38,684 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-30 10:09:38,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:09:38,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-30 10:09:38,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=4010, Unknown=11, NotChecked=0, Total=4290 [2023-11-30 10:09:38,688 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-11-30 10:09:38,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 348 transitions, 3367 flow. Second operand has 66 states, 66 states have (on average 89.42424242424242) internal successors, (5902), 66 states have internal predecessors, (5902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:09:38,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:09:38,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-11-30 10:09:38,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:10:09,849 INFO L124 PetriNetUnfolderBase]: 1717/4311 cut-off events. [2023-11-30 10:10:09,850 INFO L125 PetriNetUnfolderBase]: For 21632/21668 co-relation queries the response was YES. [2023-11-30 10:10:09,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15515 conditions, 4311 events. 1717/4311 cut-off events. For 21632/21668 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 31469 event pairs, 183 based on Foata normal form. 0/3653 useless extension candidates. Maximal degree in co-relation 8452. Up to 915 conditions per place. [2023-11-30 10:10:09,877 INFO L140 encePairwiseOnDemand]: 163/211 looper letters, 509 selfloop transitions, 193 changer transitions 93/862 dead transitions. [2023-11-30 10:10:09,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 862 transitions, 8907 flow [2023-11-30 10:10:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-11-30 10:10:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2023-11-30 10:10:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 9117 transitions. [2023-11-30 10:10:09,887 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.43644980611805256 [2023-11-30 10:10:09,887 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 9117 transitions. [2023-11-30 10:10:09,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 9117 transitions. [2023-11-30 10:10:09,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:10:09,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 9117 transitions. [2023-11-30 10:10:09,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 92.0909090909091) internal successors, (9117), 99 states have internal predecessors, (9117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:09,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 211.0) internal successors, (21100), 100 states have internal predecessors, (21100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:09,923 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 211.0) internal successors, (21100), 100 states have internal predecessors, (21100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:09,924 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 181 predicate places. [2023-11-30 10:10:09,924 INFO L500 AbstractCegarLoop]: Abstraction has has 363 places, 862 transitions, 8907 flow [2023-11-30 10:10:09,925 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 89.42424242424242) internal successors, (5902), 66 states have internal predecessors, (5902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:09,925 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:10:09,925 INFO L232 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, 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, 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, 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, 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, 1, 1, 1] [2023-11-30 10:10:09,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-30 10:10:10,132 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-30 10:10:10,135 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:10:10,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:10:10,135 INFO L85 PathProgramCache]: Analyzing trace with hash -93730610, now seen corresponding path program 1 times [2023-11-30 10:10:10,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:10:10,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766627124] [2023-11-30 10:10:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:10:10,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:10:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:10:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:10:11,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:10:11,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766627124] [2023-11-30 10:10:11,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766627124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:10:11,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869075621] [2023-11-30 10:10:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:10:11,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:10:11,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:10:11,179 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:10:11,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-30 10:10:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:10:11,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-30 10:10:11,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:10:12,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-30 10:10:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:10:12,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:10:12,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 10:10:12,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-30 10:10:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:10:13,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869075621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:10:13,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:10:13,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 12] total 49 [2023-11-30 10:10:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960579412] [2023-11-30 10:10:13,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:10:13,091 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-30 10:10:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:10:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-30 10:10:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2191, Unknown=0, NotChecked=0, Total=2450 [2023-11-30 10:10:13,094 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 211 [2023-11-30 10:10:13,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 862 transitions, 8907 flow. Second operand has 50 states, 50 states have (on average 93.56) internal successors, (4678), 50 states have internal predecessors, (4678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:13,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:10:13,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 211 [2023-11-30 10:10:13,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:10:21,425 INFO L124 PetriNetUnfolderBase]: 9719/19311 cut-off events. [2023-11-30 10:10:21,425 INFO L125 PetriNetUnfolderBase]: For 109520/110124 co-relation queries the response was YES. [2023-11-30 10:10:21,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77606 conditions, 19311 events. 9719/19311 cut-off events. For 109520/110124 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 179313 event pairs, 519 based on Foata normal form. 34/16493 useless extension candidates. Maximal degree in co-relation 44182. Up to 3425 conditions per place. [2023-11-30 10:10:21,562 INFO L140 encePairwiseOnDemand]: 173/211 looper letters, 2067 selfloop transitions, 690 changer transitions 159/3037 dead transitions. [2023-11-30 10:10:21,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 3037 transitions, 33112 flow [2023-11-30 10:10:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-30 10:10:21,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-11-30 10:10:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 9271 transitions. [2023-11-30 10:10:21,571 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4529730786143548 [2023-11-30 10:10:21,571 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 9271 transitions. [2023-11-30 10:10:21,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 9271 transitions. [2023-11-30 10:10:21,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:10:21,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 9271 transitions. [2023-11-30 10:10:21,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 95.57731958762886) internal successors, (9271), 97 states have internal predecessors, (9271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:21,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 211.0) internal successors, (20678), 98 states have internal predecessors, (20678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:21,606 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 211.0) internal successors, (20678), 98 states have internal predecessors, (20678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:21,607 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 277 predicate places. [2023-11-30 10:10:21,607 INFO L500 AbstractCegarLoop]: Abstraction has has 459 places, 3037 transitions, 33112 flow [2023-11-30 10:10:21,608 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 93.56) internal successors, (4678), 50 states have internal predecessors, (4678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:21,608 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:10:21,608 INFO L232 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, 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, 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, 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, 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, 1, 1, 1, 1] [2023-11-30 10:10:21,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-30 10:10:21,819 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:10:21,819 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:10:21,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:10:21,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1389319114, now seen corresponding path program 1 times [2023-11-30 10:10:21,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:10:21,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131501803] [2023-11-30 10:10:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:10:21,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:10:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:10:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:10:22,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:10:22,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131501803] [2023-11-30 10:10:22,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131501803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:10:22,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864089869] [2023-11-30 10:10:22,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:10:22,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:10:22,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:10:22,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:10:22,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-30 10:10:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:10:22,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-30 10:10:22,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:10:23,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-30 10:10:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:10:23,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:10:23,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 10:10:23,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2023-11-30 10:10:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:10:24,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864089869] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:10:24,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:10:24,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 12] total 44 [2023-11-30 10:10:24,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151955919] [2023-11-30 10:10:24,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:10:24,373 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-30 10:10:24,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:10:24,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-30 10:10:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1649, Unknown=0, NotChecked=0, Total=1980 [2023-11-30 10:10:24,377 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 211 [2023-11-30 10:10:24,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 3037 transitions, 33112 flow. Second operand has 45 states, 45 states have (on average 106.57777777777778) internal successors, (4796), 45 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:24,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:10:24,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 211 [2023-11-30 10:10:24,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:10:37,520 INFO L124 PetriNetUnfolderBase]: 20190/39033 cut-off events. [2023-11-30 10:10:37,520 INFO L125 PetriNetUnfolderBase]: For 241014/243457 co-relation queries the response was YES. [2023-11-30 10:10:37,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188017 conditions, 39033 events. 20190/39033 cut-off events. For 241014/243457 co-relation queries the response was YES. Maximal size of possible extension queue 1823. Compared 393852 event pairs, 670 based on Foata normal form. 284/34052 useless extension candidates. Maximal degree in co-relation 95361. Up to 7063 conditions per place. [2023-11-30 10:10:37,873 INFO L140 encePairwiseOnDemand]: 178/211 looper letters, 5048 selfloop transitions, 1543 changer transitions 165/6916 dead transitions. [2023-11-30 10:10:37,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 6916 transitions, 87232 flow [2023-11-30 10:10:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-11-30 10:10:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2023-11-30 10:10:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 12118 transitions. [2023-11-30 10:10:37,887 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.517398915503181 [2023-11-30 10:10:37,887 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 12118 transitions. [2023-11-30 10:10:37,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 12118 transitions. [2023-11-30 10:10:37,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:10:37,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 12118 transitions. [2023-11-30 10:10:37,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 112 states, 111 states have (on average 109.17117117117117) internal successors, (12118), 111 states have internal predecessors, (12118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:37,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 112 states, 112 states have (on average 211.0) internal successors, (23632), 112 states have internal predecessors, (23632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:37,935 INFO L81 ComplementDD]: Finished complementDD. Result has 112 states, 112 states have (on average 211.0) internal successors, (23632), 112 states have internal predecessors, (23632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:37,936 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 383 predicate places. [2023-11-30 10:10:37,936 INFO L500 AbstractCegarLoop]: Abstraction has has 565 places, 6916 transitions, 87232 flow [2023-11-30 10:10:37,937 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 106.57777777777778) internal successors, (4796), 45 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:37,937 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:10:37,937 INFO L232 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, 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, 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, 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, 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, 1, 1, 1, 1] [2023-11-30 10:10:37,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-30 10:10:38,142 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:10:38,143 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:10:38,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:10:38,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1067703294, now seen corresponding path program 2 times [2023-11-30 10:10:38,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:10:38,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058794270] [2023-11-30 10:10:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:10:38,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:10:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:10:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:10:39,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:10:39,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058794270] [2023-11-30 10:10:39,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058794270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:10:39,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848519888] [2023-11-30 10:10:39,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 10:10:39,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:10:39,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:10:39,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:10:39,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-30 10:10:39,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 10:10:39,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 10:10:39,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-30 10:10:39,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:10:39,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 10:10:39,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-30 10:10:39,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-30 10:10:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 10:10:39,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 10:10:39,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848519888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:10:39,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 10:10:39,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 31 [2023-11-30 10:10:39,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337236102] [2023-11-30 10:10:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:10:39,789 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-30 10:10:39,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:10:39,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-30 10:10:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2023-11-30 10:10:39,791 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 211 [2023-11-30 10:10:39,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 6916 transitions, 87232 flow. Second operand has 14 states, 14 states have (on average 134.21428571428572) internal successors, (1879), 14 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:10:39,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:10:39,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 211 [2023-11-30 10:10:39,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:11:01,230 INFO L124 PetriNetUnfolderBase]: 20941/40384 cut-off events. [2023-11-30 10:11:01,231 INFO L125 PetriNetUnfolderBase]: For 274992/278727 co-relation queries the response was YES. [2023-11-30 10:11:01,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225305 conditions, 40384 events. 20941/40384 cut-off events. For 274992/278727 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 409663 event pairs, 665 based on Foata normal form. 368/35476 useless extension candidates. Maximal degree in co-relation 112067. Up to 21485 conditions per place. [2023-11-30 10:11:01,614 INFO L140 encePairwiseOnDemand]: 185/211 looper letters, 6601 selfloop transitions, 545 changer transitions 165/7698 dead transitions. [2023-11-30 10:11:01,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 7698 transitions, 111058 flow [2023-11-30 10:11:01,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-30 10:11:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-30 10:11:01,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3157 transitions. [2023-11-30 10:11:01,617 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6505254481763857 [2023-11-30 10:11:01,617 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3157 transitions. [2023-11-30 10:11:01,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3157 transitions. [2023-11-30 10:11:01,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:11:01,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3157 transitions. [2023-11-30 10:11:01,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 137.2608695652174) internal successors, (3157), 23 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:01,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 211.0) internal successors, (5064), 24 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:01,623 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 211.0) internal successors, (5064), 24 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:01,624 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 405 predicate places. [2023-11-30 10:11:01,624 INFO L500 AbstractCegarLoop]: Abstraction has has 587 places, 7698 transitions, 111058 flow [2023-11-30 10:11:01,624 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 134.21428571428572) internal successors, (1879), 14 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:01,624 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:11:01,624 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1] [2023-11-30 10:11:01,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-30 10:11:01,829 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-30 10:11:01,830 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:11:01,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:11:01,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2078871348, now seen corresponding path program 1 times [2023-11-30 10:11:01,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:11:01,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133853939] [2023-11-30 10:11:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:11:01,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:11:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:11:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:11:02,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:11:02,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133853939] [2023-11-30 10:11:02,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133853939] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:11:02,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476473114] [2023-11-30 10:11:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:11:02,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:11:02,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:11:02,022 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:11:02,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-30 10:11:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:11:02,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-30 10:11:02,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:11:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:11:02,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:11:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:11:02,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476473114] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:11:02,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:11:02,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-30 10:11:02,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712099855] [2023-11-30 10:11:02,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:11:02,746 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-30 10:11:02,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:11:02,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-30 10:11:02,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-30 10:11:02,748 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 211 [2023-11-30 10:11:02,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 7698 transitions, 111058 flow. Second operand has 19 states, 19 states have (on average 145.05263157894737) internal successors, (2756), 19 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:02,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:11:02,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 211 [2023-11-30 10:11:02,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:11:13,784 INFO L124 PetriNetUnfolderBase]: 12273/24385 cut-off events. [2023-11-30 10:11:13,784 INFO L125 PetriNetUnfolderBase]: For 211722/213838 co-relation queries the response was YES. [2023-11-30 10:11:13,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134271 conditions, 24385 events. 12273/24385 cut-off events. For 211722/213838 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 230462 event pairs, 509 based on Foata normal form. 452/21356 useless extension candidates. Maximal degree in co-relation 61180. Up to 9399 conditions per place. [2023-11-30 10:11:13,992 INFO L140 encePairwiseOnDemand]: 195/211 looper letters, 1074 selfloop transitions, 76 changer transitions 414/4957 dead transitions. [2023-11-30 10:11:13,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 4957 transitions, 72224 flow [2023-11-30 10:11:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-30 10:11:13,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-30 10:11:13,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3082 transitions. [2023-11-30 10:11:13,995 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.695554051004288 [2023-11-30 10:11:13,995 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3082 transitions. [2023-11-30 10:11:13,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3082 transitions. [2023-11-30 10:11:13,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:11:13,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3082 transitions. [2023-11-30 10:11:13,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 146.76190476190476) internal successors, (3082), 21 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:14,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 211.0) internal successors, (4642), 22 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:14,003 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 211.0) internal successors, (4642), 22 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:14,003 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 411 predicate places. [2023-11-30 10:11:14,003 INFO L500 AbstractCegarLoop]: Abstraction has has 593 places, 4957 transitions, 72224 flow [2023-11-30 10:11:14,003 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 145.05263157894737) internal successors, (2756), 19 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:14,004 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:11:14,004 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1] [2023-11-30 10:11:14,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-30 10:11:14,209 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-30 10:11:14,209 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:11:14,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:11:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2026472780, now seen corresponding path program 1 times [2023-11-30 10:11:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:11:14,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427528260] [2023-11-30 10:11:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:11:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:11:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:11:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:11:14,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:11:14,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427528260] [2023-11-30 10:11:14,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427528260] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:11:14,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991871604] [2023-11-30 10:11:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:11:14,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:11:14,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:11:14,359 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:11:14,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-30 10:11:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:11:14,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-30 10:11:14,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:11:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:11:14,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:11:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:11:14,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991871604] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:11:14,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:11:14,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-30 10:11:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938116004] [2023-11-30 10:11:14,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:11:14,783 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-30 10:11:14,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:11:14,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-30 10:11:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-30 10:11:14,785 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 211 [2023-11-30 10:11:14,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 4957 transitions, 72224 flow. Second operand has 19 states, 19 states have (on average 145.26315789473685) internal successors, (2760), 19 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:14,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:11:14,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 211 [2023-11-30 10:11:14,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:11:19,392 INFO L124 PetriNetUnfolderBase]: 6960/14658 cut-off events. [2023-11-30 10:11:19,392 INFO L125 PetriNetUnfolderBase]: For 140836/142645 co-relation queries the response was YES. [2023-11-30 10:11:19,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80055 conditions, 14658 events. 6960/14658 cut-off events. For 140836/142645 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 132264 event pairs, 356 based on Foata normal form. 346/12846 useless extension candidates. Maximal degree in co-relation 24792. Up to 5074 conditions per place. [2023-11-30 10:11:19,483 INFO L140 encePairwiseOnDemand]: 195/211 looper letters, 624 selfloop transitions, 78 changer transitions 695/3152 dead transitions. [2023-11-30 10:11:19,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 3152 transitions, 46945 flow [2023-11-30 10:11:19,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-30 10:11:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-30 10:11:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2763 transitions. [2023-11-30 10:11:19,486 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6891993015714643 [2023-11-30 10:11:19,486 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2763 transitions. [2023-11-30 10:11:19,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2763 transitions. [2023-11-30 10:11:19,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:11:19,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2763 transitions. [2023-11-30 10:11:19,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 145.42105263157896) internal successors, (2763), 19 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:19,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 211.0) internal successors, (4220), 20 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:19,491 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 211.0) internal successors, (4220), 20 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:19,491 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 381 predicate places. [2023-11-30 10:11:19,491 INFO L500 AbstractCegarLoop]: Abstraction has has 563 places, 3152 transitions, 46945 flow [2023-11-30 10:11:19,492 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 145.26315789473685) internal successors, (2760), 19 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:19,492 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:11:19,492 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:11:19,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-30 10:11:19,699 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-30 10:11:19,699 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:11:19,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:11:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash 838876515, now seen corresponding path program 2 times [2023-11-30 10:11:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:11:19,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839572456] [2023-11-30 10:11:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:11:19,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:11:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:11:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:11:20,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:11:20,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839572456] [2023-11-30 10:11:20,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839572456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:11:20,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829988396] [2023-11-30 10:11:20,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 10:11:20,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:11:20,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:11:20,961 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:11:20,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-30 10:11:21,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 10:11:21,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 10:11:21,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-30 10:11:21,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:11:21,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-30 10:11:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-30 10:11:21,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 10:11:21,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829988396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:11:21,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 10:11:21,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [19] total 24 [2023-11-30 10:11:21,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282024910] [2023-11-30 10:11:21,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:11:21,412 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 10:11:21,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:11:21,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 10:11:21,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2023-11-30 10:11:21,414 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 211 [2023-11-30 10:11:21,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 3152 transitions, 46945 flow. Second operand has 7 states, 7 states have (on average 158.28571428571428) internal successors, (1108), 7 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:21,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:11:21,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 211 [2023-11-30 10:11:21,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:11:26,834 INFO L124 PetriNetUnfolderBase]: 8417/17584 cut-off events. [2023-11-30 10:11:26,835 INFO L125 PetriNetUnfolderBase]: For 160203/163224 co-relation queries the response was YES. [2023-11-30 10:11:26,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110862 conditions, 17584 events. 8417/17584 cut-off events. For 160203/163224 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 159248 event pairs, 360 based on Foata normal form. 145/15279 useless extension candidates. Maximal degree in co-relation 29012. Up to 5971 conditions per place. [2023-11-30 10:11:26,956 INFO L140 encePairwiseOnDemand]: 201/211 looper letters, 2635 selfloop transitions, 261 changer transitions 760/4112 dead transitions. [2023-11-30 10:11:26,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 4112 transitions, 68708 flow [2023-11-30 10:11:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-30 10:11:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-30 10:11:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1989 transitions. [2023-11-30 10:11:26,958 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7855450236966824 [2023-11-30 10:11:26,958 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1989 transitions. [2023-11-30 10:11:26,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1989 transitions. [2023-11-30 10:11:26,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:11:26,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1989 transitions. [2023-11-30 10:11:26,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 165.75) internal successors, (1989), 12 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:26,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 211.0) internal successors, (2743), 13 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:26,961 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 211.0) internal successors, (2743), 13 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:26,962 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 392 predicate places. [2023-11-30 10:11:26,962 INFO L500 AbstractCegarLoop]: Abstraction has has 574 places, 4112 transitions, 68708 flow [2023-11-30 10:11:26,962 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.28571428571428) internal successors, (1108), 7 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:26,962 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:11:26,962 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:11:26,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-30 10:11:27,166 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-30 10:11:27,167 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:11:27,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:11:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1625390771, now seen corresponding path program 2 times [2023-11-30 10:11:27,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:11:27,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244143987] [2023-11-30 10:11:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:11:27,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:11:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:11:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:11:28,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:11:28,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244143987] [2023-11-30 10:11:28,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244143987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:11:28,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468741142] [2023-11-30 10:11:28,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 10:11:28,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:11:28,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:11:28,622 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:11:28,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-30 10:11:28,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 10:11:28,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 10:11:28,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-30 10:11:28,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:11:29,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 10:11:29,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-30 10:11:29,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-30 10:11:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-30 10:11:29,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 10:11:29,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468741142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:11:29,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 10:11:29,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [26] total 38 [2023-11-30 10:11:29,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803995415] [2023-11-30 10:11:29,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:11:29,484 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-30 10:11:29,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:11:29,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-30 10:11:29,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1375, Unknown=0, NotChecked=0, Total=1482 [2023-11-30 10:11:29,486 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 211 [2023-11-30 10:11:29,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 4112 transitions, 68708 flow. Second operand has 14 states, 14 states have (on average 134.14285714285714) internal successors, (1878), 14 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:29,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:11:29,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 211 [2023-11-30 10:11:29,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:11:37,348 INFO L124 PetriNetUnfolderBase]: 8800/18150 cut-off events. [2023-11-30 10:11:37,348 INFO L125 PetriNetUnfolderBase]: For 185475/190930 co-relation queries the response was YES. [2023-11-30 10:11:37,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130412 conditions, 18150 events. 8800/18150 cut-off events. For 185475/190930 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 162139 event pairs, 451 based on Foata normal form. 227/15911 useless extension candidates. Maximal degree in co-relation 39434. Up to 6748 conditions per place. [2023-11-30 10:11:37,467 INFO L140 encePairwiseOnDemand]: 186/211 looper letters, 2621 selfloop transitions, 340 changer transitions 802/4134 dead transitions. [2023-11-30 10:11:37,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 4134 transitions, 77070 flow [2023-11-30 10:11:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-30 10:11:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-30 10:11:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3163 transitions. [2023-11-30 10:11:37,470 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6517617968267051 [2023-11-30 10:11:37,470 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3163 transitions. [2023-11-30 10:11:37,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3163 transitions. [2023-11-30 10:11:37,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:11:37,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3163 transitions. [2023-11-30 10:11:37,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 137.52173913043478) internal successors, (3163), 23 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:37,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 211.0) internal successors, (5064), 24 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:37,475 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 211.0) internal successors, (5064), 24 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:37,476 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 414 predicate places. [2023-11-30 10:11:37,476 INFO L500 AbstractCegarLoop]: Abstraction has has 596 places, 4134 transitions, 77070 flow [2023-11-30 10:11:37,480 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 134.14285714285714) internal successors, (1878), 14 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:37,480 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:11:37,480 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:11:37,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-30 10:11:37,684 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-30 10:11:37,685 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:11:37,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:11:37,685 INFO L85 PathProgramCache]: Analyzing trace with hash 235368898, now seen corresponding path program 1 times [2023-11-30 10:11:37,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:11:37,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672838388] [2023-11-30 10:11:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:11:37,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:11:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:11:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:11:38,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:11:38,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672838388] [2023-11-30 10:11:38,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672838388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:11:38,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910217811] [2023-11-30 10:11:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:11:38,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:11:38,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:11:38,675 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:11:38,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-30 10:11:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:11:38,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-30 10:11:38,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:11:39,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-30 10:11:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:11:39,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:11:39,512 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 10:11:39,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2023-11-30 10:11:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:11:40,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910217811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:11:40,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:11:40,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 45 [2023-11-30 10:11:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985112130] [2023-11-30 10:11:40,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:11:40,907 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-30 10:11:40,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:11:40,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-30 10:11:40,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1721, Unknown=0, NotChecked=0, Total=2070 [2023-11-30 10:11:40,910 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 211 [2023-11-30 10:11:40,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 4134 transitions, 77070 flow. Second operand has 46 states, 46 states have (on average 106.8913043478261) internal successors, (4917), 46 states have internal predecessors, (4917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:40,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:11:40,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 211 [2023-11-30 10:11:40,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:11:53,897 INFO L124 PetriNetUnfolderBase]: 12288/25328 cut-off events. [2023-11-30 10:11:53,897 INFO L125 PetriNetUnfolderBase]: For 290577/297848 co-relation queries the response was YES. [2023-11-30 10:11:53,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204063 conditions, 25328 events. 12288/25328 cut-off events. For 290577/297848 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 239755 event pairs, 498 based on Foata normal form. 323/22513 useless extension candidates. Maximal degree in co-relation 42163. Up to 10136 conditions per place. [2023-11-30 10:11:54,104 INFO L140 encePairwiseOnDemand]: 179/211 looper letters, 4119 selfloop transitions, 635 changer transitions 901/5837 dead transitions. [2023-11-30 10:11:54,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 5837 transitions, 121668 flow [2023-11-30 10:11:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-30 10:11:54,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-11-30 10:11:54,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 6045 transitions. [2023-11-30 10:11:54,107 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5115944482058226 [2023-11-30 10:11:54,107 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 6045 transitions. [2023-11-30 10:11:54,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 6045 transitions. [2023-11-30 10:11:54,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:11:54,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 6045 transitions. [2023-11-30 10:11:54,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 107.94642857142857) internal successors, (6045), 56 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:54,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 211.0) internal successors, (12027), 57 states have internal predecessors, (12027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:54,123 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 211.0) internal successors, (12027), 57 states have internal predecessors, (12027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:54,123 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 469 predicate places. [2023-11-30 10:11:54,123 INFO L500 AbstractCegarLoop]: Abstraction has has 651 places, 5837 transitions, 121668 flow [2023-11-30 10:11:54,124 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 106.8913043478261) internal successors, (4917), 46 states have internal predecessors, (4917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:54,124 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:11:54,124 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:11:54,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-30 10:11:54,329 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-30 10:11:54,329 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:11:54,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:11:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash 413394508, now seen corresponding path program 2 times [2023-11-30 10:11:54,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:11:54,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886923270] [2023-11-30 10:11:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:11:54,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:11:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:11:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 10:11:54,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:11:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886923270] [2023-11-30 10:11:54,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886923270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:11:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471107632] [2023-11-30 10:11:54,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 10:11:54,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:11:54,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:11:54,465 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:11:54,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-30 10:11:54,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-30 10:11:54,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 10:11:54,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 10:11:54,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:11:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-30 10:11:54,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 10:11:54,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471107632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:11:54,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 10:11:54,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-30 10:11:54,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587684367] [2023-11-30 10:11:54,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:11:54,705 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:11:54,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:11:54,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:11:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-30 10:11:54,705 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 211 [2023-11-30 10:11:54,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 5837 transitions, 121668 flow. Second operand has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:11:54,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:11:54,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 211 [2023-11-30 10:11:54,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:03,581 INFO L124 PetriNetUnfolderBase]: 10739/22491 cut-off events. [2023-11-30 10:12:03,581 INFO L125 PetriNetUnfolderBase]: For 317659/323636 co-relation queries the response was YES. [2023-11-30 10:12:03,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182269 conditions, 22491 events. 10739/22491 cut-off events. For 317659/323636 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 208074 event pairs, 615 based on Foata normal form. 341/20072 useless extension candidates. Maximal degree in co-relation 54356. Up to 7045 conditions per place. [2023-11-30 10:12:03,750 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 479 selfloop transitions, 165 changer transitions 1913/4692 dead transitions. [2023-11-30 10:12:03,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 4692 transitions, 102095 flow [2023-11-30 10:12:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 10:12:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 10:12:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 746 transitions. [2023-11-30 10:12:03,751 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8838862559241706 [2023-11-30 10:12:03,751 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 746 transitions. [2023-11-30 10:12:03,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 746 transitions. [2023-11-30 10:12:03,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:03,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 746 transitions. [2023-11-30 10:12:03,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:03,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:03,753 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:03,753 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 452 predicate places. [2023-11-30 10:12:03,754 INFO L500 AbstractCegarLoop]: Abstraction has has 634 places, 4692 transitions, 102095 flow [2023-11-30 10:12:03,754 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:03,754 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:03,754 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:03,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-30 10:12:03,957 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:03,958 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:12:03,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:03,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1339389745, now seen corresponding path program 2 times [2023-11-30 10:12:03,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:03,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999901905] [2023-11-30 10:12:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:03,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 10:12:04,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999901905] [2023-11-30 10:12:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999901905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:12:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950359376] [2023-11-30 10:12:04,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 10:12:04,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:04,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:04,092 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:12:04,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-30 10:12:04,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-30 10:12:04,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 10:12:04,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-30 10:12:04,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:12:04,389 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 10:12:04,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:12:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 10:12:04,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950359376] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:12:04,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:12:04,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-30 10:12:04,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826501073] [2023-11-30 10:12:04,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:12:04,622 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-30 10:12:04,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:04,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-30 10:12:04,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-30 10:12:04,624 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 211 [2023-11-30 10:12:04,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 4692 transitions, 102095 flow. Second operand has 19 states, 19 states have (on average 143.1578947368421) internal successors, (2720), 19 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:04,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:04,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 211 [2023-11-30 10:12:04,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:11,894 INFO L124 PetriNetUnfolderBase]: 9034/19261 cut-off events. [2023-11-30 10:12:11,894 INFO L125 PetriNetUnfolderBase]: For 301423/306834 co-relation queries the response was YES. [2023-11-30 10:12:11,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159539 conditions, 19261 events. 9034/19261 cut-off events. For 301423/306834 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 173611 event pairs, 398 based on Foata normal form. 79/16954 useless extension candidates. Maximal degree in co-relation 55066. Up to 6366 conditions per place. [2023-11-30 10:12:12,264 INFO L140 encePairwiseOnDemand]: 192/211 looper letters, 721 selfloop transitions, 94 changer transitions 2166/4220 dead transitions. [2023-11-30 10:12:12,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 4220 transitions, 93757 flow [2023-11-30 10:12:12,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-30 10:12:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-30 10:12:12,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2745 transitions. [2023-11-30 10:12:12,266 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6847094038413569 [2023-11-30 10:12:12,266 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2745 transitions. [2023-11-30 10:12:12,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2745 transitions. [2023-11-30 10:12:12,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:12,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2745 transitions. [2023-11-30 10:12:12,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 144.47368421052633) internal successors, (2745), 19 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:12,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 211.0) internal successors, (4220), 20 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:12,271 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 211.0) internal successors, (4220), 20 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:12,271 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 467 predicate places. [2023-11-30 10:12:12,271 INFO L500 AbstractCegarLoop]: Abstraction has has 649 places, 4220 transitions, 93757 flow [2023-11-30 10:12:12,271 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 143.1578947368421) internal successors, (2720), 19 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:12,271 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:12,271 INFO L232 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:12,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-30 10:12:12,479 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:12,479 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:12:12,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash -623154017, now seen corresponding path program 1 times [2023-11-30 10:12:12,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:12,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084907404] [2023-11-30 10:12:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:12,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:12,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:12,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084907404] [2023-11-30 10:12:12,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084907404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:12:12,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322663390] [2023-11-30 10:12:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:12,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:12,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:12,634 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:12:12,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-30 10:12:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:12,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-30 10:12:12,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:12:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:12,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:12:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:13,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322663390] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:12:13,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:12:13,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-11-30 10:12:13,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116243080] [2023-11-30 10:12:13,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:12:13,024 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-30 10:12:13,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-30 10:12:13,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2023-11-30 10:12:13,027 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 211 [2023-11-30 10:12:13,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 4220 transitions, 93757 flow. Second operand has 32 states, 32 states have (on average 160.40625) internal successors, (5133), 32 states have internal predecessors, (5133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:13,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:13,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 211 [2023-11-30 10:12:13,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:20,420 INFO L124 PetriNetUnfolderBase]: 9143/19733 cut-off events. [2023-11-30 10:12:20,420 INFO L125 PetriNetUnfolderBase]: For 335935/342400 co-relation queries the response was YES. [2023-11-30 10:12:20,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168514 conditions, 19733 events. 9143/19733 cut-off events. For 335935/342400 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 176699 event pairs, 417 based on Foata normal form. 3/17299 useless extension candidates. Maximal degree in co-relation 56280. Up to 6420 conditions per place. [2023-11-30 10:12:20,568 INFO L140 encePairwiseOnDemand]: 198/211 looper letters, 853 selfloop transitions, 258 changer transitions 2198/4585 dead transitions. [2023-11-30 10:12:20,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 4585 transitions, 106927 flow [2023-11-30 10:12:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-30 10:12:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-30 10:12:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7198 transitions. [2023-11-30 10:12:20,572 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7753123653597587 [2023-11-30 10:12:20,572 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7198 transitions. [2023-11-30 10:12:20,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7198 transitions. [2023-11-30 10:12:20,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:20,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7198 transitions. [2023-11-30 10:12:20,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 163.5909090909091) internal successors, (7198), 44 states have internal predecessors, (7198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:20,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 211.0) internal successors, (9495), 45 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:20,581 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 211.0) internal successors, (9495), 45 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:20,581 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 510 predicate places. [2023-11-30 10:12:20,581 INFO L500 AbstractCegarLoop]: Abstraction has has 692 places, 4585 transitions, 106927 flow [2023-11-30 10:12:20,581 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 160.40625) internal successors, (5133), 32 states have internal predecessors, (5133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:20,581 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:20,582 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:20,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-30 10:12:20,786 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:20,786 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:12:20,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:20,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1219185718, now seen corresponding path program 1 times [2023-11-30 10:12:20,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:20,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165017313] [2023-11-30 10:12:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:20,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-30 10:12:20,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:20,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165017313] [2023-11-30 10:12:20,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165017313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:20,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:12:20,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 10:12:20,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71183458] [2023-11-30 10:12:20,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:20,851 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:12:20,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:20,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:12:20,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 10:12:20,851 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 211 [2023-11-30 10:12:20,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 4585 transitions, 106927 flow. Second operand has 4 states, 4 states have (on average 183.5) internal successors, (734), 4 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:20,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:20,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 211 [2023-11-30 10:12:20,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:28,203 INFO L124 PetriNetUnfolderBase]: 9824/21185 cut-off events. [2023-11-30 10:12:28,204 INFO L125 PetriNetUnfolderBase]: For 427556/436436 co-relation queries the response was YES. [2023-11-30 10:12:28,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183358 conditions, 21185 events. 9824/21185 cut-off events. For 427556/436436 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 190724 event pairs, 409 based on Foata normal form. 148/18547 useless extension candidates. Maximal degree in co-relation 71674. Up to 8794 conditions per place. [2023-11-30 10:12:28,364 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 423 selfloop transitions, 143 changer transitions 2254/4369 dead transitions. [2023-11-30 10:12:28,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 4369 transitions, 108742 flow [2023-11-30 10:12:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 10:12:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 10:12:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 745 transitions. [2023-11-30 10:12:28,366 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8827014218009479 [2023-11-30 10:12:28,366 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 745 transitions. [2023-11-30 10:12:28,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 745 transitions. [2023-11-30 10:12:28,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:28,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 745 transitions. [2023-11-30 10:12:28,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,367 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,367 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 506 predicate places. [2023-11-30 10:12:28,367 INFO L500 AbstractCegarLoop]: Abstraction has has 688 places, 4369 transitions, 108742 flow [2023-11-30 10:12:28,368 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.5) internal successors, (734), 4 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,368 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:28,368 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:28,368 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-30 10:12:28,368 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:12:28,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:28,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2131705239, now seen corresponding path program 1 times [2023-11-30 10:12:28,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:28,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817638906] [2023-11-30 10:12:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:28,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:30,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817638906] [2023-11-30 10:12:30,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817638906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:12:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006131414] [2023-11-30 10:12:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:30,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:30,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:30,797 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:12:30,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-30 10:12:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:30,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-30 10:12:30,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:12:31,695 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-30 10:12:31,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-11-30 10:12:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 10:12:31,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:12:31,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 10:12:31,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-30 10:12:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 10:12:33,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006131414] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:12:33,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:12:33,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 17, 16] total 71 [2023-11-30 10:12:33,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403986034] [2023-11-30 10:12:33,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:12:33,046 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-11-30 10:12:33,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:33,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-11-30 10:12:33,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=4619, Unknown=0, NotChecked=0, Total=5112 [2023-11-30 10:12:33,050 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 211 [2023-11-30 10:12:33,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 4369 transitions, 108742 flow. Second operand has 72 states, 72 states have (on average 92.01388888888889) internal successors, (6625), 72 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:33,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:33,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 211 [2023-11-30 10:12:33,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:13:57,840 INFO L124 PetriNetUnfolderBase]: 45131/88194 cut-off events. [2023-11-30 10:13:57,841 INFO L125 PetriNetUnfolderBase]: For 1614352/1621761 co-relation queries the response was YES. [2023-11-30 10:13:58,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798284 conditions, 88194 events. 45131/88194 cut-off events. For 1614352/1621761 co-relation queries the response was YES. Maximal size of possible extension queue 1620. Compared 889349 event pairs, 873 based on Foata normal form. 522/75157 useless extension candidates. Maximal degree in co-relation 495230. Up to 51230 conditions per place. [2023-11-30 10:13:58,822 INFO L140 encePairwiseOnDemand]: 153/211 looper letters, 8430 selfloop transitions, 3306 changer transitions 4885/16716 dead transitions. [2023-11-30 10:13:58,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1171 places, 16716 transitions, 432788 flow [2023-11-30 10:13:58,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 484 states. [2023-11-30 10:13:58,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2023-11-30 10:13:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 46119 transitions. [2023-11-30 10:13:58,846 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4515980572637186 [2023-11-30 10:13:58,846 INFO L72 ComplementDD]: Start complementDD. Operand 484 states and 46119 transitions. [2023-11-30 10:13:58,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 484 states and 46119 transitions. [2023-11-30 10:13:58,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:13:58,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 484 states and 46119 transitions. [2023-11-30 10:13:58,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 485 states, 484 states have (on average 95.28719008264463) internal successors, (46119), 484 states have internal predecessors, (46119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:13:58,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 485 states, 485 states have (on average 211.0) internal successors, (102335), 485 states have internal predecessors, (102335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:13:58,953 INFO L81 ComplementDD]: Finished complementDD. Result has 485 states, 485 states have (on average 211.0) internal successors, (102335), 485 states have internal predecessors, (102335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:13:58,953 INFO L307 CegarLoopForPetriNet]: 182 programPoint places, 989 predicate places. [2023-11-30 10:13:58,953 INFO L500 AbstractCegarLoop]: Abstraction has has 1171 places, 16716 transitions, 432788 flow [2023-11-30 10:13:58,954 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 92.01388888888889) internal successors, (6625), 72 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:13:58,954 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:13:58,954 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:13:58,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-30 10:13:59,161 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:13:59,162 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-30 10:13:59,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:13:59,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1314705427, now seen corresponding path program 2 times [2023-11-30 10:13:59,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:13:59,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524805829] [2023-11-30 10:13:59,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:13:59,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:13:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:14:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:14:01,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:14:01,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524805829] [2023-11-30 10:14:01,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524805829] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:14:01,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140137909] [2023-11-30 10:14:01,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 10:14:01,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:14:01,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:14:01,534 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:14:01,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-30 10:14:01,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-30 10:14:01,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 10:14:01,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-30 10:14:01,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:14:02,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-30 10:14:02,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 10:14:02,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 10:14:03,351 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-30 10:14:03,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-11-30 10:14:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 10:14:03,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:14:07,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 10:14:07,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 52 [2023-11-30 10:14:07,401 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-30 10:14:07,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 143 [2023-11-30 10:14:07,407 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 10:14:07,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 62 [2023-11-30 10:14:07,417 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-30 10:14:07,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 99 [2023-11-30 10:14:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 10:14:08,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140137909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:14:08,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:14:08,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 26, 23] total 87 [2023-11-30 10:14:08,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925963261] [2023-11-30 10:14:08,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:14:08,334 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-11-30 10:14:08,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:14:08,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-11-30 10:14:08,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=7091, Unknown=26, NotChecked=0, Total=7656 [2023-11-30 10:14:08,338 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 211 [2023-11-30 10:14:08,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1171 places, 16716 transitions, 432788 flow. Second operand has 88 states, 88 states have (on average 84.42045454545455) internal successors, (7429), 88 states have internal predecessors, (7429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:14:08,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:14:08,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 211 [2023-11-30 10:14:08,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:16:34,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-11-30 10:22:54,832 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-30 10:22:54,832 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-30 10:22:55,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 516 states. [2023-11-30 10:22:55,523 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 30 remaining) [2023-11-30 10:22:55,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-30 10:22:55,728 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:22:55,728 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). [2023-11-30 10:22:55,729 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2023-11-30 10:22:55,730 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2023-11-30 10:22:55,731 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2023-11-30 10:22:55,731 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2023-11-30 10:22:55,731 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2023-11-30 10:22:55,731 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2023-11-30 10:22:55,731 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2023-11-30 10:22:55,731 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2023-11-30 10:22:55,731 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2023-11-30 10:22:55,731 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2023-11-30 10:22:55,731 INFO L457 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:22:55,734 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 10:22:55,734 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 10:22:55,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 10:22:55 BasicIcfg [2023-11-30 10:22:55,739 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 10:22:55,740 INFO L158 Benchmark]: Toolchain (without parser) took 808198.86ms. Allocated memory was 729.8MB in the beginning and 6.0GB in the end (delta: 5.3GB). Free memory was 683.0MB in the beginning and 1.0GB in the end (delta: -344.7MB). Peak memory consumption was 5.3GB. Max. memory is 16.0GB. [2023-11-30 10:22:55,740 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 402.7MB. Free memory is still 350.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 10:22:55,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.69ms. Allocated memory is still 729.8MB. Free memory was 683.0MB in the beginning and 670.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-30 10:22:55,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.93ms. Allocated memory is still 729.8MB. Free memory was 670.8MB in the beginning and 668.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 10:22:55,740 INFO L158 Benchmark]: Boogie Preprocessor took 27.33ms. Allocated memory is still 729.8MB. Free memory was 668.4MB in the beginning and 666.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 10:22:55,742 INFO L158 Benchmark]: RCFGBuilder took 516.94ms. Allocated memory is still 729.8MB. Free memory was 666.7MB in the beginning and 630.3MB in the end (delta: 36.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-11-30 10:22:55,742 INFO L158 Benchmark]: TraceAbstraction took 807451.96ms. Allocated memory was 729.8MB in the beginning and 6.0GB in the end (delta: 5.3GB). Free memory was 629.6MB in the beginning and 1.0GB in the end (delta: -398.1MB). Peak memory consumption was 5.2GB. Max. memory is 16.0GB. [2023-11-30 10:22:55,744 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 402.7MB. Free memory is still 350.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 168.69ms. Allocated memory is still 729.8MB. Free memory was 683.0MB in the beginning and 670.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.93ms. Allocated memory is still 729.8MB. Free memory was 670.8MB in the beginning and 668.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.33ms. Allocated memory is still 729.8MB. Free memory was 668.4MB in the beginning and 666.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 516.94ms. Allocated memory is still 729.8MB. Free memory was 666.7MB in the beginning and 630.3MB in the end (delta: 36.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 807451.96ms. Allocated memory was 729.8MB in the beginning and 6.0GB in the end (delta: 5.3GB). Free memory was 629.6MB in the beginning and 1.0GB in the end (delta: -398.1MB). Peak memory consumption was 5.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (88states, 81/211 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1250755 conditions, 126029 events (65493/126028 cut-off events. For 2184881/2192242 co-relation queries the response was YES. Maximal size of possible extension queue 4293. Compared 1410499 event pairs, 750 based on Foata normal form. 401/108602 useless extension candidates. Maximal degree in co-relation 912300. Up to 77724 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 237 locations, 30 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: 807.4s, OverallIterations: 24, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 764.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 397 mSolverCounterUnknown, 22216 SdHoareTripleChecker+Valid, 37.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22216 mSDsluCounter, 22957 SdHoareTripleChecker+Invalid, 34.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21850 mSDsCounter, 1575 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47654 IncrementalHoareTripleChecker+Invalid, 49626 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1575 mSolverCounterUnsat, 1107 mSDtfsCounter, 47654 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6021 GetRequests, 3923 SyntacticMatches, 8 SemanticMatches, 2090 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317864 ImplicationChecksByTransitivity, 124.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=432788occurred in iteration=23, InterpolantAutomatonStates: 1119, 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: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 36.3s InterpolantComputationTime, 5714 NumberOfCodeBlocks, 5594 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 7373 ConstructedInterpolants, 177 QuantifiedInterpolants, 71872 SizeOfPredicates, 218 NumberOfNonLiveVariables, 5411 ConjunctsInSsa, 292 ConjunctsInUnsatCore, 54 InterpolantComputations, 12 PerfectInterpolantSequences, 371/1379 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown